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TESTC300 Release 2021-09-03
Send your 1.b4 games to me, please. Thank you! /Marek
Marek Trokenheim's homepage
(c) Marek Trokenheim

1.b4 d5 2.Bb2 d4
Roczniak's defence

(...)

3.a3 Nc6 4.Nf3 Nf6 5.g3 h5 6.h4 (better is 6.b5!? Na5 7.Bd4+= (worse is 7.Nd4 h4=)) 6...Bg4 7.Bg2 d3?? (better is 7...Qd7=) 8.cd3+/– Qd6 9.Nc3 0–0–0 (9...Rb8+–) 10.Ne4?? (better is 10.Ng5 Be6 11.Nb5+–) 10...Ne4+/– 11.de4 Bf3 12.Bf3 Nd4 13.Bd4 Qd4 14.0–0 g5 (14...Qd2? 15.Qa4 Qh6 16.Rfd1 Rd1 17.Rd1+– (17.Qd1?! g5+/–)) 15.hg5 h4 16.Kg2 hg3 17.d3?? (better is 17.fg3 Rg8 18.e3+=) 17...gf2–+ 18.Rf2?? (18.Rc1 e6 19.e5 Be7–+) 18...Qe5 (better is 18...Rh2! 19.Kh2 Qf2 20.Kh1 Bg7–+) 19.Kf1 Qg5 20.Qc1 Qh4 (20...Qg3!? 21.Qc5 Bg7 22.e5 Be5 23.Qb5–+) 21.Qc4 Qh3 (21...Bh6 A) 22.Qf7 Be3 23.Bg2 Rdg8 (23...Qf2?! 24.Qf2 Bf2 25.Kf2–/+) 24.Qf5 Kb8–+; B) 22.e5 Qc4 23.dc4–+) 22.Ke1? (22.Bg2 Qh2 23.d4+= (worse is 23.Rf7 Bh6 24.Qe6 Kb8–/+; worse is 23.Qf7 Bg7 24.e5 Qe5–/+)) 22...f5?? (22...Qg3 23.e5 (23.Qf7?? Kb8–+) 23...Qe5 24.Rb1–+) 23.e5 (better is 23.ef5 Qg3 24.Rc1+/–) 23...Bh6–/+ 24.Qb5 c6 25.Qc5?? (25.Bc6 bc6 26.Qc6 Kb8 27.Qb5 Kc7 28.Qc5 Kd7–+) 25...Rhg8 (better is 25...Qg3 26.Ra2 Kb8–+) 26.Qa7?? (better is 26.Rf1–/+) 26...Rg1 27.Rf1 Qf1 0–1. sacaniev – widee, kurnik, 2013.

3.a3 d3 4.cd3 Nh6 5.e4 e6 6.Nf3 f6 7.Be2 e5 8.0–0 Bd7 9.Re1 g5 10.d4 g4 11.Nh4 f5? (better is 11...Bd6+–) 12.ef5 (better is 12.Nf5 Qg5 13.de5 Bf5 14.ef5 Qf5 15.d4+–) 12...Qh4= 13.de5 Nf5?? (13...Bf5!? 14.Nc3 c6=) 14.d4?? (14.e6!? Bg7 15.Bg7 Ng7 16.ed7 Kd8 17.Bg4 Rf8+–) 14...Bc6? (14...Bg7!?+=) 15.Bg4 Rg8 16.f3?? Bh6–/+ 17.Bf5? Bb5?? 18.a4 Bc4 19.d5?? Bf4 20.Bg4 Qh2 21.Kf2 Bg3 22.Ke3–/+ Be1 23.Qe1 Qg2 24.e6?? Qb2–+ 25.Nc3 Qb4 26.Rb1 Qc5 27.Kd2 Qd4 28.Kc1 Na6 29.Rb7 Nc5 30.Rc7 30...Qf4 31.Kc2 Bb3 32.Kb2 Nd3 33.Kb3 Ne1 34.Nb5 a5 35.Bh5 Rg6! 36.Bg6 hg6 37.d6 Qb4 38.Ka2 Qa4 39.Na3 Rb8 40.d7 Ke7 41.Rc8 Qb3 42.Ka1 Qa3 0–1. pieeater – karlsdad, ChessWorld.net, 2012.

3.a3 e5 (--> 1.b4 e5 2.a3 d5 3.Bb2 d4).

3.a3 Bg4 4.Nf3 Bf3 5.ef3 e6 6.Be2 Bd6 7.c3 dc3 8.Bc3 Qg5 9.0–0 Qh6 10.h3 Nf6 11.Bd4 Nd5 12.Bc4 0–0 13.Bd5 ed5 14.Be3 Qf6 15.Nc3 a5 16.ba5 Ra5 17.Ne2 b5 18.Ng3 d4 19.Ne4 Qe5 20.f4 Qe7 21.Bd4 Bf4 22.Re1 Qh4 23.g3 Qd8 24.gf4 Qd4 25.Qg4 Re8 26.Ng5 Re1 27.Re1 Qd2 28.Qc8 Qd8 29.Qd8 1–0. Nautiluschess – kantfr, ICS blitz, 2001.

3.Ba3 e5 4.b5 Ba3 5.Na3 Nf6 6.Nc4 Qd5 7.d3 (7.e3 0–0–/+) 7...0–0 (7...Qb5 8.Rb1 Qa6 9.Nf3–+) 8.e4 (8.Rb1 a6 9.b6 Nbd7 10.bc7 b5–/+) 8...de3 (8...Qb5 9.a4 Qc5 10.Nf3–+) 9.fe3–/+ Be6 (10.Nf3 Nbd7–/+; 9...Qb5 10.Nf3 Nc6 11.Qb1–/+) –/+. xadrez – nbh999, ChessWorld.net, 2003.

3.a4 e5 (--> 1.b4 d5 2.a4 e5 3.Bb2 d4).

3.b5 a6 4.ba6 Na6 5.Nf3 e5 6.Ne5 f6 7.d3?? (Better is 7.Nf3 Bc5 8.c3+/–) 7...fe5–+ 8.e4 Bb4 9.c3 dc3 10.Bc3 Bc3 11.Nc3 Qd4 12.Nd5 (12.Rc1 Nf6–+) 12...Nf6 13.Nf6 gf6 14.Qh5 Ke7 15.Be2 Qa1 16.Bd1 Qc3 17.Ke2 Nc5 18.Qf3 h5 19.Re1 Bg4 20.Qg4 hg4 21.Kf1 Rh2 22.Kg1 Rh4 23.g3 Rh3 24.Rf1 Qd3 25.Bg4 Rh6 26.Kg2 Qe4 27.Bf3 Qh4 28.Rg1 Qh2 29.Kf1 e4 30.Bg2 Rd8 31.Ke2 Qh5 32.f3 ef3 33.Bf3 Qe5 34.Kf2 Rh2 35.Rg2 Rd2 36.Kg1 Qe1 0–1. MasterofDisaster – vello01, Live Game Caissa's Web, 2004.

3.b5 Nc6?? 4.a4?? (better 4.bc6 bc6 5.Nf3+–) 4...Nb4= 5.Nf3 Nd5 (better 5...c5!?=) 6.Bd4+– Ndf6 7.Bb2 a6 8.e3 ab5 9.ab5 Ra1 10.Ba1 Bf5 11.c4 e6 12.Be2 b6 (12...Be7 13.0–0+–) 13.0–0+– Nh6 14.Nd4 Qa8 (14...Bd6 15.Nf5 Nf5 16.d3+–) 15.Nc3 Bd6 16.Bf3 Qa3 17.Bc6 Ke7 18.h3 (better 18.Nf5!? Nf5 19.Re1+–) 18...Bd3+– 19.Re1 Qc5 (19...e5 20.Nf3+–) 20.Bf3 (20.Na4!? Qe5 21.Nf3+–) 20...Qc4+– 21.Qc1 (21.Na4 Bg6+–) 21...Nf5 22.Nf5 (22.Nc6 Ke8+–) 22...ef5+= 23.Bb2 Qb4? (23...Ne4 24.Qa1=) 24.Be2 (better 24.e4!? fe4 25.Be4+–) 24...Be2+= 25.Re2 Ra8? (25...Re8 26.d3+=) 26.Qc2?? (better 26.e4 fe4 27.Re4 Qe4 28.Ne4 Ne4 29.Qe1+–) 26...Kf8+= 27.Re1 g6 28.Ne2 (28.d3!?+=) 28...Ne4= 29.Nf4 (29.Nc3 Nc3 30.Qc3 Qc3 31.Bc3 Ke8=) 29...Qb5 (29...Qd2 30.Qd2 Nd2 31.Nd5–/+) 30.Nd3 (better 30.d3!? Qc5 31.Qe2 Bf4 32.ef4=+) 30...Qa4–/+ Black launches an attack 31.Qa4 Ra4 32.Rd1 Ra2 33.Bc1 Ba3 34.Ba3 Ra3 35.Ne1 (35.Nb4 Rb3 36.Na6 c5–+) 35...Ra2–+ 36.Nf3 Ke7 37.Kf1 c5 38.Ke1 b5 39.Rb1 b4 40.d4 Kd6 41.dc5 Kc5 42.Nd4 (42.Rc1 Kd6 43.Rd1 Ke7–+) 42...Nf2 43.Nb3 Kc4 44.Nd2 Kb5 45.Kf2 Rd2 46.Kf3 h5 47.Rc1 b3 48.Rc7 b2 49.Rf7 (49.Rb7 Kc4 50.g3–+) 49...Kc6 50.Rf6 Rd6 51.Rf8 b1Q 52.Rc8 Kd7 53.Rc4 (53.Rg8 Qe4 54.Kf2 Rd2 55.Ke1 Qe3 56.Kf1 Qf2) 53...Qe4 (53...Qf1 54.Kg3 Qc4 55.Kf2 Rd2 56.Kg3 Qe4 57.h4 Rg2 58.Kh3 Qf3) 54.Re4–+ fe4 55.Ke4 Rf6 56.g4 (56.h4 Rf2 57.g3 Ke6–+) 56...hg4 57.hg4 Rf2 58.g5 (58.Ke5 g5–+) 58...Rf5 59.Kd4 Rg5 60.e4 Rf5 (better 60...Ke6 61.Ke3 Ke5–+) 61.Ke3?? (better 61.ef5 gf5 62.Kd5=) 61...Rf8–+ 62.Kd4 Re8 (better 62...g5 63.Kd3 g4–+) 63.Ke3 Ke6 64.Kf4 Rf8 65.Kg4 Ke5 66.Kg5 (66.Kg3–+) 66...Rf4 67.Kg6 Rf1 (67...Re4 68.Kg7 Ke6 69.Kg6 Re5 70.Kg7 Rg5 71.Kh6 Kf6 72.Kh7 Rh5 73.Kg8 Rh4 74.Kf8 Rh8) 68.Kg5 (68.Kg7 Ke4 69.Kg6 Ke5 70.Kg5 Rg1 71.Kh4 Kf5 72.Kh3 Kf4 73.Kh2 Rg3 74.Kh1 Kf3 75.Kh2 Kf2 76.Kh1 Rh3) 68...Rg1 69.Kh4 (69.Kh6 Ke4 70.Kh5 Kf4 71.Kh6 Kf5 72.Kh7 Kf6 73.Kh8 Kf7 74.Kh7 Rh1) 69...Re1 (69...Ke4 70.Kh3 Kf4 71.Kh2 Rg3 72.Kh1 Kf3 73.Kh2 Kf2 74.Kh1 Rh3) 70.Kh3 (70.Kg3 Ke4 71.Kg4 Rg1 72.Kh4 Rg6 73.Kh5 Kf5 74.Kh4 Rg8 75.Kh3 Kf4 76.Kh2 Kf3 77.Kh1 Kf2 78.Kh2 Rh8) 70...Re4 (70...Kf4 71.Kg2 Re2 72.Kh3 Re4 73.Kg2 Re2 74.Kf1 Kf3 75.Kg1 Re1 76.Kh2 Rd1 77.Kh3 Rh1) 71.Kg3 Rf4 72.Kg2 (72.Kh3 Kd4 73.Kg2 Ke3 74.Kg3 Re4 75.Kg2 Rg4 76.Kh3 Kf3 77.Kh2 Rh4 78.Kg1 Rh3 79.Kf1 Rh1) 72...Rf5 (72...Ke4 73.Kg3 Ke3 74.Kg2 Rg4 75.Kh3 Kf3 76.Kh2 Rh4 77.Kg1 Rh3 78.Kf1 Rh1) 73.Kg3 Rg5 (73...Rf6 74.Kg4 Rf4 75.Kg5 Rd4 76.Kg6 Re4 77.Kg5 Ke6 78.Kg6 Rg4 79.Kh5 Kf5 80.Kh6 Kf6 81.Kh7 Rh4 82.Kg8 Rh3 83.Kf8 Rh8) 74.Kf2 (74.Kf3 Rh5 75.Kg4 Rh6 76.Kg3 Ke4 77.Kf2 Rb6 78.Ke2 Rb2 79.Kd1 Kd3 80.Ke1 Ra2 81.Kf1 Ke3 82.Kg1 Kf3 83.Kh1 Kg3 84.Kg1 Ra1) 74...Kf4 75.Ke2 Rg3 (75...Rd5 76.Kf2 Re5 77.Kg2 Re2 78.Kf1 Kf3 79.Kg1 Re1 80.Kh2 Rd1 81.Kh3 Rh1) 76.Kf2 (76.Kd2 Ke4 77.Ke2 Rg2 78.Ke1 Ke3 79.Kd1 Rh2 80.Kc1 Kd3 81.Kb1 Kc3 82.Ka1 Kb3 83.Kb1 Rh1) 76...Rf3 (76...Re3 77.Kg2 Re2 78.Kf1 Kf3 79.Kg1 Re1 80.Kh2 Rd1 81.Kh3 Rh1) 77.Kg2 (77.Ke2 Re3 78.Kd1 Rd3 79.Kc1 Ke3 80.Kb1 Kd2 81.Kb2 Re3 82.Kb1 Kc3 83.Ka2 Re1 84.Ka3 Ra1) 77...Re3 (77...Ke3 78.Kg1 Rg3 79.Kh1 Kf3 80.Kh2 Kf2 81.Kh1 Rh3) 78.Kh2 (78.Kf2 Re6 79.Kg2 Re2 80.Kf1 Kf3 81.Kg1 Re1 82.Kh2 Rd1 83.Kh3 Rh1) 78...Ke4 (78...Re2 79.Kg1 Kg3 80.Kf1 Re3 81.Kg1 Re1) 79.Kg1 (79.Kg2 Rf3 80.Kh2 Ke3 81.Kg2 Kf4 82.Kh2 Rf2 83.Kh1 Kg4 84.Kg1 Kg3 85.Kh1 Rf1) 79...Kd3 (79...Kf3 80.Kf1 Kg3 81.Kg1 Re1) 80.Kf2 Re2 (80...Kd2 81.Kf1 Re2 82.Kg1 Ke1 83.Kh1 Kf2 84.Kh2 Re3 85.Kh1 Rh3) 81.Kf1 (81.Kg3 Ke4 82.Kg4 Rg2 83.Kh3 Rg5 84.Kh4 Kf4 85.Kh3 Kf3 86.Kh2 Rh5 87.Kg1 Rh4 88.Kf1 Rh1) 81…Kd2 (81...Kd2 82.Kg1 Ke1 83.Kh1 Kf2 84.Kh2 Re3 85.Kh1 Rh3) 0–1. BeepBeepImAJeep (2740) – DrSv (2395), lichess.org, 2020.

3.b5 d3 4.ed3+– Bd7 5.a4 a6 6.c4 (6.Nc3 Nf6+–) 6...ab5 7.ab5 Ra1 8.Ba1 c6 9.bc6 Nc6 10.Nf3 Qb6 11.d4 Nd4?? (better 11...Bf5 12.Na3 Nf6+–) 12.Bd4+– Qb4 13.Be2 e5 (13...Ba4 14.Qc1+–) 14.Be5 Bc5 (14...Ba4 15.Qc1 Bc6+–) 15.Bg7 Qc4 (15...Be6+–) 16.Bc4 Bf2 17.Kf2 (17.Kf2 Nh6 18.Bh8 Ng4 19.Ke1+–) 1–0. BeepBeepImAJeep (2615) – basilmiron, lichess.org, 2018.

3.b5 Qd5 4.a4 Bf5 5.Nf3 e5 6.e4 Be4–/+ 7.c4 dc3?? (better is 7...Bf3 8.Qf3 Qf3 9.gf3 Nd7–/+) 8.Nc3+– Bf3 9.gf3?? (better is 9.Nd5 Bd1 10.Nc7 (10.Rd1?! Bd6+=; 10.Kd1?! Bd6+=) 10...Kd8 11.Na8+–) 9...Qe6+= 10.Bg2 Bb4 (10...Nd7 11.0–0 Nc5 12.f4=) 11.0–0 Ne7 12.Ne4 0–0 13.Qc2 c6 14.Ng5 Qg6 15.Ne4 (15.Qg6 Ng6 (worse is 15...fg6 16.Ne6+=) 16.d4 ed4 17.Bd4 Nf4–/+) 15...cb5 (better is 15...Nd7!?–/+) 16.ab5+= Nd7 17.Kh1 Rac8 (17...Qe6 18.f4 h6 19.Ra4=) 18.Qa4 (18.Qb3 Bc5 19.Bh3+–) 18...Bc5 19.Nc5 Nc5 (19...Rc5 20.Ba3 Nc8 21.Bh3+/–) 20.Qa7 Nb3 21.Bc3 (better is 21.Rad1!?=) 21...Na1–/+ 22.Ra1 h6 23.Qb7 Nf5 24.Be5 Qe6 25.f4 Qc4?? (better is 25...Rcd8=) 26.Bd5+– Qc5 27.Rg1 g6 (27...Rce8 28.d4 Qb4+–) 28.Rg6 Kh7 29.Bf7 Rb8 30.Qe4 (30.Rg7! Ng7 31.Qe4 Kh8 32.Bg7 Kg7 33.Qg6 Kh8 34.Qh6) 30...Rf7= 31.Bb8?? (better is 31.Rg7! Rg7 32.Qf5 Kg8 33.Qe6 Kh7 34.Qf5 Kg8 35.Qe6 Kh7 36.Qf5=) 31...Kg6–+ 32.Qg2?? (32.Qe6 Rf6 33.Qe8 Kh7 34.Qd7 Ng7 35.Kg2–+) 32...Kh7 33.Be5 Qf8 (better is 33...Qb5 34.h3 Qd3–+) 34.Qe4 Kg8 (34...Qe8 35.Qc4–/+) 35.b6 Qe7 36.Qg2 (36.Qa8!? Kh7 37.Kg1+=) 36...Kh7–/+ 37.Bc7?? (better is 37.h4 Nh4 38.Qe4 Nf5 39.d3–/+) 37...Rg7–+ 38.Qf1 Qd7 0–1. jura1946 – krzysiekoz, kurnik, 2014.

3.b5 Bd7 4.Nf3 Bb5 5.Nd4 a6 6.Nb5 ab5 7.e3 Nf6 8.Bb5 c6 9.Bc4 Nbd7 10.d4 g6 11.0–0 Bg7 12.c3 0–0 13.Nd2 Nb6 14.Bb3 Nfd5 15.Nc4 Nc4 16.Bc4 Nb6 17.Bb3 e6 18.a4 Nd5 19.c4 Nb4 20.Qd2 c5 21.Bc3 Nc6 22.d5 Bc3 23.Qc3 ed5 24.cd5 Ne7 (24...Na5!? 25.Rfb1 Qd6+–) 25.e4 Qd6 26.Rad1 f5?? (26...Rfd8+–) 27.e5 Qa6 28.d6 Kh8 29.de7 (29.e6 Kg8 30.de7 Qf1 31.Kf1 Rfe8 32.Qf6 Re7 33.Qe7 h5 34.Rd7 Ra4 35.Qg7) 29...Rfe8 30.e6 Kg8 31.Qf6 c4 32.Bc2 (32.Rd8 Rad8 33.ed8Q Rd8 34.Qd8 Kg7 35.Qe7 Kh6 36.Qf8 Kh5 37.Bd1 Kg5 38.f4 Kh4 39.Qh6) 32...Qc6 33.Rd8 b6 (33...Rad8 34.ed8Q Rd8 35.Qd8 Kg7 36.Qe7 Kh6 37.Qf8 Kg5 38.f4 Kh5 39.Bd1 Qf3 40.Bf3 Kh4 41.Qh6) 34.Qf7 (34.Qf8 Rf8 35.ef8Q) 34...Kh8 35.Ra8 (35.Qf8 Rf8 36.ef8Q) 35...Qa8 36.Rd1 Qc6 (36...h6 37.Rd8 Rd8 38.Qf6 Kg8 39.Qg6 Kh8 40.Qf6 Kg8 41.ed8Q Qd8 42.Qd8 Kg7 43.e7 c3 44.e8Q h5 45.Bf5 c2 46.Qg5) 37.h3 (37.Qf8 Rf8 38.ef8Q) 37...c3 (37...Qa8 38.Qf6 Kg8 39.Rd8 Qd8 40.Qf7 Kh8 41.ed8Q Rd8 42.e7 Ra8 43.Qf8 Rf8 44.ef8Q) 38.Rd8 1–0. slihuatamanio – vbxyz, kurnik, 2013.

3.b5 e5 (--> 1.b4 e5 2.b5 d5 3.Bb2 d4).

3.c3 d3 4.ed3 e5 5.Nf3 f6 6.Nh4N Be6 7.Qf3 c6 8.Nf5 a6 9.Ne3 Bd5 10.Nd5 cd5 11.c4 (better is 11.Be2+/–) 11...e4?? (better is 11...Bb4 12.cd5 Bc5=) 12.de4+– dc4 13.Bc4 Bb4 (13...Nc6 14.a3+–) 14.Bc3 (14.Bg8 Rg8 15.Qb3 Rh8 16.Qb4 b5+–) 14...Bc5?? (14...Bc3 15.Nc3 (worse is 15.Qc3 Ne7+/–) 15...Nc6 16.Bg8+–) 15.0–0 (15.Qh5 g6 16.Qc5 Nc6+–) 15...Ne7?? (15...Qc7 16.Qh5 g6+–) 16.Qh5 Ng6 17.Re1 (better is 17.Qc5 Nc6 18.Rc1+–) 17...Qb6 18.Re2 Nc6 19.Qd5 Nf4 (19...Nce5!? 20.d4 Rd8+=) 20.Qf7+– Kd8 21.Bf6! Be7? 22.Be7 Ne7 23.Qf4 Rc8?? 24.Qe5 Rc4 25.Re1 Re8 26.Nc3 Rf8 27.Nd5 Qf2 28.Kh1 Rf7 29.Qd6 Ke8 30.Nc7 Rc7 31.Qc7 Nc6 32.Qc8 Nd8 33.d3 Rf6 34.e5 Rg6 35.Rg1 Qh4 36.Qh3 Qg5 37.d4 Ne6 38.d5 Nf4 39.Qc8 Qd8 40.Qd8 Kd8 41.Rad1 b5 42.e6 Ke7 43.g3 Ne2 44.Rge1 Nc3 45.d6 Kf6 46.Rd2 Kf5 47.e7 Ne4 48.e8Q Ng3 49.hg3 Rh6 50.Kg2 Kg4 51.Re4 Kg5 52.Rd5 Kf6 53.Qe6 1–0. snake2 – karlsdad, ChessWorld.net, 2012.

3.d3 a5 4.a3 ab4 5.ab4 Ra1 6.Ba1 Bf5 7.e4 Bc8 8.Nf3 Nc6 (better is 8...Bg4!?=) 9.b5+/– Nb4 (better is 9...Na7!? 10.Nd4 e5+/–) 10.Bd4+– h5 (10...Bg4 11.c3 e5 A) 12.cb4 Bf3 13.Qa4 Qd4 (13...ed4?! 14.gf3 Ne7 15.Na3=) 14.Qa8 Qd8 15.Qd8 Kd8 16.gf3 Bb4 17.Ke2 Nf6+=; B) 12.Be5+–) 11.Be2 (11.c3 e5 12.Be3 Bg4+–) 11...h4 (11...Bg4 12.Be3 Bf3 13.Bf3+–) 12.Nc3 (better is 12.Qd2!? Na2+–) 12...h3 13.g3 e6 14.0–0 f5 15.ef5 ef5 16.Re1 Bd6 (16...Nf6+–) 17.Bg7 Rh5 (17...Rh7 18.Bd4+–) 18.Bd4 (better is 18.Ne5 Be5 19.Bh5 Kd7 20.Re5 Qg5 21.Rf5 Qg7 22.Rf7 Qf7 23.Bf7 Nh6+–) 18...b6 (18...Ne7+–) 19.Ne5 Be5 (19...Rh6 20.Bh5 Kf8+–) 20.Bh5 Ke7 21.Re5 Kf6 (21...Be6 22.Qf3 Qf8+–) 22.Rd5 (22.Rf5! Ke7 23.Qe2 Kd6 24.Rd5 Nd5 25.Qe5 Kd7 26.Bg4) 22...Ke7+– 23.Rd8 (23.Qe2 Be6 24.Rd8 Nf6 25.Bf6 Kf6 26.Re8 f4 27.Qe6 Kg5 28.Qg6) 23...Kd8 24.Be3 (better is 24.Bf7 c5 25.bc6 Ke7+–) 24...Nf6 25.Bf3 Kd7 26.Bd4 Ke6 27.Bf6 Kf6 28.Nd5 Nd5 29.Bd5 Ke5 30.Qf3 Be6 31.Be6 Ke6 32.d4 Kf6 33.Qc6 Kg5 34.Qc7 Kg4 35.Qf4 1–0. Valpa – Magulu, playchess.de, 2005.

3.d3 Qd6 4.c3= Nc6 5.b5 Na5 6.Qa4+/– b6 7.cd4 e5 8.de5+– Qd5 9.Nf3 Bd7 10.Nc3 Qc5 11.Qe4 (11.Qe4 Rc8 12.d4+–) 1–0. marre – prorubono, internet, 2010.

3.d3 e6 4.a3 Nf6 5.Nf3 Nc6 6.c3 dc3 7.Nc3 Be7 8.e4 0–0 9.b5 Nd4 10.Nd4 Qd4 11.Be2 Qd8 12.0–0 c6 13.bc6+= bc6 14.d4 a5 15.e5 Nd5 16.Ne4 f5 17.Nd2 Ba6 18.Ba6 Ra6 19.Nf3 Ra8 20.a4 Rb8 21.Ba3 Ba3 22.Ra3 h6 23.h3 Rb4 24.Qc1 Qd7 25.Re1 Rfb8 26.Re2?? Rb1–+ 27.Qb1 Rb1 28.Re1 Re1 29.Ne1 Nb4 30.Nf3 Nc2 31.Rb3 Nd4 32.Nd4 Qd4 33.Rb8 Kh7 34.Re8 Qa1 35.Kh2 Qe5 36.Kg1 c5 37.Rc8 Qd5 38.Kh2 c4 39.g3 Qd3 40.h4 c3 41.Rd8 Qd8 (42.Kg2 Qd5 43.f3 c2 44.g4 fg4 45.Kh2 Qf3 46.Kg1 c1Q 47.Kh2 Qch1) 0–1. badboy1221 – abc1, Live Game Caissa's Web, 2005.

3.d3 Nf6 4.Nf3 Bg4 5.Nbd2+= Nc6 6.b5+/– Na5 7.Bd4 e6 8.Rb1 Bd6 9.Bc3+– b6 10.e4 e5 11.h3 Bh5 12.g4 Ng4? 13.hg4 Bg4 14.Be2 c5 15.Ne5 Be2 16.Qe2 Be5 17.Be5 Qg5 18.Nf3 Qg6 19.Rg1 Qh5 20.Rg7 Rf8 21.Bf6 Kd7 22.Ne5 Ke6 23.Qh5 (23.Qh5 Kf6 24.Qg5 Ke6 25.Nf7 Rf7 26.Qd5 Kf6 27.Rf7 Kg6 28.Qf5 Kh6 29.Rh7) 1–0. marre – qobp, internet, 2010.

3.d3 g6 4.Nf3 Bg7 5.Nbd2 c6 6.e3+/– Qb6 7.a3 a5 8.Nc4 Qd8 9.Bd4 b5?? 10.Bg7 bc4 11.Bh8 f6 12.dc4 a4 13.Qd8 Kd8 14.0–0–0 Ke8 15.Kb2 Kf7 16.Rd8 Be6 17.b5 cb5 18.cb5 1–0. pierre – oppojj, internet live, 2010.

3.e3 Nf6 4.Bd4 e5 5.Bb2 (5.Be5 Bb4 6.Qf3 Nbd7+=) 5...Bd6= 6.Nf3 (better 6.a3=) 6...Nc6?? (6...e4!? 7.Ne5 Qe7=) 7.a3 (7.b5 Nb4 8.a3 e4 9.ab4 ef3 10.Qf3 Bb4 11.Bf6 Qf6 12.Qf6 gf6+–) 7...Bg4 (7...e4 8.Nd4+=) 8.Be2 (8.h3 Bf3 9.Qf3 0–0+–) 8...Bf3 9.Bf3 Ke7? (better 9...e4!? 10.Be2 Qe7+–) 10.Nc3 g5 11.Be2 g4 (11...Ke8+–) 12.Bg4 Rg8 13.Bf5 (13.Bf3 Qd7+–) 13...Rg5 (better 13...Rg2 14.Ne4 Ne4 15.Be4 Qg8+–) 14.Qf3 Rf5 (14...Ke8 15.Ne4 Ne4 16.Be4+–) 15.Qf5 Qd7 16.Qf3 Nd4 (16...Rg8+–) 17.ed4 ed4 18.Nd5 (18.Ne2 c5+–) 18...Nd5 19.Qd5 Qe6 20.Kd1 (better 20.Qe6 Ke6 21.Bd4+–) 20...Qd5–+ 21.Re1 Be5 (better 21...Kd7 22.f3 Rg8–+) 22.f4 Kd6 (better 22...f6 23.fe5 fe5–+) 23.c4? (better 23.fe5 Kd7 24.a4 Qg2 25.Ra3–/+) 23...Qc4–+ 24.Re5 f6 25.Rf5 (25.Re4 Qb3 26.Kc1–+) 25...Qd5 (better 25...Qb3 26.Kc1 Re8–+) 26.Rf6 (better 26.Rd5 Kd5 27.Rc1+–) 26...Qe6?? (better 26...Kd7 27.Ke2 Rg8–+ (worse 27...Qg2 28.Kd3 Qf3 29.Kd4–+)) 27.Re6+– Kd5 0–1. FeegLood (2565) – KothGamesOnly (2115), lichess.org, 2015.

3.Nf3 Na6 4.a3 c5 5.bc5 Nc5 6.Bd4 (worse is 6.Nd4 Na4 7.Qc1 e5+=) 6...Qc7 7.Nc3 e6 8.e3 Ne7 9.Nb5 Qb6 10.Be5 Na6?? (better is 10...Nd5 11.Rb1 Qd8+–) 11.Nd6 Kd7 12.Rb1 Qc5 (12...Qa5 13.Bc3 Qd5 14.Ne5 Kd6 15.Nf7 Kd7 16.Nh8 Nc6+–) 13.Nb7 Bb7 14.Rb7 Kc6 (14...Kd8 15.Ng5 Qd5 16.Nf7 Ke8 17.Nd6 Kd8+–) 15.Ba6 Ng6 16.c4 Bd6 (16...Qc4 17.Bc4 Kb7 18.Qb1 Kc8 19.Ba6 Kd8 20.Qd3 Ke7 21.Qd6 Ke8 22.Bb5) 17.Qa4 1–0. Speedy – Macho, internet, 2017.

3.Nf3 b6 4.Nd4 Bb7 5.e3 Qd5 (5...e5 6.Nf3 e4 7.Ne5+–) 6.Nc3 Qg5 (6...Qd6 7.Ncb5 Qd7 8.Qh5+–) 7.Nf3+– Qg6 8.Ne5 Qg5 9.f4 Qh4 10.g3 Qf6 11.Bb5 c6? (better 11...Kd8 12.0–0 e6+–) 12.Ne4 Qf5 (12...cb5 13.Nf6 ef6 14.Nf3 Bb4 15.0–0+–) 13.Bd3 Qh3 (13...Nh6 14.Nd6!! ed6 15.Bf5 Nf5+–) 14.Ng5 Qg2 15.Be4 c5 (15...Qh1 16.Bh1 Nh6+–) 16.Bg2 Bg2 17.Nef7 (better 17.Rg1!? Nh6 18.Rg2 Nd7 19.Ngf7 Nf7 20.Nf7 Kf7 21.Qh5 Ke6+–) 17...Bh1 18.Qg4 (better 18.Nh8 Nf6 19.Bf6 ef6 20.Qh5 Kd7 21.Qh3 Kc6 22.Qc8 Kb5+–) 18...h6 (18...Nd7 19.Nh8 Ngf6 20.Bf6 Nf6+–) 19.Qc8 1–0. onur604 (2035) – ghjyz (1695), lichess.org, 2020.

3.Nf3 c6 4.Bd4 e6 5.e3 f6 6.a3 a6 (6...e5 7.Bc3+–) 7.Bb2 e5 8.Bc4 (8.d4 a5+–) 8...Ne7 (8...b5 9.Ba2+–) 9.0–0 b5 10.Bb3 Bg4? (10...a5 11.d4 e4 12.Nfd2+–) 11.d3?? (better 11.Ne5!? fe5 12.Qg4 Qd6+–) 11...Nf5 (11...Nc8 12.Nbd2+–) 12.Nbd2 (12.h3 Bf3 13.Qf3 g6+–) 12...Bf3 (12...Nh4!?+–) 13.Nf3 (13.gf3 a5 14.f4 ab4 15.fe5 ba3 16.ef6 Qd7+–) 13...c5 (13...a5 14.e4 Nh6 15.Bc3+–) 14.c4 (better 14.Ne5!? fe5 15.Qf3 Nd7 16.Qf5 Qf6+–) 14...cb4 15.cb5 (15.ab4 Bb4 16.Ne5 fe5+–) 15...ab5? (15...ba3 16.Ba3 ab5 17.Bf8 Ra1 18.Qa1 Rf8 19.Qb1+–) 16.ab4 (better 16.Ne5 fe5 17.Qf3 ba3 18.Qf5+–) 16...Bb4?? (better 16...Ra1 17.Qa1 Bb4+–) 17.Ra8+– e4 (17...Qc7 18.Ne5! fe5 19.Qg4+–) 18.Nd4 (better 18.de4 Nd6 19.Qd5+–) 18...Qd7 (18...Nd4 19.Bd4 h5+–) 19.Nf5 (better 19.Rb8!? Ke7 20.Rh8 Nd4 21.Bd4 Ba3+–) 19...Qf5 20.de4 Qe4 21.Rb8 Ke7 22.Rh8 h6 23.Qd8 1–0. GuestRCTG – GuestVSYQ, freechess.org, 2017.

3.Nf3 g6 4.Bd4 f6 5.e3 Bg7 6.Bc4 Nh6 7.Bb3 (7.d3 Nf7+/–) 7...Bg4 8.0–0 e5 9.h3 (9.Bb2!?+/–) 9...Bf3= 10.Qf3 =. annmarie – Woodstock, Live Game Caissa's Web, 2004.

3.f4 b6 4.Nf3 c5 5.bc5 bc5 6.c3 Qb6 7.Qc2 Bg4 (7...d3!? 8.ed3 Nd7+=) 8.cd4 cd4 9.Nd4 e6? (9...Bd7 10.e3+/–) 10.e4 (Better is 10.h3!? e5 11.hg4 ed4 12.Qe4 Ne7 13.Bd4+– (13.Qa8 Qb2 14.g3 Nec6=)) 10...Bc5 11.Bb5 Nd7 12.Qa4 (Better is 12.Bd7 Kd7 13.Na3+–) 12...Bd4?? (Better is 12...Kf8+/–) 13.Bd7 (< 13.Bd4 Qc7 14.Bg7 Ne7 15.Bh8 Qc1 16.Kf2 Qh1 17.Bd7 Kf8+–) 13...Kd8 (13...Kf8 14.Bd4 Qc7 15.0–0+–) 14.Bd4 (14...Qc7 15.Bg7 Qd7 16.Qa5 Ke8 17.Nc3+–) 1–0. Wall,Bill – Mindless, Microsoft Gaming Zone, 2004.

3.f4 Nc6 4.b5 Na5 5.Nf3 g6 (Better is 5...c5!?=) 6.Bd4+/– f6 7.e4 Bg7 8.Be2 Bg4 9.Bb2 Bf3 10.Bf3 e5 11.0–0 ef4 12.Be2 g5 (12...Qd6+–) 13.Bh5 Kf8 14.Qg4 Nc4 15.Qe6 Nd6 16.d3 c6?? (Better is 16...Qe7 17.Qd5 Rd8+–) 17.bc6 (Better is 17.Ba3 Qb6 18.Rf2+–) 17...bc6 (17...Qe7 18.cb7 A) 18...Qe6?? 19.ba8Q (< 19.ba8N f5 20.e5 Be5=+) 19...Nc8 20.d4+–; B) 18...Rd8 19.Qd6 Qd6+–) 18.Ba3 Qb6 19.Kh1 c5 20.d4! Qa6 (20...cd4 21.Qf7) 21.Rd1 (21...Re8 22.Be8+–) 1–0. Wall,Bill – Levi, Microsoft Gaming Zone, 2004.

3.f4 e5=+ 4.fe5 Nc6 5.Nf3 Bb4 6.g3 Bg4 7.Bg2 Bf3 8.ef3= Ne5 9.Qe2+= f6? 10.f4+– d3 11.cd3 Qd3 12.fe5 Qe2 13.Ke2 Rd8 14.Bb7 (14...Rb8 15.Bc6 Kd8 16.ef6 Nf6 17.Bf6 gf6 18.Rf1+–) 1–0. Wall,Bill – Crowned, Internet, 2003.

3.f4 e6 4.c3 Nc6 (4...dc3 5.Bc3 Nf6 6.e3=+) 5.Nf3 (5.b5!? dc3 6.Nc3=) 5...dc3=+ 6.Bc3 Nf6 (6...Nb4? 7.Bb4 Bb4 8.Qa4 c6 9.Qb4+–) 7.a3 Be7 8.h3? (Better is 8.Qc2!?=) 8...Ne4–/+ 9.Bg7?? Ng3 10.Bh8+/– Nh1 11.Qc2 Bh4 12.Nh4?? Qh4–+ 13.Kd1 Qf2 14.Kc1 Qf1 15.Kb2 Qf4 16.Qh7 Ke7 17.Nc3 Qd2 18.Kb3 a5?? 19.Ka4 ab4–+ 0–1. The Viper – BibiAlih, ChessWorld.net, 2002.

3.g3 Qd5 4.f3 e5 5.Bg2 (better 5.c3=+) 5...d3?? (better 5...Bb4 6.c3 Bc5–/+) 6.ed3+= Bb4 7.c3 (better 7.Qe2!? Nc6 8.f4+=) 7...Bd6=+ 8.Ne2 (8.Qe2 Nc6 9.Ba3 Nge7=+) 8...Qb5 (8...Qd3!? 9.f4 Nf6 10.fe5 Be5–/+) 9.Qc2=+ Bf5 10.Nc1 Qb6 11.a4 Nf6 12.Bf1 (12.Na3 Qc6–/+) 12...Nd5 (12...0–0 13.Bg2–+) 13.c4 (13.Bg2!?–/+) 13...Nb4–+ 14.Qc3 0–0 15.h3 (15.g4 Bg6 16.h4 Bc5–+) 15...Bg6 (15...N8c6 16.Na3–+) 16.g4 (16.Na3 Re8–+) 16...f6 (16...N8c6 17.Na3 Nd4 18.Bg2–+) 17.Be2 (17.h4 N8c6 18.h5 Bf7–+) 17...Nd7 (17...N8c6 18.Na3 Nd4 19.Rf1–+) 18.Ba3 (18.a5 Qa6–+) 18...Nc6 (18...a5!? 19.Qb2–+) 19.Nb3 Ba3 20.Na3 Rad8 (20...Nc5 21.Nc5 Qc5 22.Rb1–+) 21.c5 (better 21.Nb5 a6 22.a5 Na5 23.Ra5 ab5 24.Rb5–/+) 21...Nc5?? (better 21...Qb4–/+) 22.Nc5+– Nd4 23.Bf1?? (better 23.Rb1 Qd6 24.Rb7+–) 23...Nf3 24.Ke2 (better 24.Kf2 Nd2 25.a5=) 24...Nd4–+ 25.Ke1 (better 25.Kd1 Qc6 26.Ne4 Be4 27.de4 Qc3 28.dc3 Nb3 29.Ke2 Na1 30.Ke3=+) 25...c6?? (better 25...Qc6 26.Rg1 b6–+) 26.Rb1+– Qc7 27.Nc4?? (27.Rb7!? Qd6 28.Bg2 a6+–) 27...Nf3 (better 27...b6 28.Ne4 Bf7=+) 28.Kd1 e4? (better 28...Qe7!? 29.Nb7 Rd7+–) 29.Ne6+– (29.Rb7?! Qg3+–) 29...Qg3 30.Nd8 Qe1?? (better 30...Rd8 31.Rb7 Qe1 32.Kc2 ed3 33.Kb2 Qf2+–) 31.Kc2 (31.Kc2 Qf2 32.Nb7 Ne1 33.Kb3 ed3 34.Be2 de2 35.Rbe1+– (35.Rhe1?! Bb1 36.d4 Re8+=)) 1–0. alessandrocarvalhaes – killmenoob, lichess.org, 2017.

3.g3 Bd7 4.Bg2 (4.Bd4? Bc6 5.Nf3 Bf3 6.ef3 Qd4–+) 4...Bc6 5.Nf3 Bf3 (5...e5 6.a3=) 6.Bf3+= c6 7.b5 (7.e3 d3+=) 7...e5 (7...cb5? 8.Bb7 Nd7 9.Ba8 Qa8 10.0–0+–) 8.bc6 (8.e3 Bc5= (worse 8...cb5 9.Bb7 Nd7 10.Ba8 Qa8 11.0–0+–)) 8...Nc6= 9.c3 Nf6 10.0–0 (10.cd4 Nd4 11.0–0 Nf3 12.ef3 Bd6=) 10...Bc5 11.cd4 Bd4 12.Nc3 a6 (12...0–0 13.Rb1=) 13.Qc2 0–0 14.Rab1 Nb4 (14...Rc8!?=) 15.Qa4 Qe7 16.a3 b5?? (better 16...Bc3 17.dc3 Nc6=) 17.Qb4+– Bc5 18.Qb3 Rad8 (18...e4 19.Bg2 Rad8 20.Rbc1+–) 19.d3 Bd4 20.Ne4 Bb2 21.Rb2 Ne4 22.Be4 Qd6 (22...Rc8 23.e3+–) 23.a4 ba4 (23...Rb8 24.Rc2+–) 24.Qa4 f5 (24...Qe6 25.Rc1+–) 25.Bg2 (25.Bb7 Rf6+–) 25...Kh8 (25...Rf6 26.Qc4 Kh8 27.Bb7+–) 26.Qa5 (26.Rfb1 Rf6+–) 26...f4 (26...Rb8 27.Bb7+–) 27.Rb6 Qd4 28.Ra6 fg3 29.hg3 Rd6 30.Rd6 Qd6 31.Qd2 (31.Rb1 Rc8+–) 31...Rf6 (31...Qd4 32.e3 Qd6 33.Be4+–) 32.Qc2 Rg6 (32...Rf8+–) 33.Qc8 (33.Qc8 Qd8 34.Qd8) 1–0. JUANKARODA (1760) – afshinrashin (1790), lichess.org, 2020.

3.g3 Nf6 4.Bg2 Nc6 5.a3 e5 6.Nf3 (6.c3 Be6=) 6...e4=+ 7.Ng5 e3 (Better is 7...Qd5!? 8.h4 Qe5=+) 8.de3= de3?? (Better is 8...Ng4 9.h4 h6+=) 9.Bc6+– bc6 (9...Nd7 10.Qd5 Qe7 11.Bb7 Bb7 12.Qb7 Rb8+–) 10.Qd8 Kd8 11.Nf7 (11…Ke7 12.Nh8 ef2 13.Kf2+–) 1–0. Wall,Bill – Hah, Internet, 2002.

3.h3 e5 4.Nf3 Qd5 5.c4 (better 5.e3!? Bb4 6.ed4=) 5...Qc4–/+ 6.Ne5 Qb4 7.Ba3 Qb5 8.Bf8 (8.Nf3 Qb6–/+) 8...Kf8 9.Nd3 Nf6 10.Na3 Qe8 11.Qc2 Nc6 12.Qc5 Kg8 13.f3 (13.Nb5 b6 14.Qg5 Qe7–/+) 13...Be6 14.g4 h6 15.Qb5 b6 16.Bg2 Na5 17.Qe5? (17.f4 c6 18.Qa4 Rd8–/+) 17...c5 (better 17...Qa4!? 18.Nb1 Nb3 19.ab3 Qa1–+) 18.f4 Rd8 19.Rb1 (better 19.f5 Nc4 20.Nc4 Bc4 21.Qe8 Re8 22.Nf4–/+) 19...Ba2 20.Rb2 Nc4?? (20...Bd5 21.Qe8 Re8 22.Rg1–+) 21.Nc4?? (better 21.Qe8 Re8 22.Ra2 Na3 23.Ra3+–) 21...Bc4–+ 22.Qe8 Re8 23.Ne5 Nd5 (better 23...Bd5 24.0–0 Re6–+) 24.Nc4–/+ Nb4?? (better 24...Nf4 25.0–0 Ng2 26.Kg2 Re2 27.Kg3 Re7=) 25.Kd1 g6 26.Nd6 Re7 (26...Rd8 27.Nb5 a6 28.Na7+=) 27.Ne4 (27.f5 Rd7 28.Ne4 Kg7+–) 27...Kg7 28.g5 (better 28.f5!? Kh7 29.h4+–) 28...hg5= 29.fg5 Rh4 30.Nf6 (30.Nd6 Re6 31.Nc8 a5=) 30...a5 (30...Re5!? 31.Rh2 Rg5 32.Ne8 Kf8–+) 31.Nd5= Nd5 (31...Re5!? 32.Nb6 Rg5=) 32.Bd5+= Re5 33.Bc4 Rg5 34.Rb6 Rg3 35.Rb7 Rhh3 36.Rf7 (36.Bf7?? Rh1 37.Kc2 Kf6–+) 36...Kh6 37.Rh3 Rh3 38.Ra7 Ra3 39.Kc2 g5 40.Kb2 Ra4 41.Bb3 Rb4 42.Ra6 (42.Ka3 a4 43.Ra4 Rb7+–) 42...Kh5+– 43.Ka3 (worse 43.Ra5 c4 44.Ra4 Rb3 45.Kc2 Rh3 46.Rc4 d3 47.ed3 g4=+) 43...g4? (better 43...c4!? 44.Bc2 Rb5+–) 44.Ra5+– g3?? (44...Rb7 45.Rc5 Kh6+–) 45.Rc5 Kh4 46.Kb4 g2 47.Rc1 Kh3 48.Bd5 Kh2 49.d3 (better 49.Bg2 Kg2 50.Kc4 Kf2+–) 49...g1Q 50.Rg1 Kg1 51.Kc5 Kf2 52.Kd4 Ke2 53.Ke5 (better 53.Bc6 Kd2 54.Be4 Kc2+–) 53...Ke3?? (better 53...Kd3 54.Ke6=) 54.d4 Kd3 55.Be4 Kc3 56.d5 Kc4 57.d6 Kc5 (57...Kb4 58.d7 Kb3 59.d8Q Kc3 60.Qd3 Kb2 61.Qc2 Ka3 62.Bc6 Kb4 63.Qb2 Kc4 64.Bb5 Kc5 65.Ba4 Kc4 66.Qd4) 58.Ke6 (58.d7 Kb6 59.d8Q Kc5 60.Qd4 Kb5 61.Bd3 Kc6 62.Ba6 Kc7 63.Qd6) 58...Kb6 59.Ke7 Kc5 60.d7 Kd4 61.d8Q (61.Bg2 Ke3 62.d8Q Kf4 63.Qd3 Kg5 64.Qe4 Kh6 65.Qh4 Kg7 66.Be4 Kg8 67.Qh7) 61…Ke4 ½–½. beatmeeasy (1905) – Temuujin0523 (1995), lichess.org, 2020.

3.h4 h6 4.Nf3= Nc6 (4...f6!?=) 5.b5+– Nb4 6.Bd4 Bf5 7.d3 Nf6? (7...Bg4 8.c3 Bf3 9.gf3+–) 8.Bc3?? (better 8.Bf6 ef6 9.a3+–) 8...Nbd5+– 9.Bb2 Qd7? (better 9...Nb6!?+–) 10.e4+– Be4 (10...Qb5 11.Bf6 (11.ef5 Qb2 12.Nbd2 Nc3–/+) 11...ef6 12.ef5+–) 11.de4 Qe6 (11...Ne4 12.Qd4 Qe6 13.Ne5+–) 12.e5 Ng4 13.c4 Nb4 (13...Nf4 14.Qd4 Qf5 15.Nbd2+–) 14.a3 (better 14.Qa4+–) 14...Rd8 15.Qb3 (better 15.Nd4 Qe5 16.Be2+–) 15...Ne5?? (15...Qb6 16.Bd4 Rd4 17.ab4 Re4 18.Kd2 Qf2 19.Kc1 Ne5+–) 16.Be5 f6 17.ab4 fe5 18.Ra7 e4 19.Nfd2 Qb6 20.Qa3 e3 21.fe3 (21.Qe3 Qe3 22.fe3 Rb8+–) 21...e5 22.Ra8 (22.c5!? Qg6 23.Rb7 Qg3 24.Ke2 Qg4 25.Kf2 Be7 26.Rc7 Bh4 27.Kg1 0–0+–) 22...Be7 23.Rd8 Bd8 24.c5 Qg6 25.Qd3 Qg3 26.Kd1 0–0 27.Qd5 Kh8 28.Qb7 (28.Qe4 Bf6+–) 28...Bh4 (28...Qe3 29.b6! cb6 30.c6+–) 29.Rh4! Qh4 30.Qc7 Qb4 (30...Qg4 31.Be2 Qg2 32.Qe5 Qh1 33.Kc2+–) 31.b6 (31.Bc4!? Qa4 32.Ke1 Qa8+–) 31...Qa4 32.Ke1 Qg4 (32...Qh4 33.Ke2 Qg4 34.Kd3 Qf5 35.Kc3 Qe6+–) 33.b7 Qg3 34.Kd1 Qe3 35.b8Q Rb8 36.Qb8 Kh7 37.Be2 (37.c6 Qd4 38.c7 Qa4 39.Qb3 Qb3 40.Nb3+–) 37...Qg1 38.Kc2 Qc5 39.Nc4 (39.Nc3 Qe7+–) 39...Qf2 40.Qe5 Qg2 41.Nc3 Qg6 (41...Qf2+–) 42.Qe4 (42.Bd3 Qd3 43.Kd3 h5 44.Qh5 Kg8 45.Nd6 g5 46.Qg6 Kf8 47.Qf7) 42…Qe4+– (42...Qe4 43.Ne4 Kg6+–). beatmeeasy (1855) – Maxoliveira (1795), lichess.org, 2020.

3.a3 a5

4.b5 e5 5.Nf3 f6 6.e3 de3 7.fe3 Be6 =.

4.e3 de3 5.fe3 ab4 6.ab4 Ra1 7.Ba1 Nf6 =.

4.Nf3 f6 5.Nd4 e5 6.Nb3 ab4 7.e4 Be6 =.

3.a3 a6

4.e3 de3 5.fe3 Nf6 6.Nf3 e6 7.Bd3 Nbd7 =.

4.e4 Nc6 5.Nf3 e5 6.c3 Bg4 7.Bc4 Qf6 =.

4.Nf3 Nc6 5.e3 de3 6.fe3 Nf6 7.Be2 Qd6 +=.

3.b5 b6

4.a4 c5 5.e3 e5 6.Nf3 f6? (better is 6...Nd7!? 7.ed4 ed4+/–) 7.Bc4 (7.Ne5!? Qd5 8.Nf3 Ne7+–) 7...Ne7 8.0–0 Nd5?? (better is 8...Bb7+–) 9.Bd5 (better is 9.Ne5 Be6 10.Qh5 Ke7 11.Nd3+–) 9...Qd5+= 10.Re1 Be7 11.h3 0–0 12.Nh2?? (12.ed4!? cd4 13.Bd4+=) 12...de3 (12...Bb7 13.Nf3 e4 14.ed4 Qd7+= (worse is 14...ef3 15.Re7 Rf7 16.Re8 Rf8 17.Rf8 Kf8 18.Qf3+/–)) 13.de3 Nd7?? (better is 13...Qd1 14.Rd1 Bf5=) 14.Qd5+– (14.Qd5 Kh8 15.Qa8+–) 1–0. ventil – fersteiman, kurnik, 2014.

4.c4 (better is 4.Nf3!?+/–) 4...e5+= 5.e3 Bc5 6.d3 (6.Nf3 Bg4 7.Be2+–) 6...Nf6+= 7.e4 0–0 8.Ne2 (8.Nf3!? a6 9.Nbd2+= (9.Ne5? Qe8 10.f4 ab5–/+)) 8...Be6 9.g3 Nbd7 10.Bg2 Rb8 (better is 10...a6!? 11.0–0 ab5 12.cb5 Qe7–/+) 11.0–0 Bg4 12.Qc2 Nh5 13.h3 Be6 14.Nd2 Qc8 15.g4 Nf4 16.Nf4 ef4 17.f3 (17.Nf3 h5 18.g5 f6+=) 17...Nf6 (better is 17...Ne5+=) 18.Nb3+/– Rd8 19.a4 h5 20.a5 hg4 21.hg4 (better is 21.fg4 Bd6 22.Bd4+/– (22.Nd4 Bc5–/+)) 21...Bg4?? (better is 21...c6=) 22.fg4+– Ng4 23.Rf4 Ne3 24.Qf2 Ng2 (24...Rd6 25.Rf3 Qe6+–) 25.Qg2 Qe6 (25...Rd6 26.Rg4 g6 27.Nc5 bc5 28.Ba3+–) 26.Raf1 Qg6 (26...Rd6 27.Nc5 bc5 28.Rf7 Qf7 29.Rf7 Kf7 30.Qf3 Kg8 31.Qg4+–) 27.Rf7 Qg2 28.Kg2 Rf8 (28...Rd6 29.Nc5 Rg6 30.Kh3 Rh6 31.Kg4 bc5 32.Rc7 Rg6 33.Kh4 Rh6 34.Kg5+–) 29.Rf8 (better is 29.Rc7 Rfc8 30.Ra7 ba5 31.Nc5 Rc5 32.Rg7 Kg7 33.Bd4 Kh6 34.Bc5 Rg8 35.Kf3 Rd8+–) 29...Rf8 (29...Bf8 30.a6 c6 31.bc6+–) 30.Rf8 (30.Nc5 Rf1 31.Kf1 bc5 32.Bd4 Kf7+–) 30...Kf8 (30...Bf8 31.Bd4 Kf7 32.c5 ba5 33.Na5+–) 31.Nd4 (better is 31.Nc5 ba5 32.Bd4 Ke7 33.Bg7 Kd6+–) 31...Bd4 32.Bd4 Kf7 (32...ba5 33.Ba7 Ke7+–) 33.a6 g6 34.Kf3 Ke6 35.Kf4 (35.Bb6 cb6 36.c5 bc5+–) 35...Kf7 36.Ke5 Kg8 37.Ke6 Kh7 38.Kd7 g5 39.Kc7 g4 40.Kb7 g3 41.Ka7 g2 (41...Kg6 42.Kb6 Kf7 43.a7 Ke6 44.a8Q Kf7 45.Qb7 Ke8 46.Bf6 Kf8 47.Qe7 Kg8 48.Qg7) 42.Kb6 Kg6 (42...g1Q 43.Bg1 Kg6 44.a7 Kf7 45.a8Q Kg7 46.Bc5 Kf7 47.Qf8 Kg6 48.Be3 Kh5 49.Qf5 Kh4 50.Bf2) 43.a7 1–0. captainevans – szirow, kurnik, 2013.

3.c3 dc3

(--> 3.c4 dc3).

4.Nc3 e5 5.Nf3 Bb4 6.Ne5 (--> 3.Nf3 e5 4.Ne5 Bb4 5.c3 dc3 6.Nc3).

3.c3 Nc6

4.b5 Na5 5.cd4 Nc4 6.Bc3 Bd7 7.a4 e6 8.e4 Nd6 9.d3 c6 10.e5 (10.bc6!? Bc6 11.Nf3+=) 10...Nf5= 11.Nf3 h5 (11...cb5 12.ab5 Bb5 13.Be2+=) 12.Nbd2 (better is 12.Qb3+=) 12...c5?? (better is 12...cb5 13.ab5 Bb5=) 13.dc5+– Bc5 14.d4 Be7 15.Ne4 Rh6 16.Bd3 f6 17.Qb3 Qb6 (17...Rh8 18.Bc4+–) 18.ef6 gf6 19.Ng3 a5?? (better is 19...Ng3 20.hg3 a6+–) 20.Bf5 (20.Nf5 Rh8 21.Ne3 Nh6+–) 20...Kf7 (20...0–0–0 21.Bh3 Kb8 22.Bd2+–) 21.Bc2 h4 (21...Rh8 22.Nh4+–) 22.Ne4 (22.Nf5 Rh8 23.N5h4 Rc8+–) 22...Kg7 (22...h3 23.Rg1+–) 23.Bd2 Rh5 24.Be3 (24.Nh4!? Qd4 25.Rd1 Qe5+–) 24...Bb4 25.Kf1 Rc8 26.d5 Qd8 (26...Qc7 27.de6 Bb5 28.ab5 Qc2 29.Qc2 Rc2 30.Nd4+–) 27.de6 Be8 28.Bd1 (better is 28.Rg1 Rh7+–) 28...Bg6 29.Nd4 (29.Ned2 Ne7+–) 29...Rh8 (29...Re5 30.Bc2 Be4 31.Be4 Re4+–) 30.Bf3 Be4 (30...Ne7 31.Rd1 Qc7 32.Ne2+–) 31.Be4 Rc3 (31...Ne7 32.Bb7 Rc3 33.Qd1+–) 32.Nf5 (32.e7!? Qe7 33.Nf5 Kf8 34.Ne7 Rb3 35.Ng6 Kg7 36.Nh8 Kh8 37.Bb7 Ne7+–) 32...Kf8 33.Qb2 (33.Rd1 Qe8 (33...Rb3?? 34.Rd8) 34.Qd5 Rc8+–) 33...Rc4 (33...Qc7 34.Rd1 Be7 35.Kg1+–) 34.Bb7 Rh5 (34...h3 35.Qe2 Qc7 36.Rd1+–) 35.Qb1 (better is 35.Qe2!? Rf5 36.Qc4 Re5+–) 35...Bd2 (35...Bc3 36.Be4 Ne7 37.Ne7 Ke7+–) 36.Bf3 White intends b6 36...Rh8 (36...Rh7 37.Bd2 Qd2 38.Ne3+–) 37.b6 (better is 37.Qb3 Rc3 38.Qc3 Bc3 39.Bc5 Ne7+–) 37...Rc1 (37...Be3 38.Ne3 Rc8+–) 38.Bd1 (better is 38.Qc1 Bc1 39.Bc5 Ne7 40.Be7 Qe7 41.Ne7 Ke7 42.Rc1+–) 38...Rb1? (better is 38...Be3 39.Qb3 Ra1 40.Ne3 Rh7+–) 39.Rb1 (39.Bc5 Ne7 40.Be7 (40.Rb1?? Qd3 41.Kg1 Qb1 42.Be7 Ke8–+) 40...Qe7 41.Ne7 (41.Rb1 Qe6 42.Ne3 Be3–+) 41...Ra1 42.Ng6 Kg7 43.Ke2+–) 39...Be3 (39...Qd3 40.Kg1 Qb1 41.h3 Qd1 42.Kh2–+) 40.Ne3?? (40.Be2 Bb6 41.Rd1–+) 40...Qd3 41.Kg1 Qb1 42.h3 Ne7 43.Kh2 Qb6 44.Bg4 (44.Re1 Qe6 45.Kg1 Rg8–+) 44...Kg7 (44...f5!? 45.Bf3–+) 45.Rd1 Qc7 (45...Kg6!? 46.Kg1–+) 46.Kg1 Rd8 47.Rb1 (47.Rd7 Rd7 48.ed7 Kf8–+) 47...Rd4 48.Ra1 Rb4 0–1. pittol – onin7, gameknot.com, 2015.

4.b5 dc3 5.Bc3 Nd4 6.a4 e5 7.e3 Ne6 8.Be5+/– f6 9.Bc3 Bd6 10.Nf3 Ne7 11.Qc2 0–0 12.h3 Nd5 13.Bc4 Nc3 14.Nc3 Kh8 15.Be6 Be6 16.0–0 Qd7 17.Ne4 Bb4 18.Nd4 Bh3? 19.gh3+– Qh3 20.Qc7 Qg4 21.Ng3 h5 22.Qf4 Qf4 23.ef4 h4 24.Ngf5 Bd2 25.Nh4 Kh7 26.f5 Rfd8 27.Ne6 Rd5 28.Ra3 Rc8 29.Rh3 Kg8 30.Rf3 Rc4 31.Ng6 Kf7 32.Rd1 Rc1 33.Rc1 Bc1 34.Kg2 Bh6 35.Nc7 Rd4 36.a5 Ra4 37.a6 ba6 38.ba6 Ra5 39.Nh4 Bg5 40.Ng6 Rc5?? 41.Na8 Rc6?? 42.Nh8 Kg8 43.Ng6 Ra6?? 44.Rd3 (44.Rd3 Re6 45.Rd8 Re8 46.Re8 Kf7 47.Rf8 mate) 1–0. martin78ns – gunarsp, kurnik, 2011.

4.b5 dc3 5.Bc3 Nd4 6.e3 Ne6 7.d4 c5 8.Qa4 (8.bc6 bc6 9.Nf3 Nf6+/–) 8...b6 9.Bc4 cd4 10.Be6 dc3 11.Bc8 Qc8 (11...Rc8!? 12.Ne2 Qd3=) 12.Qc2 Qb7 13.f3 e6 14.Qc3 a5 15.a4?? (better is 15.ba6 Ra6 16.Ne2+=) 15...Bb4–+ 16.Kf2 Bc3 17.Nc3 Qc7 18.Nge2 Nf6 19.Rhc1 (19.Rac1 Qe5–+) 19...Qh2 20.Ne4 (20.Rh1 Qe5–+) 20...Ne4 21.fe4 Qh4 22.Kf1 Qe4 23.Rc3 0–0 24.Ng3 Qe5 25.Ne2 Rac8 26.Rac1 Rc3 27.Rc3 h6 28.Nd4 Qf6 29.Ke2 e5 30.Rc6 Qg5 31.Rb6 ed4 32.ed4 Re8 33.Kd3 Qe3 34.Kc4 Rc8 35.Kd5 Rd8 36.Rd6 Qb3 37.Kc6 Qc4 38.Kb6 Rd6 39.Ka5 Qd4 40.g3 Qc3 0–1. maddoxdb – garyconvey, gameknot.com, 2013.

3.d3 Nc6

4.a3 e5 5.b5 Nb4?? 6.ab4+– Bb4 7.c3 dc3 8.Nc3 Bd7 9.Nf3 Bb5 10.Qb3 a5 11.Ba3 Bc3 12.Qc3 f6 13.Qc5 Qe7 14.Qb5 c6 15.Qb6 Qd7 16.Rb1 Ne7 17.Qb7 Qb7 18.Rb7 0–0 19.Re7 Rfb8 20.d4 Rb1 21.Kd2 Ra1 22.Bc5 a4 23.e4 Rb8 24.Bc4 (24.Bc4 Kh8 25.Ra1 Rb2 26.Kc3 Rb8 27.Rb1 ed4 28.Kd2 Rf8 29.Rbb7 f5 30.Bd4 h5 31.Rg7 Rf7 32.Bf7 fe4 33.Rb8) 1–0. pierre – oppocz, internet, 2010.

4.a3 Nf6 5.e4 (5.Nf3 a6=) 5...de3 (5...a6 6.Nf3=+) 6.fe3= e5 7.d4 (7.b5!? Nb8 8.Nf3=) 7...e4 (8.Nc3 Bd6=+) =+. xadrez – Jan van Dijk, ChessWorld.net, 2003.

4.b5 Ne5 5.c3 (5.e3 c5=) 5...e6 6.cd4 Bb4 (6...Ng6 7.Nf3+=) 7.Nd2+/– Bd2 8.Qd2 Ng6 9.Nf3 Nf6 10.e3 Qd5 (11.Rc1 Qa2+/–; 10...Bd7 11.Qb4+/–) +/–. Milan van Dijk – Jan van Dijk, ChessWorld.net, 2003.

4.Nf3 Nb4 5.Bd4 Nc6 6.Bb2 f6 7.d4+/– Nh6 8.d5 Nb4 9.e4 e6 10.a3 Na6 11.Nc3 ed5 12.Nd5 Nc5? 13.Nf6!+– gf6 14.Qd8 Kd8 15.Bf6 Ke8 16.Bh8 Ne4 17.Bd3 Nf7 18.Be4 Nh8 19.Bh7 Bb4 20.ab4 1–0. Anonymous – xacun, internet, 2011.

3.Bd4?? Qd4–+

4.c3 Qf6 5.Nf3 b6 (5...e5 6.d4 ed4 7.Nd4–+) 6.e3 Bg4 7.Be2 e5 8.0–0 e4 9.Nd4 Bd7 10.Qc2 c5?? 11.Qe4+– Qe7 12.Qe7 Be7 13.Nf3?? cb4–+ 14.cb4 Bb4 15.a3 Bd6 16.Nc3 a6 17.Nd4 Nc6 18.Nc6 Bc6 19.Rfc1 Nf6 20.Bf3 Bf3 21.gf3 0–0 22.a4 Rfc8 23.Ne4 Ne4 24.fe4 Rc7 25.Rcb1 Rb8 26.a5 b5 27.Ra2 Rbc8 28.f4 Rc1 29.Rc1 Rc1 30.Kf2 Bb4 31.Ke2 Rh1 32.Kf3 Rh2 33.Rc2 h5 34.Rc8 Kh7 35.Rc6 Rd2 36.Ra6 Ra2 37.Ra7 Ra5 38.Rf7 Bc5 39.Rf5 b4 40.Rh5 Kg6 41.Rg5 Kf6 42.e5 Kf7 43.f5 b3 44.Rg2 Ra2 45.e6 Kf6 46.Rg6 Kf5 47.Rg7 Ke6 48.Rb7 b2 49.Rb3 Ba3 50.Ke2 b1Q (50...b1Q 51.Kf3 Qf5 52.Kg3 Bd6 53.Kh4 Rh2) 0–1. Neumann,Frank (1650) – Baer,Cy (1895), RSS7E easy–66, 2007.

4.Nf3 Qa1 5.Nc3 Qc3 6.dc3–/+ Nc6 7.e3 Bd7 8.Bc4 0–0–0 (8...Nf6 9.Qe2–/+) 9.0–0 (9.Bf7 Bg4 10.Qe2 Nf6–/+) 9...Nb8 (better 9...Bg4 10.Bd3 Nf6–+) 10.Bf7= e6 11.Ne5 Nh6 12.Nd7?? (better 12.Qh5=) 12...Rd7?? (better 12...Nf7 13.Qg4 Nd7 14.Qe6 Nh6–+) 13.Qd7 (better 13.Be6 c5 14.Qd3+–) 13...Nd7 (13...Kd7!? 14.Rd1 Bd6 15.Bh5–+) 14.Be6 c6 (better 14...Bd6–+) 15.Rd1= Kc7 (better 15...Bd6! 16.Rd6 Rd8=) 16.Rd7+– (worse 16.Bd7 Bb4 17.cb4 Rd8–/+) 16...Kb6 17.Rd4 (17.a3 Ng8+–) 17...g6 (17...Be7 18.Rd7 Rd8 19.Rd8 Bd8 20.f4=) 18.a4 (18.Rd7 Nf5+=) 18...a5 19.b5? (better 19.ba5 Ka5 20.Rd7=) 19...cb5–+ 20.ab5 Nf5 21.Rd1 Nd6 22.g4? (22.c4!?–/+) 22...Kb5 (22...Nb5 23.Rb1 Kc5 24.f4–+) 23.Rb1 (23.f4 Be7–+) 23...Kc6 24.Kg2 Nb5 (24...Bg7 25.Rd1–+) 25.h3? (better 25.c4 Nc7 26.Bd5 Nd5 27.cd5 Kd5 28.Rb5 Bc5 29.Ra5–/+) 25...Nc3–+ 26.Ra1 b6 27.Kf1 (27.f4 Bc5–+) 27...Ne4 (better 27...a4!? 28.Kg2–+) 28.f4 (28.Rd1 Nc5 29.Bd5 Kc7–+) 28...Nc5 29.Bb3 Nb3 30.cb3 Bb4 31.Rc1 Kb7 (31...Bc5 32.e4–+) 32.Rd1 Rc8 33.Rd7 Ka6 34.Rh7 Rc3 35.Kf2 (35.Ke2 Rb3 36.e4 a4–+) 35...Rb3 36.Rb7 (36.Rg7–+) 36...Rb2 37.Kf3 Bd6 (37...Kb7!? 38.g5 Rh2 39.f5–+) 38.Rb6?? (better 38.Rg7 Bc5 39.Rg6–+) 38...Rb6 39.f5 gf5 40.gf5 Rb3 (better 40...a4 41.e4–+) 41.Ke4 Bf8 42.f6 a4 43.Kf5 a3 44.f7 a2 45.Kg6 (45.Kf4 a1Q 46.e4 Qf6 47.Kg4 Be7 48.f8Q Qg5) 45...a1Q (45...Rb5 46.Kf6 a1Q 47.Ke6 Qd1 48.e4 Qd6) 46.Kh7 (46.Kf5 Rb5 47.Ke4 Qd1 48.h4 Bh6 49.f8Q Qd5) 46...Qf6 (46...Qg7) 47.Kg8 Qe7 (47...Qg7) 48.h4 Re3 (48...Qf6 49.Kf8 Rb8) 49.h5 (49.h5 Qg5 50.Kf8 Qh6 51.Kg8 Rg3) 1–0. avz81 (1660) – Forosya (1740), lichess.org, 2018.

4.Nf3 Qa1 5.Nc3 Qd1 6.Kd1 Bg4 (6...e6 7.Nb5 Kd8 8.c3–+) 7.h3 (7.Nd5 Kd8 8.Ne5 Be6–+) 7...Bh5 (7...Bf3!? 8.gf3 e6 9.Rg1–+) 8.g4 Bg6 9.Bg2 e6 (better 9...Nd7 10.Nh4–+) 10.d4 (10.h4 h5 11.Ne5 c6–+) 10...Bb4 11.Kc1 (11.Nb5 Kd8 12.Nh4–+) 11...Bc3 12.Rd1 Nf6 (better 12...Na6 13.e3 Nb4 14.a3 Nc2 15.Ne5 Na3 16.Ng6 hg6 17.Rd3–+) 13.d5 Nd5 14.Ne5 Nc6 (better 14...Be5!? 15.c4 Nc3 16.Bb7 Na2 17.Kd2–+) 15.Nc4 0–0 (15...Nd4 16.e3 Ne2 17.Kb1–+) 16.e4 Nf4 17.Bf3 Nh3 18.Rd3 Bd4 (better 18...Be5 19.Rb3–+) 19.Ne5 Be5 20.Rb3 Nf2 21.Rb7 Nd4 22.Rc7 Nf3 23.g5 Ng5 (23...Rab8 24.Rb7 Rb7 25.c4 Bb2 26.Kc2 Be4) 24.Re7 Nge4 25.c4 Nc3 26.c5 (26.Rb7 Nfd1 27.Kd2 Rad8 28.Rd7 Rd7 29.Ke1 Bg3 30.Kf1 Ne3 31.Kg1 Rd1) 26...Rab8 27.Kd2 (27.Rb7 Rfd8 28.Kb2 Rd2 29.Ka3 Rb7 30.c6 Ra2) 27...Rb2 28.Ke3 (28.Ke1 Nd3 29.Kf1 Bh2 30.Ra7 Rf2) 28...Ng4 (28...Nd5 29.Kf3 Be4) 29.Kf3 Rf2 (29...Nh2 30.Ke3 Nd5) 30.Kg4 Rf4 (30...h5 31.Kh4 Rh2 32.Kg5 Ne4) 31.Kg3 (31.Kh3 Bf5 32.Kg2 Be4 33.Kh3 g5 34.Kg3 Ne2 35.Kh3 Rh4) 31...f5 (31...Ne4 32.Kg2 Rf2 33.Kh1 Bh2 34.Ra7 Ng3) 32.c6 (32.c6 Ne4 33.Kg2 Rf2 34.Kh1 Bh2 35.Rg7 Kg7 36.c7 Ng3). Agiant – Batts, lichess.org, 2018.

3.e4 e5

4.c3 Nc6 5.Nf3 d3 (5...dc3 6.Bc3 Nf6 7.Ne5 Ne5 8.Be5=) 6.Qa4 (6.b5 Nb8 7.Ne5 Qe7+/–) 6...Bd7 (better is 6...a6!? 7.b5 Na7 8.b6 Bd7+=) 7.b5+/– (7.Bd3 Nb4 8.Bb5 Nd3 9.Ke2 Nb2 10.Bd7 Qd7 11.Qd7 Kd7 12.Ne5 Ke6–+) 7...Nb8 8.Bd3 (8.Ne5 Qg5 9.Qd4 Nf6+/–) 8...Bd6 9.c4 (9.Be2 Qe7+/–) 9...c6 (9...Bg4!?+/–) 10.Ne5+– Be5 (10...Qg5!? 11.bc6 Nc6 12.Nd7 Qg2+/–) 11.Be5 Qg5 12.Bb8 (12.Bg3 Nf6+–) 12...Rb8? (better is 12...Qg2 13.Rf1 Rb8 14.Qa7 Qh2+=) 13.Qa7+– Qe5 (13...Rd8 14.Bf1 (14.Qb7?! Qg2 15.Rf1 Ne7+/–) 14...Nf6 15.f3+– (15.Qb7?! Qe5 16.Nc3 Ne4=)) 14.Nc3 Nf6 15.0–0 0–0 16.Rae1 Ng4 Threatening mate: Qxh2 17.g3 Qh5 18.h4 Ne5 19.Be2 Qg6? 20.h5 Qf6 21.f4 Ng4 22.e5 Qh6 23.Kg2 Qh5 24.Qd4 Qh2 25.Kf3 Qh3 26.Ke4?? Rbd8 27.Rb1?? Bf5!!–+ 28.Kf5 A deflection 28...Rd4 29.Bg4 g6 30.Kg5 White plans f5 30...h6 31.Kf6 Qg4 32.f5 Qg5 0–1. Wloka,Frank – Jacob,Stephan, desc–online.de, 2004.

4.Nf3 Bg4 5.Be2 Bf3 6.Bf3 Bb4 7.c3 Bc5 8.Qa4 c6 9.cd4 ed4 10.0–0 b5 (better is 10...Nd7!?=) 11.Qc2+/– Qe7 (better is 11...Nd7 12.a4 b4+=) 12.Qb3?? (better is 12.e5 Nd7 13.Bc6+–) 12...Nh6 (12...Nd7!?+=) 13.Re1 0–0 14.d3 (14.e5!?=) 14...Nd7+= 15.Nd2 a5 16.a4 Rfb8 17.ab5 (17.Qc2!?=) 17...Rb5–/+ 18.Qc2 Ne5 19.Bh5? (19.Be2 a4–/+) 19...Qd8 (19...Rb2 20.Qb2 Nd3 21.Qc2 Ne1 22.Re1–+) 20.Nb3 (20.Reb1 Qh4 21.Be2 Nhg4 22.Bg4 Qg4–/+) 20...Bb4 (20...Rab8 21.Nc5 Rb2 22.Qd1–+) 21.Nd4? (better is 21.Reb1!? c5 22.h3–/+) 21...Rc5–+ 22.Qe2 g6 23.Bf3 (23.Nc2!? Be1 24.Ne1 Nd3 25.Nd3 Rh5 26.h3–/+) 23...Be1–+ (23...Nf3?! 24.Nf3 (24.Qf3? Be1 25.Re1 a4–+) 24...Be1 25.Ne1–/+) 24.Re1 Nf3 (24...a4 25.Ba1–+) 25.Qf3 (better is 25.Nf3 a4 26.Bd4–/+) 25...Qe7?? (better is 25...a4!?–+) 26.Qh3 (better is 26.Ba3 Qe5 27.Bc5 Qc5 28.Qf6+=) 26...Ra6?? (better is 26...Rh5 27.Qe3 a4 28.Nc6 Qd6–/+) 27.Qh6 (better is 27.Qc8 Qf8 28.Qa6+–) 27...Rc2 (27...Rh5 28.Nc6! Rh6 29.Ne7 Kf8+–) 28.Nc2 (28.Nf5 f6 29.Ne7 Kf7 30.Qh7 Ke8 31.Nf5 gf5 32.ef5 Kf8 33.Bf6 Ra7 34.Qh8 Kf7 35.Qg7) 28...Qf8 (28...f6 29.Ba3 Qf7 30.Nd4+–) 29.Qf4 Rb6 (29...c5 30.Qe5 f6 31.Qd5 Qf7 32.Qc5+–) 30.Qe5 (better is 30.Qf6 Rb2 31.Qb2 c5+–) 30...f6 31.Qe6 (better is 31.Qc3 Rb7+–) 31...Kg7 (31...Qf7 32.Qf6 Qf6 33.Bf6+–) 32.Qd7 Qf7 33.Bf6! Kf6 34.Qd8 Qe7 35.Qb6 Kg7 36.Qa5 Kh6 37.Re3 c5 38.Qc3 g5 39.Rh3 Kg6 40.Ne3 1–0. rimazu (2035) – presort (1970), net–chess.com, 2015.

3.Nf3 a6

4.a4 Nc6 5.b5 Na5 6.Bd4 Nc4 (6...ab5 7.ab5 Nf6 8.Nc3+–) 7.e3 Nd6 (7...ab5 8.Nc3+–) 8.Bd3 (8.ba6!? ba6 9.Nc3 Nf5+–) 8...ab5 9.ab5 Ra1 10.Ba1 e6 11.c4 (11.0–0 Nf6+–) 11...Nf6 (11...Nb5 12.Ne5 (12.cb5?! Qd3 13.Be5 Qc4=) 12...Nd6 13.Nc3+–) 12.Qc2 b6 13.0–0 Bb7 14.Nc3 Bf3 15.gf3 Qa8 (15...g6 16.Bb2+–) 16.e4 Nh5 17.Ne2 Be7? (better 17...Nb7+–) 18.c5 (18.c5 bc5 19.Qc5+–) 1–0. DEFFM – GuestKFNT, freechess.org, 2019.

4.Bd4 c6 5.e3 Nf6 6.Bf6 ef6 7.a3 Bd6 8.c4 0–0 9.Be2 Re8 10.0–0 Bg4 11.Nd4 Bd7 12.Nc3 Qc7 13.Nf3 c5 14.bc5 Bc5 15.Qc2 Bd6 16.Ne4 Bf8 17.Ng3 Bc6 18.Nd4 Bd6 19.Bf3 Bg3 20.fg3 Nd7 21.Bc6 bc6 22.Qe4?? (better 22.Nf5+–) 22…Re4–+ (22...Re4 23.Ra2 c5–+) 0–1. aravind555 (1630) – skdas838 (1660), lichess.org, 2019.

4.Nd4 e5 5.Nf3 Nc6 6.Ne5+– f6? (better 6...Ne5 7.Be5 Nf6+–) 7.Nc6+– bc6 8.a3 Bb7 (8...a5 9.b5!+–) 9.e4 c5 (9...a5 10.b5+–) 10.Bc4 Be4 11.0–0 a5 (11...Bg6 12.Re1 Be7+–) 12.Re1 f5 (12...Be7 13.Re4 ab4 14.Qh5 g6 15.Qc5+–) 13.Re4! fe4 14.Qh5 g6 (14...Kd7 15.Bg7 Kc6 16.Bh8+–) 15.Qe5 Qe7 (15...Be7 16.Qh8 Kd7 17.Qh7+–) 16.Bb5 Kd8 17.Qd5 Qd6 18.Qa8 Ke7 19.Qe8 1–0. Pierre – Kayman, internet, 2019.

3.Nf3 b5?

4.Bd4 a5 5.e3 ab4 6.Bb5 c6 7.Bc4 e6 8.a4 ba3.

4.Bd4 a5 5.e3 ab4 6.Bb5 Bd7 7.Qe2+–.

4.Bd4 Bb7 5.e3+– e6 (5...a6+–) 6.Bb5 c6 7.Ba4 Bb4?? (better 7...Nf6 8.a3 a5 9.ba5 Nbd7+–) 8.Bg7 1–0. GuestMWRJ – GuestMVDT, freechess.org, 2017.

4.Nd4 a6 5.e3 (5.Nf3+/– Nf6 6.a4 e6 7.c3 Bb7 8.e3 ba4+/–) 5...e5 6.Qf3 Ra7 7.Nb3 Bb7 8.Qg3 f6+/–.

4.Nd4 c6 5.e3 (5.e4 e5 6.Nb3 Nf6 7.a4 Bb4 8.Be5 0–0+/–) 5...Nf6 6.Nb5 a5 7.Qf3 ab4 8.Be5 Bg4+/–.

4.Nd4 e5 5.Nb5!? a6 6.N5a3+/– Nf6 7.Nc4 Bb4 8.Ne5 0–0+/–.

4.Nd4 e5 5.Nf3 e4+= 6.Nd4 a6 7.a4 ba4 8.Ra4 Bd7 9.b5! a5 (9...ab5 10.Nc3 Double attack (10.Ra8 Pinning; 10.Ra8 Deflection; 10.Nc3 Decoy); 9...Bb5 10.Nc3 Double attack (10.Nc3 Decoy)) 10.Nc3 f5 (10...Nf6 11.e3+–) 11.e3 Nf6 12.f3 c5 (12...Bd6 13.Bc4+–) 13.Nb3 Be7 (13...ef3 14.Qf3 Ra7 15.Bc4+–) 14.Bc4 Qb6 15.fe4 fe4 16.Nd5 Nd5 17.Bd5 (17.Bg7 Qg6 18.Bh8+– (18.Bd5?! Bh4 19.g3 Bg3 20.hg3 Qg3 21.Kf1 Bh3 22.Rh3 Qh3 23.Ke1 Qh4 24.Ke2 Qh5 25.Ke1 Qh4 26.Ke2 Qh5 27.Ke1 Qh4=)) 17...Ra7? (17...Bb5 18.Re4 (18.Ba8?! Ba4 19.Bg7 Rg8+–; 18.Be4?! Ba4 19.Ba8 Bb3 20.cb3 Bf6 21.Bf6 Qf6+–; 18.Bg7?! Ba4 19.Bh8 Bc6 20.Qh5 Kd8+–) 18...Bc6 19.Qh5 Kd8 20.Re7 Ke7 21.Qg5 Ke8 22.Bg7+–) 18.Qh5 (better 18.Bg7 Bb5 19.Re4 a4 20.Bh8 ab3 21.Bb3 Kd8+–) 18...Kd8 (18...g6 19.Qe5 Rf8 20.c4+–) 19.Bg7 (19.Re4?! g6 20.Qh6 Re8+–) 19...Bb5 (19...Be8 20.Qg4 Qb5 21.Ra5 (21.Bh8?! Qa4 22.Qf4 Nd7+–) 21...Ra5 22.Na5 (22.Bh8?! Ra4 23.Qg8 Nd7+–) 22...Qb1 23.Kf2 Qh1 24.Nb7 (24.Bh8?! Qh2 25.Be4 Bg6+–) 24...Kc7 25.Qe4+– (25.Bh8?! Qh2 26.Be4 Nc6+–)) 20.Re4 (20.Ra5 Be8 21.Qe5 Nd7 22.Qe4 Bg6+–) 20...Re8 21.Re6 Qc7 22.Be5 (22.Qh7?! Nd7+–) 22...Qd7 (22...Qc8 23.Rb6 Nd7 24.Rb5 Ne5 25.Na5 Bd6+–) 23.Rb6 (23.Bb8 a4 24.Ba7 Qa7+–) 23...Na6 24.Be6 Qc6 25.Rc6 Bc6 26.0–0 Bb5 (26...Nb4 27.Bg3 Nd3 28.cd3+–) 27.Bh3 Bf1 28.Qg4 Ra8 29.Qd7 1–0. marekt – delightful_porridge, ChessWorld.net, 2016.

3.Nf3 Qd5

4.Bd4 Qc4 5.c3 Nc6 6.e3 Nd4?? (better 6...Qd5 7.c4 Qd8+–) 7.Bc4+– (7.Bc4 Nf3 8.Qf3+–; 7.cd4?! Qb4 8.Nc3 Nf6=; worse 7.Nd4 Qd5+–) 1–0. GuestWRJS – GuestVDWV, freechess.org, 2017.

4.e3 Nc6 5.b5+/– (5.ed4?! Qe4 6.Be2 Nb4=) 5...Nb4? (better is 5...Ne5 6.Nd4 Nf6+/–) 6.a3+– (6.Nd4?! e5 7.Nc3 Qd6+/–; 6.Bd4?! Bf5 7.Nc3 Qd6+/–) 6...de3 7.fe3 (7.ab4?! ef2 8.Kf2 Qd6+–) 7...Nc2 8.Qc2 c5 9.Nc3 Qd6 (9...Qd8 10.Na4+–) 10.Ne4 Qb6 11.Nc5 e6 12.Bd4 Nh6 (12...Qd8+–) 13.Na6 Qd6 14.Nc7 Ke7 (14...Kd8 15.Na8 Qb8+–) 15.Bc5 Kd7 16.Bd6 Bd6 17.Na8 b6 18.Rc1 (better is 18.Qa4 Rd8+–) 18...Bb7 19.Nc7 Bf3 20.gf3 Nf5 21.Qc6 Ke7 22.Qb7 Bc7 23.Rc7 Kf6 24.Rf7 Ke5 (24...Kg6 25.Rf5! Kh6 26.Rg1 Rg8 27.Qe7 g6 28.Rf7 g5 29.Qe6 Kh5 30.Rh7) 1–0. Fournier,Frederic (2090) – Botaerd, Active, 2012.

3.Nf3 Bf5

4.Nd4 Bc2?? 5.Qc2+– e5 (5...e6 6.g3+–) 6.Nf3 (better 6.Qe4 Nd7 7.Nf5 g6+–) 6...e4 (6...f6 7.a3 Bd6+–) 7.Qe4 Kd7 (7...Ne7 8.Qb7 Nbc6 9.Ne5+–) 8.Qf5 (better 8.Ne5 Kc8 9.Nf7+–) 8...Kc6 (8...Ke8+–) 9.Ne5 Kb6 10.Nc4 Kc6 (10...Ka6 11.Qa5) 11.b5 1–0. DEFFM – bryanlewis, freechess.org, 2016.

4.Nd4 Be4 5.e3 Nc6 (5...e5 6.Nf3 Bb4 7.Ne5+–) 6.Bb5 (6.Nc3 Bd5+–) 6...a6 (6...e5 7.Nc6 bc6 8.Be2+–) 7.Bc6+– bc6 8.0–0 Qd6 (8...e5 9.Nf3 f6 10.Nc3+–) 9.f3 (9.d3 Bg6 10.Qf3 e5 11.Qc6 Qc6 12.Nc6 f6+–) 9...Bd5 (9...Bg6 10.Ba3+–) 10.a3 Nf6 0–1. GuestZFVQ – GuestQXSN, freechess.org, 2018.

4.Nd4 Bg6 5.e3 f6 (5...Nd7 6.h4 h5 7.Nf3+–) 6.c4 (6.Bb5 c6 7.Ne6 Qd6+–) 6...e5 (6...Qd7 7.Qf3 c6 8.c5+–) 7.Ne6 Qe7 (7...Qd6 8.Nf8 Qf8 9.Qa4 Nc6 10.c5+–) 8.Nf8 Qf8 (8...Kf8 9.a3+–) 9.b5 (9.Qa4 Nc6 10.c5 Nge7+–) 9...Qb4 (9...Nd7 10.Be2+–) 10.Bc3 Qc5 (10...Qd6 11.d4+–) 11.a3 (11.d4 ed4 12.Bd4 Qe7+–) 11...Ne7 (11...Qe7 12.Be2+–) 12.Bb4 (12.d4 ed4 13.Bd4 Qf5+–) 12...Qb6 13.Be2 (13.d4 Nd7+–) 13...Nd7 (13...c5 14.Bc3+–) 14.0–0 (14.Be7 Ke7 15.0–0 Rhd8+–) 14...Nf5 (14...c5 15.bc6! Nc6 16.Bc3+–) 15.Nc3 0–0–0 (15...c5 16.bc6! bc6 17.Qa4+–) 16.Nd5 (16.Bg4 c5 17.bc6 Qc6+–) 16...Qe6 17.a4 (17.Bg4 e4 18.f3 Qe5+–) 17...Rhe8 (17...Kb8 18.a5+–) 18.a5 (better 18.Ba5 Nb6 19.Bg4+–) 18...Ne7? (better 18...c5 19.bc6! bc6+–) 19.b6 Nd5 (19...ab6 20.Be7 Re7 21.Ne7 Qe7 22.d4+–) 20.cd5 Qd5 21.ba7 (21.ba7 b5 22.Bb5+–) 1–0. GuestVSPS – GuestLPVZ, freechess.org, 2016.

4.Nd4 Bg6 5.g3 e6 (5...e5 6.Nf3 e4 7.Nh4+=) 6.Bg2+/– c6 7.b5 Bc5? (better is 7...Qb6+/–) 8.bc6+– Na6 (8...bc6 9.Nc6 Qb6 10.Bg7 Bf2 11.Kf1 Nc6+–) 9.cb7 Rb8 10.Nc6 Qb6 11.Nb8 (11.Bg7 Qb7 12.c4 f6 13.Bh8 Nb4+–) 11...Bf2 12.Kf1 Nb8 13.Bg7 f6 (13...Bd4 14.Bh8 Bh8+–) 14.Bh8 Qb2 (14...Bd4 15.c3 Qb2 16.Na3 Bc3 17.Rc1+–) 15.Nc3 Bc2 (15...Bb6 16.Rb1 Qa3 17.e3+–) 16.Qc1 Qc1 17.Rc1 (17.Rc1 Bb6 18.Rc2+–) 1–0. Janek – Nick, internet, 2016.

3.g3 Nc6

4.Nf3 e5 5.b5 Nb4 6.a3+= Nd5 7.Ne5 Bd6 8.Bd4+– Be5 9.Be5 Qe7?? 10.Bg7 Be6 11.Bh8 0–0–0 12.Bb2 1–0. pierre – zatoqov, internet, 2009.

4.Nf3 e5 5.b5 e4 6.bc6 ef3 7.ef3 bc6 8.Qe2 Qe7 9.Bd4+/– Qe2 10.Be2 Bf5 11.d3 c5+/– 12.Be5 Bd6?? 13.Bg7+– 1–0. Wall,Bill – Tarheel, internet, 2003.

3.g3 e5

4.a3 (--> 1.b4 e5 2.a3 d5 3.Bb2 d4 4.g3).

4.Nf3 Bd6 5.Bg2 Ne7 6.0–0 0–0 7.c3 a5 8.cd4 ab4 (Better is 8...ed4!? 9.b5 c5=) 9.de5–/+ Bc5 10.d4 Bb6 11.Qc2 Nbc6 12.e3 g6 (12...Re8!?+=) 13.Nbd2–/+ Nd5 14.Ne4 Bf5–/+ 15.Nh4 Be4 16.Qe4 Nde7 17.d5+– Nd5?! 18.Qd5 Qd5 19.Bd5 Ne7 20.Bb7 Ra7 21.Bg2 1–0. Wall,Bill – Wandering, internet, 2002.

4.Nf3 f6 5.c3 c5 6.bc5 Qa5 7.cd4+/– Qb5 8.Qc2+– Nc6 9.Nc3 Qb4 10.Nd5 Nd4 11.Nd4 Qc5 12.Nc7 Qc7 13.Qc7 ed4 14.e4 Ne7 15.Bb5 Kf7 16.Bd4 f5 17.Qd8 fe4 18.Bc4 (18.Bc4 Be6 19.Be6 Ke6 20.Qa8+–) 1–0. pierre – holyday6, internet, 2011.

3.h4 e5

4.Nf3 Nc6 (4...f6!?=+) 5.b5+= Nb4 6.Ne5 Qd5 7.Nf3 Qb5 8.Bd4 (better 8.Nd4 Nd3 9.ed3 Qb2 10.Nc3+=) 8...Nf6 (8...Qa4!? 9.d3 Qc2= (9...Nc2? 10.Kd2+–)) 9.e4 (9.a3 Nc6 10.Bf6 gf6+–) 9...Qh5 (9...Qa4 10.Bd3+=) 10.Bf6 gf6 (10...Qg6 11.Bb5 c6 12.Be2 Qf6 13.c3+–) 11.a3 Nc6 12.Qc1 Ne5 13.Nd4 Be6 14.Be2 (better 14.Nb5!? Kd8 15.d4+–) 14...Qg6= 15.Nb5 Qg2 16.Rf1 (16.Nc7? Kd7 17.Rf1 Nf3 18.Bf3 Qf3–+) 16...Bd6 (16...0–0–0!? 17.d4 a6 18.de5 ab5–/+) 17.Nd6+= cd6 18.f3 (better 18.Nc3!?+=) 18...Bh3 19.d4 (better 19.Qd1=+) 19...Qg1?? (better 19...Qg3 20.Kd2 Bf1 21.Qf1 Nc6–+) 20.de5 (better 20.Rg1 Nc6 21.Qf4+–) 20...Bf1= 21.Bf1 Qg3 22.Ke2 de5 (22...Qh2 23.Kd1 Qh1 24.Kd2 Qh4 25.Qb2 Qf2 26.Be2 de5 27.Qb5 Kf8 28.Qb4 Kg7 29.Nc3=) 23.Nc3 (23.Qe1 Qg1+=) 23...Qh2= 24.Ke3 0–0–0 25.Nd5 f5 (25...Qh4 26.Qe1 Qh6 27.Ke2=) 26.Qb2 f4 27.Kd3 Kb8 (27...f6 28.Qc3 Kb8 29.Qc7 Ka8 30.Rb1+–) 28.Rb1 b6 29.Qe5 Ka8 30.Kc3 Rc8 31.Nc7 Rc7 (31...Kb8 32.Bc4 Rc7 33.Qh8 Kb7+–) 32.Qc7 Qg1 33.Ba6 (33.Bb5 Qe3 34.Kc4 Qd4 35.Kd4 Rd8 36.Kc4 Rd4 37.Kd4 a6 38.Bc6) 33...Qg7 (33...Qc5 34.Qc5 bc5 35.Bb7 Kb8 36.Bd5 Kc8+–) 34.e5 (34.e5 Qe5 35.Qe5 Rc8 36.Bc8 h6 37.Qd5 Kb8 38.Qb7; 34.Kd3 Qc3 35.Kc3 Rb8 36.Qc6 Rb7 37.Qb7) 1–0. beatmeeasy (1885) – tellezpedro (1930), lichess.org, 2020.

4.Nf3 f6 5.c3 dc3 6.Bc3 Be6 7.Qa4 Nd7 8.h5 (8.e4 c6=) 8...Qb8 (8...e4 9.Nd4 Bd5 10.f3=+) 9.Rg1 (9.e4 c6=) 9...Bd6 10.g3 (10.e4 Ne7=) 10...Ne7 11.g4 b5 12.Qc2 c5 13.a3 (13.bc5 Bc5 14.h6 g6=+) 13...Nb6 (13...0–0!?=+) 14.bc5= Bc5 15.Be5 (15.h6 g6=) 15...fe5 (better 15...Bf2!? 16.Kf2 fe5=+) 16.Qc5+= Na4? (better 16...Nd7 17.Qc2 Nf6+=) 17.Qe5+– Qe5 18.Ne5 0–0 (18...a6 19.d4+–) 19.e4 (19.d4 Rad8 20.e3 a6+–) 19...a6 20.d4 Bb3 (20...Rad8 21.d5 Rf4+–) 21.Nd2 Bc2 22.Rc1 Rac8 23.Bd3 (23.g5!? Rc3 24.Rg3 Rfc8+–) 23...Bd3 24.Nd3 Rc1 25.Nc1 Nc3 26.Ne2 Rc8 27.Nc3 (27.Rg3 Na2+–) 27...Rc3 28.Rg3 Rg3 29.fg3 Kf7 30.Ke2 Ke6 31.Nb3 Kf6 32.Nc5 Nc6 33.Ke3 a5 34.Nb3 Kg5 (34...a4 35.Nd2+–) 35.d5 Ne5 36.Na5 Kg4 37.Kd4 Nd7 (37...Nf3 38.Kc5 Kg3 39.d6+– (worse 39.Kb5 Kf4+–)) 38.e5 Kh5 (38...Nb6+–) 39.e6 Nb8 (39...Nf6 40.d6 Kg5 41.d7+–) 40.d6 (40.e7 Kg4 41.e8Q b4 42.ab4 h6 43.Qb8 Kh3 44.d6 Kg2 45.Qb7 Kh2 46.Nc4 Kg3 47.Qg7 Kf3 48.Ne3 h5 49.Qg2 Kf4 50.d7 h4 51.Qg4) 40...Kg6 41.d7 (41.d7 h6 42.d8Q Kf5 43.e7 Kg4 44.e8Q Nc6 45.Nc6 Kf3 46.Qe3 Kg2 47.Qd5 Kh3 48.Qh1 Kg4 49.Qf4) 1–0. beatmeeasy (1875) – HeadlessHessian (1860), lichess.org, 2020.

4.Nf3 Nf6 5.Ne5 Bd6 6.Nf3 Bb4 7.Nd4 Bc5 8.Nb3 Bf2?? (better 8...Bd6+=) 9.Kf2+– Ne4 10.Kg1 Qf6 (10...Ng3 11.Rh2 0–0+–) 11.Bf6 (11.Bf6 Nf6 12.e3+–) 1–0. beatmeeasy (1920) – Petarxx (1915), lichess.org, 2020.

3.a3 c5

4.c3 (4.e3 de3 5.fe3 cb4 6.ab4 Nf6=) 4...e5 5.bc5 Bc5 6.cd4 ed4 7.d3 (7.e3!?=) 7...Nf6–/+ 8.Nd2 0–0 9.Ngf3 Nc6 10.Nb3 The pressure on the isolated pawn grows 10...Bb6 11.Nbd4?? (better 11.g3–/+) 11...Nd4–+ (11...Bd4?! 12.Nd4 Nd4 13.Qa4–+) 12.Bd4 Bd4 (12...Ba5 13.Nd2 Qd4 14.Rc1–+) 13.Nd4 Qd4 14.g3 (14.Qc1–+) 14...Qc3 15.Qd2 0–1. Pierre – Orampo, internet, 2020.

4.bc5 e5 5.Nf3 Nc6 6.e3 Bc5 7.Bb5 Bg4 =.

4.e3 de3 5.fe3 cb4 6.ab4 Nf6 7.b5 Bf5 =.

4.e4 e5 5.Qh5 Nc6 6.Bb5 Qf6 7.Nf3 Bd7 =.

4.Nf3 f6 5.bc5 e5 6.e3 de3 7.fe3 Bc5 =.

3.a3 f6

4.c3 dc3 5.Nc3 e5 6.Nf3 c5 7.bc5 Bc5 =.

4.e3 de3 5.fe3 e5 6.Bc4 Nd7 7.Bg8 Rg8 =.

4.e4 de3 5.fe3 e5 6.Bc4 Bd6 7.Nc3 a5 =.

4.Nf3 e5 5.c3 a5 6.b5 c5 7.bc6 Nc6 =.

4.f4 e6 5.Nf3 c5 6.c3 dc3 7.Bc3 cb4 =.

3.b5 c5

4.a4 e5 5.e3 b6 6.Be2 (better is 6.Qf3 Nc6 7.bc6+– (worse is 7.Qc6 Bd7 8.Qb7 Be6+–)) 6...Bb7 7.Nf3 Bd6 8.0–0 Nf6 9.Na3 e4 (9...Nbd7 10.Nc4 Qc7 11.a5+=) 10.Ng5 (better is 10.Nh4!?+/–) 10...h6= 11.Nh3 Bc8 (11...Qc7 12.Nc4=) 12.Nf4 (12.Nc4 Bh3 13.gh3 0–0+/–) 12...g5? (better is 12...0–0!?=) 13.Nh5+/– Nh5 14.Bh5 0–0 15.Nc4 White prepares the advance a5 15...Be6 (15...Bc7!?+/–) 16.Nd6+– Qd6 17.a5 Nd7 18.ab6 (better is 18.ed4!? cd4 19.d3 ed3 20.Qd3+/–) 18...ab6= 19.Bg4 (19.Ra6 Bc4 20.Be2 Ra6 21.ba6 d3 22.cd3 ed3+/–) 19...Bg4 (19...Ra1!? 20.Ba1 f5+=) 20.Qg4= f5 21.Qh5 Kh7?? (better is 21...Ne5=) 22.Ra8+– Ra8 23.Qf7 Kh8 24.ed4 Rf8?? (24...cd4 25.Qc4 Rd8 26.Qd4 Qd4 27.Bd4 Kg8 28.f3+/–) 25.Qh5 (better is 25.dc5 Nf6 26.Qg6+–) 25...cd4 26.Ra1 Nf6?? (better is 26...Kh7 27.h4 Qg6 28.Qg6 Kg6 29.hg5 d3 30.cd3 hg5 31.de4 fe4+/–) 27.Qh6+– Kg8 28.Qg5 (better is 28.Qg6 Kh8 29.Ra7+–) 28...Kf7 29.Ra7 Ke6 30.Qg3 (better is 30.Ba3 Rg8 31.Qf6 Kf6 32.Bd6 Ke6+–) 30...Qb4?? (30...Qg3 31.fg3 Rc8 32.Bd4 Rc2 33.Bb6 Rd2 34.h3+/–) 31.Qb3 (better is 31.Qc7 Qc5 32.Bd4 Qc7 33.Rc7+–) 31...Qb3 32.cb3 Kd5? (32...Rc8!? 33.g3 d3+/–) 33.h3 (better is 33.Ra4+–) 33...Ne8?? (better is 33...Rd8+–) 34.Rd7 Nd6 (34...Ke6 35.Rd8 d3 36.Bd4+–) 35.Ba3 (better is 35.Rd6 Kc5+–) 35...Rf6 36.Kf1 Ke5 (36...f4 37.Bd6 Rd6 38.Rd6 Kd6 39.g3+–) 37.f4! Kf4 (37...ef3 38.Bd6 Ke6 39.Rd8 fg2 40.Kg2 Rg6 41.Kf2+–) 38.Rd6 (better is 38.Bd6 Kg5 39.Be7 Kg6 40.Bf6 Kf6 41.Rd6 Ke7 42.Rb6 Kd7+–) 38...Rd6 (38...Rf7+–) 39.Bd6 Kg5 40.Bc7 Kf6 41.Bb6 Ke6 42.Bd4 Kd6 43.Bc3 (better is 43.h4 Kd5 44.Bc3 f4+–) 43...Kd7 44.Bb4 Kc8 45.Ke2 Kb7 46.Ke3 Kc8 47.Kf4 Kb7 48.Kf5 Kc8 49.Ke4 Kb7 50.Kf5 Kc8 51.Kf6 Kb7 (51...Kd7 52.h4 Kd8 53.Ke6 Ke8 54.b6 Kd8 55.h5 Kc8 56.b7 Kb8 57.Bc3 Kc7 58.h6 Kb7 59.Kd6 Ka6 60.h7 Kb6 61.h8Q Kb7 62.Bd4 Ka6 63.Qb8 Ka5 64.Qb6) 52.Ke7 Kc8 (52...Kb6 53.Bc3 Kc5 54.Ke6 Kb6 55.h4 Kb7 56.b6 Kc8 57.b7 Kb8 58.Ke7 Ka7 59.h5 Kb6 60.b8Q Kc6 61.d4 Kd5 62.Qb7) 53.Kd6 Kb7 ½–½. ventil (1665) – krawiecus (1675), kurnik, 2014.

4.bc6 Nc6+= (4...bc6 5.c3 Nf6 6.cd4+/–) 5.Nf3 e5 6.e3 Bc5 7.Bb5 Bg4 8.h3 Bf3 9.Qf3 (worse is 9.gf3 Qb6 10.a4 a6 11.Bc6 bc6–/+) 9...Qc7 10.0–0 0–0–0 11.ed4 (better is 11.Qg4!? f5 12.Qf5 Kb8 13.Na3+/–) 11...Nd4= 12.Qg4?? (12.Bd4 Rd4 13.Qg3 g6=) 12...Kb8?? (better is 12...f5 13.Qg5 h6–+ (13...Nb5?! 14.Qf5 Rd7 15.Be5–+)) 13.Qg7 Ne7 14.Qf7?? (14.Bd4!? Bd4 15.c3+=) 14...Nc2?? (better is 14...Nb5 15.Nc3 Nd6–+) 15.Nc3+= Na1 16.Ba1 Rd2 17.Ne4 Rdd8 18.Nc5 Qc5 19.a4 a6 (19...Ng6!?–/+) 20.Be2+= b5 (20...Rhf8 21.Qh7 Rd2 22.Bf3+=) 21.Rb1 Kc7 (better is 21...Rhf8!? 22.Qe6 Rd5 (22...Qf2 23.Kh2 Ng6 24.Qa6 Qe2 25.Rb5 Qb5 26.Qb5 Ka7 27.Bc3+–) 23.ab5 Rf2 24.ba6 Ka8+=) 22.ab5+/– ab5?? (better is 22...Rhf8 23.b6 Kb8+/–) 23.Rb5+– Qc1 24.Kh2 (better is 24.Bf1 Kc6 25.Qe6 Rd6 26.Qe7+–) 24...Qa1?? (better is 24...Qf4 25.Qf4 ef4 26.Bh8 Rh8+/–) 25.Qe7 Rd7 26.Qc5 Kd8 27.Rb8 1–0. chybol3 – cd2, kurnik, 2014.

4.e3 Nd7 5.Bc4 (5.ed4!? cd4 6.Nf3+=) 5...e5 6.ed4 ed4 (6...Nb6 7.Na3 cd4 8.Qe2+=) 7.d3 Be7 8.Ne2 Ngf6 9.0–0 Nb6 10.Bb3 a5 11.a4 Bg4 12.h3 Bh5 13.Nd2 0–0 14.Qe1 Nbd5 15.Ng3 Bg6 16.Nde4 Qc7 17.f4 b6?? (better is 17...Ne4 18.Bd5 Nf6+=) 18.f5+– Ne3 19.fg6 Nf1 (19...hg6 20.Rf3+–) 20.gf7 (20.Nf1?! hg6 21.Nfd2 Ne4 22.Ne4 Kh8+–; 20.Kf1?! hg6 21.Qe2 Bd6 22.Nf6 gf6+–; 20.Qf1?! hg6 21.Re1 Rae8+–) 20...Rf7 21.Bf7 (21.Kf1?! Nd5 22.Kg1 Rd8+–) 21...Kf7 22.Qf1 (worse is 22.Nf1 Nd5+–; worse is 22.Kf1 Nd5+–) 22...Bd6 (22...Qd7 23.Qf3 Rf8 24.Rf1+–) 23.Ng5 (better is 23.Nf6 gf6 24.Nh5+–) 23...Kg6 (23...Kg8 24.Nf5 Re8+–) 24.Qf5 Kh6 25.N3e4 (25.Nf7! Qf7 26.Bc1 Bf4 27.Bf4 g5 28.Qg5) 25...Bh2 (25...g6 26.Qf6 Rf8+–) 26.Kh1 Ne4 27.Ne4 (27.Nf7 Qf7 28.Qf7 Bd6 29.de4 Rf8 30.Bc1 g5 31.Bg5 Kg5 32.Qg7 Kh5 33.g4 Kh4 34.Kg2 Rf2 35.Kf2 Bg3 36.Kg2 Bf4 37.Qf6 Bg5 38.Qf2) 27...g6 28.Qg5 (better is 28.Qf6 Bf4 29.Bc1 Bc1+–) 28...Kg7 29.g3 h6 (29...Bg3 30.Ng3 Rf8+–) 30.Qf6 Kg8 31.Kh2 Rf8 32.Qg6 Qg7 33.Qg7 (better is 33.Qb6!? Rf5+–) 33...Kg7 34.Kg2 Kg6 35.Rf1 Re8 36.Rf6 Kg7 37.Rb6 Re5 38.Rc6 1–0. jura1946 – vilnis51, kurnik, 2014.

4.Nf3 a5 5.a4 b6 6.e3 de3 7.fe3 Bb7 8.Be2 f6 (8...Nf6!?+/–) 9.0–0 Nh6 10.d4 Nd7 11.dc5 (better is 11.Bc4!?+–) 11...Nc5+/– 12.Qe1 Nf7 13.Qh4 h5 (13...e6 14.Qg4+=) 14.Nd4 (14.Rd1!? Qc7 15.Nc3+=) 14...g5+= 15.Qf2 Ne4 16.Qf5 Ned6 17.Qd3 Be4? (better is 17...Qc8+/–) 18.Qb3+– h4 19.Ne6 Qd7 20.Bg4 Nh6?? (20...Qb7 21.Rf2 h3 22.Bh3 Rh4 23.Nf8 Bd5+=) 21.Ng7!!+– Bg7 22.Bd7 Kd7 23.Nd2 Bb7 (23...Bf5 24.Nc4 Nc4 25.Qc4+–) 24.Nc4 Nhf7 (24...Nc4 25.Qc4 Rhd8 26.Rad1 Ke8 27.Qe6+–) 25.Nb6 Ke8 26.Na8 Ba8 27.Rad1 h3 28.g3 g4 29.Qe6 Ng5 (29...Bf3 30.Rf3! gf3 31.b6+–) 30.Qg4 Nde4 (30...Bg2 31.Rf4 Rf8 32.Ba3+–) 31.Qc8 (better is 31.Bf6 Nf6 32.Qg5 Be4 33.Qg7 Rh7+–) 31...Kf7 32.Qc4 Kg6 33.Rd7 Re8 34.b6 Nd2 (34...Nd6 35.Rd6! ed6 36.Qb5 Re3 37.Qf5 Kf7 38.Qg5+–) 35.Qe2 (better is 35.Rd2 Nf3 36.Rf3 Bf3+–) 35...Ndf3 (35...Nf1 36.Kf1 Bg2 37.Kf2+–) 36.Kf2 (36.Rf3 Bf3 37.Qc4 Be4+–) 36...Nh2 (36...Ne4 37.Kf3 Nc3 38.b7 Ne2 39.Ke2 Bf8+–) 37.Ke1 (better is 37.b7 Nf1 38.Qd3 Kh6 39.Rd4+–) 37...Nf1+= 38.Qf1 (38.Kf1 Rh8 39.Ra7 Be4–+) 38...Bg2 39.Qf2 Nf3?? (better is 39...Bc6 40.Rc7 h2 41.Qh2 Nf3 42.Ke2 Nh2 43.Rc6 Rb8+/–) 40.Kd1 Rb8 41.b7 Kf7 (41...Ng5 42.Re7 Bf3 43.Kc1 Rb7 44.Rb7 Bb7 45.g4+–) 42.e4 Ke8 (42...Ng5 43.Qd2 Bf3 44.Kc1 Bg4+–) 43.Rc7 (better is 43.Qa7 Kf7 44.Qb8 Ng5 45.Qd8 Kg6 46.Qe7 Bf3 47.Ke1 Be4 48.Qg7 Kf5 49.Qf6 Kg4 50.Qf4 Kh5 51.Qh4 Kg6 52.Rg7 Kf5 53.Qg5 Ke6 54.Qe5) 43...Kd8 (43...Rd8 44.Kc1 Bh6 45.Kb1 Be3 46.Qe3 h2+–) 44.Rc8! Rc8 45.bc8Q (45.Qb6 Kd7 46.Qb5 Kd8 47.Bc3 Kc7 48.Ba5 Kb8 49.Qa6 Rd8 50.Bd8 h2 51.Qa8) 45...Kc8 46.Qc5 Kd7 47.Qb5 Kd8 48.Qa5 Ke8 49.Qa8?? (better is 49.Qb5 Kf8 50.Qe2+–) 49...Kf7= 50.Qd5 Kf8 51.e5?? (better is 51.Qd8 Kf7 52.Bc3=) 51...h2–+ 52.Qd8 Kf7 53.Qd5 (53.e6 Kg6 54.Qe8 Kh6 55.Bc1 Ng5 56.Bf4 h1Q 57.Kd2–+) 53...Kg6 54.Qe4 (54.Qd3 f5 55.Ke2–+) 54...f5 55.Qh4 Nh4 56.gh4 h1Q 57.Ke2 (57.Kd2 Qh4 58.Ba1 Qf4 59.Kd3 Bf1 60.Kc3 Be5 61.Kb3 Qc4 62.Ka3 Qc5 63.Ka2 Bc4 64.Kb1 Qg1) 57...Qh4 58.Kd3 (58.c4 Bh6 59.Bc1 Bc1 60.Kd3 Qf2 61.Kc3 Qb2 62.Kd3 Qd2) 58...Qe4 (58...Bf1 59.Kd2 Bh6 60.Kd1 Qf2 61.a5 Qd2) 59.Kc3 (59.Kd2 Qf4 60.Kc3 Be5 61.Kb3 Bd5 62.c4 Qc4 63.Ka3 Qc5) 59...Be5 60.Kb3 Bb2 (60...Qb7 61.Kc4 Bf1 62.Kc5 Bd6 63.Kd4 Qe4 64.Kc3 Qe3) 61.Kb2 Qb7 (61...Qa4 62.c4 Qc4 63.Ka3 Qc3 64.Ka2 Bd5 65.Kb1 Qd2 66.Ka1 Qa2) 62.Kc3 Bc6 (62...Qc6 63.Kb2 Qa4 64.c4 Qc4 65.Kb1 Be4 66.Kb2 Qb4 67.Kc1 Qc3 68.Kd1 Bf3) 63.Kd4 Qb4 64.c4 (64.Ke3 Qc3 65.Kf2 Qd2 66.Kf1 Bg2 67.Kg1 Bh3 68.a5 Qg2) 64...Qa4 (64...Be4 65.Ke3 Qe1 66.Kd4 Qd2 67.Kc5 Qa5 68.Kd4 e5 69.Ke3 Qe1) 65.Kc5 (65.Kc3 f4 66.Kb2 Qc4 67.Ka3 f3 68.Kb2 f2 69.Ka3 f1Q 70.Kb2 Qfc1) 65...f4 66.Kd4 (66.Kb6 f3 67.Kc5 f2 68.Kb6 f1Q 69.c5 Qfb5 70.Kc7 Qd4 71.Kc8 Qb7) 66...f3 (66...Qa3 67.c5 Qb3 68.Ke5 Qe3) 67.Ke3 (67.Kd3 f2 68.Kd4 f1Q 69.Ke3 Qac4 70.Kd2 Qfe2) 67...Kg5 68.Kf2 (68.Kd3 f2 69.Ke2 Qc2 70.Kf1 Qd2 71.c5 Qe1) 68...Kf4 0–1. avinoam – kepuc007 (1805), kurnik, 2013.

4.Nf3 b6 5.e3 de3 6.fe3 Bb7 7.Bc4 e6 8.0–0 Nf6 9.Ng5 (better is 9.Na3+/–) 9...Bd6?? (better is 9...Nbd7=) 10.Bf6+– gf6 11.Nf3?? (better is 11.Qh5 Qe7 12.Ne6+–) 11...Nd7+= 12.d4 Qc7 13.d5? (13.Nbd2!?–/+) 13...0–0–0 14.de6 (14.e4 Ne5 15.Nbd2–+) 14...fe6 (14...Ne5 15.Qe2 Nf3 (15...Nc4?! 16.Qc4 Bf3 17.Rf3–+) 16.gf3 Bh2 17.Kh1 Be5–+) 15.Be6 Kb8 16.Nbd2 Nf8 17.Bf5 Ng6 (17...Bf3 18.Rf3 Bh2 19.Kf1–+) 18.e4 (18.Qe2 Ne5+=) 18...Nf4 19.Qe1 Rhg8 20.g3 h5 (20...Nh5 21.e5 Be5 22.Ne5 fe5 23.Rb1+=) 21.Kh1 Nh3?? (better is 21...Ng6+=) 22.Bh3+– h4 23.Nh4 Be5 24.Rb1 Bc3 25.Qe3 (better is 25.Nhf3 Qh7 26.Bf5+–) 25...Bd2+= 26.Qf3 Qe5 Attacking the isolated pawn on e4 27.Bf5 Rh8?? (better is 27...Qd4+=) 28.Ng6+– Qe8 29.Nh8 Qh8 (29...Rd4 30.Bg6 Qh8 31.Rbd1+– (worse is 31.Qf6 Re4 32.Qd6 Ka8 33.Be4 Be4 34.Kg1 Be3 35.Rf2 c4+–)) 30.Rbd1 Qh6 31.Rf2 a6 (31...Rd4 32.Qg4 Bg5 33.h4+–) 32.a4 (better is 32.ba6 Ba6 33.Qg2 Qh5 34.Rdd2 Re8+–) 32...ab5 (32...Rd4 33.ba6 Ba6 34.Qb3+–) 33.ab5 (better is 33.Qg2!? ba4 34.Rfd2 Rd2 35.Qd2 Qd2 36.Rd2 Ba6+–) 33...Rd4 34.Qg4 Be3 (34...Ka7 35.Kg2 Bc3 36.Rd3+–) 35.Rd4 cd4 36.Qg8 Ka7 37.Rf1 Bc1 (37...Bd2 38.Ra1 Ba5 39.Qc4+–) 38.Qf7 (better is 38.Qa2 Kb8 39.Qa1+–) 38...Qh8 (38...Qe3 39.Kg2 Qc3+–) 39.Rc1 Kb8 40.Qe6 (40.Qe7 Be4 41.Be4 Qh2 42.Kh2 Kc8 43.Ra1 d3 44.Ra8) 40...Qh5 41.Qf6 (41.Qd6 Ka7 42.Ra1 Ba6 43.Ra6 Kb7 44.Qb6) 41...d3 (41...Qf3 42.Kg1 Qe3 43.Kg2 Qc1 44.Qb6 Qc2 45.Kh3 d3 46.Qd6 Ka7 47.Qd4 Kb8+–) 42.Qd8 1–0. avinoam – ioaniustin, kurnik, 2013.

4.Nf3 f6 5.c4 (5.e4 e5=) 5...e5 6.Qc2 Be6 7.e3 Nd7 8.Bd3 g6 9.0–0 f5 (9...a6 10.ba6 Ra6 11.Re1=) 10.ed4 ed4 11.Re1 Kf7 12.a4 Bh6 13.Na3 Qc7 (13...Ngf6 14.Rab1=) 14.g3 (14.b6!? Qb6 15.Nb5+=) 14...Ngf6= Black prepares the advance f4 15.Re2 (15.Bf1 Rhe8+=) 15...Rhe8+= 16.Rae1 f4 17.Nh4 Nf8 18.Kg2 Qd7 (18...Kg8 19.Nf3+=) 19.Nf3= Bh3 20.Kg1 Re2 21.Re2 Ng4 (21...Kg8 22.a5+=) 22.Qb3 (22.Bc1 Re8=) 22...Re8 23.Qd1 Re2 24.Qe2 Qe6 25.Be4 (25.Qe4 Qe4 26.Be4 b6+=) 25...Nf6+= 26.Bd3 Qe2 27.Be2 fg3 28.hg3 N8d7 29.a5 b6 (29...g5 30.Nh2–/+) 30.ab6 ab6 31.Nh2? (31.d3 g5+=) 31...Ne5 (better is 31...Bd2 32.Nf3 Bg4–+) 32.Nc2?? (better is 32.f4!? Ned7 33.d3+=) 32...Bd2?? (32...d3 33.Bd3 Nd3 34.Bf6 Kf6 35.f4–+) 33.Nf1? (better is 33.f4!? Ned7 34.Nf3–/+) 33...Ba5 (33...Ne4 34.f4 d3 35.Nd2 Nd2 36.fe5 de2 37.Kf2 Nc4 38.Bc3–+) 34.f4 (34.Nd4 cd4 35.Bd4 Bg4 36.Bg4 Nfg4 (36...Neg4?! 37.f3–+) 37.Be5 Ne5–+) 34...Neg4 (34...d3!? 35.Be5 de2 36.Nfe3–+) 35.Nd2?? (35.Nh2–+) 35...Bd2 (35...Bd2 36.Bf3 d3 37.Bf6 Kf6–+) 0–1. Budrewicz,H – Roczniak,Jan, corr Poland, 1967.

3.c3 e5

4.a3 (--> 1.b4 e5 2.a3 d5 3.Bb2 d4 4.c3).

4.b5 b6 5.Qc2 Bc5 6.Nf3 c6. mic (2175) – orestes (2150), net–chess.com, 2009.

4.b5 Bd6 5.cd4+= ed4 6.Nf3 Bc5 (6...c5 7.bc6 Nc6 8.Nd4+=) 7.a4 (7.Qc2 Nd7+=) 7...Bg4 (7...Nf6!?=) 8.Qc2+/– Qd6? (8...Qd5 9.e4 Qd6+/–) 9.Ba3?? (9.Qe4 Be6 10.Nd4+–) 9...Ba3+= 10.Na3 Bf3 11.ef3 Nd7 12.Qe4 Ne7 13.Nc4 Qb4 14.Qb7 0–0= 15.Bd3?? Nc5–+ 16.Qc7 Nd3 17.Ke2 Rac8 18.Qa7 Qc4 19.Kd1 Nf2 20.Ke1–+ Nh1 21.Rd1 Rfe8 22.d3 Nd5 23.Kd2 Qc3# 0–1. FrutiniMalini – BANZAI, Caissa's Web, 2004.

4.e4 de3 5.fe3 e4 6.d4 =+.

4.e4 Nf6 5.b5 (5.cd4 ed4 (5...Bb4? 6.Qa4 Qd7 7.Qb4+–; 5...Ne4?! 6.Qe2 Qd5 7.Nc3 Nc3 8.dc3=) 6.b5 c5=+) 5...Ne4 (Better is 5...Bc5 6.Bd3 Ng4=+) 6.c4? (6.Qe2!? Nf6 7.Nf3=+) 6...Be6 (Better is 6...Bf5–+) 7.c5? (Better is 7.Qe2 f5 8.d3 Bb4 9.Kd1 Nc3 10.Nc3 dc3 11.Qe5–/+) 7...Bc5 8.Nf3 (8.Qf3 Bd5 9.Bd3–+) 8...Nd7 (9.Bd3 Nd6–+; Better is 8...d3 9.Qa4 Bf2 10.Kd1–+) –+. xadrez – Axel van Dijk, ChessWorld.net, 2003.

4.Nf3 Bd6 5.cd4 Bg4? (Better is 5...e4!? 6.Ne5 Nf6+=) 6.Ne5 (6.de5 Be7+–) 6...Be5 (6...Be6 7.Qa4 Nd7 8.d5+–) 7.de5+– Qe7 (7...Ne7 8.d4+–) 8.h3 (8.Qa4 Bd7 9.b5 f6+–) 8...Bf5 (8...Be6 9.Qa4 c6 10.Nc3+–) 9.Qb3 (9.Nc3!? Nc6+–) 9...Nc6 10.b5 Ne5 11.e3 0–0–0 12.Be2 Bd3+/– 13.Nc3 Be2 14.Ne2 Nd3 15.Kf1 Nb2 16.Qb2+/– Nf6 17.g3 Ne4 18.d4 Qe6 19.Nf4 Qf5 20.g4 Qg5 21.Kg2 g6 22.d5 h5 23.d6 Nd6–/+ 24.b6 cb6 25.Qc3 Kb8–+ 26.Qe5?? Qe5 27.Rac1 Qe4 28.Kg3 hg4 29.h4 Qf3 30.Kh2 Rh4 31.Nh3 Rh3 32.Kg1 Qh1# 0–1. FrutiniMalini – BANZAI, Caissa's Web, 2004.

4.Nf3 f6 5.Qa4 c6 (5...Qd7 6.b5=) 6.cd4 ed4 7.Nd4 b5 8.Qb3 Na6 9.a3 Ne7 10.e3 Bf5 11.Nf5 Nf5 12.Be2 Ne7 13.Bh5 g6 14.Bf6 Nd5 (14...gh5 15.Bh8 Qd5 16.Qd5 Nd5+–) 1–0. Trkn – guest7100, ICC, 2004.

4.Nf3 Nf6 5.e3 (Better is 5.Ne5 dc3 6.Nc3+=) 5...de3–/+ 6.fe3 Bd6 (6...e4 7.Ne5 Qe7 8.Nc4–/+) 7.Be2 (7.c4 e4 8.c5 ef3 9.cd6 fg2 10.Bg2 Qd6 11.Qa4 Nbd7=+) 7...Qe7 (7...e4 8.Nd4–/+) 8.0–0 (8.d3–/+) 8...Bg4 (Better is 8...e4!? 9.Nd4 Qe5–/+) 9.d4 (9.Nh4 Bd7=) 9...ed4=+ 10.Nd4 Be2 11.Qe2=+ Nbd7 12.Nb5 0–0–0 13.Nd6 Qd6=+ 14.Rd1 Qc6 15.b5 Qe4 16.Nd2 Qg6 17.c4 h5 18.Nf3 h4 19.h3 Ne4 20.Bd4 Kb8 21.b6 cb6 22.Ne5 Ne5–/+ 23.Be5 Ka8 24.Rd8 Rd8 25.Bc7 Rc8 26.Bf4 f6 27.Qf3 Nd2 28.Qd5 Ne4 29.a4=+ Nc5 30.a5 ba5 31.Ra5 Nb3?? 32.Rb5+– Nc5 33.Rc5 Rc5 34.Qc5 Qb1 35.Kh2 a6 36.Qc7 g5 37.Qb8# 1–0. FrutiniMalini – BANZAI, Caissa's Web, 2004.

4.cd4 ed4

5.d3?? Nc6 6.a3=+ b5 7.g3 a5 8.ba5 Ra5 9.Bg2 Bb7 10.Qc2 Ra6 11.Nd2?? Nf6 12.Nb3?? Nd5 13.Nc5 Rb6?? 14.Nb7+– Rb7 15.Qc6 Qd7 16.Qb7 Ne7 17.Nf3 g6 18.Bd4 Rg8 19.0–0 Bh6 20.Qb8 Qd8 21.Qd8 Kd8 22.Rfb1 c6 23.a4 ba4 24.Ra4 Nd5 25.Ra8 (25.Ra8 Kc7 26.Be5 Kd7 27.Rg8+–) 1–0. martin78ns – maciekmm, kurnik, 2011.

5.e3 de3 6.de3 (6.Qe2=+) 6...Nc6 7.a3 (7.Qd8!? Nd8 8.a3=) 7...Qd1=+ 8.Kd1 Be6 9.Bb5 (9.Nf3 Rd8 10.Nbd2 Bd5=) 9...Rd8 (9...Nge7 10.Nf3=) 10.Ke2 (better is 10.Nd2 Nge7 11.Ne2=) 10...a6 (better is 10...Nge7!?=) 11.Bc6+/– bc6 12.Nf3 Bc4 13.Ke1 Nf6 (13...Be6 14.Nbd2+/–) 14.Nbd2 Bd5 15.Rc1 (15.Bf6 gf6 16.e4+/–) 15...Bd6 (15...c5 16.Bf6 gf6 17.e4+/–) 16.Nd4 (16.Bf6 gf6 17.e4 Be6+–) 16...0–0 (better is 16...c5!? 17.bc5 Be5+/–) 17.Nc6+– Rd7 (17...Rde8 18.Bf6 gf6 19.Ke2+–) 18.Bf6 gf6 19.f3 (19.Ke2 Re8+–) 19...Kh8 (19...Re8 20.Ke2+/–) 20.e4 (20.g3 Re8 21.Ke2 f5+–) 20...Be6 (20...Re8 21.Nb8 Rb8 22.ed5 Rb5+=) 21.Nd4?? (21.g3 Re8+–) 21...Be5?? (better is 21...Bf4 22.g3 Bd2 23.Kd2 Rd4 24.Ke3 Rfd8–/+) 22.Ne6+/– fe6 23.Nc4 Bd4 24.Na5 Be3 25.Rc2 Rfd8 26.Ke2 Bf4 27.g3 Rd2+= 28.Rd2 Rd2 29.Kf1 Bh6 30.Nc4 Rc2= 31.Na5 Kg7 32.f4 Kg6 33.Nb7 Ra2 34.g4 Bf4–/+ 35.h3 Bc1 36.Nd8 e5 37.Ne6 Ba3–+ 38.Nc7 Bb4 39.Nd5 Bc5 40.Nc3 Rf2 41.Ke1 Rb2 42.Na4? Rb1 43.Ke2 Rh1 44.Nc5 a5 45.Na4 Rh3 46.Kd2 Kg5 47.Kc2 Kg4 48.Kb2 Kf4 49.Nc5 Re3 50.Ka2 Re4 51.Ne4 Ke4 0–1. Cleopatre – rla, internet, 2007.

5.Nf3 Bb4

6.Qa4 Nc6 7.Nd4 +=.

6.Bd4 Nf6 7.Qa4 Nc6 8.Ne5?? (Better is 8.Bc3 Bd6 9.Ne5 Be5 10.Be5=) 8...Bd7 (Better is 8...Qd4 9.Qc2 Bd2 10.Qd2 Qa1 11.Nc6 Qb1 12.Qd1 Qd1 13.Kd1 bc6–+) 9.Qb3 (9.Nc6 Bd2 10.Nd2 Bc6+–) 9...0–0?? (Better is 9...Qe7 10.Nc6 Bc6=) 10.Nd7?? (Better is 10.Nc6 Bc6 11.Qb4+–) 10...Nd4–+ 11.Qb4?? Qd7 12.e3?? Nc6 13.Bb5?? a6 14.Bc6= Qc6 15.0–0 Rad8 16.d4 Ne4 17.Nd2 Nd2 18.Qd2 Qg6 19.Rab1 b6 20.a4 Rd5 21.Rfc1 c5 22.Qa2 Rg5 23.g3 cd4 24.ed4 Rf5 25.Rb2 Qf6 26.Qc4+= b5 27.ab5 ab5 28.Rb5 Rf2 29.Rf1 Rf1–/+ 30.Qf1 Qd4 31.Kg2 Rc8 32.Rf5 f6 33.Qb5 Rc2 34.Kh3 h6 35.Qe8 Kh7 36.Rf4 Qd3 37.Re4?? Qd2 38.Rh4 Qh2 39.Kg4–+ Rc4 40.Kf5 Qf2 41.Rf4 Rf4 42.gf4 Qc2 43.Kg4 Qg2 44.Kf5 Qh3 45.Ke4 Qg2 46.Kf5 Qc2 47.Ke6?? (47…Qe2 48.Kd7 Qe8 49.Ke8–+; 47.Kg4 Qg6 48.Qg6 Kg6 49.f5 Kf7 50.Kf3–+). FrutiniMalini – BANZAI, Caissa's Web, 2004.

6.Bd4 Nf6 7.Nc3 Nc6 8.Bf6 Qf6 9.Qb3 (9.Nd5 Qd6 10.Nb4 Nb4=) 9...a5 (9...0–0 10.a3 Bd6 11.e3=+) 10.a3 Bd6 11.e3 0–0 12.Be2 Ne5 13.Ne4?? Qe7 14.Nd6+= Qd6 15.Nd4 c6 16.0–0 b5 17.Nc2 a4 18.Qb4 c5 19.Qb5?? Bd7 20.Qb2 Rab8 21.Qc3 Bb5 22.Bb5+= Rb5 23.d4 cd4 24.Nd4+/– Rc5 25.Qb4 Nd3 26.Qa4 Rg5 27.Nf3 Rg6 28.Qc4 Ne5 29.Ne5 Qe5 30.a4 Qg5 31.g3 h5 32.h4 Qf6 33.a5 Rg4 34.Qd5 Qh4? 35.Kg2 Qf6 36.Qh5 (36…Qc6 37.Kg1+–; Better is 36.a6!? Rg5 37.Qb7 Rf5+–) 1–0. FrutiniMalini – BANZAI, Caissa's Web, 2004.

6.Nd4 Be7!? =.

6.Nd4 Qf6 7.Qa4 (7.Qc2!? Qb6 8.Ne6 Be6 9.Bg7+–) 7...Nc6+= 8.Nb5?? (Better is 8.e3 Bd7 9.Qb3+=) 8...Qb2–+ (9.Nc7 Kf8 10.Na8 Bf5–+ (< 10...Qa1 11.Qc2–+)) –+. xadrez – Milan van Dijk, ChessWorld.net, 2003.

4.Nf3 dc3

5.Nc3 Bb4 6.Qa4 Nc6+= 7.Ne5 Bc3? (better is 7...Nge7!?+=) 8.Nc6?? (better is 8.Bc3 Nf6 9.Nc6 bc6 10.Qc6 Bd7 11.Qc5+–) 8...Qd2 0–1. Ewert,Jerzy – Roczniak,Jan, corr private, 1993.

5.Nc3 Bb4 6.Ne5 (--> 3.Nf3 e5 4.Ne5 Bb4 5.c3 dc3 6.Nc3).

5.Nc3 Bd6 6.a3 Ne7 7.e3 b6 (7...0–0 8.Nb5 Bg4 9.h3=) 8.Bc4 c6? (8...0–0 9.Ng5 Nf5 10.Qf3 Qg5 11.Qa8+–) 9.0–0 (9.Ng5 Nd5 10.Nf7 Kf7 11.Bd5 Kg6 12.Be4 Kh6+–) 9...Bg4 (9...b5 10.Ba2 Bf5 11.d4+–) 10.Qb3 (better 10.Bf7!? Kf8 11.Bb3+–) 10...0–0+= 11.Ng5 Nd5 (11...Bh5 12.Nce4 Bc7 13.Qc2+=) 12.Nf7 (better 12.f4!? ef4 13.Nf7 (13.Nd5?! Qg5 14.ef4 Qh5+=) 13...Kf7 14.Nd5+– (14.Bd5?! Ke8+–)) 12...Rf7+= 13.Nd5 (better 13.e4+=) 13...Be6?? (better 13...b5 14.Nf6 Qf6 15.Bf7 Qf7 16.Qf7 Kf7=+) 14.Nc3 (better 14.Nb6 Bc4 15.Nc4+–) 14...Bc4+– 15.Qc4 Qe7 16.Ne4 b5 17.Qc2 Qc7? (17...a5 18.Qd3 Bc7 19.Qc3+–) 18.Nd6?? (better 18.Ng5 g6 19.f4+–) 18...Qd6+– 19.d4 ed4 20.Bd4 Nd7 21.Rac1 Nb8 22.Bc5 Qh6 23.Qe4 Nd7 24.Rfd1 (better 24.Bd4 Rc8 25.Ba7+–) 24...Nf6? (24...Qf6 25.f4 Nc5 26.Rc5+– (26.bc5?! Re7 27.Qf3 Rae8+=)) 25.Qd4 (better 25.Qc6 Re8 26.Qb5+–) 25...Rd7 26.Qe5 Re8? (better 26...Nd5+–) 27.Qe8! Ne8 28.Rd7 Qe6 29.Rcd1 Nf6 30.Rd8 Kf7 31.Ba7 Kg6 (31...Qa2 32.R8d3+–) 32.R8d6 Qb3 33.R6d3 Qf7 34.Bd4 Ne4 35.f3 Nd6 (35...Nf6 36.e4+–) 36.Bg7! Kg7 (36...Qg7 37.Rd6 Double attack (37.Rd6 Discovered attack); 36...Kg7 37.Rd6 Discovered attack) 37.Rd6 Qc4 (37...Qb3 38.Rd7 Kf8 39.R1d3+–) 38.R6d3 (better 38.Rd7!? Kf8 39.Rh7 Ke8+–) 38...h5 39.h3 Kg6 40.Kh2 Kg5 (40...h4+–) 41.Rd6 Kf5 (41...Qc3 42.Re6 Kf5 43.Rdd6+–) 42.Rh6 Kg5 (42...Qc3 43.Rdd6 Qe5 44.f4 Qd6 45.Rd6 Ke4+–) 43.Rdd6 Qc3 44.Rhg6 Kf5 45.Rdf6! Ke5 (45...Qf6 46.e4 Double attack (46.e4 Decoy)) 46.Rc6 Qa3 1–0. moss42 (2275) – KMiroslav (1905), ChessWorld.net, 2013.

3.c4 (c3) dc3

4.dc3 Qd1=+ 5.Kd1 Bg4 6.Nf3 Bf3 7.ef3 Nc6 8.Kc2 Nb4?? 9.cb4+– c6 10.Nc3 b5?! 11.a3 a5 12.Be2 1–0. Fournier,Frederic (1785) – artil (1700), Active blind, 2011.

4.Bc3 e5 5.Qa4 Nc6 6.b5 Nd4 7.e3 Nf5 8.Be5+/– Qd7 9.Bc3 Nd6 10.Nf3 Qb5?? 11.Bb5+– (11.Bb5 Nb5 12.Qb5 c6 13.Qb3+–) 1–0. martin78ns – cieniak111, kurnik, 2011.

4.Bc3 e6 5.Nf3 Nf6. ramoschessbrasil (2170) – pwillows (2045), net–chess.com, 2011.

4.Bc3 f6 5.e3 Bf5 6.d4 Qd5 7.Nf3 a6 8.Be2 Bg4 9.0–0 c6 10.Nbd2+/– Nh6 11.Bc4 Qd8 12.Qb3 Nd7 13.h3 Bf3 14.Nf3 Nb6 15.Be6 Nd5 16.Bb2 Qd6+= 17.Bd5 cd5 18.Rac1 e6 19.a3 Be7 20.Rc2 0–0 21.Rfc1 Nf5 22.Rc7 Rab8 23.g4 Nh6 24.Qa4+= Bd8 25.Rd7 Qb6 26.Kg2 Qb5 27.Qb5+/– ab5 28.Nd2 Nf7 29.Rc5 Bb6? 30.Rb5+– Ba7? 31.Rbb7 Rb7 32.Rb7 Bb8 33.Re7 Nd6 34.a4 Nc4 35.Nc4 dc4 36.Re6 Rc8 37.Bc3 Ba7 38.b5 Rb8 39.Rc6 Ra8 40.Ra6 1–0. Wall,Bill – Surtse, internet, 2002.

4.Nc3 e6 5.Qa4 Bd7 6.b5 Nf6 7.h3 Be7 8.e3 (better is 8.e4=) 8...Nd5 (better is 8...0–0!?=) 9.Nd5+/– ed5 10.Bg7 Rg8 11.Bd4 (11.Be5 c5+/–) 11...c5+= 12.bc6 Nc6 13.Qd1 (13.Bc3 Bf6 14.Bf6 Qf6+/–) 13...Nb4 (13...Nd4!? 14.ed4 Bd6=) 14.Qb3 (14.Bc3 d4 15.Bd4+/–) 14...a5? (better is 14...Bf5!? 15.Rc1 Rc8+=) 15.a3+– Nc6 16.Nf3 (16.Bb6 Qc8+–) 16...Nd4+/– 17.Nd4 (worse is 17.ed4 Bc6+=) 17...Bf6 (17...Bc8!?+/–) 18.Qd5+– Bd4 19.Qd4 (19.ed4?! Qe7 20.Qe5 Rd8+/–) 19...Rc8 (19...Qe7 20.Qd3 Rg7 21.Qc3+–) 20.Be2 (20.Qe4!? Be6+–) 20...b5 (20...Bc6 21.Qe5 Kf8 22.Bf3+–) 21.Rb1 a4 (21...Bc6 22.Qe5 Qe7 23.Qf5+–) 22.0–0 (22.Qe4 Kf8+–) 22...Bc6 23.Qd8 (23.Qe5 Qe7 24.Qe7 Ke7+–) 23...Rd8 24.f3 (better is 24.g3 Rd2 25.Bb5+–) 24...Rd2+/– 25.Bb5?? (better is 25.Rf2 Rd5 26.Bf1+/–) 25...Bb5 (25...Rgg2 26.Kh1 Rh2 27.Kg1 Rdg2) 26.Rb5?? (better is 26.Rf2 Rf2 27.Kf2–/+) 26...Rgg2 (26...Rgg2 27.Kh1 Rh2 28.Kg1 Rdg2) 0–1. overtoom – raven_king, gameknot.com, 2013.

4.Nc3 e5

5.Qb3 f6 (5...Nc6 6.Nf3=+) 6.e3= Nh6 (6...Nc6 7.a3=) 7.Be2 (7.Nf3 Bg4=) 7...Qd6 8.Bh5 g6 9.Bf3 Be6 (9...c6 10.b5=) 10.Qa4 (10.Nb5 Bb3 11.Nd6 Bd6 12.Bb7 Bd5 13.Bd5 c6+–) 10...Bd7 11.Qb3 Be6 (11...Qb4? 12.Bb7 Qb3 13.ab3+–) 12.Qa4 c6 (12...Bd7 13.b5 c6 14.d4=) 13.b5 (13.Ne4 Qd8+=) 13...Be7 (13...Nf5 14.Ne4 Qd8 15.bc6 bc6 16.g4+=) 14.bc6 (14.d4 ed4 15.Qd4 Nf5=) 14...Nc6 15.Ne4 (15.Rd1 Nf5=) 15...Qd7 (15...Qb4 16.Qc2=+) 16.Ne2 (16.Rd1!?=) 16...f5 17.N4c3 (17.N4g3 Nb4 18.Qd7 Kd7–/+) 17...e4 18.Ne4 fe4 19.Be4 (19.Qe4 0–0 20.Nf4 Bf7–/+) 19...0–0 20.Qb3?? (better 20.Nd4 Bh4 21.0–0–/+) 20...Bb3–+ 21.ab3 Rae8 (better 21...Qe6 22.Nc3 Rad8 23.Ba3–+) 22.Bc2 (22.Nc3 Bf6 23.d4 Nd4 24.ed4 Qd4–+) 22...Bf6 (better 22...Rf2 23.Kf2 Qd2 24.Ra4 Qc2 25.Rc1 Qb2 26.Rc3–+) 23.b4 (23.Bf6 Rf6 24.Ra4–+) 23...Bb2 24.Bb3 Kg7 25.Rb1 Nb4 26.Nd4 Nc6 (26...Nd3 27.Ke2 Qd4 28.f3 Ng4 29.Ba2 Nf4 30.Ke1 Qd3 31.Kd1 Ne3 32.Ke1 Qe2) 27.Rb2 (27.Ne6 Re6 28.Be6 Qe6 29.Rb2 Qc4 30.Rb7 Kg8–+) 27...Nd4 (better 27...Qd4 28.Ra2 Qd3 29.Bd1–+) 28.d3 b6 (better 28...Nb3 29.0–0 Qd3 30.h3–+) 29.0–0 Nb3 30.Rc1 a6 (better 30...Nc1 31.h3 Qd3 32.Kh2–+) 31.Rc7 a5 (31...Qc7 32.h3 Qc1 33.Kh2 Qb2 34.g3 Qf2 35.Kh1 Qf1 36.Kh2 Rf2) 32.Rd7 Kg8 (32...Rf7 33.Rf7 Nf7 34.Rb3–+) 33.Rb3 Re7?? (better 33...Ng4 34.h3 Ne5–+) 34.Rb6 (better 34.Re7 Rc8 35.g3+–) 34...Rd7–+ 35.Re6 (35.d4 Rc7 36.f4 Ng4–+) 35...Rdd8 (35...Rd3 36.h3–+) 36.Re7 (36.d4 Rc8 37.h3 Rc1 38.Kh2 Rf2–+) 36...Rfe8 (better 36...Rd3 37.h3 Rd1 38.Kh2 Rf2 39.Re8 Kf7–+) 37.Rg7 (37.Ra7–+) 37...Kg7 38.f3 Kf7 (38...a4!? 39.e4–+) 39.Kf2 Rb8 (39...a4 40.g4–+) 40.Kg3 a4 41.h4 a3 42.h5 a2 43.hg6 Kg6 44.f4 (44.Kh2 a1Q 45.e4 Qe5 46.Kh3 Rb1 47.f4 Qf4 48.g3 Qf1 49.Kh4 Qh1) 44...a1Q (44...Re3 45.Kh4 Nf5 46.Kg4 h5) 45.f5 (45.e4 Re4! 46.Kh2 Ng4 47.Kg3 Re3 48.Kg4 h5 49.Kh4 Qf6) 45...Kf5 (45...Nf5 46.Kh2 Qe5 47.g3 Qg3 48.Kh1 Rb1) 46.e4 Ke5 (46...Ke5 47.d4 Qd4 48.Kh3 Qe3 49.g3 Rg8 50.Kg2 Rg3 51.Kh2 Qg1; 46...Kg5 47.Kf3 Rf8 48.Kg3 Qh1 49.d4 Qh4) 0–1. Agiant (1650) – opalko (1640), lichess.org, 2020.

5.b5 f6 6.e4 Be6 7.Nf3 Bc5 8.Be2 a6 9.a4 ab5 10.ab5 Ra1 11.Qa1 Ne7 12.0–0 Nd7 13.Ba3 b6 14.Rd1 0–0 15.Bc5 bc5= 16.Qa6 Nb6 17.Na4 Qd6=+ 18.Nb6 cb6 19.Qa3 Rd8 20.h3 Ng6=+ 21.Kh2 Nf4–/+ 22.Qe3 Ne2 23.Qe2 Qd3 24.Qd3 Rd3 25.Ra1 Rd6 26.Ra8 Kf7 27.Ra1 g5 28.g4 Kg6 29.Kg3 h5 30.Rb1? h4–+ 31.Kg2 Bc4 32.Rb2 Bd3 33.Ne1 Be4 (34.f3 Bd5–+) 0–1. Wantoch_Rekowski,Jacek – Roczniak,Jan, corr Poland, 1993.

5.b5 Nf6 6.e4 Bc5=+ 7.h3 Qd4–/+ 8.Qe2 Ne4! 9.Nd1 Qd5 10.d3?? Bb4–+ (11.Nc3 Bc3 12.Kd1 Qb5 13.de4 Qb2 14.Qb2 Bb2–+) 0–1. Wantoch_Rekowski,Jacek – Roczniak,Jan, corr Poland, 1993.

5.b5 Nf6 6.Nf3 Nbd7 7.d4 =.

5.Nf3 Nd7 6.Qa4 =.

5.Nf3 f6 6.a3 Bd7 7.d4+= ed4 8.Nd4 Nc6 9.e3 Nd4 10.Qd4 Bf5 11.Qc4 Qd7 12.Rd1+/– Bd6 13.Ne4 Be6 14.Qc1 a6 15.Be2 Nh6 16.Bf6! Nf5 17.Bh5+– Kf8 18.Nc5 Qc8 19.e4 gf6 20.ef5 Bf7 21.Qh6 Ke7?? 22.0–0 Qf5 23.Rfe1 Be5 24.Bf7 Raf8 25.Qh5 Qc8 26.Ba2 (26...Qe6 27.Be6 Bh2 28.Kh2 f5 29.Rd7 Kf6 30.Qf5) 1–0. Ewert,Jerzy – Roczniak,Jan, corr 2. AMM Poland, 1993.

3.c4 e5=+

4.b5 (--> 1.b4 e5 2.b5 d5 3.Bb2 d4 4.c4).

4.Nf3 Nd7 5.d3 Bb4–+ 6.Nbd2 Ngf6 7.g3 b6 8.Bg2–/+ Bb7 9.0–0 0–0 10.Ne5? Bg2–+ 11.Nd7 Bf1 12.Nf6 Qf6 13.Kf1 Bd6 14.Nf3 c5 15.Bc1 h6 16.h4 a6 17.Kg2 b5 18.cb5 ab5 19.Qd2 Qe6 20.a3 Be7 21.Qb2 Qd7 22.Bf4 Rfe8 23.Rb1 c4 24.Qb5 Qb5 25.Rb5 cd3 26.ed3 Ra3 27.Nd4 Rd3 28.Nf5 Bf6 29.h5 g6 30.hg6 fg6 31.Nh6 Kg7 32.Ng4 Re7?? 33.Nf6+/– Kf6 34.Bg5 Kf7 35.Be7 Ke7 36.f4 Rd6 37.Kf3 (37...Rd3 38.Kf2+/–) 1–0. gtate (1965) – ghorn (2040), net–chess.com, 2006.

4.g3 Bb4 5.Bg2 Nf6?? 6.Nf3?? Nc6 7.0–0? 0–0–+ 8.e3 Bg4 9.Qb3 Bf3 10.Bf3–/+ e4 11.Bg2 a5 12.a3 Bc5 13.Qb7 Qd7 14.Qb3 Rab8 15.Qa4?? Rb2–+ (16.Kh1 Ne5 17.Qa5 Qc6–+) 0–1. gtate (1955) – wmalone (2070), net–chess.com, 2006.

4.Nf3 f6

5.b5 Ne7 6.e3 de3 7.fe3 Ng6 (7...Nf5 8.Be2=) 8.d4 e4 9.Nfd2 f5 10.g3 Be6 11.Bh3 Nd7 (better 11...Qg5!? 12.Qe2 Qh6 13.Ne4 Ne5 (13...Qh3? 14.Ng5 Bb4 15.Bc3+–) 14.de5 Qh3+=) 12.0–0+– Nb6 13.d5 Bd7 (13...Nd5 14.cd5 Qd5 15.Nc3+–) 14.Bf5 Bf5 15.Rf5 Bd6 16.Bg7 Rg8? (better 16...Qd7 17.Bh8 Qf5+–) 17.Bd4 Qe7 18.Qc2 White plans c5 18...0–0–0 (18...Be5 19.c5 Bd4 20.ed4+–) 19.c5 (19.Qe4?! Qe4 20.Ne4 Nc4+–; 19.Ne4?! Nc4 20.Rf6 Nf8+–) 19...Nd7 (19...Bg3 20.hg3 Nh4+–) 20.cd6 Qd6 21.Ne4 Qe7 (21...Qb4 22.d6 c6 23.bc6 Qe1 24.Kg2 b6 25.cd7 Kb8 26.Qc7 Ka8 27.Qc6 Kb8 28.Bb6 Qe2 29.Nf2 Rd7 30.Bc7 Rc7 31.dc7 Kc8 32.Qa8 Kd7 33.Rd5 Ke7 34.Qd8 Rd8 35.cd8Q Kf7 36.Rd7 Ke6 37.Rd6 Kf7 38.Qf6 Kg8 39.Rd8 Nf8 40.Rf8) 22.Nbd2 (22.d6 Ndf8 23.de7 Ne7+–) 22...Rgf8 (22...Kb8 23.Rc1 Rc8 24.Nc5+–) 23.Rf8 (better 23.d6 Nb6 24.de7 Ne7 25.Rf8 Rf8 26.Qc5+–) 23...Rf8 (23...Ndf8 24.Bf6 Qd7 25.Bd8 Qd8 26.d6+–) 24.Rc1 (24.Rc1 Kb8 25.Qc7 Ka8 26.Rc4+–) 1–0. AvImd (1745) – gregory02011972 (1810), lichess.org, 2020.

5.c5 a5 =+.

3.d3 c5

4.Nf3 cb4 5.Bd4 Nc6 6.Be3 (6.Bb2 Nf6=) 6...e5 7.c4 Nf6 8.Qb3 (8.Nbd2 Be7 9.Bg5 0–0=+) 8...Be7 (8...Ng4 9.Bg5 f6 10.Bd2–/+) 9.Qb2 (9.Bg5!?=+) 9...Ng4 –/+. xadrez – Alissa, ChessWorld.net, 2003.

4.bc5 e5

5.Nf3 Nc6 6.Ba3 Bc5 7.Bc5 Qa5 8.Nbd2 Qc5 (9.c4 Qa5=+) =+. Milan van Dijk – Alissa, ChessWorld.net, 2003.

5.Nf3 Nc6 6.c3 Bc5 7.Qa4 Bd7 =+.

5.Nf3 Nc6 6.c3 Bc5 7.Qd2 Nge7 8.e4 (8.Ba3 Ba3 9.Na3 Bg4=+) 8...Ng6 (8...f6 9.Be2–/+) 9.Be2 (9.cd4!? ed4 10.Ba3=+) 9...Nf4–/+ 10.0–0 dc3 11.Bc3 Bg4 12.h3 Ne2 –/+. Axel van Dijk – Alissa, ChessWorld.net, 2003.

5.Nf3 Nc6 6.c3 Bc5 7.Nbd2 Nf6 =+.

3.d3 e5

4.a3 (--> 1.b4 e5 2.a3 d5 3.Bb2 d4 4.d3).

4.a3 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.d3 d4).

4.b5 (--> 1.b4 e5 2.b5 d5 3.Bb2 d4 4.d3).

4.c3 Qd5 =.

4.c4? Bb4–+ 5.Nd2 Nc6 6.e3 de3 7.fe3 Nf6 8.a3 Ba5 9.Ne2? (better is 9.Ngf3 Qe7 10.Qe2–+) 9...Qd3 10.Ra2 (10.Nc3 Qe3 11.Qe2 Ng4–+ (11...Bc3?! 12.Qe3 Bb2 13.Ra2+=)) 10...Qc4 (better is 10...Qe3 11.Bc3 Bc3 12.Qc1–+) 11.Nc1 (11.Nc3 Qc5 12.Qc2–+) 11...Qh4 12.g3 Qe4 13.Rg1 (13.Qe2 Qh1 14.Qg2 Qg2 15.Bg2–+) 13...Qe3 14.Qe2 Bd2 15.Kd1 Qg1 (better is 15...Bg4 16.Rg2 Bc1 17.Bc1 Rd8 18.Rd2 Rd2 19.Bd2 Qa3 20.Bc1–+) 16.Qd2 Qf1 17.Kc2 Bf5 18.Nd3 e4 (18...Rd8 19.Qd1 Qf2 20.Kc1 Rd3 21.Ba1 Qc5 22.Qc2 Qe3 23.Qd2 Qg1 24.Kc2 Qb1 25.Kb1 Rb3 26.Kc1 Rb1) 19.Bf6 gf6 20.Kc3 0–0–0 21.Rb2 Rd3 22.Kc4 Rd2 (22...Rd4 23.Kb3 Qc4) 23.Kc5 Qc1 0–1. jmcauley (1800) – ctrotter (2405), net–chess.com, 2013.

4.Qd2 c5 5.Nf3 cb4 6.Ne5 f6 7.Nf3 Nc6 8.e3 Bc5 9.ed4 Bd4 10.c3 bc3= 11.Nc3 Nge7 12.Be2 0–0 13.0–0 Be6 14.Rfe1 Bb6 15.d4 Nd5 16.Bc4+= Bf7 17.Ba3 Nc3 18.Bf8 Ne2? 19.Qe2+– Qf8 20.Qe4?? Bc4–/+ 21.d5 Na5 22.a3? Qc5 23.Red1 Qf2 24.Kh1 Bb5 25.d6 Bc6 26.Rd2?? Be4 27.Rf2 Bf2 28.d7 Bb6 0–1. Tiedemann,Joern (2125) – Baer,Cy (1895), RSS4D basic–16, 2008.

4.Nd2? b5 5.a3 c5 6.c3 Nf6 7.cd4 cd4 8.Ngf3 Nc6 9.g3 a5 10.Bg2 Bb7 11.ba5 Ra5 12.0–0 Bd6 13.Nb3 Ra8 14.Nbd2 0–0 15.Bh3 Bc8 16.Bg2 Bb7 17.Ng5 Rb8 18.Nge4 Ne4 19.Ne4 f5 20.Nd6 Qd6 21.Qb3 Kh8 22.Qb5? Rf7?? 23.Rfc1 Na7 (23...Na7 24.Qb4 Qd8+=) 0–1. keeder – diggerdogwoofwoof, ChessWorld.net, 2011.

4.e3? a6 5.Nf3 Nc6 6.a3 h6 7.Be2 b5 8.ed4 ed4 9.c4 bc4 10.dc4 Be7 11.Nd4 Nd4 12.Qd4 Qd4 13.Bd4 f6? (better is 13...Bf6 14.Bf6 Nf6+/–) 14.Nc3 c6 15.0–0 Bd6 16.Bf3 Bd7 (16...Ne7 17.Rad1 Kf7 18.Bf6 Bh2 19.Kh2 Kf6 20.Rd6 Kf7 21.Bc6 Nc6 22.Rc6+–) 17.Ne4 Be7 18.Bh5 Kd8 19.Rad1 Bf8 (19...Kc7 20.Bb6!! Kc8 21.Rfe1+–) 20.Bc5 (better is 20.Rfe1 f5 21.Nc5 Bc5 22.Bg7 Rh7 23.Re8 Kc7 24.Ra8 Rg7 25.bc5 Nf6+–) 20...Bc5 (20...Kc7+–) 21.Nc5 Ra7 22.Bg4 f5 23.Bf5 Nf6 24.Ne6 (better is 24.Rd7 Nd7 25.Rd1 Ke7 26.Bd7 Rc7+–) 24...Ke7 25.Ng7 Kf7 26.Bd7 Nd7 (26...Rd7 27.Nf5+–) 27.Nf5 h5 28.Rd6 Rc7 29.Rfd1 Rd8 (29...Nb6 30.R6d4 Kf6+–) 30.g3 (30.Nh6 Kg7 31.Re1 Ra8 32.Re7 Kf8+–) 30...Kg8 (30...Rb7 31.Rc6 Ra7 32.Nh6 Kg7 33.Rcd6+–) 31.Nd4 (better is 31.Re1 Rf8 32.Nh6 Kh8+–) 31...Kf7 (31...Re8 32.Rc6 Rc6 33.Nc6 Nf6+–) 32.Ne6 Rcc8 33.Nd8 Rd8 34.Rd7 Rd7 35.Rd7 Ke6 1–0. phildo (1885) – forwardmarch, gameknot.com, 2013.

4.e3? de3!? 5.fe3 Bb4 6.Nd2 Nc6 –/+.

4.e4 Bb4–+ 5.c3 dc3 6.Nc3 Nf6 7.Nf3 Qe7 8.d4?? (Better is 8.Be2–/+) 8...Ne4–+ 9.de5 (9.Bc4 Nc3 10.Qc2 ed4 11.Kf1 c5–+) 9...Nc3 10.Qc2 Ne4 (11.Ke2 Bf5–+) –+. xadrez – marekt, ChessWorld.net, 2003.

4.Nf3 Nc6 5.b5+= Na5 (5...Nce7 6.c3+=) 6.Ne5 (6.c3 dc3 7.Bc3 e4+/–) 6...Bd6 (Better is 6...a6+=) 7.Bd4?? (Better is 7.Nf3+/–) 7...Be5?? (Better is 7...Bb4 8.Bc3 Bc3 9.Nc3 Qd4–/+) 8.Be5+– Ne7 9.Bg7 +–. Axel van Dijk – xadrez, ChessWorld.net, 2003.

4.Nf3 Qd6 5.c3 Bg4 (5...dc3 6.Bc3 Nc6 7.Nbd2+=) 6.Nbd2 (Better is 6.cd4 Bf3 7.de5+=) 6...c5? (6...dc3 7.Bc3 Bf3 8.Nf3+=) 7.Ne4 (7.bc5!? Qc5 8.cd4 ed4 9.Bd4+/–) 7...Qd5+= 8.Nc5 Bc5 9.h3?? (Better is 9.bc5 Nc6 10.Qb3 Bf3 11.gf3 (< 11.ef3 Qc5 12.Rc1 Qe7=) 11...Qc5 12.Rg1+= (12.Qb7?? Rb8 13.Qa6 Rb2 14.Qc8 Ke7–+)) 9...Bf3 10.gf3 dc3 11.Bc3 Bd4 12.Bd4 Qd4 (13.Rb1 Ne7–+) –+. Axel van Dijk – Jan van Dijk, ChessWorld.net, 2003.

4.c3 dc3

5.Bc3 Nc6 6.Nf3 Bb4 7.Bb4 Nb4 8.Ne5?? (Better is 8.Qa4 Nc6 9.Ne5=) 8...Qd4–+ 9.Qa4 c6 10.Qb3 (10.Nc4 a5 11.Qb3 Qa1 12.a3–+) 10...Qe5 11.Nc3 Nd3 12.Kd2 Nf2 13.Rg1 Be6 14.Qb7 Rd8 15.Ke1 Nd3 16.Kd2 Nb4 17.Ke1 Nc2 –+. Axel van Dijk – anizan dolivia, ChessWorld.net, 2003.

5.Bc3 Nc6 6.Nf3 Be6 7.b5 Nd4 8.Nbd2 Nb5 9.Be5= Qd5 10.a4 Nd6 11.Rc1 0–0–0 12.e4 Qa5 13.Bc3 Qb6 14.d4 a6 15.a5 Qa7 16.d5 Bd7 17.Bd4 Qa8 18.Ne5 f6? 19.Qc2 Qb8 20.Ba7 (20.Ba7 Ba4 21.Nb3 (21.Qa4?! Qa7 22.Qc2 Qb8+/–) 21...Ne4 22.Bb8 (22.Qe4?! Qa7 23.Qc4 b5 24.ab6 Qb6 25.Qa6 Kb8 26.Qa4 Qb4 27.Qb4 Bb4 28.Nd2 fe5+=) 22...Bb4 23.Ke2 Nc3 24.Qc3 Bc3 25.Bc7+–; 20.Nd7?! Rd7 21.Bd3 Qa8+–) 1–0. pierre – tisteng, internet, 2011.

5.Bc3 Be6 6.Nd2 c5 7.bc5 Bc5 8.Ngf3 Qc7?? 9.Be5+– Qa5 10.Bg7 Bb4 11.Bh8 Bd2 12.Qd2 Qd2 13.Kd2 1–0. Stanley – Leo, private, 2011.

5.Bc3 Ne7 6.Nf3 =.

4.c3 c5

5.Nf3 Nc6 6.b5+/– Nb8 7.Ne5 Qf6? 8.cd4+– Bd6 9.Nc4 cd4 10.Nbd2 a6 11.Nb6 Ra7 12.Nc8 (12.Nc8 Ra8 13.Qa4+–) 1–0. happy – calle, internet, 2011.

5.Nf3 f6 6.bc5 Bc5 7.cd4 ed4 8.Nbd2 Nc6 9.Rc1 Bb6 10.Qa4 Bd7 11.Ne4 Ne5 12.Nd6 Ke7 13.Qa3+– Nf3 14.gf3 Ke6 15.Bh3 Kd5 16.e4 Ke5 17.Nf7 (17.Nf7 Kf4 18.Qd6 Kf3 19.Qg3) 1–0. pierre – uggly, internet, 2011.

4.c3 Nc6

5.b5+/– Na5 6.Nf3 Bd7 7.Ne5 Bb5 8.cd4 Bb4 9.Nd2 Nc6 10.Qb3 Bd2 11.Kd2 Qg5 12.e3 Ne5 13.Qb5 Nd7 14.Qg5 (14.Qg5 Ngf6 15.Rc1+–) 1–0. Anonymous – esser, internet, 2011.

5.b5 dc3 6.Nc3 Nd4 +=.

5.b5 Nce7 =+.

5.Nf3 Qd5 +=.

5.Nf3 Bg4 6.cd4?? (better is 6.b5!? Bf3 7.gf3 (worse is 7.ef3 dc3 8.Nc3 Nd4=) 7...dc3 8.Nc3+=) 6...Bf3 (better is 6...Bb4 7.Nbd2 ed4–/+) 7.de5?? (better is 7.b5 Nd4 8.gf3=) 7...Bh5 (7...Bb4 8.Bc3 Qd4 9.Qd2–+) 8.f3? (8.b5 Nd4 9.Qa4 Bb4 10.Bc3 Bc3 11.Nc3 Nh6–/+) 8...Nb4 (8...Bb4 9.Nd2 Qg5 10.Qc1 Ne5 11.a3–+) 9.g4? (9.Nc3 Ne7–+) 9...Bg6 (9...Qh4 10.Kd2 Bg6 11.Qa4 Nc6 12.Qf4–+) 10.a3? (10.h4 h5 11.a3–+) 10...Bc5 (better is 10...Qh4 11.Kd2 Nc6 12.Qe1 Qg5 13.Kd1–+) 11.Bc3?? (better is 11.ab4 Qh4 12.Kd2 Bb4 13.Bc3 Bc3 14.Nc3= (worse is 14.Kc3 Ne7–/+)) 11...Nd5 (better is 11...Qh4 12.Kd2 Nc6–+) 12.d4 (12.h4 h5 13.Qb3 Nc3 14.Nc3–+) 12...Bb1 (better is 12...Qh4 13.Kd2 Qh6 14.Ke1–+) 13.Rb1 (13.Qa4 c6 14.dc5 Nc3 15.Qb4 Qh4 16.Kd2 0–0–0 17.Kc3 Qe1 18.Kc4 Bd3 19.ed3 Qa1 20.Kb3–+) 13...Nc3 14.Qd3 Qd4 15.Qd4 Bd4 16.Rb7 Be5 (16...Be3 17.Rb3 Rd8 18.Rc3 Bd2 19.Kf2 Bc3 20.f4–+) 17.Bg2 (17.e4 0–0–0 18.Ba6 Rd6 19.Rb6 Kd7 20.Rd6 Kd6–+) 17...Ne7 18.0–0 (18.f4 Bd4 19.Kd2 0–0–0–+) 18...Ne2 19.Kh1 Nf4 20.Rb5 Bd6 21.Rg5 (21.Rd1 Ba3 22.Ra1 Bd6–+) 21...Ng2 (better is 21...Ned5!? 22.Re1 Kf8 23.Kg1–+) 22.Kg2 g6 23.f4 (23.Ra5 Kd7–+) 23...Rb8 (better is 23...f5 24.gf5 Nf5–+) 24.f5 (24.Ra5–+) 24...h6 25.f6 hg5 26.fe7 Rh2 27.Kg1 (27.Kf3 Rb3 28.Ke4 Rd2 29.Rf2 Rf2 30.Kd5 Rf4 31.a4 Rc3 32.a5 Rc5) 27...Rbb2 28.a4 (28.Rc1 Rhg2 29.Kf1 Bh2 30.Rc2 Rgc2 31.Ke1 Rb1) 28...Rbg2 0–1. nimzou (1700) – presort (2005), net–chess.com, 2014.

4.c3 Nf6

5.Nf3 a5 6.Qa4+= Bd7 7.b5 Na6 8.Ne5+/– Nc5 9.Qc4 Be6 10.Qd4 Qd4 11.cd4 Na4 12.Ba3 Ba3 13.Na3 1–0. marcosramos – yetzaline (2160), net–chess.com, 2007.

5.Nf3 dc3 6.Bc3 Nd5 7.Be5 Bb4 8.Nbd2 =.

5.Nf3 dc3 6.Bc3 Nd5 7.Ne5? Nc3–+ 8.Nc3 Qd4 (8...Bb4?! 9.Rc1 0–0 10.Qb3=+) 9.Nb5?? (9.Rc1 Qe5 10.d4–+) 9...Bb4 10.Qd2 (10.Nc3 Qc3 11.Qd2 Qd2) 10…Qa1 0–1. Axel van Dijk – marekt, ChessWorld.net, 2003.

5.Nf3 dc3 6.Bc3 e4 7.Ne5 Be6 8.d4 Nbd7 9.Nd7 Qd7 10.e3 b5 11.Na3? c6 12.Be2 Nd5 13.Qc2 f5 14.0–0 g6 15.f4? Ne3 16.Qb2 Nd5 17.Nb1? Bg7 18.Rd1 0–0 19.a4 a6 20.g3 Bh6 21.Bd2 e3 22.Bc1 Qe7 23.Bf3 Nb4 24.Be3 Bg7 25.Nc3–/+ Nd5 26.Bf2 b4 27.Nd5 cd5 28.Re1 Qd6 29.a5 Rfc8 30.Rac1 Kf7 31.Qb3 h5?? 32.Rc5+= Rab8?? 33.Bd5+– Re8 34.Re6 Re6 35.Be6 Qe6 36.Rc7 Kf6 37.d5 Qe4 38.Qb2 (38.Qb2 Qd4 39.Bd4) 1–0. Decking,Lutz (2195) – Baer,Cy (1895), RSS4D easy–38, 2007.

4.Nf3 Bb4!?

5.c3 dc3 6.Bc3 Bc3 7.Nc3 Nc6 8.e3 (8.Qa4 Bd7=+) 8...Nf6–/+ 9.d4 ed4 10.ed4 Bf5 (10...0–0!? 11.Be2 Re8–/+) 11.Qe2 (Better is 11.Bb5!? 0–0 12.Bc6 bc6 13.0–0=+) 11…Ne4?? (12.Ne4 0–0+=; Better is 11...Be6–+) +=. Axel van Dijk – Milan van Dijk, ChessWorld.net, 2003.

5.c3 dc3 6.Bc3 Bc3 7.Nc3 f6 8.e4 c6 9.d4 Bg4 10.de5 Qd1 11.Rd1 Bf3 12.gf3 fe5 13.Bh3 Ne7–/+ 14.Ke2 0–0 15.Rd7?? Nd7–+ 16.Bd7 Ng6 17.Be6 Kh8 18.Rd1 Nf4 (18...Nf4 19.Ke3 Ne6–+) 0–1. islanderfan (1940) – tmitchell (2000), net–chess.com, 2011.

5.c3 dc3 6.Bc3 Bc3 7.Nbd2?? Ba1–+ 8.Qa1 f6 9.e3 (9.d4 ed4 10.Nd4 c5–+) 9...Ne7 (10.d4 ed4 11.Nd4 c5 12.Bb5 Nbc6 13.Nc6 Nc6–+; 9...Nc6 10.Qb2–+) –+. Axel van Dijk – Klaus Behrmann, ChessWorld.net, 2003.

5.c3 dc3 6.Nc3 Nc6 –/+.

5.Nbd2 Nc6 6.e4 Nge7 7.Be2 Ng6 8.0–0 Nf4 9.g3 (Better is 9.a3 Bc5 10.Nb3–+) 9...Ne2 10.Qe2 Bg4 (11.Nb3 Qf6–+) 0–1. Milan van Dijk – anizan dolivia, ChessWorld.net, 2003.

5.Nbd2 Qe7 6.e4 Nf6 7.Be2 Nc6 8.0–0 0–0 9.h3 Ba3 10.Nc4 Bb2 11.Nb2 Qa3 12.Nc4 Qc5 0–1. Milan van Dijk – marekt, ChessWorld.net, 2003.

4.Nf3 Bd6

5.b5 a6 6.Na3? (6.c3!? dc3 7.Nc3=+) 6...f6 (6...Bb4 7.Nd2–+) 7.e4 (7.ba6 Bb4 (7...ba6?! 8.c3=) 8.Nd2 Ra6–/+) 7...Ba3 8.Ba3 ab5 9.Bb4 Nc6 10.Bc5?? (Better is 10.Qb1–/+) 10...Bd7 (Better is 10...b6 11.Bd4 ed4–+) 11.g4?? (Better is 11.Nh4 Be6 12.a4 ba4 13.Be2–+) –+. Milan van Dijk – Axel van Dijk, ChessWorld.net, 2003.

5.b5 b6 6.e4 (6.c3 c5=) 6...Nf6 7.Be2 0–0 8.0–0 Bc5 (8...a6!? 9.a4 ab5 10.ab5 Ra1 11.Ba1 Re8=) 9.Ba3 (Better is 9.Ne5!? Qe8 10.Nf3 Qb5 11.Bd4 Bd4 12.Nd4+=) +=. Milan van Dijk – xadrez, ChessWorld.net, 2003.

5.b5 Nf6 6.c3 =+.

5.c3 dc3 6.Bc3 Qe7 =.

4.Nf3 f6

5.c3 c5 6.a3 (6.bc5 Bc5 7.cd4 ed4=) 6...Be6 7.g3 Qc7 (7...dc3 8.Nc3 cb4 9.ab4 Bb4 10.Bg2=+) 8.Bg2 (8.bc5 dc3 9.Nc3 Bc5+=) 8...Nc6 9.0–0 Rd8 10.c4 cb4=+ 11.ab4 Bb4 12.Nfd2 Nge7 13.Bc6? Nc6 –+. Axel van Dijk – nbh999, ChessWorld.net, 2003.

5.e4 Bb4 6.Nbd2 (6.c3 dc3 7.Bc3 Bc3 8.Nc3 c5–/+) 6...Ne7 7.Be2 Be6 (8.a3 Ba5–/+) –/+. Milan van Dijk – nbh999, ChessWorld.net, 2003.

3.e3 Nc6

4.b5 Na5 5.Bd4 e6 6.Bc3 Nf6?? 7.Ba5+– b6 8.Bc3 Ne4 9.Qe2 Nc3 10.Nc3 Bc5 11.Qf3 Bd7 12.Ne4 Qe7 13.Ng5 0–0 14.Bd3 Qg5+/– 15.Nh3 Qd5? 16.Qd5?? ed5+/– 17.0–0 Bh3+= 18.gh3 Rae8 (19.Be2 Re6+=). tpt456 – juancabeta, internet, 2007.

4.b5 Nb4

5.Bd4 Bf5 6.d3 Qd5 7.Nc3 Qe6 8.Nf3 0–0–0 9.Ba7 b6 10.a3 Nd3?? 11.cd3 Bd3 12.Bd3 Rd3 13.Qd3 Kb7 14.Qd8 Qc8 15.Qc8 Kc8 16.Ne5 Nh6 1–0. Trkn – guest1232, ICC, 2004.

5.Bd4 Bf5 6.d3 e6 +/–.

5.Bd4 Bf5 6.d3 f6? 7.Bc5+– e5 8.Bf8 e4?? (8...Kf8 9.a3 Bg4+–) 9.Bg7 ed3 10.cd3 Nd3 11.Bd3 1–0. marekt – xadrez, ChessWorld.net, 2003.

5.Bd4 Nf6 6.a3 Nbd5 7.Nf3 Bg4 8.h3 e5 (8...Bh5!?+/–) 9.Be5+– Bf3 (9...Bh5 10.d4+–) 10.Qf3 (10.gf3?! Bd6 11.d4 Qe7+–) 10...Qd7? 11.c4 Qe6 12.d4 Nb6 13.Qb7 Bd6 14.Qc6 Nfd7 15.Bg7 Rg8 16.c5 Ke7 17.cb6 ab6 18.d5 Qe4 19.Nd2 Qa4 20.Bb2 Nc5 21.Nc4 Rg2 22.Nd6 Qa5 23.Ke2 Rg6 24.Qc7 Kf8 25.Qf7 1–0. marekt – Jan van Dijk, ChessWorld.net, 2003.

3.e3 de3

4.Bc4 ef2 5.Kf2 e6 (better is 5...Qd6 6.Qf3 Nh6–/+) 6.Qf3? (better is 6.Nf3–/+) 6...Bb4 (better is 6...Qh4 7.Qg3 Qc4 8.Bg7 Bg7 9.Qg7 Qh4 10.Kf1 Qf6 11.Qf6 Nf6–+) 7.Bg7= Qh4 8.g3 (better is 8.Qg3!? Qc4 9.Bh8=) 8...Qc4=+ 9.Bh8 Bc5 10.d4?? (10.Kg2 Bd7 11.Qd1=) 10...Bd4–+ 11.Bd4 Qd4 12.Kg2 Qa1 13.Ne2 Qf6 14.Nf4 Nc6 15.Qg4 Nh6 16.Qe2 Bd7 17.Nd5 Qe5 18.Qf2 Qd5 19.Kg1 Qd4 20.Qd4 Nd4 21.c3 Ndf5 22.Kf2 0–0–0 23.Rd1 Ng4 24.Ke1 Nh2 25.Nd2 Ng3 26.Nc4 Bb5 27.Rd8 Kd8 28.Ne5 Ke7 29.a3 f6 30.Kf2 fe5 31.Kg3 Nf1 32.Kf2 e4 33.a4 Bc4 34.a5 e3 35.Ke1 e2 36.a6 Ba6 37.Kf2 Ne3! 38.Ke3 e1Q 39.Kd4 Qd2 40.Ke5 Qc3 (41.Ke4 Be2 42.Kf4 Qf3 43.Ke5 Qe3#; 40...Qe3) 0–1. tb420 – sergikk, caissa.com, 2006.

4.de3 e6 5.Nf3 Nf6 6.b5 Be7 7.Qd8+= Bd8 8.Ba3 c6 9.Bd3 b6 10.Bd6 c5 11.Ne5 Nbd7 12.Nc6 Bb7 13.Nc3 Be7?? 14.Ne7+– Bg2 15.Rg1 Bb7 16.Rg7 Kf8 17.Rg5 h6 18.Rg3 Re8 19.Ng6 Kg8 20.Ne5 (20.Ne5 Ng4 21.Rg4) 1–0. mic (2100) – zook (1900), net–chess.com, 2008.

4.de3 Bf5 5.Qd8+= Kd8 6.Bd3 Bd7 (6...Bd3!? 7.cd3 e6+=) 7.b5 f6 8.Ne2 c6 9.a4 e5 10.0–0 Bd6 11.Nd2 Ne7 12.Ne4 Bc7 13.Nc5 b6 14.Nd7 Nd7 15.bc6 Nc5 16.Rfd1 Kc8? (better is 16...Nd3!? 17.Rd3 Kc8+–) 17.Ba3+– Nc6? (17...Nd3 18.Be7 Re8+–) 18.Bc5 bc5 19.Be4 Kb7 (19...Rb8 20.Bc6 Rd8+–) 20.Rab1 Bb6 21.a5 (better is 21.Rd7 Kc8 22.Bc6 Rb8 23.Rg7 Bc7 24.Bd7 Kd8+–) 21...Rad8 22.Bc6 (22.Bc6 Kc6 23.ab6 ab6 24.c4+–) 1–0. rayfranke (2470) – blackfox (2460), net–chess.com, 2014.

4.fe3 a6 5.Nf3 Nc6 6.a3 Bg4 7.Be2 f6 (7...Nf6 8.0–0+=) 8.h3 (8.0–0 Qd6+=) 8...Bh5 9.0–0 e5 10.c4 (10.Ne5 Be2 11.Nc6 Bd1 12.Nd8 Bc2=) 10...Nge7 11.Nc3 Nf5 (11...Bg6 12.d4+=) 12.Kh2 (12.g4 Ng3 13.gh5 Nf1 4.Bf1 Qd7+–) 12...Be7? (12...Bg6!?=) 13.b5 (13.g4 e4 14.Ne4 Nd6+–) 13...ab5 14.cb5 (14.Nb5 e4 15.Ne5 Bg6 (15...Ne5? 16.Bh5 g6 17.Be5 fe5 18.Rf5+–) 16.Ng6 hg6=) 14...Na5 (better 14...Na7 15.Ne5! Be2 16.Qe2 Bd6 17.Rf5 Qd7+–) 15.Ng1 (15.g4 e4 A) 16.gh5?! Qd6 17.Kh1 Ng3 18.Kg2 ef3 (worse 18...Nf1 19.Ne4 Qe6 20.Qc2+–) 19.Rf3 Ne2 20.Qe2 Nb3+=; B) 16.Ne4+–) 15...b6?? (better 15...Be2 16.Qe2 Qd7=) 16.Bh5+– (16.Rf5?! Be2 17.Nge2 Nc4+–) 16...g6 17.Rf5 gh5 (17...Nc4 18.Bc1 Nd6 19.Rf1 gh5 20.Qh5 Kd7 21.Qf3+–) 18.Qh5 Kd7 19.Ne4 (19.Nd5 Nb3 20.Qf7 Rf8 21.Nf6 Kc8 22.Qe6 Kb7 23.Be5 Rf6 24.Rf6 Bf6 25.Qc6 Kb8 26.Bf6 Qd6 27.Qd6 cd6+–) 19...Kc8 20.Rc1 Nb3 21.Rc3 (21.Rd1!? Ra5+–) 21...Nd2 22.Nd2 (22.Qg4 Kb8 23.Nd2 Qd2+–) 22...Qd2 23.Qg4 Qb2 (23...Kb8 24.Qc4 Bc5+–) 24.Rf2 f5 (24...Kb8 25.Rb2 e4 26.Rd2+–) 25.Qf5 (25.Rb2?! fg4 26.hg4 Rg8= (26...Ba3? 27.Ra2+–)) 25...Kb7 26.Rb2 Ka7 27.Rc7 (27.Rc7 Kb8 28.Re7 Ra7 29.Qe5 Rc7 30.Qc7 Ka8 31.Qb7) 1–0. GuestHGBN – GuestDZHZ, freechess.org, 2017.

4.fe3 Qd5 5.Nf3 Nc6 6.a3 Bg4 7.Be2 0–0–0 8.Nc3 Qe6? (8...Qd6 9.0–0+=) 9.0–0 (better is 9.Ng5 Qg6 10.Bg4 f5 11.Nce4 fg4 12.Qg4 Kb8 13.b5+–) 9...h5?? (better is 9...Bf3 10.Bf3 Nh6+/–) 10.Ng5+– Qg6 11.Nf7 Qf7 12.Rf7 Be2 13.Qe2 Ne5 14.Rf2 Nf6 15.Raf1 Nfg4 16.Rf4 g5 17.Rd4 Rd4 18.ed4 Ng6 19.h3 Nf6 20.Ne4 Ne4 21.Qe4 Nf4 22.d5 Rg8 23.Rf4 gf4 24.Qf4 Bh6 25.Qf7 Rf8 26.Qe7 b6 27.Bf6 Kb7 28.d6 Bd2 29.Qc7 Ka6 30.Be7 Rf7 31.Qc4 (31.Qc4 Kb7 32.d7 Be3 33.Kh1 Rf1 34.Qf1 Bc1 35.Qf3 Ka6 36.Qe2 b5 37.a4 Kb6 38.d8Q Kc6 39.Qb5) 1–0. Fournier,Frederic (1870) – Corazoncito(C) (1700), Active (½), 2005.

4.fe3 Qd6 5.a3 h6 (5...Nf6 6.Nf3+=) 6.Nf3+– Bg4 7.Be2 f6 (better 7...Nf6!?+–) 8.0–0 g5 (8...Nc6 9.Nc3 0–0–0 10.Ne4+–) 9.h3 (better 9.Nc3 Nc6 10.Nb5 Qd8+–) 9...Bf5 (9...Bh3 10.Ne5 Be6 11.Bh5 Kd8+–) 10.Nd4 Bg6 (10...Bd7 11.Nc3+–) 11.Bh5 Kf7 12.c3 (better 12.Qg4 e5 13.Nf5 Qc6 14.Be5 Nd7+–) 12...Nd7 (12...Nc6 13.Qb3 e6 14.Ne6 Bh5 15.Nf4 Ke7 16.Nh5+–) 13.Bg6 (13.c4 c5 14.Nf5 Qb6+–) 13...Kg6 14.Qc2 Kf7 15.Nf5 (15.c4 Ne5+–) 15...Qe6 (15...Qa6 16.c4 e6+–) 16.c4 h5 (16...Ke8 17.Nc3 Rc8 18.Ne4+–) 17.d4 (better 17.Nd4 Qa6 18.c5+–) 17...c6 18.Nd2 (18.e4 Ke8+–) 18...Nh6 Black prepares g4 19.e4 Nf5 20.ef5 Qe3 21.Kh1 (21.Kh2 g4 22.Ne4 gh3+–) 21...g4 22.c5 (better 22.Rae1 Qg3 23.Ne4+–) 22...gh3+= 23.Nf3 hg2 24.Kg2 Rg8 25.Kh2?? (better 25.Kh1 Rg4 26.Rae1+–) 25...Qf4–/+ 26.Kh1 Qg3 (26...Ke8 27.Rae1 Qg3 28.Qf2–/+) 27.Qh2 (27.Nh2 Rg7 28.Qe2=) 27...Qg4 (27...Qh2 28.Kh2 Bh6 29.Bc1 Bc1 30.Rac1–/+) 28.Nh4 (better 28.Rf2 h4 29.Rg1+=) 28...Qe4–/+ 29.Rf3?? (better 29.Nf3 Rg5 30.d5 Rf5 31.dc6 bc6 32.Rad1–/+) 29...Rg4–+ 30.Qf2 (30.Ng2 Qf3 31.Qh5 Kg8 32.Rg1–+) 30...Rh4 31.Kg1 Bh6 32.Re1 Rg8 33.Rg3 (33.Qg3 Rg3 34.Rg3 Qh1 35.Kf2 Rh2 36.Rg2 Qg2) 33…Qh1 (33...Rh1) 0–1. retiponziani (1765) – jamespond (1720), ChessWorld.net, 2014.

4.fe3 Bd7 5.a3 Nf6 6.Nf3 Ne4 7.Bd3 Nd6 8.0–0 Nc6 9.c4 e6 10.b5 Ne7 11.Ne5 Ndf5 12.g4 Nh6 13.Qf3 f6 14.g5 Nhf5 15.Nd7 Qd7 16.Qb7 Rd8 17.gf6 Rg8?? 18.fe7+– Be7 19.Qf3 Qd3+/– 20.Nc3 g6 21.Ne4 Rf8 22.Nc5 Bc5 23.Qc6 Rd7 24.Qe6?? Be7–+ 25.Bf6?? Rf6 26.Qc6 Rfd6 27.Qa8 Rd8 28.Qf3 Qd2 29.Rad1 Qe3 30.Qe3 Ne3 31.Rd6 Rd6 32.Re1 Nc4 33.a4 0–1. guest791 – guest681, ICC, 1999.

4.fe3 Nd7 5.Nf3=.

4.fe3 Bf5 5.Qf3 Bc8 6.Bc4 (6.Nh3 Nf6=) 6...e6 7.e4 Bb4?? (better is 7...Qh4 8.g3 Qe7=) 8.Bg7+– f6 (8...Ne7 9.Bh8 Ng6 10.Bf6+–) 9.c3 Bd6 10.Qh5 Kd7 11.Bh8 Qf8 (11...Qe7 12.Nf3+–) 12.Qh7 Be7 (12...Kd8+–) 13.Be6! Ke6 14.Qf5 Kf7 15.Qh5 Ke6 16.Qd5 1–0. kamera – Knightseyes (1670), GameColony.com, 2002.

4.de3 Qd1

5.Kd1 Nc6 6.b5 Na5 7.a4 Nc4?? (7...Bf5 8.Nd2+=) 8.Bc3 (better 8.Bc4 Bf5 9.Nd2+–) 8...Nd6 9.Nd2 (9.Bd3 Nf6=) 9...Bf5 (9...Nf6 10.Bd3=) 10.Bd3 Bd3 (10...Nf6 11.Ke2+=) 11.cd3+= 0–0–0 (11...a6 12.ba6 Ra6 13.Ngf3+=) 12.d4 (12.Ngf3 e6+–) 12...e6 13.Ngf3 Nf6 14.Ke2 (14.Ne5 Nd5 15.Kc2 Be7+=) 14...Nde4 15.Ne4 Ne4 16.Bb2 Bb4 (16...Bd6 17.Ba3=) 17.Ba3 (17.Ne5 Rhf8 18.f3+=) 17...Bc3 (better 17...Ba3!? 18.Ra3 Rhe8=) 18.Rac1+– Ba5 19.Rc4 (19.Ne5 Rd5+–) 19...Rd7? (19...f6 20.Rhc1+=) 20.Bb4 (better 20.Ne5+–) 20...Bb4= 21.Rb4 f6 22.a5 Rhd8 23.b6 cb6 (23...ab6 24.ab6 Nc3 25.Kd2 Ne4 26.Ke2 Nc3 27.Kd2 Ne4 28.Ke2=) 24.ab6 ab6 25.Ra1 (25.Rb6 e5=) 25...Rc7 (25...Rd6 26.Nd2 Nd2 27.Kd2=+) 26.Rb2 (26.Rb6 Rd6 27.Rb2 Rdc6=) 26...Kd7 (26...b5 27.Nd2 Nc3 28.Kd3=) 27.Nd2 (27.Rb6 Nd6=) 27...Nd2=+ 28.Kd2 Rc6 29.Ra7 Rb8 30.Rba2 Kd6 31.Ra8 Rcc8 (31...Rbc8 32.Rc8 Rc8 33.Rb2=+) 32.Rb8= Rb8 33.Ra7 (33.Rb2 Kc6=) 33...Kc6 34.Kd3 b5 35.Kc3 h5 36.Kb4 g5 (36...Rd8 37.Ra2=+) 37.Ra5= Exerts pressure on the isolated pawn 37...h4 38.Rb5 Ra8 39.Rc5 Kd6 40.Rc2 f5 41.Kb5 (41.Rb2 Ra1 42.Kc3 Kc6=) 41...Ra3 (41...Ra1 42.Kb6=+) 42.Rb2 Kd5 43.Kb6 Ke4 Black prepares f4 44.Kb7 f4 45.ef4 Kf4 46.Rd2 (46.Re2 Rd3=) 46...Ke4 47.Kc6 Ra6 48.Kd7 g4 49.Kc7 Ra7 50.Kc6 Ra6 51.Kb5 Rd6 Attacking the isolated pawn on d4 52.Kc5 Rd5 53.Kc4 Rd8 (53...Ra5 54.Re2 Kf5 55.h3 gh3 56.gh3=) 54.Re2 Kf5 55.Kd3 (55.Re5 Kf6+=) 55...Rd6 (55...Rd5!?+=) 56.Re5+– Kf6 (56...Kg6 57.Ke4+–) 57.Ke4 (57.Rh5!? Kg6 58.Rh4+–) 57...Ra6 58.f3 (58.Rh5 Ra2+=) 58...gf3 (58...Ra2 59.Rh5 Rg2 60.Rh4+=) 59.gf3 (59.Kf3 Ra1 60.Re4+=) 59...Ra3? (better 59...Ra2=) 60.h3 Ra1 61.Rh5 Re1 62.Kf4 Rd1 63.Ke3 Re1 64.Kd3 (64.Kf2 Rh1 65.Rh4 Rh2 66.Kg3 Rb2+–) 64...Rf1? (better 64...Rd1 65.Kc4 Rf1+=) 65.Ke2+– Rd1?? (65...Rh1 66.Rh4 Rh2 67.Ke3+–) 66.Rh4 (better 66.Kd1 Kf7 67.Rh4+–) 66...Ra1 67.Ke3 Ra3 68.Kf4 Ra4 69.Ke3 Ra3 70.Kf2 Ra2 71.Kg3 Ra4? (better 71...Ra1+–) 72.d5 (better 72.Rf4 Kg6 73.d5+–) 72...ed5 (72...Rh4 73.Kh4 ed5+–) 73.Ra4 Ke5 74.h4 d4 (74...Ke6 75.h5 d4 76.h6 Kf7 77.h7 d3 78.h8Q Ke6 79.Ra6 Kd5 80.Qc3 d2 81.Rc6 d1Q 82.Qc5) 75.h5 d3 (75...Kf6 76.Rd4 Ke5 77.Rd7 Ke6 78.Rg7 Kf5 79.h6 Ke5 80.h7 Kd5 81.h8Q Kc5 82.Qc8 Kd4 83.Rd7 Ke5 84.Qc6 Kf5 85.Rd5) 76.h6 d2 77.Ra1 (77.h7 Ke6 78.Rd4 d1R 79.Rd1 Ke7 80.h8Q Kf7 81.Rd6 Ke7 82.Qf6 Ke8 83.Rd8) 77...Kd4 78.Rd1 (78.h7 Kc4 79.h8Q Kd3 80.Qe8 Kc3 81.Qa4 d1Q 82.Rd1 Kb2 83.Qb4 Kc2 84.Rd2 Kc1 85.Qb2) 78...Kc3 (78...Kd3 79.Kf2 Kc3 80.h7 Kb4 81.h8Q Kc5 82.Qc8 Kd6 83.Rd2 Ke7 84.Qd7 Kf6 85.Rd6 Ke5 86.Qe6 Kf4 87.Qf6) 79.h7 Kc2 80.Rd2! Kd2 81.h8Q Kd3 82.Qe5 Kd2 (82...Kc2 83.Qf5 Kb3 84.Qb5 Ka3 85.f4 Ka2 86.f5 Ka3 87.f6 Ka2 88.f7 Ka1 89.f8Q Ka2 90.Qa8) 83.f4 Kd3 (83...Kc2 84.f5 Kc1 85.f6 Kd2 86.Qd5 Kc3 87.f7 Kc2 88.f8Q Kb2 89.Qd3 Kc1 90.Qfa3) 84.f5 Kd2 (84...Kc4 85.f6 Kb4 86.f7 Kc4 87.f8Q Kb3 88.Qc8 Kb4 89.Qc2 Ka3 90.Qd6) 85.f6 Kd3 (85...Kc2 86.f7 Kd3 87.f8Q Kc2 88.Qfc5 Kb3 89.Qe2 Ka4 90.Qec4) 86.f7 Kd2 (86...Kc4 87.f8Q Kb3 88.Qe4 Kb2 89.Qd3 Kc1 90.Qfa3) 87.f8Q Kd3 (87...Kc2 88.Qc8 Kb3 89.Qcc3 Ka4 90.Qe8) 88.Qfd6 (88.Qfc5 Kd2 89.Qc4 Kd1 90.Qee2) 88...Kc4 (88...Kc2 89.Qdd5 Kb1 90.Qe2 Kc1 91.Qdd1) 89.Qec5 Kb3 90.Qdb6 Ka4 91.Qca5 (91.Qbb4) 1–0. invictus31 – fardin3521 (1640), lichess.org, 2018.

5.Kd1 Bf5 6.b5 Nd7 7.Nf3 0–0–0 8.Kc1 Ngf6 9.Nbd2 Ne4 10.Ne4+/– Be4 11.Ng5 Bd5 12.c4 h6 13.cd5 hg5 14.Bd4 e5 15.Bb2 e4= 16.Bd4 Nf6 17.a4 Nd5 18.g4 Nf4 19.a5 Ne6 20.Bc3 f6 21.Bc4 Nc5 22.Bd4 Rh3 23.Bc5 Bc5–/+ 24.Be6 Kb8 25.Bf5 Rdh8 26.Kd2= Rh2 27.Rh2 Rh2 28.Ke2 Rh4 29.Rg1 Bb4= 30.a6 ba6=+ 31.ba6 c5 32.Be4 Kc7 33.Kd3 Kb6–/+ 34.Bb7 Kb5 35.Kc2 c4 36.Bc8 Rh8 37.Bb7 Rd8 (37...Rd8 38.Rd1 Rd1 39.Kd1 g6=+; 37...Rh2!? 38.Rf1 Bd6–/+) 0–1. Budrewicz,H – Roczniak,Jan, corr Poland, 1967.

5.Kd1 Bf5 6.Bd3 Bd3 7.cd3 Nc6 8.Bc3 a6 9.Na3 e5 10.Nc2 Bd6 11.Nf3 Nf6 12.Ke2 Nd5–/+ 13.Bd2 f6 14.Rhb1 b5 15.a4= Kd7 16.Rb3 Ra7 17.ab5 ab5= 18.Ra7 Na7 19.e4 Nb6 20.Be3 Rb8 21.Nd2 Nc6 22.Nb1 Na4 23.h3 g6 24.Bd2 h5 25.Be3 f5 26.f3 f4=+ 27.Bf2 g5 28.d4 Rg8 29.d5+= Ne7 30.Be1 g4 31.hg4 hg4 32.fg4 Rg4 33.Kf1 Ng8 34.Rh3 Nf6 35.Nd2 Nb2 36.Bh4= Ng8 37.Nf3 Nc4 38.Bg5 Nd2 39.Nd2 Rg5 40.Rh7 Kc8 41.Nf3+= Rg6 42.Rh5 Nf6 43.Rg5 Rh6 44.Nd2 Nh5 45.Rg8 Kb7 46.Kf2 Ng3 47.Kf3 Nh5 48.Nb3 Nf6 49.Na5+= Ka6 50.Ra8 Kb6 51.Nc6 Rg6 52.Rb8 Ka6 53.Ra8 Kb6 ½–½. Hoffmann,Piotr – Roczniak,Jan, corr 1. AMM Poland, 1991.

5.Kd1 f6 6.Nd2 e5 7.a3 Ne7 (7...Be6 8.Ke1=) 8.Bb5 (8.Ke1 Be6=) 8...Nbc6 9.Ke2 Be6 10.Ngf3 0–0–0 (10...a6 11.Bd3=) 11.Rhd1= a6 12.Bc4 Nd5 13.Ne4 (13.Kf1 Be7=) 13...Nf4 (13...Nc3 14.Ke1 Bc4 15.Rd8 Kd8 16.Nc3=) 14.ef4= Bc4 15.Ke3 ef4 16.Kf4 Be7 17.Rd2 Rd2 18.Nfd2 (worse is 18.Ned2 Bd6 19.Kf5 Bf7–/+) 18...Bf7 19.Rd1 Rd8 20.Ke3 (20.f3 b5=) 20...f5 21.Nc3? (better is 21.Ng3!? g6 22.Ke2+=) 21...a5 (21...Bg5 22.Ke2 Nd4 23.Kf1 Nc2 24.Ndb1–+) 22.b5 (22.ba5 Bg5 23.Ke2 Nd4 24.Kf1 Nc2–/+) 22...Nd4–+ 23.Rc1? (better is 23.Nf3!? Nc2 24.Kf4 Na3 25.Rd8 Kd8 26.Ba3 Ba3 27.Kf5–+) 23...f4! 24.Kf4 Decoy to f4 24...Ne6 Discovered attack 25.Ke3 (25.Kf3 Rd2 26.Ne4 Nd4 27.Kg3 Rc2 28.Rc2 Nc2–+) 25...Bg5 26.Kf3 (26.Ke2 Rd2 (26...Bd2?! 27.Rd1 Bf4 28.Nd5–+) 27.Kf1 Nd4–+) 26...Bd2 (26...Rd2?! 27.Ne4 Rd5 28.Ng5 Rg5 29.c4 Bh5 30.Ke3 Rg2 31.Be5–+) 27.Rb1 (27.Rh1 Nd4 28.Ke4 Bg6 29.Ke5 Nc2–+) 27...Nd4 28.Kg3 (28.Ke4 Nc2 29.f4 Rd4 30.Kf5 Bg6 31.Kg4 Rf4 32.Kg3 Nd4–+) 28...Bc3 29.Bc3 Ne2 (29...Ne2 30.Kh3 Nc3–+) 0–1. Wlosek,M – Roczniak,Jan, corr 1AMM Poland, 1992.

5.Kd1 Nf6 6.Bd3 g6 7.Nf3 Bg7 8.h3 0–0 9.Ke2 Nbd7 10.Nbd2 b6 11.Ne4 Bb7 12.Nf6 Nf6 13.Rab1 Ne4 14.Bg7 Kg7 15.Be4 Be4 16.Rbc1 Rad8 17.Rhd1 Rd6 18.Rd6 cd6 19.c3 Rc8 20.a3 h6 21.Kf1 (21.c4 Bd5 22.Kd3 f5=) 21...Bd3 22.Ke1 Be4 23.Kf1 Bf3 24.gf3 b5 25.Ke2 Kf6 26.e4 Ke6 27.Kd3 d5 (27...Rc6 28.a4 ba4 29.Ra1=) 28.Kd4 (28.a4 a6=) 28...Rd8 (28...Rc4 29.Kd3+=) 29.Ke3 a6 30.Rd1 Rd7 31.f4 (31.a4 f5+=) 31...f5 (31...de4 32.Rd7 Kd7 33.Ke4=) 32.ed5= Rd5 33.Rd5 (33.Rc1!?=) 33...Kd5–/+ 34.Kd3 e5 35.fe5 Ke5 36.c4 bc4 37.Kc4 Kf4?? (37...g5 38.Kc5 h5–/+) 38.a4+– Kf3 39.b5 ab5 40.ab5 Kf2 41.b6 f4 42.b7 f3 43.b8Q Kg2 44.Qf4 g5 45.Qg4 Kf2 46.Kd3 h5 47.Qh5 Kg3 (47...Kg2 48.Ke3 Kh2 49.Kf2 Kh1 50.Qf3 Kh2 51.Qg2) 48.Qg4 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.fe3 e6

5.a3 a5 =.

5.Na3 Qh4=+ 6.g3 Qb4 7.Bb5?? (better is 7.Rb1 c6 8.Nf3=+) 7...c6–+ 8.Bd3 (8.Bc3 Qa3 9.Bc4 Nd7–+) 8...Qb2 9.Nf3 (9.Nc4 Qf6 10.a4–+) 9...Qa3 10.Ng5 (10.0–0 Nf6–+) 10...h6 (better is 10...Be7 11.Ne4–+) 11.Nh7 Be7 12.Rf1 Nd7 13.g4 Nc5 14.Be2 Bh4 15.Rf2 Ne4 16.Bf3 Nf2 17.Qe2 Qb2 (18.d4 Qc3 19.Kf1 Qa1 20.Qe1 Qe1 21.Ke1 Ng4 22.Ke2 Nh2–+) 0–1. tuergeist – 73DADDELDU37, mySchach.de, 2005.

5.b5 Bd7 6.c4 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Nf6 10.Nf3 Bb4 11.Be2 c6 12.0–0 cb5 13.cb5 0–0 14.Ne5 (14.Qb3 Be7+=) 14...Qa5 The isolani on b5 becomes a target 15.Nd7 Nbd7 16.Nc3 Rc8 17.Bf3 b6 (17...Bc3 18.Bb7 Ba1 19.Bc8=+) 18.Bc6 Ne5 19.Ne4 Nc6 20.Nf6 gf6 21.Qg4 Kf8 22.bc6 Rc6 (better 22...Be7!? 23.Bc3 Qg5+–) 23.Bf6+– Bd2?? (better 23...Qc5 24.d4 Qd6+–) 24.Qg7 Ke8 25.Qg8 Kd7 26.Qf7 (26.Qd8) 26...Kc8+– 27.Qe8 Kb7 28.Qd7 Rc7 29.Qe6 Qc5 30.Bd4 (30.Qe4 Qc6 31.Qd3 Bc3+–) 30...Qb5? (better 30...Re7 31.Qa2 Be3 32.Be3 Qe3 33.Kh1 Qc3+–) 31.Qe4 Rc6 (31...Qc6 32.Qd3 Qg6 33.Qb5+– (33.Qd2?! Rc2 34.Qc2 Qc2=)) 32.Rf7 Ka6 33.Rf1 (33.Qh7?! Rc1 34.Kf2 Rf1 35.Kg3 Qg5 36.Kh3 Rf7 37.Qf7 Be3 38.Qc4 Kb7+–) 33...Rc4?? (33...Kb7 34.Qh7 Rc7 35.Qe4 Qc6+–) 34.Ra1 (34.Qa8) 34...Qa5+– 35.Ra5 (35.Qa8 Kb5 36.Qd5 Rc5 37.Ra5 Ba5 38.Bc5 bc5 39.Qd7 Kb4 40.Qh7 c4+–) 35...Ka5 (35...Ba5 36.Qh7 Rc1 37.Kf2+–) 36.Qd3 (36.Bb6!? Kb6 37.Qc4 Be3 38.Kf1 Bc5+–) 36...Rc1 37.Kf2 Bb4 38.Kg3 (38.Qh7 Bc5+–) 38...b5 (38...Rc7 39.Be5 Rb7 40.Qd5 Ka6 41.Qc4 Ka5 42.Qc6+–) 39.Qb3 (better 39.Qh7!? Bd6 40.Kf3 Rc7+–) 39...Rc4 (39...Bc5+–) 40.Qa2 (40.Qa2 Ba3 41.Qa3 Ra4 42.Qc3 Rb4 43.e4 h6 44.Bc5 Ka6 45.Qf6 Ka5 46.Qf7 Rb3 47.Qb3 Ka6 48.Qd5 b4 49.Qc6 Ka5 50.Qb6 Ka4 51.Qb4) 1–0. KLINGON09 (1800) – serkankos1 (1830), lichess.org, 2020.

5.Nf3 Bb4?? 6.Bg7 Nf6 7.Bh8 +–.

5.Nf3 b6 6.Be2 Bb4?? 7.Bg7 e5 8.e4 +–.

5.Nf3 b6 6.Be2 Bb7 7.0–0 h5 8.c4 h4 (8...Bb4? 9.Qa4 Nc6 10.Ne5+– (10.Bg7?! Rh7 11.Bc3 Qe7+=)) 9.h3 Nf6 (9...Bb4 10.Qa4 Nc6 11.Ne5 (11.Bg7?! Rh7 12.Bb2 f6+=) 11...Bd2 12.Nf7 (12.Nc6?! Be3 13.Kh1 Qd7+/–) 12...Be3 13.Kh1+–) 10.b5 Ne4 11.Be5 (better is 11.Ne5!? Nf6 12.Bf3+/–) 11...Nd7+= 12.Bh2 Ng3 13.Bg3 hg3 14.Qe1 Bd6 15.d3 f5 16.e4 f4 17.e5 Ne5 18.d4 Nf3 19.Bf3 Bf3 20.Rf3 Qe7 21.d5 (better is 21.Qe4!? 0–0–0 22.Qa8 Kd7 23.Qc6 (< 23.Qa7 Qf6 24.Rd3 f3–/+) 23...Kc8 24.Qa8 Kd7 25.Qe4= (25.Qa7? Qf6 26.Rd3 Qf5–+)) 21...e5 22.Qe4 Qf7 23.Nd2 g5 24.Nb3 Qh5 25.c5 bc5 26.Na5 g4 27.Rf4 gh3 28.Rf5 h2 (28...Qh4 29.Re5 Be5 30.Qe5 Kd8 31.Nc6 Kc8 32.Qe6 Kb7 33.Na5 Kb8 34.Nc6 Kb7 35.Na5 Kb8 36.Nc6 Kb7=) 29.Kh1–/+ Qh7?? (29...Qh6 30.Nc6 Qg7 31.Raf1=+) 30.Raf1?? (30.Re5 Be5 31.Qe5 Kd8 32.Qf6 Kc8 33.Qe6 Qd7 34.Qa6 Kd8 35.Qf6 Kc8 36.Re1+–) 30...Rf8?? (30...0–0–0 31.Nc6 Qh4 32.Qe3=) 31.Qg4 (31.Rf8 Bf8 32.Qh7 0–0–0 33.Qh3 Kb8 34.Nc6 Kb7 35.Nd8 Kb6 36.Qc8 c4 37.Ne6 Kb5 38.Rb1 Bb4 39.Qb7 Ka5 40.Qb4 Ka6 41.Nc7) 31...Rf5–/+ 32.Rf5 Rd8 33.Rh5?? (better is 33.Nc6=) 33...Qb1 34.Qd1 Qd1 0–1. GULP – MEXICO, Live Game Caissa's Web, 2004.

5.Nf3 f5 6.Be2 (better 6.Bc4+–) 6...Bb4?? (better 6...Nf6 7.b5 a6+=) 7.Bg7+– b5 (7...Nf6 8.Bh8 Nc6 9.Nc3+–) 8.Bh8 Be7 (8...Nf6 9.0–0+–) 9.Bb5 c6 10.Be2 (10.Bc4 Nf6 11.Nc3 Qd6+–) 10...Bf6 (10...Nf6 11.Nc3 Kf7 12.Bf6 Bf6 13.0–0+–) 11.Bf6 Qf6 (11...Nf6 12.0–0+–) 12.Nc3 Ne7 13.0–0 h5 (13...Nd7 14.Rb1+–) 14.Nd4 e5 (14...Qh6 15.Bh5 Kd8 16.e4+–) 15.Bh5 Kf8 (15...Kd8 16.Nf5! Bf5 17.e4+–) 16.Nf5! Nf5 (16...Bf5 17.e4 Decoy; 16...Nf5 17.Qg4 Pinning (17.Qg4 Decoy)) 17.Bg4 Be6 18.Bf5 Bf5 19.e4 (19.Qh5 Ke7 20.Rf5 Qf5 21.Qf5 Nd7 22.Qh7 Ke6 23.Qh6 Ke7 24.Qc6 Rc8 25.Nd5 Kd8 26.Qd6 Rc2 27.Rb1 Rb2 28.Qe7 Kc8 29.Rb2 Nb6 30.Qc7) 19...Nd7 20.Rf5 Qf5 21.ef5 Kf7 22.Qg4 (22.Qh5 Ke7 23.Ne4 Nf6 24.Qg5 Rf8 25.Nf6 Kd6 26.Ne4 Kd5 27.Qe3 c5 28.Qd3 Kc6 29.Qd6 Kb5 30.Rb1 Ka5 31.Qc7 Ka6 32.Nc5) 22...Rg8 23.Qh5 Kf8 (23...Ke7 24.Qh7 Kd6 25.Ne4 Kc7 26.Qg8 Nb6 27.Rb1 Nd7 28.Qa8 Nb6 29.Qa7 Kd8 30.Rb6 Ke8 31.Rb8) 24.Ne4 Ke7 (24...Rg2 25.Kg2 Ke7 26.Qg5 Kf8 27.Qd8 Kg7 28.Qd7 Kf8 29.Rb1 a6 30.Rb8) 25.Qh7 Kf8 (25...Rg7 26.f6! Nf6 27.Qg7 Kd8 28.Nf6 Kc8 29.Rb1 Kd8 30.Rb8) 26.Qd7 (26.Qd7 Rg4 27.Rb1 Rg2 28.Kg2 a6 29.Rb8) 1–0. retiponziani (1930) – luckyscot, ChessWorld.net, 2015.

5.Nf3 Nf6 6.a3 Be7 7.c4 0–0 8.Be2 Ne4 9.0–0 b6 10.d3 Nd6 11.Nc3 Nf5 12.Qd2 Bb7 13.e4 Nd4 14.Nd4 Qd4 15.Kh1 Nc6?? 16.Nd5!+– (16.Nd5 Bg5 17.Qc2 (17.Bd4?! Bd2 18.Be3 Be3 19.Ne3 Nd4=+) 17...ed5 18.Bd4 Nd4 19.Qb2 Ne2 20.Qe2 de4 21.de4+–) 1–0. Bartsch,Christian (1750) – Patterson,Stephen J, IECG, 2000.

5.Nf3 Nf6 6.a3 Be7 7.Be2 0–0 8.0–0 c5 9.b5 Nbd7 10.c4 Qc7 11.a4 (11.Nc3 Bd6=) 11...Ne8 (11...Bd6 12.Nc3=) 12.a5+= Bf6 13.d4 cd4 (13...Nd6 14.Nbd2+=) 14.ed4 g6 (14...Nd6 15.Qd3+=) 15.Nbd2 Bg7 16.Qb3 f5 (better 16...Nd6!?+–) 17.c5+– Ndf6 18.b6 (18.Bc4 Qd7+–) 18...Qd7 (18...Qe7 19.Ba3 Ne4 20.Ne4 fe4 21.Ne5 Rf1 22.Bf1+–) 19.Ne5 Qd8 (19...Qe7 20.c6 ab6 21.Ba3+– (21.ab6?! Ra1 22.Ra1 Ng4+–; 21.Qb6?! Nd5 22.Qb5 Nd6+=)) 20.Bc4 (better 20.a6!? Nd5 21.c6 Be5 22.cb7 Nb6 A) 23.ba8R?! Bd4 24.Kh1 Na8+–; B) 23.ba8Q?! Bd4 (23...Na8? 24.de5 Qd2 25.Bf3+–) 24.Bd4 Qd4 (24...Na8 25.Nf3+–) 25.Kh1 Na8+=; C) worse 23.bc8R Bd4 24.Kh1 C1) worse 24...Nc8 25.Bd4 Qd4 26.Bf3+= (worse 26.Qe6 Kh8=+); C2) 24...Rc8=+; D) worse 23.bc8Q Bd4 (23...Qc8?? 24.de5 Rb8 25.Rac1+–) 24.Kh1 Rc8=+ (24...Qc8? 25.Bd4 Nd5 26.Bc4+–; 24...Nc8 25.Bf3 Bb2 26.Qb2+=); E) worse 23.bc8N Bd4 24.Kh1 E1) worse 24...Nc8 25.Bd4 Qd4 26.Bf3+= (worse 26.Qe6 Kh8=); E2) 24...Rc8=+; F) worse 23.bc8B Bd4 24.Kh1 F1) worse 24...Nc8 25.Bd4 Qd4 26.Bf3+= (worse 26.Qe6 Kh8=+); F2) 24...Rc8=+; G) 23.de5 Qd2 G1) 24.bc8B?! Rc8 (24...Qe2? 25.Be6 Kh8 26.Ba3+–) 25.Bf3 Nc7=; G2) 24.bc8N?! Rc8 25.Bf3 Nc7=; G3) 24.Qb6 ab6 25.ba8Q Qb2 26.Qc8 Qe5 27.a7+–) 20...Nd5+– 21.a6 (21.Ndf3 ab6 22.ab6 Ra1 23.Ra1 Rf6+–) 21...ab6 22.cb6 Be5 23.Bd5 (23.de5!? ba6 24.b7 Bb7 25.Qb7+=) 23...Qd5 (23...Bh2!? 24.Kh2 ed5 25.ab7 Bb7 26.Ra8 Qa8=+) 24.Qd5+= Bh2 25.Kh2 ed5 26.a7 (26.Ba3 Ra6 27.Bf8 Ra1 (27...Kf8? 28.Ra6 ba6 29.Rc1+–) 28.Ra1 Kf8+=) 26...Nd6 (26...Rf6!? 27.Rfe1 Bd7=+) 27.Rac1 (27.Rfc1 Ne4 28.Ne4 fe4+–) 27...Re8 (27...Rf6 28.Ba3+=) 28.Ba3 (28.Rc5 Be6 29.Rc7 Rec8+–) 28...Nb5 (28...Ne4 29.Ne4 de4 30.Rc7+–) 29.Bc5 Re2 (29...Kf7 30.Nf3+–) 30.Nf3 h6 31.Rfe1 (31.Rce1 Re4+–) 31...Re1 (31...Re4!?+–) 32.Re1+– Kf7? (32...Nc3 33.Re8 Kf7 34.Rd8+–) 33.Re7 (better 33.Ne5!? Kf6 34.Re3 f4+–) 33...Kf6 34.Ne5 Be6 (34...Nd4 35.Re8 Ne6 36.Nd7 Kg5 37.Be7 Kg4 38.Nf6 Kf4 39.Bd6 Kg5 40.Nd5 Ng7+–) 35.Rb7 (35.Rb7 Bc8 36.Rb8 Ra7 37.ba7 Na7 38.Ba7+–) 1–0. jaddwarrior (1875) – mckenna215 (1965), ChessWorld.net, 2013.

4.fe3 Nf6

5.b5 b6 6.Nf3 Nbd7 7.c4 Bb7 8.d4 e6 9.Qb3 Bf3 10.gf3 Nh5 11.Bg2+= Qh4 12.Ke2 Bd6 13.Nd2 Bh2=+ 14.Nf1 Ng3–/+ 15.Ng3 Qg3 16.Kf1 e5 17.f4+= Rd8 18.fe5 Ne5= 19.Qc2 Ng4–/+ 20.Bc6 Kf8 21.Ba3 Kg8–+ 22.Bc1 Rd6 23.Ke2 Rc6?? 24.Qe4+/– Qf2 25.Kd3 h5 26.bc6?? Rh6 27.Bd2= Re6 28.Qd5 g6 29.Rae1 Qf6 30.Ref1 Qe7= 31.Rf3 a5 32.Rhf1 f5 33.Rf5?? gf5–+ 34.Rf5 Bg1 35.c5 bc5–/+ 36.dc5 Be3–+ (< 36...Ne3 37.Be3 Be3 38.Re5+/–) ½–½. Budrewicz,H – Roczniak,Jan, corr Poland, 1967.

5.b5 e6 6.a4 Bd6 7.c4 0–0 8.Ne2 Nbd7 9.Ng3 Nd5 10.Qc2 Ba3 11.c5 a6 12.Bf6 ab5 13.d4 Ne7 14.Qe4 Ng6 15.Kf2 Nh4 16.Ke2 (better 16.Bd8 Nf5 17.Na3+–). RichardSommer (1950) – Rusnakov (2000), lichess.org, 2020.

5.Nf3 Nbd7 6.a3 (6.Be2 e6=) 6...e6 7.Bc4 c6 8.0–0 b5 9.Be2 a5 10.ba5 Qa5 11.c4 bc4 12.Bc4 Qh5 13.Nc3 Bd6 14.Qc2 (14.Be2 0–0=) 14...Ne5 15.Ne5 Be5 16.h3 Qh4 (16...Ba6 17.Ba6 Ra6 18.d4+=) 17.Nd1+= Bb2 18.Nb2 0–0 19.Be2 e5 20.Qc6 Be6 21.Nd3 Qg5 22.h4 Qh4 23.Ne5 Qg3 24.Nf3 Rfc8 25.Qb5 Bh3 26.Ne1 Bd7 27.Qd3 Be6 28.Rf4 Ra5 29.Bf3 Rac5 30.Bb7 Rb8 31.Qd6 Nd7 32.Bf3 Rbc8 33.Rd4 Qg5 34.Qf4 Qe7 35.Nd3 R5c7 36.a4 Nb6 37.Nb4 (37.a5 Nc4 38.Nf2 Na3+=) 37...Rc1 (37...Rc4!? 38.Rc4 Nc4+/–) 38.Rc1+/– Rc1 39.Kf2 Nd7 (39...Rc8!?+/–) 40.Nc6+– Qe8 41.a5 (41...f6 42.Qc7+–; 41.Qc7 Rc5+–) 1–0. marekt (2150) – anizanm (1935), ChessWorld.net, 2003.

5.Nf3 e6 6.a3 Bd6 7.Bc4 a5 8.b5 Nbd7 9.0–0 Nb6 (9...0–0 10.Qe2=) 10.Bd3 Nbd7 11.Qe1 e5 12.Qh4 0–0 13.Ng5 h6 14.Ne4 Re8 15.Nbc3 Qe7 16.Rf2 Rb8 (16...a4 17.Bc4+=) 17.Raf1+/– Qd8 18.Nf6 Nf6 19.Rf6 (19.Ne4 Nh7 20.Qd8 Rd8+–) 19...Be7+/– (19...gf6 20.Qh6 (20.Rf6?! Bf8+–) 20...f5 21.Rf3+–) 1–0. marekt (2215) – Alissa (2355), ChessWorld.net, 2003.

5.Nf3 e6 6.b5=.

5.Nf3 e6 6.d4 Bb4 7.c3 Be7 8.Bd3 Bd7 9.Qc2 g6 (9...Nd5 10.Bc1=+) 10.h4 (10.0–0 c5=) 10...Bc6 11.h5 (11.e4!?=+) 11...Bf3 12.gf3 Qd5 (better is 12...Nh5 13.Qf2 Nd7–/+) 13.e4+= Qg5 14.hg6 fg6 15.Nd2 h5 (better is 15...Qg3!? 16.Kd1 Nh5=) 16.0–0–0 Nc6 17.e5 Nd5 18.Be4 (better is 18.Bg6 Kd7 19.Rdg1+/–) 18...Ne3=+ 19.Qa4 Nd1 20.Bc6 bc6 21.Qc6 Kf7 22.Kd1? (22.Rd1 Rab8 23.f4–/+) 22...Rhc8 23.Qd7 a5 24.Ba3 Re8 25.Ne4 (25.Kc2 Ra7–/+) 25...Qe3 (better is 25...Qg2 26.Re1 Kf8–+) 26.Re1?? (better is 26.Kc2=+) 26...Qd3–+ 27.Kc1 Rad8 28.Ng5 (28.Qc7 Rc8 29.Qa5–+) 28...Kg8 29.Qe6 Kg7 (29...Kh8 30.Be7 Qc3 31.Kd1 Rd4 32.Ke2 Rd2 33.Kf1 Qd3 34.Kg1 Qd4 35.Kh1 Qh4 36.Nh3 Re7 (36...Qe7?? 37.Qg6 Rg8 38.Qh6 Qh7 39.Qd2+–) 37.Qf6 Qf6 38.ef6 Re1 39.Ng1 Rdd1–+) 30.Qf7= (30.Be7?? Qc3 31.Kd1 Rd4 32.Ke2 Rd2 33.Kf1 Qd3 34.Kg1 Qd4 35.Kh1 Qh4 36.Nh3 Qe1 37.Ng1 Qh4 38.Bh4 Re6 39.Bf6 Kf7–+) 30...Kh6 31.f4?? (31.Qh7 Kg5 32.Be7 Kf4 A) 33.Bd8 Qc3 34.Kd1 Qa1 35.Kc2 Qa2 36.Kc3 Qa3 37.Kd2 Qb2 38.Kd3 Qb3 (38...Rd8 39.Qf7 Kg3 40.Qg6 Kh2 41.Qh5 Kg2 42.Qh1 Kg3 43.Rg1 Kf4 44.Qh4 Kf3 45.Qf6) 39.Ke2 Rd8 40.Qh6 Kf5=+; B) 33.Qf7 Kg3 34.Bh4 Kh3 35.Rh1 Kg2 36.Rh2 Kh2 37.Qf4 Kh1 38.Be1–+) 31...Qc3 (31...Ba3) 32.Kd1 Rd4 (32...Qd3 33.Kc1 Ba3) 33.Ke2 Qd2 (33...Rd2 34.Kf1 Qd3 35.Kg1 Qg3 36.Kh1 Qe1) 34.Kf3–+ Qd3 (35.Kg2 Rf4 36.Qf4 Qa3 (36...Ba3?? 37.Ne6 Kh7 38.Qf7 Kh8 39.Qg7; 36...Bg5?! 37.Bf8 Rf8 38.Qf8 Kh7 39.e6 Qd2 40.Qf2 Qf2 41.Kf2=) 37.Nf7 Kg7–+; better is 34...Rf4! 35.Qf4 Qe1 (35...Bg5?! 36.Bf8 Rf8 37.Qf8 Kh7 38.Qf7 Kh6 39.Qf8 Kh7 40.Qf7 Kh6 41.Qf8=) 36.Be7 Qf1 (36...Re7?? 37.Qf8 Rg7 38.Nf7 Kh7 39.Qh8) 37.Ke3 Qf4 38.Kf4 Re7–+) 0–1. slavisa10 – igorA26, Live Game Caissa's Web, 2004.

5.Nf3 Bg4

6.a3 e6 7.Be2 Be7 (7...a5 8.b5=) 8.0–0 0–0 9.Nc3 c6 10.Qe1 Qd6 (10...Nbd7 11.Qg3=) 11.Rd1 Nbd7 12.e4 Bf3 13.Bf3 a5 14.d4 Qc7 15.e5 Nd5 16.b5 N7b6 17.bc6 Qc6 18.Rd3 Qd7 19.Nd5 ed5 20.Bc1 Nc4 21.Qg3 Kh8 22.Bg4 Qc6 23.Bf5 g6 24.Bh6 Rg8 25.Bh3 (25.Bg4 f5 26.ef6 Bf6+=) 25...f5 (better is 25...g5!? 26.Rf7 Qh6 27.Re7 g4 28.Bg4 Qc1 29.Rd1 Qg5=) 26.ef6+/– Bf6 27.Qf2 Bg7 28.Bg7 Rg7 29.Rf3 Rgg8? (better is 29...Qe8+=) 30.Rf6+– Nd6 31.Qh4 Qc7 32.Be6 Nf5? (32...Qe7 33.Bg8 Rg8+–) 33.R1f5! (33.Bf5?! gf5 34.R6f5 Qd6+–) 33...gf5 34.Rf7 (34.Bd5?! Qc2 35.Re6 Rg7=+; 34.Bg8?! Rg8 35.Re6 Qg7+/– (35...Qc2?? 36.Qf6 Rg7 37.Re8#)) 34...Rg2 35.Kg2 Qc2 36.Kh3 Qd3 37.Qg3 Qd4 (37...Qg3 38.hg3 b5+–) 38.Bf5 (38...Qh4 39.Kh4 Rg8 40.Rh7#; 38.Rb7?! f4 39.Qb3 Qe3 40.Qe3 fe3 41.Bd5 Re8+–; < 38.Rf5 Qe4 39.Qf2 Qe6 40.Qd4 Kg8 41.Qg4 Qg6+–) 1–0. marekt – nbh999, ChessWorld.net, 2003.

6.c4 e6 7.b5 Ne4 (7...Bd6 8.Be2=) 8.d3 (better is 8.Be2=) 8...Qh4?? (better is 8...Bb4 9.Ke2 Nf6=+) 9.Nh4+– Bd1 10.Kd1?? (better is 10.de4 Bc2 11.Nd2+–) 10...Nf2+/– 11.Ke1 (better is 11.Ke2!? Nh1 12.g3+/–) 11...Nh1= 12.Be2 (12.g4 h5 13.g5 Nd7=) 12...Bd6 13.Nf3 Rg8 (13...Bc5 14.d4 Bd6+/–) 14.Kf1+/– g5 15.Kg1 g4 16.Ne5 (16.Kh1?! gf3 17.Bf3 c6=) 16...h5 17.d4 f6 (17...Be5!? 18.de5 Ng3 19.hg3 a6+/–) 18.Nd3+– Ng3 19.hg3 Bg3 20.Nf4 (better is 20.Nc5!?+–) 20...Bf4+/– 21.ef4 Nd7 22.Nc3 0–0–0 23.Ne4 e5 (23...h4 24.d5 f5 25.Ng5 ed5 26.Bd3 (26.cd5?! Nb6=) 26...dc4 27.Bc4+=) 24.de5 fe5 25.fe5 Rge8 26.Rd1 Ne5 27.Rd8 Rd8 28.Be5 (28.Ng3!? h4 29.Be5+–) 28...Re8+/– 29.Bc3 Re4 30.Kf2 Kd7 31.Bd3 Re7? (better is 31...Re8!?+/–) 32.Bg6 g3 (32...a5 33.Bf6 g3 34.Kg3+–) 33.Kf3 h4 34.Bf6 h3 35.gh3 (35.Be7? h2 36.Bb4 h1Q 37.Bf5 Kd8 38.Kg3 Qc1–+) 35...g2 36.Kg2 (36.Bf5!? Ke8 37.Kg2 Re2 38.Kg3 c5+–) 36...Re2 37.Kf3 Ra2 38.h4 a6 39.h5 ab5 (39...Ke6 40.Bd4 Rh2 41.Bg7 Rh3 42.Kg4+–) 40.cb5 (better is 40.h6 Ra8 41.h7+–) 40...Ra5 (40...Ke6 41.Bg7 Ra3 42.Kf4 Ra4 43.Be4+–) 41.Bd3 (41.h6 Ke6 42.Bd4 Ra8+–) 41...c6 (41...Ra3 42.Ke3 Ke6+–) 42.bc6 bc6 43.h6 Ke6 44.Bg7 (better is 44.h7 Ra8 45.h8Q Rh8 46.Bh8 Kd5+–) 44...Ra7 (44...Ra3 45.Ke2 Kf7+–) 45.h7 Rg7 46.h8Q (46...Rf7 47.Ke3+–) 1–0. Otte,Marco – Walstra,Gerrit, Wag.Intcomp Wageningen, 2001.

6.Be2 c5 7.bc5+= Qa5 8.0–0 Qc5 9.d4 Qb6 10.Ba3 Nc6 11.Nbd2 e6 12.Nc4 Qc7 13.Bf8 Rf8 14.Rb1 Ne4 15.Rb3 Na5 (15...Rd8!?+=) 16.Na5+/– Qa5 17.Ne5 (17.Rb7!? Nc3 18.Qe1+/–) 17...Be2 18.Qe2 Nd6 19.Nc4 Nc4 20.Qc4 Qa6 21.Qa6 ba6 The passed pawn on c2 will quickly become a dangerous weapon 22.Rb7 h5 23.c4 g6 24.Rfb1 f6 25.c5 Rf7?? (25...e5+–) 26.Rb8 (26…Rb8 27.Rb8 Kd7 28.Rb7 Ke8 29.c6+–) 1–0. Labahn,Wolfgang – Gross,Wilhelm, corr SOK–87–03, 1987.

6.Be2 e6!? 7.a3 a5 =.

6.Be2 e6 7.a3 c5 8.bc5 Bc5 9.d4 Bb6 10.c4 0–0+=. Wolfgang Labahn.

6.Be2 e6 7.a3 Bd6 =.

3.e3 e5

4.a3 (--> 1.b4 e5 2.a3 d5 3.Bb2 d4 4.e3).

4.b5 (--> 1.b4 e5 2.b5 d5 3.Bb2 d4 4.e3).

4.Bc4 Bb4 5.Qh5 (5.ed4 ed4 6.Qe2 Kf8=) 5...Qe7 6.Nf3 (6.ed4 ed4 7.Ne2 Nc6=+) 6...Bd6 (6...Nc6 7.a3 Bc5 8.0–0–/+) 7.Qg5 (7.ed4 ed4 8.Kd1 Nf6 9.Qb5 c6=+) 7...f6–/+ 8.Qh5 g6 9.Qh4 de3 10.fe3 Be6 11.Bd3 (11.0–0=+) 11...Bf5 (11...g5!? 12.Qa4 Qd7–/+) 12.Bf5= gf5 13.Qh5 Qf7 14.Qf5 Nd7 (14...Ne7 15.Qe4 Nbc6 16.Nc3=) 15.0–0 (15.e4 Ne7 16.Qh3 Qg6=) 15...Qg7 (15...Ne7 16.Qh3=) 16.d4 0–0–0 17.de5 (17.Nbd2 Ne7 18.Qe6 Rhg8=) 17...fe5 18.Nc3 (18.Nbd2 Ne7 19.Qh3 Rhf8=) 18...Ne7 19.Qh3 Kb8 (19...Bc5 20.Rae1 Kb8 21.Ne4=) 20.Ne4 Nc5?? (better is 20...Nd5=) 21.Nc5+/– Bc5 22.Ne5 Ka8 23.Nd3 Qg5 24.Nc5 Qc5 25.Bh8 Rh8 26.Rf7 Nd5 27.Qd7 Ne3 28.Qe7 Qe7 29.Re7 Nd5 30.Rd7 Ne3 31.Re1 Nc2 32.Rh7!! Rf8 33.Rc1 Ne3 34.Rhc7 Kb8 35.Re7 Nd5 36.Re5 Nb4 37.Rce1 Na2 38.Re8 Re8 39.Re8 Kc7 40.h4 b5 41.h5 b4 42.h6 b3 43.Re1 b2 44.Rb1 1–0. slagveld (1740) – Istvanny (1690), internet, 2007.

4.ed4 e4 5.b5 c6 6.a4 cb5 7.Bb5 Bd7 8.Nc3 Bb5 9.Nb5 (9.ab5!? Nf6 10.Qe2 Bb4 11.Ne4 0–0 12.Nf6 Qf6+–) 9...a6 10.Nc3 Bb4 (10...Nf6!? 11.Qe2 Qe7+/–) 11.Ne4+– f5 12.Nc5 Nf6 13.Ne6 Qe7 14.d5! Ne4?? (14...Nd5 15.Qf3 Double attack (15.Bg7 Pinning; 15.Bg7 Deflection; 15.Qf3 Decoy; 15.Bg7 Clearance)) 15.Qh5 (better is 15.Nf3 Rg8 16.0–0 Nd7+–) 15...g6 16.Qh6 (better is 16.Qe2 Rg8 17.Nf3+–) 16...Bd2+= 17.Kf1?? (better is 17.Qd2 Nd2 18.Kd2=) 17...Bh6–+ (17...Bh6 18.Bh8 Nd7–+) 0–1. tuulevalja – amfipolis, kurnik, 2014.

4.e4 Bb4 5.c3 dc3 6.Nc3 Bc5 7.Nf3 f6 8.Nd5 Nh6 9.Bc4 Ng4 10.0–0 c6 11.h3?? (11.Ne3=+) 11...Nh6 (better is 11...Nf2 12.Qc2 Ne4 (12...cd5?! 13.Bb5 Bd7 14.Qc5 Ne4 15.Qd5 Qb6 16.Bd4 Qb5 17.Qe4–+) 13.d4 cd5 14.dc5 dc4 15.Qe4 Qd3–+) 12.Ne3+= b5 13.Bb3 a5 14.d4 Bd6 (14...ed4 15.Nd4 Bd4 16.Bd4 a4 17.Qh5 g6 18.Qh6 Qd4+–) 15.de5+/– fe5? (better is 15...Be5 16.Qd8 Kd8 17.Ne5 fe5 18.Be5 a4 19.Bg7 ab3 20.ab3 Ra1 21.Ra1 Nf7 22.Bf6 Kc7 23.Ra7 Bb7 24.Bh8 Nh8+/–) 16.Ne5+– (16.Be5?! Be5 17.Qd8 Kd8 18.Ne5 Re8=) 16...a4? (16...Be5 17.Qh5 Kf8 18.Be5 Ra7+–) 17.Bc2 (17.Qh5 Kf8 18.Nf7+–) 17...0–0 18.Nf3 Nd7?? (18...Be6!?+=) 19.e5 (better is 19.Qd6 Ra6 20.e5+–) 19...Bc5? (better is 19...Bc7+/–) 20.Qd3+– Qe7?? (20...g6 21.e6 Rf3+–) 21.Qh7 Kf7 22.e6! Ke8 (22...Qe6 23.Ng5) 23.Nf5 (better is 23.ed7 Kd7 24.Ne5 Kc7 25.Ng6+–) 23...Qe6 (23...Nf5 24.ed7 Bd7+–) 24.Rae1 (better is 24.Ng7 Ke7 25.Ne6 Rf7 26.Qh6 Bb6+–) 24...Ne5 (24...Nf5 25.Re6 Ne7 26.Qg7+–) 25.Re5 Bf2 26.Rf2 Nf5 27.Re6 Be6 28.Bf5 Bf5 29.Re2 Kd7 30.Qg7 Kd6 31.Qe7 Kd5 32.Qe5 Kc4 33.Qd4 1–0. chevin – vello01, Live Game Caissa's Web, 2004.

4.Nf3 Bb4 5.Ne5 de3 6.fe3 Qh4 7.g3 Qe4 8.Nf3 (8.Qf3 Bf5=) 8...Qe3=+ 9.Be2 f6?? (better is 9...Qh6=+) 10.c3+– Qb6 11.cb4 Qb4 12.Qb3 Nc6 13.0–0 (13.Bc4 Qb3 14.ab3 Bg4+–) 13...Qb3+/– 14.ab3 Be6 15.Bc4 Bc4 16.bc4 Nb4 17.Ng5 (better is 17.Bd4+/–) 17...Nh6? (17...Nd3 18.Ba3 Rd8+–) 18.Re1?? (better is 18.Ne6 Kf7 19.Nc7+–) 18...Kd7=+ Black fights for the Initiative 19.Nf3 Nc2 20.Nc3 Ne1 21.Re1 Rhe8 22.Ne2 Re4 23.d4 Rae8 24.Kf1 Ng4 25.Bc1 c5 26.h3 Ne3 27.Be3 Re3 28.Kf2 cd4 29.Nfd4=+ a6 30.Rd1 Kc7 31.Nf5?? R3e7 32.Ne7+/– White gets strong initiative 32...Re7 33.Nf4 Kc8 34.Nd5+– Re6 35.Re1 Re1 36.Ke1 b5 37.cb5 ab5 38.Kd2 Kd7 39.Kd3 Kd6 40.Kd4 f5 41.Nb4 g5 42.Nd5 h5 43.Nc3 b4 44.Nd1 f4 45.g4 hg4+/– 46.hg4 b3 47.Ke4 Kc5+= 48.Kd3 Kb4=+ 49.Kd2 Kc4 (50.Nb2 Kd4=+). Urbaniak,Jozef – Roczniak,Jan, corr Poland, 1990.

4.Nf3 e4 5.Nd4 Nf6 6.Bc4 Bb4= 7.Nf5?? (better 7.f3=) 7...Bf5–+ 8.a3 Ba5 9.0–0 Nc6 10.d3 ed3 11.cd3 Qd7 (11...Qd6 12.e4 Ng4 13.g3–+) 12.e4 Bg4 13.f3 (13.Qa4 Bb6–+) 13...Bh5 (13...Be6 14.Bb5–+) 14.Nd2 0–0–0 (14...Bb6 15.Kh1–+) 15.Rb1 Bb6 16.Kh1 Nd4 17.a4 (17.Nb3 Rhe8–+) 17...a6 18.Bc3 g5 (18...Rhf8!? 19.a5 Ba7 20.Qc1–+) 19.a5 (19.Rb6!? cb6 20.Nb3 Qa4 21.Bd4 Rd4 22.Nd4 Qd1 23.Rd1–/+) 19...Ba7 20.e5? (20.Nb3 Qc6 21.Qd2 Nb3 22.Rb3=+) 20...Nd5 21.Ne4 (21.Bd4 Bd4 22.Ne4 Be5–+) 21...Ne3 (better 21...Nc3!? 22.Nc3 Qe7 23.Qc1 Qe5 24.Qb2–+) 22.Qe2?? (22.Bd4 Nd1 23.Ba7–/+) 22…Ne2 (22...Ne2 23.e6 fe6 24.Bh8 Rh8–+) 0–1. alt20 – przem, lichess.org, 2014.

4.ed4 ed4

5.a3 a6 6.Bc4 Nf6 7.h3 b5 8.Bb3 c5 9.bc5 Bc5 10.Qf3 (10.Qe2 Qe7 11.a4 b4 12.Qe7 Ke7+=) 10...Ra7 (10...Qe7!? 11.Qe2 Ra7–+) 11.Ne2+= Bb7 12.Qf5 Nbd7 13.0–0 Be4 14.Qg5 h6 15.Qg3 (15.Qg7 Rh7 16.Qg3+/–) 15...Nb6 (better is 15...Nh5!? 16.Qh2 0–0+=) 16.d3 (16.Qg7?? Rg8 17.Qg8 Ng8–+) 16...Ba8? (better is 16...Bd6 17.f4 Bc5+/–) 17.Nd2?? (better is 17.Nd4 Bd4 18.Bd4 Qd4 19.Qb8 Nc8 20.Qc8 Qd8 21.Re1 Re7 22.Re7 Ke7 23.Qa6+–) 17...0–0 18.Nf4 Bd6 (better is 18...Na4!? 19.Ba4 ba4+=) 19.Bd4+= Nh5? (better is 19...g5 20.Bf6 Qf6+/–) 20.Bb6?? (better is 20.Qg6! Nf6 21.Qf5+/–) 20...Qb6 21.Qg4?? (better is 21.Qe3 Qe3 22.fe3 Nf4 23.ef4+=) 21...Nf4–+ 22.Ne4 Be4 23.de4 Re7 24.Rfe1 Kh8 25.g3 Ng6 26.Kg2 Re5 (26...Ne5 27.Qh5–+) 27.h4 (27.f4 Rc5 28.a4 h5–+) 27...Qa7 (27...Rc5!? 28.Red1–+) 28.Rad1 Bb8 (better is 28...Rd8–+) 29.Rd7–/+ Qc5 30.Rf7 Qd6?? (better is 30...Rf7 31.Bf7 Nf8–/+) 31.Rd1+– Rf7 (31...h5 32.Rf8 Nf8+–) 32.Rd6 Bd6 33.Bf7 Nf8 34.h5 Rg5 (34...Re7 35.Qf5 Rd7+–) 35.Qc8 Ba3 (35...Re5+–) 36.f4 Kh7 37.fg5 hg5 38.Bg6! Kh6 (38...Ng6 39.Qa6 Double attack (39.Qa6 Decoy; 39.Qa6 Zwischenzug)) 39.Qc3 (39.Qc3 Be7 40.Qc6+–) 1–0. gjilanasi71 (1720) – spodide (1735), kurnik, 2014.

5.a3 Nc6 6.Bc4 (6.Nf3 Bg4 7.Be2 Bf3 8.Bf3 Qe7 9.Qe2 0–0–0+=) 6...Be6 (6...Qg5!? 7.Qe2 Nge7=) 7.Be6+= fe6 8.d3 (8.Nf3 Qd5+=) 8...Qf6 (8...Nf6 9.Nf3 a6 10.0–0+=) 9.Ne2 e5 (9...0–0–0 10.b5 Nce7 11.Nd2=) 10.0–0 0–0–0 11.Ng3 Bd6 12.Ne4 Qh6 (12...Qg6 13.b5 Nce7 14.Re1=) 13.Nd6 (13.Qg4 Rd7+=) 13...Rd6 14.c4 (14.b5 Nce7=) 14...Rg6 15.b5?? (15.Qe2 Qg5 16.f3 Rf6=) 15...Qg5?? (better is 15...Qh3! 16.g3 Rh6–+) 16.g3 Nce7 17.Bc1 (17.Qa4 Kb8=) 17...Qf5 18.Nd2 (18.f4 Nf6=) 18...Nf6 (18...Qd3?! 19.Re1 Qf5 20.c5–/+) 19.Nf3 h5?? (better is 19...Rf8!?=+) 20.Nh4+= Qe6 (20...Qh3!? 21.Ng6 Ng4 22.Qg4 hg4 (22...Qg4? 23.Nh8 h4 24.f4+–) 23.Nh8 Qh8+=) 21.Ng6 Ng6 22.f4 h4? (better is 22...ef4 23.Bf4 Nf4 24.Rf4 Qe3 25.Kg2 Ng4+=) 23.f5+– Qf7 (23...Qe8 24.fg6 hg3 25.hg3 Qg6 26.Kg2+–) 24.fg6 Qg6 25.Kg2 (25.Qf3 hg3 26.Qg3 Qh5+–) 25...hg3 26.hg3 Ng4 (26...Nd7 27.Ra2+–) 27.Rh1 (better is 27.Qf3!? Nf6+–) 27...Rf8 28.Rf1?? (better is 28.Ra2+–) 28...Rh8 29.Rh1 (better is 29.Qf3!? Nf6+–) 29...Rf8 30.Rg1?? (better is 30.Ra2+–) 30...Qh5 (30...Rf2 31.Kh1 Rh2) 31.Rh1= Rf3?? (31...Qg6 32.Ra2 e4+–) 32.Qf3 (32...Ne3 33.Be3 Qf3 34.Kf3 de3 35.Rh7+–; better is 32.Rh5 Rf2 33.Kg1 Nf6 34.Re5 c6+–) 1–0. Slavisa2 – vello01, Live Game Caissa's Web, 2004.

5.a3 Be7 6.Nf3 +=.

5.a3 Nf6 6.Qe2 Be7= 7.c3 (better 7.Nf3!?=) 7...dc3–/+ 8.Bc3 0–0 9.Qc4 c6 10.Be2 Be6 11.Qf4 Nd5 12.Qg3 Nc3 13.Nc3 Bd6 14.Qf3 Nd7 15.Nh3 Ne5 (15...Re8 16.d4–+) 16.Qe4 (16.Qh5 a5 17.b5 cb5 18.Nb5 Re8 19.Nd6 Qd6–/+) 16...Qf6 17.Nf4 Bf5 18.Qd4?? (18.Nh5 Qg6 19.Qd4 Rfd8–+ (19...Qg2?! 20.0–0–0 Rad8 21.Rdg1=+)) 18...Rad8 (better 18...Nf3! 19.Bf3 Qd4–+) 19.Qa7–/+ Bd3 (better 19...Ra8 20.Qe3 Bb4–/+) 20.Nd3+= Nd3 21.Bd3 Be5 (21...Rfe8 22.Kd1 Be5=) 22.0–0 (22.Qe3 Bc3 23.Bh7 (23.dc3? Rfe8 24.Rd1 Re3 25.fe3 Qc3 26.Ke2 Re8–+) 23...Kh7 24.Qc3 (worse 24.dc3 Rfe8 25.0–0 Re3 26.fe3 Qc3–+) 24...Rfe8 25.Kf1+=) 22...Rd3= 23.Qb7?? (better 23.Rae1 Rd2 24.Ne4=) 23...Bc3?? (better 23...Rd2 24.Ra2 Bc3 25.Rd2 Bd2–+) 24.dc3+– Qc3 25.a4 Rfd8 26.a5?? (better 26.Qb6+–) 26...Qa1–+ 27.g3 (27.Ra1?? Rd1 28.Rd1 Rd1) 27...Qa4 28.a6 R3d7 29.h4 (29.Qb6–+) 29...Rb7 30.ab7 Ra8! 31.ba8Q (31.ba8Q Qa8 Combination; 31.ba8R Qa8 Combination; 31.ba8B Qa8 Combination; 31.ba8N Qa8 Combination) 31...Qa8 32.Rc1 Qb7 33.Rb1 (33.Rc4 f5–+) 33...f6 34.Kh2 Qb6 35.Kg1 (35.Rb2 g5–+) 35...c5 36.b5 c4 37.Kf1 (37.Kg2 Qd4 38.Re1 Qd5 39.Kg1 Qb5–+) 37...Kf7 (37...c3 38.Kg2 Qd4 39.Ra1–+) 38.Ke1 (38.Kg2 Qd4 39.Rc1 Qd5 40.Kg1 Qb5–+) 38...Ke6 (better 38...Qa5 39.Kf1 c3 40.Kg2–+) 39.Kd2 (39.Rc1 Qa5 40.Kd1 c3–+) 39...Kd5 (better 39...Qd4 40.Kc1 Qc3 41.Kd1 Qd3 42.Kc1–+) 40.Ke1 (40.Ke2 c3 41.Rd1 Kc4–+) 40...c3 41.Rd1 (41.Kf1 Qd4 42.Rc1 Qd2–+) 41...Kc4 42.Rb1 (42.g4 Qe6 43.Kf1 Qg4–+) 42...c2 (42...Qb7 43.Rd1 c2 44.Rc1 Kd3 45.f3 Qf3 46.Rc2 Kc2 47.g4 Kd3 48.b6 Qe2) 43.Rc1 Kc3 44.f4 Qb5 (44...Qe3 45.Kf1 Qc1 46.Kg2 Qd2 47.Kh3 c1Q 48.h5 Qh1 49.Kg4 Qhd1 50.Kf5 Qd5) 45.g4 Kb2 (better 45...Qb4 46.Rc2 Kc2 47.Ke2 Qe4 48.Kf1 Qf4 49.Kg1 Qg4 50.Kf2 f5 51.Ke3 f4 52.Ke4 f3 53.Kd5 Qd7 54.Ke5 f2 55.h5 f1Q 56.Ke4 Qfd3 57.Ke5 Q7d6) 46.Kd2 Qd5 47.Ke3 (47.Ke2 Qe4 48.Kd2 Qf4 49.Ke2 Kc1 50.g5 Kb2 51.gf6 c1Q 52.fg7 Qfe3) 47…Qc5 (47...Qc5 48.Kd2 Qd4 49.Ke2 Kc1 50.g5 Kb2 51.Kf3 Qd3 52.Kg2 c1Q 53.f5 Qcd2 54.Kg1 Qb1; 47...Kc1 48.Kf2 Kd2 49.Kg1 c1Q 50.Kh2 Qch1 51.Kg3 Qhg2) 0–1. alt20 – dragus (1620), lichess.org, 2015.

5.a3 Nf6 6.Nf3+= a5 7.Nd4 ab4 8.Bc4 =.

5.a3 Nf6 6.Nf3 c5 7.Bb5 Nc6 8.0–0 Be7 9.Re1 0–0 10.d3 Bg4 11.bc5 Bc5 12.c4? (12.Nbd2 Na5 13.Ba4 b5=) 12...a6?? (better is 12...dc3 13.Nc3 Qb6–+) 13.Bc6= bc6 14.Nbd2 Rb8 15.Qc2 Nh5 (15...Qd6 16.h3 Bf3 17.Nf3=) 16.h3 (16.Ne5 Qc8 17.Ne4 Be7 18.Bd4 f6 19.Ng4 Qg4+/–) 16...Be6? (16...Bf3 17.Nf3 Nf4 18.Bc1=) 17.Ne4 Ba7 18.Rab1 Nf4 19.Ba1 (19.Qd2 Ng6 20.c5 Qd7 21.Bd4 Rb1 22.Rb1 f6+/–) 19...Qa5 (19...c5 20.Rb8 Qb8 21.Bb2=) 20.Rb8 (better is 20.Nd4 Qc7 21.Rb8 Rb8 22.Qd2+–) 20...Rb8+= 21.Bd4?? (21.Qd1 c5 22.Ne5–/+) 21...Bd4–+ 22.Nd4 (22.Rb1 Rb1 23.Qb1–+) 22...Qe1 23.Kh2 Rb1 (better is 23...Qf1 24.f3 Nd3–+) 24.Ne6 (24.Kg3 g5! 25.Qc3–+) 24...Ne2 25.Qe2 Qe2 (25...fe6 26.Qg4 h6 27.Qe6 Kh7 28.Qc6+/–) 26.Nd8 f5 27.Ng3 Qf2 28.Nc6 (28.Nh1 Qe1 29.Ne6 Qh1 30.Kg3 Qe1 31.Kf4 Qe6 32.Kf3 Rf1 33.Kg3 Qe1 34.Kh2 Rh1) 28...f4 0–1. elektrooon – nechitanecula, kurnik, 2014.

5.a3 Nf6 6.Nf3+= Be7 7.Bd4 0–0 8.Be2 Bg4 9.Be3 a5 10.b5 Nd5 11.c4 Ne3 12.de3 Qd1 (12...Nd7 13.Nd4 Be6 14.0–0+/–) 13.Bd1 Bf5 14.Nd4 Bb1 15.Rb1 Ba3 16.Bf3 Bc5 (16...a4 17.Bb7 Ra5 18.Kd2+/–) 17.Bb7 Ra7 18.Bd5 (18...a4 19.Kd2+/–) 1–0. marekt (2200) – Klaus Behrmann (2070), ChessWorld.net, 2003.

5.b5 c5 6.Qe2 Be6 7.Bc1 +=.

5.b5 Bc5 6.Qe2 Ne7 7.d3? (7.Nf3 0–0 8.Qc4 Bb6 9.Bd4 Be6+=) 7...b6 (7...0–0 8.Nd2 a6 9.Qh5–+) 8.Ba3? (better is 8.Qe4!? c6 9.Ne2+=) 8...Bb7 (better is 8...0–0!? 9.Bc5 Re8 10.Qd2 bc5 11.Be2–+) 9.Bc5 bc5 10.Nd2 a5 (10...0–0 11.Qh5 Nd5 12.Ne2–+) 11.f3? (11.Qe5 0–0 12.Qc5 g6+=) 11...a4 (better is 11...0–0 12.Kf2 Nd7–+) 12.Qe5–/+ f6 (12...0–0 13.Qc5 Re8 14.0–0–0–/+) 13.Qh5 g6 14.Qh6? (better is 14.Qc5 Nf5 15.0–0–0=) 14...Nf5–+ 15.Qh3 (15.Qf4 Nd7–+) 15...Bc8 (15...Qe7 16.Ne2–+) 16.g4 (better is 16.Kf2–+) 16...Ne3 17.Be2?? (17.Kf2 0–0 18.Qg3–+) 17...Nc2 18.Kf2 Na1 19.Ne4 (19.Qh6 Kf7–+) 19...Nd7 (19...0–0 20.Qh6 Nc2 21.Nh3–+) 20.Qh6 Qe7 21.Nh3 Nc2 22.Rc1 Ne3 23.Nc5 (23.Qf4–+) 23...Nc5 24.a3 (24.Qf4 Ne6 25.Qe4 Rb8–+) 24...Nb3 25.Rc6 Bb7 26.Rf6 Qf6 27.Nf4 Nc1 28.Nh5 Qe7 (28...Qh4 29.Ng3 Qh6 30.h4 Ng4 31.Kf1 Qe3 32.fg4 0–0 33.Bf3 Rf3 34.Kg2 Qf2 35.Kh3 Rg3) 29.Ng7 Kd7 30.Qf4 Qg7 31.Kg3 Ne2 32.Kf2 Nf4 0–1. tuulevalja – cd2, kurnik, 2014.

5.b5 Be7 6.a3 (6.Nf3!?+=) 6...Nf6= 7.Ne2? (7.Nf3 Bc5+=) 7...0–0 (7...c5 8.Ng3–/+) 8.Ng3? (better is 8.Nd4 Nbd7 9.Be2=) 8...Be6 9.Bd3 c5 10.bc6? (better is 10.0–0!?–/+) 10...Nc6–+ (10...bc6?! 11.a4–+) 11.0–0 Ne5 (better is 11...Qb6 12.Qc1 Ne5–+) 12.Be4?? (better is 12.Qe2 Ng6 13.Bg6 hg6 14.a4–/+) 12...Ne4 13.Ne4 Bd5 (better is 13...Qb6!? 14.Bc1 f5 15.Ng3–+) 14.Ng3 Bc6 15.Qh5 f6 (15...Nc4 16.Bc1–+) 16.Nf5 Ng6?? (better is 16...Bc5 17.a4 g6 18.Nh6 Kg7–+) 17.Nd4 (better is 17.Bd4!? Be4 18.Be3 Bc2 19.Nc3=) 17...Bg2!–/+ 18.Re1 (18.Kg2 Nf4 Double attack) 18...Bc6 19.Ne6 Qd5?? (better is 19...Qd7 20.Nc3 Rfe8–/+ (20...Qd2?! 21.Re2 Qd7 22.Rd1=)) 20.Qg4?? (better is 20.Qd5 Bd5 21.Nf8 Bf8 22.d3+=) 20...Rfc8 (20...Qh1) 21.f3–+ Bd7 22.Qe4?? (better is 22.Nc3 Qd6 23.Re3–+) 22...Qe4 23.Re4 (23.fe4?? Rc2 24.Ng7 Rb2–+) 23...Ne5 (23...Rc2 24.Ra2 Kf7 25.Nf4 Bc5 26.d4 Nf4 27.Rf4–+) 24.Be5?? (better is 24.Nd4–+) 24...fe5 (24...Be6?! 25.Bd4 Kf7 26.c3–+) 25.Ng5 (25.Nc3 Be6 26.Re5–+) 25...Bg5 26.Re5 (26.Nc3–+) 26...Bf6 (26...Bf6 27.f4 Rc2–+) 0–1. tuulevalja – artdud, kurnik, 2014.

5.b5 Nf6 6.Nf3 (6.Bc4 a6 7.ba6 ba6 8.Qe2 Be7=) 6...c5 (6...Bg4 7.Be2 Bc5 8.Nh4+=) 7.Bc4 (7.bc6 Nc6 8.Bb5 Qe7 9.Qe2 Qe2 10.Ke2 Bd7 11.Bc6 d3 12.Kd3 Bc6 13.Re1 Be7 14.Bf6 gf6+=) 7...Qe7= 8.Qe2 Qe2 9.Be2 Be7 10.0–0 White castles and improves king safety 10...0–0 Black castles and improves king safety 11.Bc4 The bishop likes it on c4 11...Nfd7 12.Re1 White threatens to win material: Re1xe7 12...Bf6 13.c3 (13.d3 Nb6=) 13...dc3 (13...Nb6 14.Bf1 Na4 15.Ba3 dc3 16.Nc3 Bc3 17.dc3=) 14.Nc3 (14.Bc3 h6=) 14...Nb6 Black threatens to win material: Nb6xc4 15.Re4 (15.Bd3 a6 16.a4 ab5 17.ab5 N8d7=) 15...Nc4 16.Rc4 Black has the pair of bishops 16...Be6 Black threatens to win material: Be6xc4 17.Rc5 (17.Ra4!?+=) 17...b6–/+ 18.Re5 (18.Rc7!? Bd8 19.Rb7+=) 18...Be5 19.Ne5 Nd7 (19...Rd8 20.Rd1 f6 21.Nf3–/+) 20.Ne2 (better is 20.Nc6!?–/+) 20...Ne5–+ 21.Be5 Rac8 (better is 21...Rfe8 22.Ng3 Ba2–+) 22.Re1? Ba2 23.Ng3? Rfe8 24.d4 f6 25.Re2 Rc1 26.Nf1 Bc4 27.f3 Be2 (27...Be2 28.Kf2 Bf1–+) 0–1. Schmidt,Valeska – Ickler,Uwe, Dortmund ABC Anfaenger, 2002.

5.Qe2 Qe7 6.Qe7 Be7 7.Bd4 f6 (7...Nf6 8.c3+=) 8.b5 c5 9.bc6 (9.Be3 Bf5+–) 9...Nc6+= 10.Bb2 (10.Be3 Bf5+=) 10...Bf5 11.d3 (11.c3 Rd8=) 11...Nb4= 12.Na3 Nd5 (12...Rc8 13.Kd1=) 13.Nb5+= Kd7 14.0–0–0 a6 (14...Nh6 15.Nd4+–) 15.Nd4 g6? (better 15...Bg4!? 16.f3 Bh5+–) 16.Nf5+– gf5 17.g3 f4 18.Bg2 Ke6 (18...Nb4 19.a3 (19.Bb7?! Rb8 20.a3 Rb7 21.ab4 Bb4+–) 19...Nc6 20.d4+–) 19.g4 (19.Nh3 fg3 20.hg3 Rf8+–) 19...Rd8 20.a3 b5 21.h4 (21.Nh3 Nh6 22.g5 Ng4+–) 21...b4 (21...Kf7 22.c4 Nb6 23.cb5 ab5 24.Nh3+–) 22.Bd5 (22.ab4 Nb4 23.Nh3 Nh6+–) 22...Rd5 (22...Kd5 23.ab4 Bb4+–) 23.g5 (better 23.ab4!? Bb4 24.Nh3+–) 23...ba3+– 24.Ba1 h5 (24...a2 25.c4 Rd8 26.Nf3+–) 25.g6 (25.Ne2 Bd6+–) 25...Rh6 26.Nh3 Rf5? (better 26...Kf5!? 27.Rhg1 Rd7+–) 27.Rde1 (27.Rhg1 Re5+–) 27...Kd7 28.Rhg1 a2 29.Kb2 Ra5 30.c3 (30.Re4 f3+–) 30...Ba3 (better 30...f5!?+–) 31.Ka2+– Bc1 (31...Be7 32.Kb3+–) 32.Kb1 Bd2 33.Re4 (33.Rd1 Ra1 34.Ka1 Bc3 35.Ka2 Be5+–) 33...Ne7 (33...f5 34.Rd4 Kc7+–) 34.Re7! Ke7 35.g7 (35.g7 Rb5 36.Kc2+–) 1–0. Delboy Smith (1795) – RenoRon (1705), ChessWorld.net, 2016.

5.Qe2 Be7 6.Qe4? Nc6–/+ 7.b5? (7.Bb5 Bd7 8.a3 Nf6–/+) 7...Nb4 (better is 7...Nf6 8.Qf4 Bd6–+) 8.Qd4?? (better is 8.Na3 Nf6 9.Qd4+=) 8...Nc2–+ (8...Nc2 9.Kd1 Nd4–+) 0–1. tuulevalja – leandro0912, kurnik, 2014.

5.Qe2 Be7 6.Nf3 Nc6 7.b5 Na5 (7...Nb4!? 8.Nd4 Nf6+=) 8.Bd4+/– Bg4?? (better is 8...Nf6 9.Bf6 gf6+/–) 9.Bg7+– Be6 (9...Bf3 10.gf3 Qd7 11.Bh8+–) 10.Bh8 1–0. mtrc – sherif9selim, internet, 2002.

5.Qe2 Be7 6.Nf3 Be6? (better is 6...Nf6!?=) 7.Nd4+/– (7.Bd4?! Nf6+=) 7...Bd5? (better is 7...Bd7 8.Nf5! Nf6 9.Ne7 Qe7 10.Bf6 gf6 11.Qe7 Ke7+–) 8.c4+– Nf6 9.cd5 1–0. mtrc – igorbor5, internet, 2002.

5.Ne2 Nc6 6.b5 Ne5 7.Nd4 Bc5? (7...Bd6+/–) 8.Nc6?? (better is 8.Nb3 Qe7 9.Qe2+–) 8...Nc6= 9.bc6 bc6?? (better is 9...Nf6 10.Qe2 Qe7 11.Bf6 gf6=) 10.Bg7+– Bd4 11.Bd4 (better is 11.Bh8 Bh8 12.Nc3+–) 11...Qd4+/– 12.Nc3 Be6 13.Be2 Nf6 14.0–0 Ke7 15.Rb1 Rag8 16.Bf3 Bd5 17.Ne2?? (better is 17.Re1 Kf8 18.Rb7+–) 17...Qf4?? (better is 17...Bf3 18.Ng3 Bd1 19.Nf5 Kd7 20.Nd4 Bh5–+) 18.Ng3 (better is 18.Nf4 Kd6 19.Rb7+–) 18...Kd7 19.Bd5 cd5 20.d3 h5 21.a3 (21.h4 Rh6 22.c4+–) 21...h4= 22.Rb4 Qg5 23.Ne2?? (better is 23.Qf3 hg3 24.fg3=) 23...Qg2 0–1. tuulevalja – sbm77, kurnik, 2014.

5.Nf3 c5 6.Bb5 Nc6 (6...Bd7 7.Qe2 Qe7 8.Na3+=) 7.bc5 Bc5+= 8.0–0 (8.Qe2!? Nge7 9.Bc6 bc6 10.Qe5+=) 8...Nge7= 9.Re1 0–0 10.a4 a6 11.Bc4 Bg4 12.h3 Bf3 13.Qf3 (worse is 13.gf3 Ng6 14.Re4 Nce5–+) 13...Ng6 14.Qh5 Nge5?? (better is 14...Qb6 15.Ba3 Ba3 16.Ra3 Qc7+=) 15.Re5+/– Ne5 16.Qe5 Qb6 17.Ba3 Ba3 18.Na3 Qb2 19.Qe1 Rae8 (better is 19...b5!? 20.Bb3 d3+/–) 20.Qb1+– Qb1 21.Rb1 (21.Nb1?! Re1 22.Kh2 Rc8+/–) 21...Re7 22.Bd5 Rb8 23.f4 (23.Rb4 d3 24.cd3 b6+–) 23...Re2 (23...Rd7 24.Bf3+–) 24.Rb7 (24.Kf1!? Re7+–) 24...Rb7 25.Bb7 Rd2 (25...Re1 26.Kf2 Ra1 27.Nc4 Ra4 28.Ne5+–) 26.a5 d3 27.cd3 (27.Ba6?! dc2 28.Nc2 Rc2=) 27...Rd3 28.Nc4 Rd7 (28...Rd4 29.Ba6 Rf4 30.Bb5+–) 29.Ba6 Ra7 30.Bb5 Rb7 31.Nd6 Ra7 32.a6 Kf8 33.Kf2 g6 34.Ke3 Ra8 35.Ke4 Ke7 36.Nc4 f6 (36...Kf6 37.g4+–) 37.Nb6 (37.Kd5 Kd8+–) 37...Rb8 38.a7 Rb6 39.a8Q Rb5 40.Qa7 Kd6 41.Qa3 (41.Qa6 Kc5 42.Qf6 Rb4 43.Ke5 Rb5+–) 41...Kc6 42.Qc3 Rc5 (42...Kd7 43.Qf6 Rb4 44.Kd3+–) 43.Qf6 Kb5 44.Qf7 Rc4 (44...Rh5 45.Qb3 Ka6 46.g4+–) 45.Qc4! Kc4 46.g4 h6 (46...Kc5 47.Ke5 Kc6 48.Ke6+–) 47.h4 Kc5 48.Ke5 Kc6 49.Ke6 1–0. mtra – pokli, internet, 2002.

5.Nf3 Bg4 6.Bd4?? (better is 6.Be2 Qe7 7.Nd4 Qb4 8.Bc3 Be2 9.Qe2 Qe7 10.Nf5 Qe2 11.Ke2+=) 6...Bf3–+ 7.Qf3 Qd4 8.Nc3 (8.c3 Qe5 9.Be2 Nc6–+) 8...Nc6 (8...Bb4?! 9.Qb7 Bc3 10.Bb5 Kf8 11.Rd1–/+) 9.Bb5 Nge7 (9...0–0–0 10.Bc6 Qd2 11.Kf1 bc6 12.Qc6–+) 10.0–0 (10.Bc6 Nc6 11.b5 Na5–+) 10...0–0–0 (10...Qd2?! 11.Rad1 Qh6 12.Rfe1+=) 11.Qh3 f5 12.Rfe1 (12.Bc6 Nc6 13.b5 Ne7–+) 12...g6 13.Bc6 Nc6 (13...bc6?! 14.Rad1–+) 14.b5 Nb4 15.Rac1 Bc5 16.Qg3 (16.Ne4 Bb6–+) 16...Bd6 (better is 16...Qd2!? 17.Red1 Qh6 18.Qe5–+) 17.Qe3 Qe3 18.de3 (18.fe3 Be5 19.d4 Rd4 20.ed4 Bd4 21.Kf1 Bc3–+) 18...Be5 19.Na4 Na2 20.Ra1 (20.Rcd1–+) 20...Ba1 21.Ra1 Nc3! 22.Nc5?? (22.Nc3 Rd2 Combination) 22...Rd1 (22...Nb5 23.c4 Nc3 24.Kf1–+) 23.Rd1 Nd1 24.h3 Re8 25.c4 (25.Kf1 Nc3–+) 25...b6 (25...Nb2 26.Nb3–+) 26.Na6 (26.Nb3 Nb2–+) 26...Nb2 27.Kf1 (27.c5 bc5 28.Nc5 Re5–+) 27...Nc4 28.Ke2 (28.Nb4 Nd6–+) 28...Nd6 29.f3 Nb5 30.g4 (30.Nb4 Na3 31.Nd5 b5–+) 30...Nd6 (30...f4!? 31.e4 Nd4 32.Kd3 Nf3 33.Nb4–+) 31.gf5 Nf5 32.e4 Nd6 33.Ke3 c5 34.Kd3 Kb7 35.Nb4 cb4 36.Kc2 a5 37.Kb3 Ka6 (37...Rc8 38.Ka2 Rc2 39.Kb1 b3 40.h4 Nc4 41.e5 Nd2 42.Ka1 Ra2) 38.Ka4 (38.e5 Re5 39.Kc2 Rc5 40.Kd2 b3 41.Ke2 b2 42.Ke3 Nf5 43.Ke2 b1Q 44.f4 Rc2 45.Kf3 Qb3 46.Ke4 Re2) 38...b5 (38...Rc8 39.Kb3 Rc3 40.Kb2 Nc4 41.Kb1 b3 42.h4 Rf3 43.e5 Rf1) 39.Kb3 Rf8 (39...Rc8 40.h4 Rc3 41.Kb2 Nc4 42.Kb1 b3 43.e5 Rf3 44.e6 Rf1) 40.e5 Nc8 (40...Rf3 41.Kc2 b3 42.Kd2 Nc4 43.Ke2 Re3 44.Kf2 b2 45.Kf1 b1Q 46.Kg2 Qc2 47.Kf1 Rb3 48.e6 Rb1) 41.e6 Ne7 42.f4 Rf4 43.h4 (43.Kc2 Rf2 44.Kd3 b3 45.Ke3 Rh2 46.Kf4 b2 47.h4 b1Q 48.h5 Qf5 49.Kg3 Rh3 50.Kg2 Qf3 51.Kg1 Rh1) 43...Rh4 (43...Rf2 44.h5 Nf5 45.hg6 Nd4) 44.Ka2 (44.Kc2 Rh2 45.Kd3 b3 46.Kd4 b2 47.Ke4 b1Q 48.Kf4 Qf5 49.Kg3 Rh3 50.Kg2 Qf3 51.Kg1 Rh1) 44...Rf4 (44...Rh2 45.Kb1 Nd5 46.Kc1 b3 47.Kd1 b2 48.e7 b1Q) 45.Kb3 (45.Kb2 Rf2 46.Kb1 Nd5 47.Kc1 Nc3 48.e7 b3 49.e8Q b2) 45...Rf3 (45...Rc4 46.Ka2 a4 47.Kb2 a3 48.Kb3 Rc3 49.Ka2 Rc2 50.Ka1 b3 51.Kb1 b4 52.Ka1 Rc1) 46.Ka2 (46.Kc2 Rf2 47.Kd3 b3 48.Ke3 Rg2 49.Kf3 Rg5 50.Ke4 b2 51.Kf4 Rf5 52.Kg4 b1Q 53.Kh3 Qg1 54.Kh4 Rh5) 46...h5 (46...Rf2 47.Kb1 Nd5 48.Kc1 Nc3 49.e7 b3 50.e8Q b2) 47.Kb2 (47.Kb1 Rf2 48.Kc1 b3 49.Kb1 Nd5 50.Ka1 Nc3 51.e7 b2) 47...h4 (47...Rf2 48.Kb1 Nd5 49.Kc1 Nc3 50.e7 b3 51.e8Q b2) 48.Kc2 (48.Kb1 h3 49.Kb2 Rf2 50.Kb3 Nf5 51.e7 Nd4) 48...h3 49.Kb2 h2 (49...Rf2 50.Kb3 Nf5 51.e7 Nd4) 50.Ka2 (50.Kc2 h1Q 51.Kb2 Qg2 52.Kb1 Rf1) 50...h1Q 51.Kb2 Qh2 52.Ka1 (52.Kb1 Rf1) 52...Rf1 0–1. Nautiluschess – jayk, ICS blitz, 2000.

5.Nf3 Bg4 6.Be2+= Bf3 7.Bf3 c6 8.Qe2 Qe7 (8...Be7 9.0–0+/–) 9.Qe7 (9.Bd4 Nd7+–) 9...Be7+/– 10.Bd4 Bf6 11.Bf6 Nf6 12.0–0 0–0 13.Nc3 Rc8 (13...Rd8 14.Rad1+/–) 14.a4 Nbd7 15.a5 (15.Rfe1 Re8+/–) 15...Ne5 16.Be4 a6 (16...Rd8 17.d3+/–) 17.d3 Re8 18.f4 Neg4 19.Rf3 (19.Rfe1 Rad8+/–) 19...Rad8 20.h3 White gets the initiative 20...Nh6 21.g4 Ne4 22.de4 f6 23.Rd3 Nf7 24.Rad1 Rd3 25.Rd3 Rd8 (25...Kf8 26.Kf2+–) 26.Na4 Rd3 27.cd3 g5 (27...Nd8 28.Nc5+–) 28.f5 (28.Nc5 gf4 29.Nb7 Ng5+–) 28...Ne5 (28...Nd6 29.Kf2+–) 29.Nc5 Nf3 30.Kf2 Nd4 31.Ke3 Nc2 32.Kd2 Nb4 33.Kc3 (33.Kc3 Na2 34.Kb2+–; worse is 33.Nb7 c5 34.Nc5 Nc6+–) 1–0. Budrewicz,H – Roczniak,Jan, corr Poland, 1967.

5.Qe2 Be6

6.a3 Nc6 7.b5 Na5 8.Qe5 =.

6.a3 Nf6 7.g3 (7.Nf3!? c5 8.Qb5 Nc6 9.Qb7+=) 7...Qd5 8.f3 (8.Nf3!? Nc6 9.b5=) 8...c5 9.Qb5 (9.Bg2 Qf5 (worse is 9...cb4 10.f4 d3 11.Bd5 de2 12.Bb7+/–) 10.d3 cb4 11.Bd4 Nc6+=) 9...Nbd7 10.d3 (better is 10.c4!? Qc6 11.Qc6 bc6 12.f4–/+) 10...a6–+ 11.Qa5 b6 12.Qa4 b5 13.Qa5 Bd6 (better is 13...Ne5 14.Be2 cb4 15.ab4 Nc6–+) 14.a4?? (14.bc5 Bc5 15.Bg2 Ng4–+) 14...cb4 (better is 14...Qe5 15.Kd1 Bc7–+) 15.ab5–/+ 0–0 16.Nd2?? (16.ba6 Nc5 17.a7 Ng4–/+) 16...Rfe8 17.ba6+= Qc6 18.Bd4? Qc2 19.Be2+= Bd5 20.Qa4? Re2 21.Ne2+= Qd3 22.a7 Bf3 23.Nf3+= Qf3 24.Rf1 Qb7 25.Rd1?? Ne4 26.Qb3 Nef6?? 27.Bf6+– Nf6 28.Rd6 Qa7 29.Qb4 Qa1 30.Rd1 Qe5 31.Rf4 Re8 32.Rd2 Qa1 33.Rd1 Qa7?? 34.Rb1 Qg1 35.Kd2?? Qe3–+ 36.Kc2 Qe2 37.Kb3 Nd5 38.Qa4 Re3 0–1. Feiertag,Manfred (1770) – Baer,Cy (1895), RSS4D basic–16, 2008.

6.Qe5 Nc6–/+ 7.Bb5 Nge7 (7...Bb4? 8.Bc6 Kf8 9.Bf3+–) 8.Bc6 (better is 8.Qd4 Qd4 9.Bd4–/+) 8...Nc6–+ (8...bc6?! 9.Ne2 Qd5 10.Bd4=) 9.Qe4 Bb4 10.Nf3 Bc5 11.Ng5?? (11.0–0 0–0–+) 11...Qf6 (better is 11...Qg5 12.h4 Qh5–+) 12.Ne6 Qe6 13.Qe6 fe6 14.0–0 0–0–0 15.Re1 Rde8 16.g3 Rhf8 17.d3 Kd7 18.a4 e5 19.Ba3 Ba3 20.Na3 Na5 21.Nb5 a6 22.Na3 c5 23.Nc4 (better is 23.Nb1!?–/+) 23...Nc4–+ 24.dc4 Re7 25.Re4 Kd6 26.Rae1 (26.f4 Rfe8 27.Rf1–+) 26...Rf3 27.Kg2 Ra3 28.f4 Ra4 29.fe5 Kd7 30.e6?! (30.Rh4 Rc4 31.Re2 h6–+) 30...Kd6 31.Re5 (31.c3 dc3 32.Rd1 Kc6–+) 31...Rc4 32.Kh3 (32.R5e2–+) 32...Rc2 33.Rf5 Re6 34.Rf7 (34.Rb1 Re7 35.Rf8–+) 34...Re1 (34...Re1 35.Rf3 c4–+) 0–1. tuulevalja – dirken, kurnik, 2014.

6.Nf3 Bb4? 7.Qb5+– Nc6 8.Nd4 a6?? (better is 8...Qe7 9.Kd1 Kf8 10.Qb7 Re8+–) 9.Nc6 (9.Ne6?! Qe7 (9...ab5?? 10.Nd8 Rd8 11.Bg7+–) 10.Qb7 Qe6 11.Be2 Rb8 12.Qb8 Nb8 13.Bg7 Qg6 14.Bh8 Qg2+/–) 9...ab5 (9...bc6 10.Qb4 Nf6 11.Qf4+–) 10.Nd8 Rd8 (10...Nf6 11.Ne6 fe6 12.Bb5 Ke7 13.a3+–) 11.Bg7 (11.Bb5?! Kf8+=) 11...Bc5 (11...f6 12.Bh8 (< 12.Bb5 Kf7 13.Bh8 Ne7+–) 12...Kf7 13.a3+–) 12.Bh8 (12...c6 13.Nc3+–) 1–0. marekt (2145) – Milan van Dijk, ChessWorld.net, 2003.

6.Nf3 Bb4? 7.Bd4?! Nf6=.

6.Nf3 Bb4 7.Nd4 Qe7 8.Ne6 (better is 8.Nf5 Bf5 9.Bg7 Bc2 10.Bh8+/–) 8...Qe6?? (better is 8...fe6 9.Qe4 c6+/–) 9.Qe6 fe6 10.Bg7 Nd7 11.Bh8 0–0–0 (11...Ngf6 12.c3 Bd6 13.g3+–) 12.c3 (12.a3 Bd6+–) 12...Bc5 13.d4 Bb6 14.Bg7 Ne7 15.Bh6 (15.a4 Nf5 16.a5 Bc5 17.dc5 Ng7+–) 15...Nf5 16.Bd2 e5 17.Bd3 Rf8 18.g4 (18.Bf5 Rf5 19.Be3 ed4 20.cd4 Rd5+–) 18...Nh4 19.Bh6 Rf6 20.g5 Re6 (20...Rf7 21.Bc4 Re7 22.d5+–) 21.d5 (21.Bh7 ed4 22.Kd1 dc3 23.Nc3 Bf2+–) 21...Re7 22.Be4 Nc5 23.Nd2 Rf7 24.0–0 Ne4 25.Ne4 Nf3 (25...Rf4 26.Nf6+–) 26.Kg2 1–0. vik – VernDigger, internet, 2001.

6.Nf3 c5 7.c3 dc3 8.Nc3 cb4 9.Qb5 Qd7 10.Ne4 =.

6.Nf3 Nc6!? 7.b5 d3 8.Qd3 Nb4 9.Qd8 Rd8+=.

5.Nf3 Bb4

6.c3 dc3 7.Bc3 Bc3 8.Nc3 Qe7 (8...Nc6 9.Bb5 Nge7 10.0–0=+) 9.Qe2 (9.Be2 Nf6=+) 9...Qe2 (9...Nf6 10.Qe3=+) 10.Be2 Nf6 11.Bb5 (11.Nb5 Na6=+) 11...c6 12.Ba4 (12.Be2 0–0–/+) 12...0–0–/+ 13.0–0 b5 (13...Na6 14.Rfb1–/+) 14.Bb3 Nbd7 15.Rfe1 Bb7 (15...Ba6 16.Re7–/+) 16.Re7=+ a6 (16...Rae8 17.Rae1=) 17.Rae1 (better 17.Ng5+–) 17...c5=+ 18.Ne5 f7 draws heavy fire 18...Ne5 19.R7e5? (better 19.R1e5 Rae8 20.Bf7 Rf7 21.Re8 Ne8 22.Re8 Rf8 23.Re7=+) 19...c4–+ 20.Bc2 Rfe8 (20...Rad8 21.R1e2–+) 21.Re8–/+ Re8 22.Re8 Ne8 23.Be4 (23.f3!?–/+) 23...Be4–+ 24.Ne4 Nf6 25.Nf6 (25.Nc5 b4 26.Kf1 Nd7–+) 25...gf6 26.Kf1 Kf8 27.Ke2 Ke7 28.Ke3 Kd6 29.Kd4 f5 30.g3 h5 31.d3 (31.f3–+) 31...cd3 32.Kd3 Kd5 33.h3 (33.f3 b4 34.Kc2 Kc4–+) 33...f6 34.f3 (34.h4 b4–+) 34...a5 (better 34...f4 35.gf4 a5–+) 35.g4 (35.Kc2–+) 35...fg4 36.fg4 hg4 37.h4 (37.hg4 Ke5–+) 37...g3 38.Ke3 Ke5 39.h5 Kf5 40.h6 Kg6 41.h7 Kh7 42.Kf3 Kg6 43.Kg3 Kf5 44.Kf3 Ke5 45.Ke3 f5 46.Kf3 f4 47.Ke2 Ke4 48.Kf2 f3 49.Ke1 Ke3 50.Kf1 (50.a3 f2 51.Kf1 b4 52.ab4 ab4 53.Kg2 b3 54.Kg3 f1Q 55.Kh4 Kf4 56.Kh5 Qa6 57.Kh4 Qh6) 50...f2 51.Kg2 (51.a3 b4 52.ab4 ab4 53.Kg2 b3 54.Kh3 f1Q 55.Kg4 b2 56.Kg5 b1Q 57.Kh6 Qf6 58.Kh5 Qbf5) 51…Ke2 (51...Ke2 52.Kg3 f1Q 53.Kg4 Qf6 54.a3 Ke3 55.a4 Qg6 56.Kh4 Kf4 57.ab5 Qg4) 0–1. invictus31 – MrBelka (1610), lichess.org, 2019.

6.c3 dc3 7.Nc3 Bg4 (7...Nf6 8.Qa4 Nc6 9.Bb5–/+) 8.Bc4 (8.Qa4 Nc6 9.Ne5 Bc3 10.Bc3 Qe7+=) 8...Nh6 (8...Qe7 9.Ne2 Nf6 10.Qb3=+) 9.0–0 (9.Qa4!? Nc6 10.Ne5 Bc3 11.Bc3= (< 11.dc3 0–0 12.Ng4 Ng4–/+)) 9...0–0=+ 10.Nd5 Bd6 11.Ne3 Bf3 12.Qf3 Qh4 (12...c6 13.Rfe1=+) 13.h3 (better is 13.g3!? Qh3 14.Qb7+=) 13...Nd7=+ 14.Bb3 Qf4 15.Qf4 Bf4 16.Nd5 Bg5 (better is 16...Bd6–/+) 17.Nc7+= Rac8 18.Nd5 Nf5 19.f4 Bf6 20.Nf6 Nf6 21.Rad1 Ne4 22.d4?? (better is 22.Rfe1 Nc5 23.Bc2+/–) 22...Ne3–/+ 23.Rfe1 Nd1 24.Bd1 Nd2 25.Bg4 Rc2–+ 26.Ba3 Rd8 27.Bf5 Ra2 28.Bb4 g6 29.Bd2 Rd2 30.Be4 R8d4 31.Bb7 Rf4 32.Ra1 h5 33.Ra7 Rd1 34.Kh2 h4 35.Ba6 Rf2 36.Ra8 Kg7 37.Bb7 Rff1 38.g3 Rd2 39.Bg2 0–1. chessleon – michael709, internet, 2007.

6.Bd4 Nf6 7.Bb5 c6 8.Qe2 Qe7 9.Bf6 gf6 10.Bd3 =.

6.Bd4 Nf6 7.Bb5 c6 8.Qe2 Kf8 9.Bd3 =.

6.Bd4 Nf6 7.c3 Ba5 8.Be2 Bg4?? (8...0–0!?=) 9.0–0?? (better is 9.Bf6 Qf6 10.Qa4 Nc6 11.Qg4+–) 9...0–0 10.Ne1 (better is 10.Qa4!? Qe8 11.Qa5 Qe2 12.Bf6 gf6 13.Re1+/–) 10...Be2=+ 11.Qe2 Re8 (11...Nc6 12.Be3=+) 12.Qd1 (better is 12.Bf6 gf6 13.Qg4 Kh8 14.d4+/–) 12...Nc6=+ 13.Be3 Ne4 14.Nd3?? (better is 14.Qb3=+) 14...Qd3–+ 15.Re1 h6 16.Bf4 Rad8 17.Re3 Qd5 18.d3 (18.Qg4 Nf6 19.Qh3 Re3 20.fe3 Qb5–+) 18...Nc3 19.Nc3 Bc3 20.Rc1 Re3 21.Be3 Qd3 22.Qd3 Rd3 23.Re1 (23.Kf1 Be5 24.h3–+) 23...Be1 (24.Kf1 Bb4–+) 0–1. valpa – Handkaes, HCL–C2339 playchess.de, 2003.

6.Bd4 Nf6 7.Be2 0–0 8.0–0 Nc6 9.Bb2 Bf5 10.a3 Bd6 11.h3 h5 (11...Re8 12.Bb5+=) 12.d3 Qe7 13.Re1 Rfe8 14.Nbd2 Rad8 15.Bf1 Qd7 16.Re8 Re8 17.Bf6 gf6 18.Nh4 Be5 (18...Bg6!?=) 19.Rb1+/– (worse is 19.Qh5 A) 19...Ba1? 20.Nf5 (worse is 20.Qf5 Qf5 21.Nf5 Nd4 22.Nd4 Bd4+=) 20...Ne5 21.g4+–; B) 19...Bg4 20.hg4 Ba1+=; 19.Nf5 Qf5 20.Rb1 b6+=) 19...b6 20.Qh5 Be6 21.Ne4 (21.Nhf3+/–) 21...Nd4? (21...Kg7 22.Nf3 Qe7 23.Ne5 fe5+/–) 22.Qd1?? (better is 22.c3 Nf5 23.d4+–) 22...f5= 23.Nd2 Kf8 24.Nhf3+/– f6 25.Ne5 fe5 26.Nf3 Nf3 27.Qf3 c5 28.Re1 Bd5 29.Qh5 e4 30.de4 Re4 31.Re4 Be4 32.Bd3! c4? 33.Be4 fe4 34.Qe5 Qe7? 35.Qb8?? Qe8?? 36.Qa7 Qd8 37.Qa4 Qd1 38.Kh2 c3? 39.Qe4 Qd6 40.g3 Qa3 41.Qf5 Ke8 42.Qe5 Kd7 43.Qd4 Kc6 44.Qc4 Kb7 45.Qd5 Ka6 46.Qd3 Kb7 47.Qe4 Ka6 48.Qd3 Kb7 49.f4 Qb2 50.g4 b5 51.g5 b4 52.Kg3 b3 53.cb3 Qb3 54.g6 Qb2 (54...Qb2 55.Qd5 Kc7+–). Fournier,Frederic – marc666, Active (3/0), 2005.

6.Bd4 Bg4?? 7.Bg7 Qe7 8.Qe2 Qe2 (8...Nc6 9.Bh8 Bf3 10.gf3+–) 9.Be2 Nd7 10.Bh8 f6 11.a3 Bc5 12.Nc3 0–0–0 13.Ne4 Be7 14.Nd4 Be2 15.Ke2 Nh6 16.Bg7 Nf7 17.Nf5 Bc5 (17...Re8 18.Kf3+–) 18.Nc5 Re8 19.Ne3 Nc5 20.Bf6 Nd6 21.d3 Nd7 22.Bb2 Nf5 23.g4 Nh4 24.Raf1 Nc5 (24...Ng2 25.Kf3 Ne3 26.fe3+–) 25.f4 Na4 26.Bd4 c5 27.Be5 Ng6 28.Bg7 Re7 29.Bf6 Re8 30.f5 Nf8 31.Bg7 Nd7 32.f6 Rg8 (32...Rd8 33.f7 Nf8 34.Rf5+–) 33.Kd2 Nab6 34.g5 Kd8 35.Nf5 Nd5 (35...Kc7 36.f7 Rd8 37.Ne7+–) 36.Re1 c4 37.f7 Rg7 38.Re8 Kc7 39.Ng7 c3 40.Kc1 Nf4 41.f8Q Nf8 42.Rf8 Ng6 1–0. orane (2180) – BANZAI, Live Game Caissa's Web, 2004.

6.Bd4 Bg4?? 7.Bg7+– Bf3 8.Qf3 Nc6 9.Bh8 Nd4 (9...Qe7 10.Be2 0–0–0+–) 10.Qe4 Kf8 11.Bd4 c5 (11...Qe7 12.Qe3+–) 12.Be3 Qd7 13.Qh7 Rd8 14.a3 +–. marekt – Axel van Dijk, ChessWorld.net, 2003.

4.Nf3 Bg4

5.h3 Bf3 6.gf3 de3 7.de3 Bb4 8.Nd2 Nf6 +=.

5.h3 Bf3 6.Qf3 Nc6 7.ed4 Nd4 8.Bd4 ed4 9.Qb7 +/–.

5.h3 Bf3 6.Qf3 de3 7.Qe3 f6 +=.

5.h3 Bf3 6.Qf3 g6? 7.Qb7 Nd7 8.Bb5 Rb8 9.Bd7 Kd7 10.Qd5 Bd6 11.ed4 c6? (11...Qe8 12.a3 Nf6 13.Qc4+–) 12.Qc4 (better is 12.Qf7 Qe7 13.Qe7 Ne7 14.de5 Bb4 15.Bd4+–) 12...Rb4 13.Qd3?? (better is 13.Qf7!? Qe7 14.Qe7 Ne7 15.Bc3+–) 13...Rb2 (better is 13...e4 14.Qc3 Qb8–/+) 14.de5+= Kc7 15.ed6 Qd6 16.Qc3 Qe6 (16...Rc2! 17.Qa5 Kc8+=) 17.Kd1 Rb6?? (17...Qf6 18.Re1+/–) 18.Re1 (18.Qh8 Qf6 19.Qf6 Nf6+–) 18...Qf5?? (better is 18...Qf6+–) 19.Re7 (better is 19.Qh8 Rb8 20.Nc3+–) 19...Ne7–/+ 20.Qh8 Qf2 21.Qe5 Kd8 22.Qe2? (better is 22.c4!?–/+) 22...Qg1–+ 23.Qe1 Qg2 24.Nc3 Qf3 25.Ne2 Qh3 26.c3 Qf5 27.Nd4 (27.a4 Rb2 28.Nd4 Qd3–+) 27...Qg4 (27...Rb1!? 28.Rb1 Qb1 29.Ke2 Qa2 30.Qg3–+) 28.Kc2 Kc7?? (better is 28...c5 29.Qe2 Qe2 30.Ne2 h5–+) 29.Qe5?? (better is 29.Qe7 Qd7 30.Re1 Qe7 31.Re7 Kb8 32.Rf7+–) 29...Kb7?? (better is 29...Kd7 30.Re1 Nc8=) 30.Qe7+– Ka6 31.Qa3 (better is 31.Re1 Rb5 32.Qc7 Qg5+–) 31...Kb7 32.Qe7 Ka6 33.a4 (better is 33.Re1 Rb5 34.Qc7 Qg5+–) 33...Qc8? (better is 33...Rb7 34.Qe8 Qd7 35.Qe2 Kb6+–) 34.a5 Rb7 35.Qc5 Qb8 (35...Qd7 36.Qc4 Rb5 37.Nc6 Qf5 38.Kc1 Kb7+–) 36.Qc4 (36.Qc6 Rb6 37.ab6) 36...Rb5 37.Nc6 (37.Qc6 Qb6 38.ab6 Ra5 39.b7) 37...Qb6 (37...Qd6 38.Nb4 Kb7 39.Qb5 Kc7 40.Nd5 Kc8 41.Qe8 Kb7 42.Rb1 Qb6 43.Qd7 Kb8 44.Qc7 Ka8 45.Qc8 Qb8 46.Rb8) 38.Nb4 Kb7 39.ab6 Kb6 (39...Rf5 40.Qc6 Kb8 41.ba7) 40.Qc6 1–0. guest31 – guest458, ICC, 1999.

5.h3 Bh5 6.ed4 (6.Be2 Qe7 7.0–0 Qb4+/–) 6...e4 7.Qe2 Qe7 8.Qb5 c6 9.Qh5 ef3 10.Qe5 (10.Kd1 Qb4 11.Qe5 Qe7+/–) 10...Qe5 (10...fg2 11.Bg2 Nd7 12.Qe7 Ne7 13.Na3+/–) 11.de5 fg2 12.Bg2 Bb4 13.a3 (13.c3 Be7+/–) 13...Ba5 14.Nc3 (14.0–0 Nd7+/–) 14...Nd7 15.Ne4 0–0–0?? (better is 15...Bc7 16.d4 Ne7+/–) 16.Nd6+– (16.Nd6 Kb8 17.Nf7+–) 1–0. MT – guest629, ICC, 2004.

3.Nf3 a5

4.a3 Qd6 5.Bd4 ab4 6.ab4 Ra1 7.Ba1 Qb4 8.Nc3 h5 9.Qb1 Na6 10.e3 Rh6 11.Bb5 c6 12.Ba4 Nf6 13.0–0 h4 14.Qb4 Nb4 15.h3 Bd7 16.Ne2 b5 17.Bb3+= c5 18.Ng5 e6 19.c4+= Rh5 20.f4 Be7 21.d4 bc4–/+ 22.Bc4 Nc2 23.f5?? Rg5–+ 24.fe6 fe6 25.Nf4 Ne3 26.Ne6 Rg2 27.Kh1 Bc6 28.Nc7 Kd7 29.d5 Bb7 30.Ne6 Nfd5 31.Bd5 Bd5 32.Nf4 Rf2 (32...Rf2 33.Nd5 Rf1 34.Kh2 Bd6 35.Be5 Be5 36.Nf4 Bf4) 0–1. Trkn – Robin Ketteridge, itsyourturn.com, 2000.

4.ba5 Nc6 5.e3 de3 6.fe3 Ra5 7.Be2 (7.Bc3 Rh5=) 7...Bg4 (7...e5 8.0–0=) 8.0–0 (8.Bc3 Ra8=) 8...Bf3 (8...Nf6 9.Na3=) 9.Rf3 (9.Bf3 Ra6+=) 9...e5 10.a4 e4 (10...Bd6 11.Bb5+=) 11.Rf4+– Nf6? (better 11...f5!?+–) 12.Bf6+– gf6 13.Re4 Be7 (13...Re5 14.Bf3+–) 14.Bb5 f5 15.Bc6 (15.Rd4 Bd6+–) 15...bc6 16.Rf4 (16.Rd4 Qa8 17.c3 Bd6+–) 16...Bd6 17.Rd4 (17.Rf2 Qf6 18.c3 Qe5+–) 17...Qf6 (17...c5 18.Rd3 Qh4=) 18.Qf3 (better 18.Nc3+–) 18...c5= 19.Qc6 (19.Re4 Kd8 20.Ra3 Bh2 21.Kh1 Be5=) 19…Ke7 ½–½. DEFFM – GuestJQGCc, freechess.org, 2016.

4.b5 d3 5.ed3 e6 6.Be2 Nf6 7.0–0 Be7 8.Nc3 0–0 9.Re1 c6 10.d4 cb5 11.Bb5 Nc6 12.Ne4 a4 13.c4 a3 14.Bc3 Bb4 15.Rb1 Bc3 16.dc3 Ne4 17.Re4 Na7 18.Ba4 f5 19.Re1 Nc6 20.c5 Na5 21.Ne5 Nc4 22.Nc4 f4 23.Nb6 Ra7 24.Bb3 Rf6 25.d5 ed5 26.Qd5 Kh8 27.Qd8 (27...Rf8 28.Qf8) 1–0. orane – DetonateNuclear, caissa.com, 2006.

4.b5 Qd5 5.Nd4+/– e5 6.Nf3 Qb5 7.Be5 f6 8.Bc7+– Qb2 9.Nc3 Nc6 10.Na4 Qb4 11.Nb6 Ra7 12.Nc8 (12.Nc8 Ra8 13.c3+–) 1–0. Wall,Bill – Thruster, internet, 2003.

4.b5 Bd7 5.d3 (5.a4!?+=) 5...Bb5= 6.Nd4 Nc6?? (better 6...Bd7=) 7.Nb5+– Nf6 8.g3 Rc8 (8...e5 9.Bg2+–) 9.Bg2 e6 10.Bc6 (10.Nd2 Be7+–) 10...bc6 11.Na7 (better 11.N5a3+–) 11...Rb8 (11...Ra8 12.Nc6 Qd5 13.0–0 Qc6 14.Bf6 gf6 15.Nd2+–) 12.Nc6 (better 12.Bf6 gf6 13.0–0+–) 12...Qd7?? (better 12...Qd5 13.Nb8 Qh1 14.Kd2 Qb7 15.Bf6 gf6+–) 13.Nb8+– Qb5 14.Bf6 gf6 15.Nc3 (15.c3 Qb8 16.Qa4 Kd8+–) 15...Qb8 16.Rb1 Qa7 17.0–0 Bb4 18.Nb5 Qb6 19.c4 0–0 20.a3 Bc5 21.d4 Rd8 (21...Be7 22.e3+–) 22.e3 (better 22.dc5 Qb8 23.Qa4 Qa8+–) 22...Be7 23.Qg4 Kh8 24.Kh1 (better 24.Qf3 c5+–) 24...Qc6 25.Kg1 Rg8?? (25...Qb6 26.Qe4 c5+–) 26.Qf4+– Bd6 (26...Bd8+–) 27.Nd6 (27.Qf6 Rg7 28.Nd6 Qa8 29.Nf7 Kg8 30.Nh6 Kh8 31.Rb7 Qg8 32.Ng8 h6 33.Rc7 Kg8 34.Qg7) 27...Qd6 28.Qf6 (28.Qf6 Rg7 29.Rb8 Qd8 30.Rd8) 1–0. GuestPXKS – GuestCBYT, freechess.org, 2017.

4.Bd4 ab4 5.e3 Nf6 6.a3 e6 7.ab4 Ra1 8.Ba1 Bb4 9.c3 Be7 10.d4 0–0 11.Bd3 b6 12.0–0 Bb7 13.Nbd2 Na6 14.Qe2+= Qc8 15.Bb2 c5 16.e4 cd4 17.cd4 Nb4 18.Rc1 Qa8 19.Ra1 Qc8 20.Bb5 h6 21.Ra7 Qb8 22.Ra4 Qf4? 23.Bc3 Nc2+/– 24.d5 ed5 25.ed5 Bb4 26.Bb4 Nb4+/– 27.Qe7 Rc8 28.Qb7 Rc1 29.Bf1 Qd6 30.h4 Ng4 31.Ne4 Qd5 32.Qb8 Kh7 33.Rb4 Rf1 34.Kf1 Qd3 35.Ke1 (35.Ke1 f6 36.Qb6+–) 1–0. Trkn – Error, itsyourturn.com, 2001.

4.ba5 Ra5

5.Bd4+/– Nc6 6.Bb2 Bg4 7.d3 f6 8.Nbd2 e5 9.e4 Bc5 (9...Qa8 10.Qb1+=) 10.Be2 Nge7 11.0–0 0–0 (11...Ra7 12.c3+/–) 12.h3 (12.Ne5 Be2 13.Nc6 Nc6 14.Qe2 Nd4+–) 12...Bh5 (better is 12...Bf3!? 13.Nf3 f5+=) 13.Ne5+– Be2 14.Nc6 Bd1 15.Nd8 Rd8 16.Rfd1 (16.Rad1?! Ra2 17.Rb1 Rda8+/–) 16...Rda8 (16...Ra4 17.Nb3 Bd6 18.d4+–) 17.Nb3 Rb5 18.Rdb1 b6?! (18...Ba3+–) 19.a4 (19.Nc5?! Rc5 20.c4 Ng6+–) 19...Rb4 20.Ba3 (better is 20.d4!? Raa4 21.Ra4 Ra4 22.dc5 Re4 23.cb6 cb6+–) 20...Rba4 21.Bc5 Ra1 22.Ra1 Ra1 23.Na1 bc5 24.Nb3 Nc6 25.Nc5 Nb4 26.c3 Na2 27.c4 Kf7 28.Kf1 Ke7 29.Ke2 Kd6 30.Nb3 Ke5 31.g3 Nb4 32.f4 Kd6 33.d4 White prepares the advance c5 33...Nc6 34.Ke3 Na5 35.c5 Kd7 36.Na5 1–0. Fournier,Frederic (1870) – MIKEL40 (1680), Active (5/0), 2004.

5.Bd4+/– Nc6 6.Bc3 Ra4 +/–.

5.Bd4 Nc6 6.Bc3 Ra8 7.e3 Bf5 8.Bb5 h6 9.d4 (9.Nd4!? Qd5 10.Bc6 bc6 11.Nf5 Qf5+–) 9...e6 10.0–0 Be7 (10...Qd5!? 11.Qe2 Bg4+/–) 11.Ne5+– Nf6? (better is 11...Qd5 12.Bc6 bc6+–) 12.Nc6 bc6 13.Bc6 Kf8 14.Ba8 Qa8 15.f3 Nd5 16.e4 Nc3 17.Nc3 Bh7 18.Qd3 f5 19.d5 fe4 (19...Bf6 20.Rae1 Qa5 21.e5+–) 20.fe4 Bf6 21.de6 Ke7 (21...Kg8 22.Nd5 Bg6 23.Nf6 gf6 24.Rf6 Qa7 25.Kh1 c5 26.Rg6 Kh7+–) 22.Qd7 Kf8 23.Qf7 1–0. marekt – themuttsknutts, ChessWorld.net, 2013. (=1.Nf3 d5 2.b4 d4 3.Bb2 a5)

5.Bd4 Nc6!? 6.Bc3 Rh5 +=.

5.Bd4 Rd5 6.e3 c5 (6...Nc6 7.Nc3 Rh5 8.Bb5+–) 7.Bb5+– Nc6 8.Bc6 (8.Bb2!? Nf6+–) 8...bc6+– 9.Bb2 e5? (9...Nf6 10.Nc3 Rh5 11.Ne2+–) 10.Ne5 (10.Nc3!? Rd7 11.Ne5 Rb7+–) 10...Re5 11.Be5 Bd6?? (better 11...Qd5 12.Bg3 Qg2+–) 12.Bg7+– Qg5 13.Bh8 Qg2 14.Rf1 Bg4 (14...Bh3 15.Qe2 Qg6 16.Na3+–) 15.f3 Bh3 16.Qe2 Qe2 17.Ke2 f6 (17...Bf1 18.Kf1 Kd7 19.Kg2+–) 18.Rg1 Kf7 1–0. GuestMJRN – shatirhassan, freechess.org, 2017.

4.b5+= c5

5.c3 Bg4 (5...Nc6 6.Na3+=) 6.Qa4 (better is 6.Ne5!? Be6 7.cd4 Ra5 8.e3+/–) 6...Nc6+= 7.cd4 Bf3 (7...Ra5 8.Qb3 cd4 9.Qb7+=) 8.gf3 cd4 9.Bd4?? (better is 9.Na3 Ra5 10.Qb3+=) 9...Qd4 (9...Ra5!? 10.Qd1 Qd4 11.Nc3–+) 10.Qd4 Nd4 11.Kd1 Ra5 12.e3? (12.Nc3–+) 12...Nb3! 13.Kc2 (13.ab3 Ra1 Pinning (13...Ra1 Deflection)) 13...Na1 14.Kb2 Nc2! 15.Kc2 Ra2 16.Kb3 Ra1 17.Bb5 Kd8 18.Rc1 Ra5 19.Kb4 Ra2 20.Rc3 (20.Kb3 Ra8–+) 20...Rb2 21.Kc4 (21.Rb3 e6 22.Kc3 Rb3 23.Kb3–+) 21...Rb1 22.Rd3 Kc7 23.Be8 Nh6 24.Rd7 Kb6 25.Rd5 Rc1 26.Kd3 e6 27.Rb5 Kc7 28.Rb3 Bd6 29.Ba4 Ra8 30.Bb5 Nf5 31.Ke4 Ne7 (31...Nh4!? 32.Kd3 Nf3 33.Ke2 Ng1 34.Kd3 Bh2 35.Rc3 Rc3 36.Kc3–+) 32.f4 f5 33.Kf3 h6 34.Bc4 (34.Bc4 Rc4 35.Rb2–+). wk1234 – marcinab, kurnik, 2014.

5.bc6 Nc6 6.g3 e5 7.Bg2 Bd6 8.0–0 Nf6 9.d3 0–0 10.Nbd2 Bg4 11.Nc4 Bc7 12.a4 e4 (better is 12...Re8!?=) 13.de4+/– Ne4 14.Nd4 Nd4 15.Bd4 (15.Be4? Ne2 16.Kh1 Ng3 17.hg3 Bd1 18.Rad1 Qe7–+; 15.Qd4?! Qd4 16.Bd4 Be2 17.Be4 Bc4 18.Bb7 Rad8+/–) 15...Nf6 16.Qd3 (16.c3 Qe7 17.Ne3 Rfd8+–) 16...Rb8 (16...Be2!? 17.Qe2 Qd4+/–) 17.e3 Qe7 18.Bb2 (better is 18.Rfb1!?+–) 18...Rfd8+/– 19.Qc3 b5? (better is 19...Qc5!? 20.Ne5 Qc3 21.Bc3 Bf5+/–) 20.ab5+– Rb5 21.Na5 Ba5 22.Ra5 Rbb8 23.h3 (23.Rg5!? Kh8+–) 23...Be6 24.Re5 (24.Rg5!? Kh8 25.Rc1+–) 24...Rdc8 25.Qa3 Qc7 (better is 25...Qa3 26.Ba3 Rc2+/–) 26.Ra5?? (26.Rc1!? Qd7+–) 26...Qc2?? (better is 26...Rb2 27.Qb2 Qa5–+) 27.Bf6 gf6 28.Qe7 Qc3 29.Ra4 Re8 30.Qd6 1–0. rryy44 – waldemar12345, kurnik, 2014.

5.bc6 Nc6 6.g3 e5 7.Bg2 e4 8.Ng1 Qb6!? 9.Qc1 Nf6 –/+.

5.bc6 Nc6 6.g3 e5 7.Bg2 e4 8.Ng1 f5 9.Nh3+= Nf6 10.0–0 Bd6 11.c3 0–0 12.cd4 Bb4 (better is 12...Qb6!? 13.Qb3 Qb3 14.ab3 Be6=) 13.e3+= b5 14.a3 Bd6 15.Qb3 Kh8 16.Qb5 (16.Ng5 Qd7 17.Rc1 b4+/–) 16...Rb8 17.Qc6 Rb2 18.Qc3 Qb6 19.Nf4 (better is 19.Rc1!?=) 19...Bf4 20.gf4 Nd5?? (20...Ba6 21.Rc1 Ng8–/+) 21.Qc5+/– Ba6?? (21...Qc5 22.dc5 Bb7 23.f3 ef3 24.Bf3+/– (24.Rf3?! Rc8=)) 22.Qb6 (22.Qf8) 22...Nb6+/– 23.Rc1 Na4 24.Nc3 Nc3 25.dc3 Rfb8 26.c4 h5 (26...Kg8 27.c5+–) 27.d5 (better is 27.c5!? g6+–) 27...Rd2 28.Bf1 Rbb2? (28...Rb6+–) 29.c5 (better is 29.Rab1 Rb1 30.Rb1+–) 29...Bf1+/– 30.Rf1 (worse is 30.Kf1 Rf2 31.Kg1 Rg2 32.Kh1 Rh2 33.Kg1 Rbg2 34.Kf1 h4 35.Ra2 Ra2 36.Kg1 Rag2 37.Kf1 h3 38.c6 Rh1) 30...Rd5 31.Rac1 Rb8 32.Rfd1 Rd1 33.Rd1 Rc8 34.Rd5 g6 35.Kg2 Kg7 36.Kg3 Kf6 37.Kh4 a4? (37...Ke7 38.Kg5 Rc6 39.h3+–) 38.h3 (better is 38.Rd6 Kf7 39.c6+–) 38...Rc6?? (better is 38...Kf7+–) 39.Rd6 Rd6 40.cd6 Ke6 41.Kg5 Kd6 42.Kg6 Kc5 43.Kf5 Kc4 44.Ke4 Kb3 45.f5 Ka3 46.f6 Kb2 47.f7 a3 48.f8Q a2 49.Qh8 Kb1 50.Kf5 a1Q 51.Qa1 Ka1 52.e4 Kb2 53.e5 Kc3 54.e6 Kd4 55.e7 1–0. zagreb1 – maxll, kurnik, 2014.

5.bc6 Nc6 6.g3 e5 7.Bg2 e4!? 8.Ng1 Nf6 –+.

5.e3 de3 6.fe3 Bg4 7.h3 +=.

5.e3 e5 6.Ne5+– Bd6 7.ed4 Be5? (better 7...cd4 8.Bd4 Nh6+–) 8.de5 Ne7 9.Bc4 (9.Na3 0–0+–) 9...Be6 10.Be6 fe6 11.Qh5 Ng6 12.Qf3 Qe7 (12...Nd7 13.0–0 Rf8 14.Qb7+–) 13.0–0 (13.Na3 Qf7 14.Qe4 0–0+–) 13...Rf8 (13...Nd7 14.Qb7 Rb8 15.Qc6+–) 14.Qh5 Qh4 (14...Nd7 15.Na3 Nb6 16.Qh7+–) 15.Qh4 Nh4 16.a4 (16.Nc3 Rf4 17.f3 Rb4+–) 16...Nd7 17.f4 (17.Nc3 Nf5 18.Ne4 Ke7+–) 17...Ng6 (17...Nf5 18.Nc3+–) 18.g3 h5 (18...Ne7 19.Nc3+–) 19.Nc3 h4 (19...Ne7 20.Ne4 Nf5 21.Kg2+–) 20.Ne4 b6 (20...Kd8 21.Rad1 Rc8 22.Ba3 hg3 23.hg3+–) 21.d4 hg3 (21...cd4 22.Bd4 hg3 23.hg3+–) 22.hg3 Ne7 (22...cd4 23.Rfd1+–) 23.Nd6 (23.Ng5 Nd5 24.Ne6 Rg8+–) 23...Kd8 24.dc5 Nc5 (24...bc5 25.Rfd1 Nd5 26.c4+–) 25.Rfd1 Kc7 (25...Nd5 26.Ba3 Rg8 27.Bc5 bc5 28.c4+–) 26.Ba3 Nd5 (26...Nf5 27.Bc5 bc5 28.Ne4+–) 27.Bc5 bc5 28.c4 Ne3 (28...Nc3 29.Rd2 g5 30.fg5+–) 29.Rd3 Nc2 30.Rad1 Nd4 31.Ne4 Kb6 32.Rd4 cd4 33.Rd4 Rad8 34.Rd6 Rd6 (34...Kc7 35.Re6 Rd1 36.Kg2 Rc1 37.b6 Kb8+–) 35.c5 (35.Nd6?! Kc5+–) 35...Kc7 36.ed6 Kb7 37.c6 Kb6 38.Ng5 Rd8 39.c7 Rc8 (39...Rh8 40.Ne6 Kb7 41.d7 Ka8 42.c8Q Rc8 43.dc8Q Ka7 44.b6 Kb6 45.Qc7 Ka6 46.Nc5) 40.Ne6 g6 (40...Rh8 41.d7 Kb7 42.d8Q Rh1 43.Kh1 g5 44.Qb8) 41.d7 Rc7 (41...Kb7 42.d8Q g5 43.Nc5 Ka7 44.b6 Kb6 45.Qd6 Ka7 46.Qa6) 42.d8Q Kb7 43.Qc7 (43.Qc7 Ka8 44.b6 g5 45.Qa7) 1–0. GuestKBLD – GuestHCHZ, freechess.org, 2020.

5.e3 Nf6 6.ed4+/– cd4 7.Bc4 Nbd7 8.Bd4 e6 9.0–0 Bc5 10.Bc5 Nc5 11.d4 Nce4 12.Re1 0–0 (12...b6!?+/–) 13.Bd3+– Nd6 14.c4 Nf5 15.Bf5 ef5 16.Nc3 b6 17.c5 Be6 18.Ne5 Qc7 19.Na4 (19.Nc6 bc5 20.dc5 Rfc8+–) 19...bc5 20.b6 Qb7 21.dc5 Bd5 22.f3 Rad8 23.Qc2 Bc6 24.Nb2 Nd7 (24...Rd5 25.Qf2+– (25.Nc6?! Qc6 26.Nd3 Nd7+–)) 25.Nd7 Qd7 26.Rad1 Qc8 27.Nc4 Rd1 28.Rd1 a4 29.Ne5 Re8 30.Nc6 Qc6 31.Qf5 1–0. Pcmvr – Ezechiel, playchess.de, 2005.

3.Nf3 c5

4.b5 f6 5.c4 e5 6.e3 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 c5 5.c4 d4 6.Nf3).

4.de3 Qd1 5.Kd1 (5.e3 de3 (5...e5 6.Bb5!) 6.fe3 Qa5 (6...Bg4). W Labahn) 5...f6 6.Nd2 e5 7.a3 Ne7 8.Bb5 Nbc6 9.Ke2 Be6 10.Ngf3 0–0–0 11.Rhd1 a6 12.Bc4 Nd5 13.Ne4 Nf4 14.ef4 Bc4 15.Ke3 ef4 16.Kf4 Be7 17.Rd2 Rd2 18.Nfd2 Bf7 19.Rd1 Rd8 20.Ke3 f5 21.Nc3 a5 22.b5 Nd4 23.Rc1 f4 24.Kf4 Ne6 25.Ke3 Bg5 26.Kf3 Bd2 27.Rb1 Nd4 28.Kg3 Bc3 29.Bc3 Ne2 0–1. Wlosek – Roczniak, corr 2. AMM Poland, 1992–94.

4.bc5 Nc6

5.c3 dc3 6.Bc3 e5 +/–.

5.c3 dc3 6.Bc3+/– Nf6 7.Bf6 ef6 8.d4 Bg4 9.e3 Be7 10.Be2 f5 11.0–0 0–0 12.Nbd2 b6 13.cb6 ab6 14.Qb3 Rc8 (14...f4 15.Rab1+/–) 15.Rfc1 f4 16.Bb5 Bf3 (16...Be6 17.Qb2 fe3 18.fe3+/–) 17.Nf3+– (worse is 17.gf3 fe3 18.fe3 Nd4 19.Rc8 Nb3 20.Rd8 Na1+=) 17...Na5 18.Qb2 fe3 19.fe3 f5 20.h3 Bd6 21.Rc2 Bb4?? (better is 21...Rc2 22.Qc2 Qe7+/–) 22.Rc8+– Qc8 23.Qb4 Qe6 24.Ne5 Rd8 25.Bc4 Nc4 26.Qc4 Qc4 27.Nc4 b5 28.Ne5 Ra8 29.Rc1 g6 30.Rc2 b4 31.Kf2 Rb8 32.Kf3 Kg7 33.Kf4 Kh6 34.g4 b3 35.ab3 Rb3 36.h4 Rb1 37.gf5 Rf1 38.Nf3 gf5 39.Rg2 Kh5 40.Rg5 Kh6 41.Rf5 Kg6 42.Ke4 Rf3 43.Rf3 Kh5 44.Rf4 h6 45.d5+– Kg6 46.d6 Kg7 47.d7 h5 48.d8Q Kh7 49.Qe7 Kg6 50.Rf6 1–0. Holz auf der Heide,Gerhard (1900) – Alvermann,Christian, Leipzig VfB op, 2008.

5.c3 dc3 6.Nc3 e5+= 7.Ne4 Bf5 (7...f5 8.Nd6 Bd6 9.cd6 Qd6 10.Qa4+=) 8.Ng3+/– Bg4 9.Ne5 Ne5 10.Be5 Nf6 (10...f6 11.Bc3 Bc5 12.Qb3+/–) 11.Qc2 (11.d4 Be7+–) 11...Be7 (11...Rc8 12.Ne4 Ne4 13.Qe4+–) 12.e3 (12.Rb1 Bc8+–) 12...0–0 13.Be2 (13.Rb1 Nd7 14.Bc3 Nc5+–) 13...Be2+/– 14.Ke2 Qd5 (14...Nd7 15.Bd6+/–) 15.Bf6 (15.d4 Rfe8+–) 15...Bf6 16.e4 (16.d4 Rfe8 17.Kf1 b6+–) 16...Rfe8 17.Kf3 Qc6 18.Rac1 Rad8 19.Rhe1 g6 20.Nf1 (20.d3 Bd4 21.Qd2 Re5+=) 20...Bg5 (20...Bd4 21.Ne3=) 21.Ne3 (21.h3 f5=) 21...f5= 22.g3 Re4 23.Ke2 Qb5 (23...f4 24.Qb3 Kg7 25.Rb1 fe3 26.Qb7 Qb7 27.Rb7 Re7 28.Re7 Be7 29.fe3 Bc5 30.d4+=) 24.Kf3 (24.d3 Re6+=) 24...Qc6 25.Ke2 Bf6 26.Kf1 Kg7 (26...Rb4 27.Rcd1=) 27.Kg1= a6 (27...Bd4 28.Qb3=) 28.Ng2 (28.Rb1 Re5 29.Rb6 Qc5 30.Rb7 Kh8 31.Qc5 Rc5+/–) 28...Re1 (28...Rde8 29.Re4 fe4 30.d3+=) 29.Re1+= Bd4 30.Nf4 Kf7?? (30...Re8!? 31.Re8 Qe8+=) 31.Ne6 (better is 31.Qc4 Rd5 32.Nd5 Qc5 33.Re7 Kf8 34.Qc5 Bc5 35.Rb7+–) 31...Re8+/– 32.Qc4 (32.Ng5 Kg7 33.Re8 Qe8+/–) 32...Bf2 (32...Re6 33.Re6 Bf2 34.Kf2 Qe6 35.Qb3 Qb3 36.ab3=) 33.Kf2 Re6 34.Re6 (34.d4!? Qd7 35.Re6 Qe6 36.d5+/–) 34...Qe6+= 35.Qe6 (35.Qb3!? Kf6 36.Qb2 Qe5 37.Qb6 Kg5 38.Qd8 Kh6 39.Qd6+=) 35...Ke6= 36.Ke3 Kd5 37.d4 g5 38.a4? (better is 38.h4 gh4 39.gh4+=) 38...a5 39.h4? (better is 39.Kd3–+) 39...h6 40.h5 (40.Kd3–+) 40...Ke6 (better is 40...Kc4 41.Ke2 Kd4–+) 41.Kd3= Kd5 42.Kc3?? (42.Ke3 Kc4 43.d5 Kd5 44.Kd2–+) 42...f4 43.gf4 gf4 44.Kd3 f3 45.Ke3 f2! 46.Kf2 Kd4 47.Kf3 Kc5 48.Kf4 b5 49.ab5 a4 50.b6 Kb6 51.Kf5 a3 52.Kg6 a2 53.Kh6 a1Q 54.Kg6 Qg1 55.Kf7 Qf2 56.Kg6 Qg3 57.Kf5 Qh4 58.Kg6 Qg4 59.Kh6 (59.Kf6–+) 59...Kc7 0–1. mtr – SalSero, internet, 2001.

5.c3 d3 6.ed3+/– Bf5 (6...e5 7.Qe2 Qe7 8.Na3+/–) 7.d4+– Nf6 8.Bb5 e6 (8...a6 9.Ba4+–) 9.d3 (9.Ne5 a6 10.Nc6 Qd7+–) 9...Be7 (9...a6 10.Ba4+–) 10.Ne5 Qc7 11.g4 Bg6 12.h4 (worse is 12.Ng6 hg6 13.Qf3 a6+–) 12...h6 13.Qe2 0–0–0? (13...Bh7+–) 14.Bc6 (14.Ng6?! fg6 15.Rh3 e5 16.de5 Ne5+–) 14...bc6 15.h5 (15.Ng6?! fg6 16.Nd2 Rhe8+–) 15...Bh7 16.Nf7 1–0. guest1237 – Knightcharger, ICC, 1999.

5.c3 Bg4 6.Nd4 Nd4 (6...Rb8 7.Nc6 bc6 8.Qc2+–) 7.cd4 Nf6 8.g3 (8.Qb3 Be6 9.Qd3 Bd5+–) 8...b5 (8...Bd7 9.Bg2 Bc6 10.Bc6 bc6 11.Qa4+–) 9.Bg2 Rc8 (9...Rb8 10.d3+–) 10.0–0 (10.Qb3 Qd7+–) 10...Qd7 11.a4 (better is 11.f3 Bh3 12.Bh3 Qh3 13.Qb3+–) 11...Qe6? (better is 11...b4+–) 12.f3 (12.ab5?! Be2 13.Bh3 Qh3 14.Qe2 Qd7+–) 12...Bf5 (12...Bh3 13.ab5 Bg2 14.Kg2+–) 13.ab5 (13.e4 Bg6 14.ab5 Qd7+–) 13...Bb1 (13...Qd7 14.Qa4+–) 14.Rb1 Nd5 (14...h5 15.Qa4 Qd7 16.f4+–) 15.e4 Nf6 (15...Nc7 16.Qa4 Qd7 17.Bc3+–) 16.Ra1 Qc4 (16...Qd7 17.c6 Qd8 18.Ra7+–) 17.Qa4 Qa4 18.Ra4 e5 (18...Nd7 19.Ra7 e6 20.Rc1+–) 19.c6 (19...ed4 20.Bh3+–) 1–0. Eralos (2010) – webmaster, ChessWorld.net, 2001.

5.d3 Qa5 6.Nbd2 Qc5 7.Nb3 The pressure on d4 grows 7...Qb4 8.Qd2 e5 9.a3 (9.c3 dc3 10.Bc3 Qc3 11.Qc3 Bb4 12.Qb4 Nb4=) 9...Qd2 10.Nbd2 Bd6 11.Nc4 Bc7 12.e3 Bg4 13.Be2 Nf6 (13...b5!? 14.Ncd2 de3 15.fe3 Nge7=) 14.ed4+= Bf3 15.Bf3 Nd4 16.Bd4 ed4 17.Bb7 Rb8 18.Bc6 Ke7 19.0–0 Ng4 20.h3 Ne5 21.Rfe1 Kf6 22.Ne5 Be5 23.Rab1 (23.Re4 Rhd8+=) 23...Rbc8 (23...Bd6!?=) 24.Ba4+= Rc3 25.Rb5 (25.Bb3 Rb8+=) 25...Bc7 (25...Ra3!? 26.Bb3 Bc7+=) 26.Bb3+– Ra8 (26...Bb6 27.Ree5 g6 28.Re4+–) 27.a4 (27.g4 Kg6+–) 27...a6 (27...Rf8 28.g4 Kg6 29.Re7+–) 28.Rb7 (better 28.Rb4+–) 28...Ba5?? (better 28...Rd8+–) 29.Rf7+– Kg6 30.Re4 (better 30.Ree7 Rg8 31.Rf3 Rb3 32.Re6 Kg5 33.cb3+–) 30...Rb3= 31.Rf3 (31.cb3 Kf7 Remove defender) 31...Rb1=+ 32.Kh2 Bc7 33.g3 h6 34.Rd4 Rb2 35.Rg4 Kh7 36.Rf7 Rg8?? (better 36...Be5 37.Rc4 Rd8=) 37.Rc7+– 1–0. GuestCZNW – GuestLQCG, freechess.org, 2017.

5.d3 b6 6.cb6 Qb6 7.Qc1 (7.Ba3 Rb8 8.c3 Qa5=) 7...e5 8.Na3 (8.Nbd2 Be6=) 8...Ba3 (8...Qa5 9.Nd2=) 9.Ba3= Nf6 10.Rb1 Qc7 (10...Qa5 11.Nd2=) 11.e4 (11.c3 Be6=) 11...h6 (11...Qa5 12.Nd2=) 12.Be2 Rb8 (12...Be6 13.c4+–) 13.0–0 (13.Rb8 Nb8 14.Bb2 Bg4+–) 13...a5 (13...Rb1 14.Qb1 Nh5 15.Bc1+=) 14.c3 (better 14.Rb8 Nb8 15.c3 dc3 16.Bb2+–) 14...Na7?? (better 14...Rb1 15.Qb1 dc3+–) 15.Rb8+– Qb8 16.cd4 Nb5 (16...Nd7 17.de5 Ne5 18.Qc5+–) 17.de5 Nd7 18.Bd6! Nd6 19.ed6 Qd6 (19...0–0 20.e5 Bb7+–) 20.Qc8 Ke7 21.Qh8 Qf6 22.d4 Nf8 23.Rc1 a4 24.Rc8 Nd7 (24...Kd6 25.Qf8 Qe7 26.Rd8 Kc6 27.Qe7 Kb6 28.Rb8 Kc6 29.Ne5) 25.Qe8 Kd6 26.e5 (26.Bb5 Nb8 27.Qe5 Qe5 28.de5 Ke6 29.Re8) 26...Kd5 (26...Qe5 27.Ne5 Ne5 28.Qe5 Kd7 29.Bg4 f5 30.Bf5) 27.Bc4 (27.Qd7 Ke4 28.Nd2 Kf4 29.Qg4) 27...Ke4 28.ef6 (28.ef6 Kf5 29.Bd3 Kg4 30.Qd7 Kf4 31.Qf5) 1–0. alexp – nando, net–chess.com, 2018.

5.d3 e5+= 6.e3 Bc5 7.ed4 ed4 8.Be2 Be6 9.0–0 Nf6 10.Nbd2 0–0 11.Re1 Qb6 12.Qc1 Nd5 (12...Rfe8 13.Nb3–/+) 13.Ne4 a5 (13...Bb4 14.c3 dc3 15.Nc3+= (15.Bc3? Nc3 16.Nc3 Qa5–+)) 14.Nc5 Qc5 15.a3 b5 16.Qg5 Qd6 (better is 16...Rfe8!?+=) 17.Nd4+/– f6 (17...Nd4 18.Bd4 f6 19.Qg3+/–) 18.Qg3 Qg3 19.hg3 Ne5?? (better is 19...Nd4 20.Bd4 Rab8+/–) 20.Ne6+– Rfe8 21.Nf4 Nb6 22.Be5 (22.Rab1 Rac8+–) 22...fe5 23.Nh3 Rac8 24.Rac1 Na4 25.Bf3 Rc3 26.Nf4! Kf7 27.Nd5 Ra3 28.Nc7 Re7 29.Nb5 Ra2 30.Bd5 Kf6 31.Ba2 Nc3 32.Bc4 (32.Bc4 Nb5 33.Bb5+–) 1–0. Fournier,Frederic (1685) – naza2006 (1675), Active, 2006.

5.e3 a6? 6.Nd4 (6.ed4 b6 7.Nc3 Nf6+–) 6...Qd5 (6...Nf6 7.Nb3+–) 7.Nc6 (7.Nb3 Nf6+–) 7...Qc6 (7...bc6 8.d4+–) 8.d4 Bf5 (8...Nf6 9.Nd2+–) 9.Nd2 Nf6 10.Be2 Qg2 (10...Qa4 11.Bd3 Bd3 12.cd3 Qd1 13.Kd1+–) 11.Bf3 Qg6 (11...Qh3 12.c4 Ng4 13.Bb7+–) 12.Bb7 Ra7 (12...Rb8 13.Qf3 Bc8 14.Bc8 Rc8 15.Qb7+–) 13.Qf3 Bc2 (13...Qg4 14.Qc6 Bd7+–) 14.Qc6 Nd7 15.Qc8 1–0. DEFFM – GuestKJKR, freechess.org, 2018.

5.g3 e5+= 6.Bg2 Bc5 7.0–0 Nf6 8.d3 0–0 9.c3 Re8 10.Nbd2 Nd5 11.c4 Nde7 12.Nb3 Bb6 13.a4 Bf5 14.Ba3 Ng6 15.Nfd2 Qc7 16.Ne4 Rad8? (better is 16...Be4!? 17.Be4 Nge7=) 17.c5+/– Ba5 18.Nd6 (18.Na5?! Be4 (worse is 18...Na5 19.Nd6 Be6 20.Ne8 Re8 21.e3+/–) 19.Be4 Na5=) 18...Bd7 19.Ne8 Re8 20.Na5 Na5 21.Bb4 Nc6 22.Qd2 a5 23.Bc6?? (23.Ba3 Nce7+–) 23...Bc6?? (better is 23...Qc6 24.Ba5 Bh3=) 24.Ba5+– Qd7 25.Qc2 Qh3 (25...Ra8 26.Bd2+/–) 26.f3 Ne7 27.Be1 Nd5 28.Bd2 Ne3 29.Be3 de3 30.Qc1 Re6 (30...Qh6+–) 31.Qe3 Rh6 32.Rf2 Re6 33.a5 h5 34.a6 ba6 35.Ra6 f5 (35...h4 36.Qg5 hg3 37.Rg2+– (37.Qg3?! Qh6 38.Rg2 Qc1 39.Kf2 Qc5 40.Kf1 Rg6+–)) 36.Qg5 f4 (36...Kh7 37.g4! Rg6 38.Qf5 Be8+–) 37.Ra7 (37.Ra7 Bd7 38.Rd7+–) 1–0. Hal1958 – ManausBR, playchess.de, 2002.

5.g3 e5 6.Bg2 e4 7.Ng1 Nf6 8.d3 e3 (8...Bc5!? 9.Nd2 e3 10.fe3 0–0 11.Bc6 de3=+) 9.fe3= de3 (9...Bc5!? 10.Bc6 bc6 11.ed4 Bd4 12.Bd4 Qd4=+) 10.d4+= Ng4 11.Nh3 Qf6 12.Nc3 Nd4?? (better 12...Nf2 13.Nd5 Qf5=) 13.Nd5+– Nf2 (13...Qd8 14.Qd4 Be6+–) 14.Nf6 gf6 15.Qd4 Bg7 16.Qe3 (16.Qe3 Be6 17.Nf2+–) 1–0. Pierre – Stept, internet, 2019.

5.c3 e5

6.Qa4! Bc5 7.Ne5 Qb6!? 8.Nc4 dc3!? (8...Qa6 9.Qa6 ba6 10.cd4 Bd4 11.Nc3 Nb4? 12.Nd6+–) 9.Bc3! Bf2 10.Kd1 (idea Bg7 +–). Gross.

6.Qa4! Bd7 7.cd4 Nd4 8.Qc4 Bb5 9.Qc3! Wilhelm Gross.

6.Qa4! Bd7 7.cd4 Nd4 8.Qc4 Be6 9.Qc3! Wilhelm Gross.

6.Qa4 Bd7 7.cd4 Nd4 8.Qc4 Nf3 9.ef3 Rc8N 10.Qd5 Rc5 11.Qb7 Rc7 (11...a5 12.Ba3 Qc7 13.Qb3+=) 12.Qb3+= Nf6 (12...f6 13.Bc4 Nh6 14.0–0+=) 13.Bc4+/– (worse is 13.Be5 Rc1 14.Ke2 a6=) 13...Be6 (13...Bf5 14.Be5 Bd6 15.Bd6 Qd6 16.Qb5 Bd7 17.Qb8 Ke7 18.Qh8 Qe5 19.Kf1 Qa1 20.g4 Rc4 21.Kg2–+) 14.Be6+– fe6 15.0–0 Qd6 16.Re1 e4 (16...Nd7 17.Nc3 Nc5 18.Ne4 Nb3 19.Nd6 Bd6 20.ab3+–) 17.fe4 Ng4? (17...Qd7 18.Bf6 gf6 19.d4+–) 18.h4 (better is 18.Qb5 Rd7 19.Qh5 Rf7 20.Qg4+–) 18...Qh2 19.Kf1 Qh1 20.Ke2 Qh4? (better is 20...Qg2!? 21.Qf3 Qf3 22.Kf3 h5+=) 21.Qe6+– Re7 22.Qc6 Rd7 (22...Kf7 23.f3 Qf2 24.Kd1+–) 23.g3 (better is 23.f3!? Qf2 24.Kd1 Bb4 25.fg4 Bd2 26.Qd7 Kd7+–) 23...Qh5 24.Qc8 Rd8 25.Qe6 Be7 26.Bg7 (26.Qf5!? Qf5 27.ef5+–) 26...Nh2+/– 27.g4 Qb5? (better is 27...Ng4 28.Qf5 Qf5 29.ef5 Rg8+/–) 28.Kd1+– Qa4 29.Kc1 (29.Qb3 Qb3 30.ab3 Rg8+–) 29...Nf3 30.Bf6 (30.Re2!? Nd4 31.Bd4 Qd4+–) 30...Rd7 31.Re3 (31.Bh8?! Ne1 32.Qg8 Bf8 33.Qe6 Be7 34.Qg8 Bf8 35.Qe6 Be7+=) 31...Rf8?? (better is 31...Nd4 32.Bd4 Qd4+–) 32.Rf3 Qb4 (32...Rc7 33.Nc3 Qc4 34.Qc4 Rc4 35.g5 Bf6 36.Rf6 Rf6 37.gf6+–) 33.Bc3 (better is 33.g5+–) 33...Qb6 (33...Qb5 34.Rf8 Kf8 35.Qh6 Ke8 36.Qh5 Qh5 37.gh5 Rd6+–) 34.Rf8 Kf8 35.Qd7 Qf2 36.d3 (36.Qf5 Qf5 37.gf5 h5+–) 36...Qe3 37.Kc2 Qf2 38.Nd2 Bg5 39.Rb1 1–0. mtra – Bute, internet, 2002.

6.Qa4 Bd7 7.cd4 Nd4 8.Qc4 Nf3 9.ef3 Be6? 10.Qe4+– f6 11.Qb7 Rb8? (better is 11...Be7 12.Qa6 Qc8 13.Bb5 Kf8+/–) 12.Bb5 +/–. COMP – Gross,Wilhelm, (year?).

6.cd4 e4 7.Ne5 Nd4?? 8.Qa4+– Nc6 9.Nc6 bc6 10.Qc6 Bd7 11.Qe4 Be6 (11...Ne7 12.Na3 Bc6 13.Qf4+–) 12.e3 Rb8 (12...a6 13.Qa4 Qd7 14.Qd7 Kd7 15.d4+–) 13.Be5 Nf6 (13...Rc8 14.Bb5 Ke7 15.Qb7 Bd7 16.Bd6 Ke8 17.c6 Rc6 18.Qc6+–) 14.Qa4 Nd7 (14...Bd7 15.c6 (worse 15.Qa7 Rc8+–) 15...Rb4 16.cd7 Nd7 17.Qc6+–) 15.Bb8 Qb8 16.c6 Bd6 (16...Qb2 17.cd7 Bd7 18.Qd4 Qd4 19.ed4+–) 17.cd7 (17.Bb5 0–0 18.cd7 Bd7+–) 17...Bd7 18.Qe4 Be6 19.Nc3 0–0 20.Rb1 Qc7 (20...Qd8 21.Bc4 Re8 22.Rb7 Bc4 23.Qc4+–) 21.Nb5 (21.Nb5 Qd8 22.Qd4+–) 1–0. algernon – alaamattar, net–chess.com, 2017.

6.cd4 e4 7.Ne5 Ne5 8.de5 Bc5 9.Qa4 Bd7 =.

6.cd4 e4 7.Ne5 f5 8.Qb3 (8.Qa4 Bd7 9.Nd7 Qd7+–) 8...Ne5 9.de5 Ne7 (better is 9...Qa5!?+/–) 10.d4 Bd7 (10...f4 11.e3 f3 12.Nd2+–) 11.e3 Bc6 12.Bc4 White fights for the Initiative 12...Nd5 (12...Bd5 13.Qb5 Kf7 14.Nc3 Bc4 15.Qc4 Kg6 16.Qe6 Kh5 17.h3+–) 13.Nc3 Nc3 14.Bf7 Kd7 15.Bc3 Kc7 (15...Kc8+–) 16.Ba5 b6 (16...Kc8 17.Bd8 Kd8 18.d5+–) 17.cb6 Kb8 (17...ab6 18.Bb6 Kc8 19.Bd8 Kd8 20.Qb6 Ke7 21.Qc6 Kf7 22.e6 Kf6 23.e7 Ke7 24.Qa8+–) 18.ba7 Ka7 (18...Kc8 19.Bd8 Kd8 20.Qb6 Ke7 21.Qc6 Kf7 22.e6 Kf6 23.e7 Ke7 24.Qa8+–) 19.Bd8 (19...Rd8 20.d5+–) 1–0. Pietrzak,Janusz – Chromy,J, Sosnowiec, 1988.

6.cd4 e4 7.Ng1+/– Nd4 8.Qa4 b5?? (better is 8...Nc6 9.Qe4 Be6+/–) 9.cb6+– Ke7 (9...Bd7 10.Qd4 ab6 11.Qe4 Ne7 12.e3+–) 10.Bd4 Bd7 (10...f5 11.Bc5 Kf7 12.Bf8 Kf8 13.Qc6+–) 11.Bc5 Ke8 12.Qe4 Be7 13.Nc3 Nf6 (13...ab6 14.Bb6! Nf6 15.Bd8 Ne4 16.Be7 Nc3 17.Bf6 gf6 18.dc3+–) 14.Be7 Qe7 (14...Ne4 15.Bd8 Nc3+–) 15.Qa8 Qd8 16.Qa7 Qe7 17.b7 1–0. MarcosRamos (1625) – Alex Raistrick, internet, 2007.

6.cd4 ed4

7.Qc2 b6? 8.Qe4 Nce7?? (better is 8...Nge7 9.Nd4 Nd4 10.Qa8 Nc2 11.Kd1 Na1+–) 9.Qa8 bc5 10.Qa7 Nd5 (10...Nc6 11.Qa4 Bd7 12.e3+–) 11.Na3 (11.e4 Qe7 12.Bb5 Kd8 13.Nd4 Qa7 14.Nc6 Kc7 15.Na7 Nb4 16.Nc8 Kc8+–) 11...Ngf6 12.Ne5 (12.e4 Nc7+–) 12...Be6 (12...Nd7 13.Nac4 Ne5 14.Ne5+–) 13.g3 (better is 13.e4!? Nb4 14.Bb5 Nd7+–) 13...Bd6 14.Nac4 0–0 15.Nd6 (15.Bg2 Qc7 16.Qc7 Bc7+– (16...Nc7?? 17.Nd6 Rd8 18.Nb7+–)) 15...Qd6 16.Nd3 Nd7 (16...Nb6 17.Bg2 Bd5 18.Bd5 Nfd5 19.Rc1+–) 17.Bg2 N7b6 (17...Bf5 18.0–0 Bd3 19.ed3 Ne5+–) 18.Nf4! Rc8 (18...Nf4 19.gf4 Combination) 19.Ne6 fe6 (19...Qe6 20.Rc1 Nf6 21.Qa6+–) 20.0–0 Rc7 (20...Ra8 21.Qb7 Rb8 22.Qa6+–) 21.Qa6 Qe5 (21...Rc8 22.Rab1 Nb4 23.Qb5+–) 22.f4 (22.e4!? Qd6 23.ed5 ed5+–) 22...Qf5 (22...Qd6 23.e3! Rd7 24.Rab1+–) 23.Qd3 (better is 23.e4 de3 24.de3 Qf7+–) 23...Qf8 (23...Qd3 24.ed3 Nb4 25.Rae1+–) 24.Rac1 Qd6 25.e3 e5 (25...Ra7 26.Ba3 c4 27.Bd6 cd3 28.f5 ef5 29.Bc5+–) 26.ed4 ed4 1–0. Andromak,Franino (1810) – Jerkovic,Sanjin, Split CRO, Splitsko–Dalmatinske Ch, 2014.

7.Qc2 Qd5 8.Ba3 Nd8 9.e3 de3 10.de3 Ne6? (10...Nc6 11.Nc3 Qd8 12.Bb5+–) 11.Bc4 (11.Bb5 Bd7 12.Nc3 Qh5 13.Bd7 Kd7+–) 11...Qc6 (better 11...Qd8+–) 12.Nd4?? (12.Nc3 Bd7 13.Ne5 Qg2 14.Bd5+–) 12...Nd4 (12...Qg2 13.Rf1=) 13.ed4 Qg2 14.Qe2 Ne7 15.Rf1 Qh2 (15...Bh3=+) 16.d5 (16.Qf3 f6=) 16...Kd8 (16...Bh3 17.d6 Bf1 18.Bb5 Kd8 19.de7 Be7 20.Qd2 Kc8 21.Qd7 Kb8 22.c6 Qe5 23.Kf1 Qb5 24.Kg1 Qc6 25.Qe7–+) 17.Nd2 (17.d6 Nc6 18.Bf7 Bd7+=) 17...Bg4 (17...Bh3 18.d6 Nc6=+ (18...Bf1 19.Nf1 Qh3 20.de7 Be7 21.Rd1 Kc8 22.Qe7 Qa3 23.Qd7 Kb8 24.Qd6 Kc8 25.Bf7 Qa5 26.Ke2 Qa6 27.Qa6 ba6 28.Ne3+–)) 18.Qg4? (better 18.f3!? Qh4 19.Qf2=) 18...Qe5–/+ 19.Qe4 (19.Kd1 Qa1 20.Kc2 Qf6–/+) 19...Qa1 20.Ke2 Qf6 (20...Qc3!? 21.d6 Nc6 (21...Qa3 22.de7 Be7 23.Qb7 Qc5 24.Bb5 Qb5 25.Qb5+–) 22.Bf7 Bd6–/+) 21.Rb1 Qf5?? (better 21...Rb8–/+) 22.Qf5 Nf5 23.Rb7 Rc8 24.Nb3 (24.Ba6 Bc5 25.Bc5 Re8 26.Be3 Rc7+–) 24...Rc7+= 25.Rb8 Rc8 26.Rc8 Kc8 27.d6 Nd6? (better 27...Kd7+–) 28.cd6+– Kd7 29.Nc5?? (better 29.Bb5 Ke6 30.Nc5 Kf6 31.Nb7+–) 29...Kc6+= 30.Ne4 f5 31.Ng3 (31.Nc3 Bd6 32.Bb5 Kc7 33.Nd5 Kb7 34.Bd6 Rd8+=) 31…Bd6= ½–½. petrobbo (2135) – double_bishops (2075), ChessWorld.net, 2013.

7.Qc2 Qd5 8.Ba3 Nf6 (8...Bf5 9.Qb3 Qb3 10.ab3=) 9.e3 b6 (better is 9...de3!? 10.de3 Bf5+=) 10.Bc4+– Qd7 11.Bb5 Bb7 12.Nd4 a6 13.Bc6 Bc6 14.0–0 (14.cb6 Bg2 15.Rg1 Rc8+–) 14...bc5 (14...Be4 15.d3 Bd3 16.Qd3 bc5 17.Re1+–) 15.Nc6 (15.Bc5?! Be4 16.d3 Bg2 17.Kg2 Rc8+=) 15...Qc6 16.d4 (16.Rc1 Rd8+/–) 16...Rc8+– 17.Rc1 Bd6 (17...Ne4 18.Nc3 Nc3 19.Qc3+–) 18.Nd2 (18.Nd2 0–0 19.Bc5 Bc5 20.Qc5+–) 1–0. Bendig,Frank – Labahn,Wolfgang, corr SOK–87–03, 1988.

7.Qc2 Be6 +=.

7.d3 Qa5 8.Qd2= Qc5 9.e3 Nb4? (better 9...de3!? 10.fe3 Be6=) 10.Nd4+– Nf6 11.Be2 Qg5 (11...Bd6 12.Na3 0–0 13.Ndb5+–) 12.a3 (12.0–0 Nbd5+–) 12...Nbd5 (12...Qg2? 13.Bf3 Nd3 14.Qd3+–) 13.Nc3 (13.g3 Nb6+–) 13...a6 (13...Nc3 14.Qc3 Qg2 15.Bf3+–) 14.0–0 (14.Bf3 Nc3 15.Qc3 Bd6+–) 14...Bd6 (14...Nc3 15.Qc3 Bd6 16.f4+–) 15.f4 Qh6 (15...Qg6 16.Bf3 Nc3 17.Bc3+–) 16.Ne4 (16.Nd5 Nd5 17.Bf3 Ne7+–) 16...Bb8 (16...Ne4 17.de4 Ne7 18.Rac1+–) 17.Rac1 0–0 18.Nf6 Nf6?? (better 18...Qf6 19.Nc6 Qg6 20.Nb8 Rb8+–) 19.Rc8! Rc8 (19...g6 20.Qc3 Rc8 21.Qc8 Qf8 22.Qb7+–) 20.Nf5 Qg6 21.Ne7 Kf8 (21...Kh8 22.Ng6 fg6 23.Bf3+–) 22.Qb4 Qh5 (22...Ke8 23.Nc8 Nd5 24.Qb7 Nc7+–) 23.Nc8 Kg8 24.Bh5 (24.Bh5 Ba7 25.Qb7 Be3 26.Kh1 Bc5 27.Qf7 Kh8 28.Bf6 gf6 29.Qf6 Kg8 30.Bf7 Kf8 31.Bd5 Ke8 32.Bc6) 1–0. Janek – Silvmoon, internet, 2017.

7.d3 Bc5+= 8.Nbd2 Nf6 9.Nb3 The pressure on the isolated pawn grows 9...Bb4 10.Nfd2 0–0 11.a3 Be7 12.g3 Ng4 13.Bg2 Nf6 14.0–0 Bf5 15.Nf3 Qd7 16.Qd2 a6 17.Nbd4 Nd4 18.Nd4 Bg6 19.Nf3 h6 20.Ne5 Qf5 21.Bb7 Rab8 22.Bf3 Bh7 23.Nc6 Bd6? (23...Rbe8+–) 24.Nb8 Rb8 25.Rfc1 Rf8 (25...Ne8 26.Bg2+–) 26.Rc6 Be5 27.Rac1 Bb2 28.Qb2 Ng4 29.R1c5 Qc5 (29...Qd7+–) 30.Rc5 Nf6 31.Qb7 g5 32.Rc6 Kg7 33.Qb2 (33.Qb2 Kg8 34.Qf6+–) 1–0. b4_player – bambi, casual, 2013.

7.e3 Bc5 8.Qc2 Qd6 9.Bb5 Bd7 10.0–0 Nge7 11.Bc6 Qc6 12.Ne5 Qd5 13.Nd7 Kd7 14.Qa4 (14.ed4 Bd4 15.Nc3 Qf5+=) 14...Nc6 (14...Qc6 15.Qd1 Nf5 16.ed4 Bd4 17.Bd4 Nd4 18.Qg4 Ne6 19.Qf5+=) 15.Rc1 a6 (15...Kd8 16.Qb5 b6 17.a3+=) 16.Qb3 (better is 16.ed4!? Bd6 17.Qd1+=) 16...Qb3= 17.ab3 Ba7 18.Ra4 Rhc8 19.Na3 f6 20.h3 (20.ed4 Rd8+=) 20...de3 21.de3 h5 22.Rh4 Rh8 (22...Na5 23.Rd1 Ke6 24.Rd3=) 23.Re4 Rae8 24.Re8 (24.Rd1 Kc7 25.Re8 Re8=) 24...Re8 25.Rd1 Kc7 26.Nc2 Re4 27.Bc3 h4 28.Kf1 (28...Bb6 29.Ke2=). Leisebein,Peter – Roever, corr SOK–91–74, 1991.

7.e3!? de3 8.Qe2 +/–.

7.e3 de3 8.de3?! Qd1 9.Kd1 Nf6 =.

7.e3 de3 8.fe3 +/–.

7.Qc2 Nf6

8.Ba3 Be7 9.d3 (9.e3!?+=) 9...Be6 10.Nbd2 0–0 11.Ng5 Bf5 12.h3 (12.Qa4 Nd5 13.Nge4 Be6=) 12...h6 13.Ngf3 Qa5 14.Bb2 Bc5 15.Kd1 Rac8?? (better 15...Be6 16.Nb3 Bb3 17.Qb3 Rfc8=+) 16.Nb3+– Nb4 17.Na5 Nc2 18.Kc2 Bb4 19.Nc4 b5? (19...Rc4 20.Kd1 Rc7 21.Nd4+–) 20.a3 (better 20.Nd4!? Rc4 21.Kb3 Rd4 22.Bd4 a5+–) 20...Bd6 21.Nfd2?? (better 21.Nd4 Rc4 22.Kd2+–) 21...bc4=+ 22.Nc4? (better 22.Bd4 cd3 23.Kd1 de2 24.Be2=+) 22...Be6?? (better 22...Rc4!? 23.Kd1 Ra4–+) 23.Kd2?? (better 23.Bd4 Bc4 24.dc4 Rc4 25.Kd3+=) 23...Bc4–/+ 24.dc4 Rc4 (better 24...Ne4!? 25.Ke1 Rc4–+) 25.e3 de3 26.fe3? (better 26.Ke3 Re4 27.Kd2 Bf4 28.Kc2 Rc8 29.Kb1=+) 26...Rcc8?? (better 26...Ne4 27.Kd1 Rc5–+) 27.Bd3 (27.Bf6 gf6 28.Bd3 Rb8+=) 27...Rfd8 (27...Nd7 28.Ke2=) 28.Ke2 (28.Bf6 gf6 29.Ke2 Rc3+=) 28...Bg3 (better 28...Nd5!? 29.Bd4 Bc5=) 29.Bf6+– gf6 30.Rhf1 Rd6 31.Rf3 Be5 32.Rb1 (32.Bf5 Rb8 33.Ra2 a6+=) 32...Rb6 (better 32...Rc3!? 33.e4 Ra3=) 33.Rb6+– ab6 34.Bb5 (34.a4!?+–) 34...Rc2= 35.Kd3 Rc3 36.Ke4 Ra3 37.g4 Kf8 38.h4 Ke7 39.g5?? (better 39.Rf1=) 39...hg5 40.hg5 Rb3?? (better 40...fg5 41.Rf1 f6–+) 41.gf6=+ Bf6 42.Bc4 Rb4 43.Kd3 b5 44.Bd5 Rb2 (44...Ra4 45.Rf5 Ra3 46.Ke2–/+) 45.e4 b4 (45...Rb4=+) 46.e5 (better 46.Kc4!?=) 46...Be5–/+ 47.Rf7 Kd6 48.Bc4 Kc5 (better 48...Rg2!?–/+) 49.Rf5= Kd6 50.Rf8 (50.Rf7 Rg2 51.Rf3–/+) 50...Rh2 51.Rd8 Kc7 52.Rd5 Rh3 53.Ke4 Bc3 54.Rc5 Kb6 55.Rb5 Kc6 56.Rf5 Rh4 57.Kd3?? (better 57.Rf4 Rf4 58.Kf4–/+) 57...Rh3 (better 57...Rd4 58.Kc2 Rc4–+) 58.Kc2 (58.Ke4 Rh1 59.Bb3–/+) 58...Rh2 59.Kb3 Rb2 60.Ka4 b3 (better 60...Rd2!?–/+) 61.Bb3 Rb1 62.Ka3 Ra1 63.Ba2 Bb4 64.Kb2 (64.Kb2 Re1 65.Bd5 Kd6 66.Kb3=). beatmeeasy (1960) – leborgne13 (1870), lichess.org, 2021.

8.e3 de3 9.de3 Qa5 10.Nbd2 Nd7 11.Rb1 +=.

8.e3 de3 9.de3 Be7 10.Bb5 0–0 11.Nc3 a6 12.Bc6 bc6 13.0–0 Qc7 (13...Rb8!?+/–) 14.Na4+– Rb8? (better is 14...Nd7+–) 15.Be5 Qa7 16.Nd4 Bb7 17.Bb8 Qb8 18.Rab1 Qc7 19.Rfd1 Bc8 20.Nb6 Bg4 21.f3 Bh5 22.Nf5 Bd8 23.Nd6 Bg6 24.e4 Be7 25.Nbc4 Qa7 26.Ne5 Bd8 (26...Bd6 27.Rd6 Qc7+–) 27.Rb7 Qa8 28.Qb3 Nh5 (28...Bh5 29.g4 Bg6 30.Ndf7 Qb7 31.Qb7+–) 29.Ndf7 Bf6 30.Nh6 Kh8 31.Qg8! Rg8 (31...Rg8 32.Nef7 Mate attack) 32.Nhf7 1–0. usingprogram (1980) – paco1999 (1675), kurnik, 2013.

8.e3 de3 9.de3 Be7 10.Bb5 Qa5!? 11.Nc3 a6 +=.

8.e3 de3 9.de3 Be7 10.Bb5 Bd7 11.0–0+/– 0–0 12.Nbd2 (12.Rd1 Qa5 13.a4 Nb4+/–) 12...Rc8 (12...Qa5 13.Bc6 Bc6 14.Nc4+/–) 13.Bf6 (13.Rab1 Nb4 14.Qa4 Bb5 15.Qb5 Nfd5+/–) 13...Bf6 14.Rab1 Qc7 (14...Rc7 15.Ne4+/–) 15.Ne4 Qd8 (15...Be7!?+/–) 16.Rfd1 (16.Bd3 Rc7 17.Nd6 h6 18.Nb7 Qe7+–) 16...Qe7 (better is 16...Rc7+–) 17.Nf6 gf6 18.Bd3 h6 (18...Bg4 19.Bh7 Kg7 20.Bf5 Bf3 21.Bc8+–) 19.Rb7 Rfd8 20.Bc4 (better is 20.Bh7 Kh8 21.Rd6+–) 20...Ne5 (20...Bf5 21.Re7 Bc2 22.Rd8 Rd8+=) 21.Ne5 fe5 (21...Bf5 22.Rd8 Rd8 23.Nf7 Bc2 24.Nd8 Kf8 25.Ne6 Ke8 26.c6+–) 22.Qg6 Kh8 23.Qh6 Kg8 24.Rd6 Bh3 25.Re7 Rd6 26.cd6 Rc4 27.Re8 1–0. Dietz – Wilber, Brooklyn, 1931.

8.e3 de3 9.de3 Be7 10.Nbd2 0–0 +/–.

8.e3 de3 9.fe3 Be7 10.Bb5 0–0 11.Bc6 bc6 12.0–0 Ba6 13.Re1 Qd5 (13...Bd3!? 14.Qc3 Be4=) 14.d4 Bd8 (14...Rab8 15.e4 Qe6 16.Nbd2+–) 15.Nc3 Qh5 16.e4 Bc7 17.e5 Nd5 18.Qe4 (better 18.Qa4!? Bb7 19.Nd5 cd5 20.Rac1+–) 18...Rab8 19.Nd1?? (19.Nd5 cd5 20.Qc2 Bc8+–) 19...Bc4?? (better 19...Ba5–/+) 20.Ba3 (better 20.Qc2!? Bb5 21.a4+=) 20…Ba5=+ 0–1. GuestKZQQ – GuestFRJY, freechess.org, 2017.

5.e3 de3

6.fe3 Qa5 7.Be2 +=.

6.fe3 Qc7 7.Bc4+/– Bg4? (better is 7...e5!? 8.Ng5 Nh6+/–) 8.Bf7!+– Kd8 (8...Kf7 9.Ng5 Double attack) 9.0–0 e6? (9...Nf6 10.Ng5 Bd1 11.Ne6 Kc8 12.Nc7 Kc7 13.Rd1 Kd7+–) 10.Nd4 Nd4 (10...Bd1 11.Ne6 Kc8 12.Nc7 Kc7 13.Rd1+–) 11.Qg4 Nc2 12.Qa4 (worse is 12.Bg7 Nh6 13.Bf6 Be7 14.Qe6 Nf7 15.Qf7 Re8+–) 12...Nf6 (12...Qe7 13.Qc2 Nf6 14.Qd3 Kc8 15.Bf6 gf6+–) 13.Bf6 (13.Bf6 Be7 14.Bg7 Qc5 15.Rc1+–; 13.Qc2?! Qf7 14.Be5 Qh5+–) 1–0. Roldan,Antonio – Gavazzo,James, IECG, 1998.

6.fe3 e5 7.Ne5+– Ne5 8.Be5 Bc5?? (better 8...Qg5 9.d4 Qe3 10.Qe2 Qe2 11.Be2 f6+–) 9.Bd3 (better 9.Bg7 Qh4 10.g3+–) 9...Nf6 (better 9...Qd5!? 10.Bb5 Ke7+=) 10.0–0 0–0? (better 10...Be7+–) 11.Bf6 gf6 12.Qh5 Do you see the mate threat? 12...f5 13.Bf5 (13.Rf5!? Bf5 14.Qf5 Be3 15.de3 Qh4+–) 13...Bf5 14.Qf5 Be7 (14...Rc8 15.Rf3 Qd6 16.Nc3+–) 15.d4 f6 (15...Qc8 16.Qd3+–) 16.Nd2 Rf7 17.c4 Rg7 18.Rf3 Rc8 19.Rb1 b6 20.Ne4 Rc4 (20...Kh8+–) 21.Qe6 Kh8 22.Qc4 Bd6 23.Nd6 Qd6 24.Qc8 Rg8 25.Qf5 Qa3 (25...Rg6 26.Rc1 Kg8+–) 26.Qf6 Rg7 27.Qe5 (27.Rg3 Qe7 28.Rc1 Qe3 29.Re3 h5 30.Re7 Kh7 31.Qg7) 27...Qd3 28.Rf8 1–0. BeepBeepImAJeep (2705) – super_bloacade (2125), lichess.org, 2015.

6.fe3 e6 7.Bb5 Nf6 8.Ne5 Bd7 (8...a6 9.Bc6 bc6 10.Bd4+– (10.Nc6?! Qc7 11.Ne5 Bc5+=)) 9.Nd7+– Nd7 (9...Qd7 10.d4+–) 10.0–0 Qa5? (better 10...Nc5 11.Qh5 Qd7+–) 11.Bc6 bc6 12.Qf3 f6 (12...Kd8 13.Qf7 (worse 13.Qc6 Rc8 14.Qf3 Rc5+–) 13...Qc5 14.Qe6+–) 13.Qc6 e5 (13...Rb8 14.Qe6 Be7+–) 14.Qa8 (14.Qa8 Qd8 15.Qd8 Kd8 16.d4+–) 1–0. GuestZYMW – GuestTDGB, freechess.org, 2020.

6.fe3 e6 7.Be2 Nf6 8.d4 b6 9.cb6 Qb6 10.Bc1 Bb4 (10...e5 11.0–0 e4 12.Ne1+/–) 11.Bd2 (11.c3 Be7+/–) 11...Ne4 (11...e5 12.0–0+/–) 12.0–0 0–0 (12...Nd2 13.Nbd2 (13.Nfd2 Nd4 14.ed4 Qd4 15.Kh1 Qa1 16.Bb5 Bd7 17.Bd7 Ke7+–) 13...0–0 14.a3+/–) 13.Bb4+– Qb4 14.Bd3 Nf6 (14...f5 15.a3 Qe7 16.Nbd2 Nd2 17.Qd2+/–) 15.Nbd2+– Qd6 (15...Qe7 16.Ne4 Ne4 17.Be4+–) 16.Nc4 (16.Ng5 e5 17.Nde4 Ne4 18.Be4 f5+–) 16...Qc7 (16...Qe7 17.Nce5 Bb7 18.c4+–) 17.Ng5 h6 (17...Rd8 18.Qf3 Rd5 19.Ne4+–) 18.Rf6! gf6 19.Nh7 e5? (better is 19...f5 20.Nf8 Kf8+–) 20.Nf6 (better is 20.Qh5!? Kg7 21.Nf8 ed4 22.ed4 Qd8+–) 20...Kg7 21.Nh5 (21.Qf3 Rd8 22.d5 e4 23.Qe4 Kf8+–) 21...Kh8 22.Qf3 f5 23.Ne5 Ne5 24.Qf4 (24.Qf4 Qd6 25.de5+– (25.Qe5?! Qe5 26.de5 Re8+/–); 24.de5?! Qe5 25.Rb1 Rb8 26.Rb8 Qb8+/–) 1–0. Dumontelle,Joe – Boudreau,M, June, 1979.

6.fe3 Nf6 7.Bc4 (7.d4 Qa5 8.Qd2 Qd2 9.Nbd2 b6+–) 7...Bg4 8.d4 e5 9.0–0 e4 10.h3 ef3 11.hg4 Na5?? (11...fg2 12.Rf3 Bc5+–) 12.Bb5+– Nc6 13.Qf3 Qd5 14.e4! Qg5 (14...Qe4 15.Bc6 Double attack (15.Bc6 Decoy); 14...Ne4 15.Nc3 Double attack (15.Bc6 Decoy)) 15.e5 Qg4 (15...Nd7 16.Qf7 Kd8+–) 16.Bc6 bc6 17.Qc6 Nd7 18.Qa8 Ke7 19.c6 Nb6 20.Qa7 Ke6 21.Qf7 1–0. DEFFM – GuestSCSS, freechess.org, 2019.

5.e3 e5

6.Bb5+/– Bd7 7.Bc6 Bc6 8.Ne5 Nf6 (better 8...Bc5 9.Qg4 g6 10.ed4 Nf6+–) 9.Nc6 bc6 10.Bd4 Be7 (10...Qd5 11.Qf3+–) 11.Nc3 0–0 12.0–0 Rb8 (12...Nd7 13.Qg4 g6 14.Na4+–) 13.Qf3 Qd7 (13...Qc7 14.Rab1+–) 14.Rfb1 h5 (14...Qc7 15.Rb3+–) 15.Qg3 g6 (15...Rb1 16.Rb1 Rd8+–) 16.Rb8 1–0. Pierre – Gargannyi, internet, 2020.

6.Bb5+/– de3!? 7.fe3 f6 +/–.

6.Bb5+/– de3 7.fe3 Bg4 8.Nc3 a6 (8...Bc5 9.Ne4 Qe7 10.0–0+=) 9.Bc6+– bc6 10.0–0 Nf6 11.h3 Bh5 12.Qe1 (12.g4 Bg6 13.Ne5 Rb8+–) 12...e4 13.Nd4 Bc5 14.Nb3 (14.Nf5 Rg8+–) 14...Bd6= 15.Qh4 Bg6 16.Ne2 Be7 17.Nf4 0–0 18.Ng6 fg6 19.Nd4 Qd5 20.a4 Rab8 21.Bc3 Qc4 (21...Bd6 22.Rab1=+) 22.Qg3= Nd5 23.Rf8 Rf8 24.Ne6?? (24.Qe5 Rf7 25.Qe6 Ne3 26.Rb1 (26.Qe4 Nf5–+) 26...Qe6 27.Ne6 Nc2 28.Rb2+–) 24…Nc3–+ (24...Nc3 25.Nd4 Qd4 26.ed4 Ne2 27.Kh2 Ng3–+) 0–1. BeepBeepImAJeep – Rocicleito (1955), lichess.org simul, 2017.

6.ed4 ed4 7.Bb5 Bc5 8.0–0 (8.Qe2!? Nge7 9.Bc6 bc6 10.Qe5+=) 8...Nge7= 9.Re1 0–0 10.d3 (10.Ba3 Qd6 11.Bc5 Qc5=) 10...a6 (10...Qb6!? 11.Na3 Be6–/+) 11.Bc4 b5 12.Bb3 Bb7 (12...Nd5 13.a4 b4 14.Ne5+=) 13.Nbd2 (better is 13.Ng5 g6 14.Ne4+=) 13...Re8?? (13...Nd5 14.a4+=) 14.Ne4?? (14.Ng5 Qd7 15.Qh5 Ng6 16.Bf7 Qf7 17.Nf7 Bb4+–) 14...Bb6? (14...Bb4 15.Nfg5 Nd5+/–) 15.Neg5 Nd5? (15...Qd7 16.Bf7 Kh8+–) 16.Re8 Qe8 17.Bd5 (17.Bd5 Qd7 18.Bf7 Kh8 19.Qe2+–) 1–0. Fournier,Frederic (1615) – mmimm, Active, 2007.

6.ed4 ed4 7.Bb5 Bc5 8.Bc6 bc6 9.0–0 (better 9.Qe2!? Kf8 10.Qe5+=) 9...Ne7= 10.Re1 0–0 11.d3 (11.Ba3 Ba3 12.Na3 Re8=) 11...Rb8=+ 12.Qc1 Qd5 (better 12...Re8!?=+) 13.Nbd2 Ng6 14.Nb3 The pressure on d4 grows 14...Bb6 15.a4 (15.Bd4 Bg4 16.Bb6 ab6+–) 15...Bg4 (better 15...c5!?=) 16.Nfd4+= Bc7 17.h3 (17.Qe3 Qd6 18.g3 Rfd8+–) 17...Bh3? (better 17...Nh4!? 18.Re4 f5=) 18.gh3+– Nf4 The mate threat is Qg2 19.Re4 Qg5 20.Kf1 Qg2 21.Ke1 Qg1 22.Kd2 Qf2 23.Kd1 Rfe8 (better 23...f5 24.Re1 c5=) 24.Qd2+– (24.Nc6 Re4 25.Qe3 Qe3 26.Ne7 Re7 27.Be5 Re5 28.c4 Qe2 29.Kc1 Nd3 30.Kb1 Rb3) 24...Qf1 (24...Nh3!? 25.Re8 Re8 26.Qf2 Nf2 27.Kc1 Bf4 28.Kb1 h5+–) 25.Qe1+– Qe1 26.Re1 Nh3 27.Re8 Re8 28.Nc6 Bf4 (28...Nf2 29.Kd2 Bf4 30.Kc3+–) 29.Na7 (better 29.Bd4+–) 29…Nf2 0–1. BeepBeepImAJeep (2540) – Crew64 (2510), lichess.org, 2018.

6.Bb5+/– Bc5

7.0–0 Qc7 8.ed4+– ed4 9.Nd4 Nge7 10.Nc6 Nc6? (10...bc6 11.Bd3 (worse 11.Bg7 Rg8 12.Be5 Qe5 13.Bc6 Bd7 14.Ba8 Bd6=+) 11...Qf4 12.Qh5+– (12.Bg7? Rg8–+)) 11.d4 (better 11.Qh5!? Bf8 12.Re1 Kd8 13.Qg5 Be7 14.Qg7 Re8+–) 11...Bd6 12.d5 Bh2 (better 12...a6 13.Re1 Kf8+–) 13.Kh1 a6?! (13...0–0 14.dc6 bc6 15.Qd4+–) 14.Ba4 (better 14.Re1!? Be6 15.Bc6 bc6 16.de6 Bd6 17.Bg7 Rg8+–) 14...b5 (14...0–0 15.dc6 Be5 16.Be5 Qe5+–) 15.Bb5?? (better 15.dc6 ba4 16.Re1 Be6 17.Qh5+–) 15...ab5+= 16.dc6 0–0 17.Qd4 f6 18.Qd5 Kh8 19.g3 (19.Qb5 Ba6 20.Qh5 Bf1 21.Qh2 Qc6–+) 19...Bg3 20.fg3 Qg3 21.Qg2 (21.Rf3 Qh4 22.Kg2 Ra4=+) 21...Qc7? (better 21...Qh4!? 22.Qh2 Qe4 23.Kg1 Be6+=) 22.Nc3+– Qe5 (22...Qf7 23.Qf3 Be6+–) 23.Rae1 (23.Qd5 Qe3+–) 23...Qd4? (23...Qh5!? 24.Qh2 Qc5+–) 24.Rg1 (24.Re4 Qc5 25.Rh4 Ra7+–) 24...Qh4 25.Qh2 Qb4 (25...Qc4 26.Re7 Bg4 27.Qg2+–) 26.Qg3 g6 27.Rb1 Bf5 28.a3 (28.Ba1 Qc4 29.Rb5 Be4 30.Ne4 Qe4 31.Rg2 Qc6+–) 28...Qc4 29.c7 Bc2 (29...Rac8 30.Rge1+–) 30.Rbf1 (30.Rbc1 Bf5 31.Rgd1 Qb3+–) 30...b4 (better 30...Rac8+–) 31.Rf4 (better 31.ab4 Qb4 32.Bc1+–) 31...Qc6+= 32.Kh2 (32.Qg2!? Qg2 33.Rg2 bc3 34.Bc3=) 32...bc3= 33.Bc3 Be4 (33...Rac8 34.Rc1 Bf5 35.Rf2=) 34.Rc1 Bf5 35.Rc4 Qe6 (35...Qc4? 36.Bf6 Rf6 37.Rc4+–) 36.Bf6?? (better 36.Bd4=) 36...Qf6–+ 37.c8Q? (37.Qc3 Kg7 38.Rc6 Qc3 39.R1c3–+) 37…Bc8 0–1. tsodikovich (1820) – righa (1775), gameknot.com, 2015.

7.0–0 Bg4+= 8.h3 Bf3 9.Qf3 Nge7 10.ed4 Bd4 11.c3 Bc5 12.Re1 0–0 13.d3? (13.a4 a6 14.Bc6 Nc6=) 13...a6 (better is 13...Qb6!? 14.a4 a6 15.Bc6 Qb2 (15...bc6?! 16.Ba3=; 15...Nc6?! 16.Ba3+=) 16.Bb7 Rab8–+) 14.Ba4 Qd6 15.Nd2 f5 16.Bb3 Kh8 17.Nc4 Qc7 (17...Qf6 18.Qg3=) 18.Ne3 (18.Qg3 b5 19.Ne5 Ne5 20.Qe5 Bd6+/–) 18...Rad8= 19.Bc2 (19.Rad1 b5=) 19...b5 20.a3 Rf6 (20...e4!? 21.Qe2 ed3 22.Bd3 f4–/+) 21.Rad1= Qd6 22.Ra1 Rdf8 23.a4 b4 (23...Be3 24.Re3 b4 25.Bb3=) 24.Nc4= Qc7 25.Qe2 (25.cb4!? Bd4 26.Rab1+=) 25...Ng6 (25...bc3 26.Bc3 Bd4 27.Qd2+=) 26.d4 (better is 26.cb4!? Nd4 27.Qd1 Bb4 28.Re5 Ne5 29.Bd4 Nc4 30.Bf6–/+) 26...ed4–/+ 27.cd4 Bd4 28.Bb3? (better is 28.Qd2–/+) 28...Nf4–+ 29.Qf1 Rg6 30.Kh1 Rg2 31.Bc1 (31.Ne3 Rg6 32.Rab1–+) 31...Rf2 32.Bf4 Qf4 (32...Qf4 33.Qf2 Bf2–+) 0–1. Frech,Josef (1825) – Grabara,Manfred (1900), Wch Seniors, 1998.

7.Ne5 Qd5 8.Qf3 Qe5 9.Bc6 Kf8 10.Qe4+/– (10.Bb7 Bb7 11.Qb7 Rb8–+).

7.Ne5 Bd7? 8.Nf7! Kf7 9.Qh5 g6 (9...Kf8 10.Bc6 Bc6 11.Qc5 Kf7 12.Qh5 Kf8 13.Bd4+–) 10.Qc5 Nge7 (10...Nf6 11.0–0+– (11.ed4?! Rc8+–; 11.Bd4?! Nd4 12.Bd7 Nc2 13.Qc2 Qd7+–)) 11.0–0 (11.ed4 Be6+–) 11...Rc8 12.Bc4 Ke8 (12...Be6 13.Be6 Ke6 14.ed4+–) 13.Bd4 (13.ed4 Na5 14.Qe5 Rf8+–) 13...b6 (13...Rf8 14.Na3 Rf5 15.Qd6 Nd4 16.Qd4+–) 14.Qd6 Nf5 (14...Nd4 15.Qd4 (15.ed4?! Rc4 16.c3 Rc6=+) 15...Rf8 16.Re1+–) 15.Qd5 Rf8 16.Bc3 Nh4 (16...Nce7 17.Qd3 Nd6 18.Qd6 Rc4+–) 17.Bg7 Rf5 (17...Nb4 18.Qd6 Qe7 19.Bf8 Kf8 20.Qf4 Nf5 21.Bb3 Nc2 22.Bc2 Rc2 23.g4+–) 18.Qg8 Ke7 19.Qh7 Kd6 20.Nc3 Kc7 (20...Rh5 21.Bh6 Nf3 22.gf3+–) 21.Bh6 (21.Nd5 Kd6 22.Nf6 Qe7 23.Qh4 Qg7 24.Ne4 Kc7 25.Qg3 Qe5+–) 21...Rh5 (21...Ne5 22.Bd5 Kb8 23.f4+–) 22.Bf4 (22.Ba6!? Ne5 23.Nd5 Kb8 24.Bc8 Nf5 25.Bd7 Rh6 26.Qh6 Nh6+–) 22...Kb7 23.Qg7 1–0. DEFFM – GuestPTYX, freechess.org, 2018.

7.Ne5 Nge7 8.Nf7 Kf7? (better 8...Qb6 9.Qh5 0–0+–) 9.Qh5+– g6 10.Qc5 de3?? (10...b6 11.Qc4 Be6+–) 11.fe3 Rf8 12.0–0 Kg8 (12...Ke8 13.Rf8 Kf8+–) 13.Bc4 (13.Bc4 Rf7 14.Bf7 Kf8 15.Bg6 Bf5 16.Rf5 Kg8 17.Qc4 Nd5 18.Rd5 Qf6 19.Rd7 Kf8 20.Bf6 hg6 21.Qf7) 1–0. DEFFM – GuestCTWL, freechess.org, 2018.

6.Bb5+/– Bg4

7.ed4 ed4 8.Qe2 Qe7 9.Bd4 (9.Qe7 Nge7 10.Nd4 0–0–0+–) 9...0–0–0 10.Bc6 (10.Be3 Ne5 11.d4 Nf3 12.gf3+–) 10...bc6? (10...Qe2 11.Ke2 Rd4 12.h3 bc6 13.hg4 Re4 14.Kd3+–) 11.Qe7 (better 11.Be3+–) 11...Be7?? (better 11...Ne7 12.Be3 Bf3 13.gf3 Nf5+–) 12.Bg7+– Bf6 13.Bh8 Bh8 14.Nc3 Re8 15.Kd1 Kd7 (15...Bc3 16.dc3 Nf6 17.Re1+–) 16.Rb1 Ke6 (16...Bc3 17.dc3 Kc7+–) 17.Re1 Kf5 (17...Kd7 18.Rb7 Kc8 19.Re8 Kb7 20.Rg8 Bf3 21.gf3 Bc3 22.dc3+–) 18.Re8 Bc3 19.dc3 (better 19.Rg8 Bf3 20.gf3+–) 19...Kf4 (19...Nf6 20.Re7 Bf3 21.gf3 Nd5 22.Rf7 Kg6+–) 20.Rb4 Kf5 21.Re5 Kf6 22.Rf4 (better 22.Rg4 Nh6 23.Rgg5+–) 22...Kg6 23.Rg4 (23.Rg5 Kh6 24.Rfg4 Nf6 25.Rh4 Nh5 26.Rhh5) 23...Kh6 (23...Kf6 24.Rg8 a6 25.g4 h6 26.h4 a5 27.g5 hg5 28.hg5) 24.Rg8 f6 25.Rf5 (25.Re4 a6 26.Rh4) 25...a5 (25...a6 26.Rf6 Kh5 27.g4) 26.Kd2 (26.Rf6 Kh5 27.g4) 26...a4 27.Kd3 (27.Rf6 Kh5 28.g4) 27...a3 28.Kd4 (28.Kd4; 28.Rf6 Kh5 29.g4) 1–0. FeegLood (1930) – peter_peterson (1695), lichess.org, 2015.

7.h3 Bf3 8.Qf3 Qd6 9.Bc4 Qf6 10.Qd5 Nce7 11.Bb5 Nc6 12.0–0 (time, 1–0). guest297 – guest244, ICC, 1999.

7.h3+– Bf3 8.Qf3 Nge7 9.ed4 g6? (better is 9...ed4 10.–0 a6+–) 10.Qf6 Rg8 11.Bc4 Rg7 12.de5 Qc7? (12...Nf5 13.e6 fe6 14.Qd8 Rd8 15.Bg7 Ng7+–) 13.Qd6 Qd6 (13...Qa5 14.e6 fe6 15.Qe6 (15.Be6?! Nf5 16.Qd5 Rd8+–) 15...Qc5 16.Bg7 Bg7 17.Qf7 Kd7 18.Qg7 Qc4 19.Nc3+– (19.Qh7 Nd4 20.Nc3 Nc2 21.Kd1 Na1–/+)) 14.ed6 (worse is 14.cd6 Nf5+–) 14...Nf5 15.Bg7 Bg7 16.c3 0–0–0 17.0–0 h5 (17...b6 18.Bb5 Nb8 19.d4 Nd4 20.cd4 Bd4 21.Nc3+–) 18.Na3 (18.Bf7 Ne5 19.Be6 Kb8+–) 18...Kb8 (18...Ne5 19.Bd5 Nd3 20.Bf7+–) 19.Rab1 Rd7 20.Rfe1 f6 (20...Nh6+–) 21.Re8 Rd8 22.Rbe1 Kc8 (22...Nd6 23.cd6 f5 24.d4+–) 23.Be6 Kb8 24.Rd8 (24.Bd7 Nd6 25.cd6 f5 26.Bc6 Bf6+–) 24...Nd8 25.Bf5 gf5 26.Re8 Kc8 27.Nb5 a6 (27...Kd7 28.Re7 Kc6 29.Na7 Kc5 30.Rg7 Kd6 31.Nc8 Kc6 32.Ne7 Kd6 33.Nf5 Ke5+–) 28.Na7 Kd7 (28...Kb8 29.Rd8 Ka7 30.d7 Bh6 31.Rc8 Bf4 32.d8Q Bb8 33.Rb8 b5 34.cb6) 29.Re7 1–0. tripp_stir – delightful_porridge, ChessWorld.net, 2013.

7.h3 Bh5 8.g4 a6 9.Bc6 (9.gh5?! ab5 10.ed4 ed4 11.Qe2 Be7+–) 9...bc6 10.gh5 Bc5?! (10...Rb8 11.Ba3 de3+–) 11.Ne5 Qd5 12.Qf3 Qe5 (12...de3 13.fe3 f6 14.Qd5 cd5+–) 13.Qc6 Ke7 14.Qa8 g6 (14...Qe6 15.Qb7 Kd8 16.Qg2+–) 15.Ba3 (better 15.Qb7 Kd8+–) 15...Ba3 16.Na3 d3 (16...de3 17.Qb7 Kf8+–) 17.Qb7 Kf8 18.Qb4 Kg7 19.Qd4 (19.Qc3 Qc3 20.dc3 dc2 21.hg6 hg6 22.Nc2 Nf6+–) 19...Qf6 (19...Qd4 20.ed4 Nf6 21.hg6 hg6 22.cd3+–) 20.Qf6 Nf6 21.cd3 (21.hg6 hg6 22.cd3 Rh4+–) 21...Nh5 22.Nc4 Rd8 23.d4 Nf6 24.Ne5 Rb8 25.Rc1 Rb7 (25...Rb2 26.Rc7 Rb1 27.Ke2 Rh1 28.Rf7 Kh6 29.Rf6+–) 26.0–0 h5 (26...Nd5 27.Rc5 Ne7 28.Rfc1+–) 27.Rc6 Ne4 (27...Ra7 28.Rfc1 Ne8 29.d5+–) 28.Rfc1 Nd2 29.Rc7 Rb2 (29...Rc7 30.Rc7 Kg8+–) 30.Rf7 Kh6 31.h4 (31.Rc6 Rb1 32.Kg2 Rg1 33.Kg1 Nf3 34.Nf3 h4 35.Rc8 g5 36.Rc6 Kh5 37.Rh7) 31...g5 32.Rc6 1–0. GuestTCDB – iiooi, freechess.org, 2017.

7.h3 Bh5 8.g4 de3 9.gh5 ef2 (9...e4 10.fe3 ef3 11.Qf3+–) 10.Kf2 e4 (10...Bc5 11.Kg2 f6 12.Qe2+–) 11.Re1 f5 12.d3 (12.d4 a6 13.Ba4 Qa5 14.Bc6 bc6+–) 12...Bc5 13.d4 (13.Kg2!? Nf6 14.Nc3 Nh5 15.de4 Nf4 16.Kh2 0–0+–) 13...Bb6 (13...Be7 14.d5 Qb6 15.Nd4 0–0–0 16.dc6 bc6+=) 14.Qd3 (14.Ne5 Qh4 15.Kg2 Nge7+–) 14...Nf6? (better 14...Nge7 15.Qc4 ef3 16.Kf3 Kf8 17.Bc6 bc6+=) 15.Qc4 (better 15.h6 gh6 16.Qb3+–) 15...Nd5?? (15...Qd6 16.Ba3 Qf4 17.Bc6 bc6 18.Qc6 Kd8 19.Qd6 Qd6 20.Bd6 Re8+=) 16.Bc6 bc6 17.Qc6 Kf7 (17...Kf8 18.Ba3 Ne7+–) 18.Ne5 Kf8 19.Ba3 (better 19.Nd7 Kf7 20.Qd5 Ke8 21.Qf5 Qh4 22.Kf1+–) 19...Ne7 20.Qe6 (20.c3 Bc7 21.Qe6 Be5 22.Qe5 Ke8+–) 20...Bd4 (20...Qd4 21.Ke2 Qe3 22.Kd1 Rd8 23.Nd7 Rd7 24.Qd7 Qd4 25.Qd4 Bd4 26.c3+–) 21.Kf1 (21.Kg2!? Be5 22.Qe5 Kf7+–) 21...Be5 22.Qe5 1–0. GuestXYLL – GuestBVMY, freechess.org, 2016.

4.bc5 e5

5.Ne5+/– Bc5 6.c3 dc3 7.Nc3 Bf2 8.Kf2 Qd4 (8...Qf6 9.Ke1 Qe5 10.e3+=) 9.e3+/– Qe5 10.Bb5 Bd7 11.Qb3 (11.Bc4 Qg5 12.Qb3 Qf5 13.Ke1 Bc6+/–) 11...Qf5 12.Ke1 Nf6 13.Rf1 (13.Bc4!? 0–0 14.Ba3+/– (14.Qb7?! Bc6 15.Qe7 Qg4+/–)) 13...Qg4+= 14.Rf6 gf6 15.Nd5 Kf8 16.Bf6 (16.Qa3 Kg7 17.Bf6 Kh6 18.Bh8+–) 16...Qg2?? (16...Bb5 17.Qb5 Na6 18.Qb7 Re8 19.Bh8 Qg2 20.Qa6 Qd5 21.Qh6 Ke7 22.Bf6 Ke6 23.Bd4 Kd7 24.Qh3 Kd6 25.Ba7 Rg8+–) 17.Qb4+– Kg8 18.Ne7 (18...Kf8 19.Nf5 Ke8 20.Qe7) 1–0. Roscher,J – Frenzel,Lothar, corr, 1989.

5.Ne5+/– Bc5 6.Nd3 Be7 7.e3 +/–.

5.Ne5+/– Bc5 6.Nf3 Nf6 7.e3 Nc6 8.Bb5 de3 9.fe3 (9.de3? Qa5 10.Nfd2 Qb5 11.Bf6 gf6–+) 9...0–0 10.0–0 a6 11.Be2 Re8 12.c4 Bd6 13.Nc3 Ne5 14.Ne5 Re5 (14...Be5 15.d4 Bc7 16.Qd3+–) 15.d4 (15.Na4 Rf5 16.c5 Be5+–) 15...Rg5? (15...Re3 16.c5 Bb8 17.Qd2=) 16.Bf3 (16.c5 Bc7+–) 16...Qc7 (16...Ng4 17.Bg4 Bg4 18.Qb3+=) 17.h3 (better 17.h4!? Ra5 18.Nd5 Nd5 19.Bd5+– (19.cd5?! Bh2 20.Kh1 Bg3=)) 17...Bh3+= 18.c5 Bh2 19.Kh1 Qg3 Do you see the mate threat? 20.Qe2 (20.gh3?? Bg1 21.Qe2 Qh3 22.Qh2 Qh2) 20...Bg2?? (better 20...Bg4 21.Qf2 Qf2 22.Rf2 Rh5=) 21.Qg2+– Qh4 (21...Qg2 22.Bg2 Rh5+–) 22.Qh2 Qh2 23.Kh2 Re8 24.Rae1 Nh5 (24...Ng4 25.Bg4 Rg4 26.Kh3+–) 25.Rg1 Rg1 26.Kg1 Nf6 (26...Nf4 27.Bb7 Nd3 28.Re2+–) 27.Kf2 (27.Bb7 Rb8 28.c6 Ne8+–) 27...Nd7 (27...Rb8 28.Rb1+–) 28.Ne4 (28.Bb7 a5+–) 28...f6 (28...Re6 29.Nd6 b5 30.Rg1+–) 29.Nd6 Rb8 30.Bb7 (30.Bb7 h5 31.c6+–) 1–0. BeepBeepImAJeep (2640) – iran_man (1650), lichess.org, 2017.

5.Ne5+/– Qd5 6.Nf3 Bc5 (6...Nc6 7.c3 dc3 8.Nc3 Qc5 9.e3+/–) 7.c3 Nc6 (7...dc3 8.Nc3 Qd8 9.Qc2+–) 8.Nd4 (8.cd4 Bb4+–) 8...Nd4 (8...Nf6 9.e3+/–) 9.cd4+– Bd4?? (better is 9...Bd6+–) 10.Qa4 b5 11.Qd4 Qd4 12.Bd4 Ne7 (12...f6 13.Nc3 a6 14.a4+–) 13.e3 0–0 (13...a6 14.Bg7 Rg8 15.Be5+–) 14.Bb5 (14.Bc5!? Nd5 15.Bf8 Kf8 16.Bb5 Be6+–) 14...Bf5 (14...a6 15.Be2+–) 15.Nc3 Nc8 (15...a6 16.Be2+–) 16.0–0 (16.e4 Be6+–) 16...Nd6 (16...Rd8 17.Rfd1+–) 17.Be2 (17.Bc6 Rab8+–) 17...Ne4 (17...a5 18.d3+–) 18.Ne4 (18.Nd5 Be6 19.Ne7 Kh8+–) 18...Be4 19.Bf3 (19.Rfc1!? a5+–) 19...Bf3 20.gf3 g5 (20...a6 21.Rfc1+–) 21.Kh1 (21.Rfc1 f5+–) 21...f5 (21...f6 22.Rac1+–) 22.Rg1 h6 23.h4 f4 24.hg5 fe3 (24...hg5 25.Rg5 Kf7+–) 25.gh6 Kh7 26.Be3 (better is 26.Rg7!? Kh6 27.Kg2 Rf5+–) 26...Rf3 (26...Rf7 27.Rg4 Rc8 28.Rag1+–) 27.Rg7 Kh8 28.Bd4 Rh3 (28...Rf4 29.Ra7 Rd4 30.Ra8 Kh7 31.Ra6 Rd2 32.Re1+–) 29.Kg2 Rh6 30.Rg3 Kh7 31.Rh3 (31.Re1 Rh2 32.Kh2 Rg8 33.Re7 Kh6 34.Rg8 a6 35.Be3 Kh5 36.Rh7) 31...Rh3 32.Kh3 Rd8 (32...a6 33.Be5+–) 33.Bc3 (33.Ba7 Rd2 34.a4 Rd6+–) 33...Rd3 (33...Rf8 34.Kg3+–) 34.Kg2 (34.Kg4 Kg6+–) 34...Kg6 35.Rb1 Kf5 (35...Rd7 36.d4+–) 36.Rb7 Kg4 (36...a6 37.Rb6+–) 37.Ra7 Rf3 (37...Kf4 38.Re7+–) 38.a4 (better is 38.Rg7 Kf4 39.Rf7 Ke4 40.Rf3 Kd5+–) 38...Kf5 (38...Rf8 39.a5+–) 39.a5 (better is 39.Kf3 Ke6 40.a5+–) 39...Ke6 (39...Rd3+–) 40.Kf3 Kd5 41.Rb7 Kc4 (41...Kc6 42.a6 Kd5 43.a7 Kc6 44.a8Q Kd6 45.Qa6 Kd5 46.Rd7 Kc5 47.d4) 42.a6 Kd3 43.a7 Kc2 44.a8Q Kd3 45.Qd8 (45.Qa6 Kc2 46.Qg6 Kd1 47.Rb1) 45...Kc2 46.Rb2 Kc1 (46...Kd1 47.Qd3 Ke1 48.Rb1) 47.Qa5 Kd1 48.Qa1 1–0. orangotango – AnthonyW, internet, 2003.

4.bc5 e6

5.Bd4 Nc6 6.Bb2 Bc5?? 7.Bg7+– Nge7 (7...Nh6 8.Bh8 (8.Bh6?! Qf6+–) 8...f6 9.d4+–) 8.Bh8 Nf5 9.e3 Qb6 (9...f6 10.d4 Be7 11.g4 Ne3 12.fe3+–) 10.Be2 Bd7 11.0–0 0–0–0 12.Bf6 Rg8 13.d3 (13.Nc3 Bb4+–) 13...Bd6 (13...Rg6 14.d4 Rf6 15.dc5 Qc5 16.Qd3+–) 14.d4 (14.Nbd2 Qc7+–) 14...Qc7 (14...Rg6 15.Be5 Be5 16.de5+–) 15.Nbd2 e5 16.Nc4 (16.c3 Nh6 17.Ne4 ed4 18.cd4 Ng4 19.Nd6 Qd6+–) 16...e4 17.Nfe5 Ne5 18.de5 Bc5 (18...Bf8 19.Nd2 Qc6 20.Rb1+–) 19.Qd5 Be3 (19...Nh6 20.Rfd1+–) 20.fe3 Rg6 21.Qf7 (21.Qf7 Kb8 22.e6 Rf6 23.Qf6+–) 1–0. BeepBeepImAJeep (2660) – Sempronio (1690), lichess.org, 2017.

5.Nd4 (5.Bd4 Nc6 6.c3 Nf6+/–) 5...Nf6 (5...Bc5 6.Nb3 Bf8 7.Nc3+/–) 6.Nb3 Be7 (6...Nbd7 7.d4+/–) 7.e3+– 0–0 8.d3 (8.Qf3 Nc6+–) 8...Nd5 (8...Nc6 9.Be2+/–) 9.c4 Nb4 10.a3 N4c6 11.Qg4 (better is 11.d4!?+–) 11...e5+/– 12.Qg3 Bh4 13.Qf3 Be6 (13...Be7 14.N1d2+–) 14.N1d2 (14.Be2 Nd7+–) 14...Nd7 15.Ne4 (15.Be2 a5 16.a4 Nf6+–) 15...b6 (15...f5 16.Nd6+/–) 16.g3 (16.d4!? bc5 17.d5 Rb8+–) 16...Be7+/– 17.Bg2 f5 18.Nd6 e4 19.de4 bc5? (better is 19...Nde5!? 20.Qd1 Bd6 21.cd6 Bc4+–) 20.ef5+– Na5?? (20...Nde5 21.Be5 Ne5 22.Qa8 Qd6 23.Qe4 (23.fe6?! Ra8 24.Ba8 Qb8=; 23.Qa7 Bc4 24.Nd4 Bf6=) 23...Bc4 24.Na5 Nd3 25.Kf1+–) 21.Nb7 (better is 21.Qa8 Qa8 22.Ba8 Nb3 23.fe6+–) 21...Nb7 22.Qg4 (22.Qb7 Rb8 23.Qa7 Rf5+–) 22...Bf6 (better is 22...Nf6 23.Bf6 Bf6 24.fe6 Qd3+/–) 23.Bf6?? (better is 23.fe6 Bb2 A) 24.Bb7?! Ne5 25.Qd1 Nd3 26.Kf1 Nf2 27.Qd8 Rad8+= (27...Rfd8?? 28.Kf2 Rab8 29.Ra2 Rb7 30.Rb2+–); B) 24.ed7 Ba1 25.Bb7 (25.Na1?! Qa5 26.Kf1 Rab8+/–) 25...Bc3 26.Kf1+–) 23...Qf6 Increases the pressure on f5 (23...Nf6 24.Qf4 Qd3 25.fe6 Qb3+–) 24.Bb7= White launches an attack 24...Qc3 25.Kf1 Bf5 (25...Bc4 26.Kg2 Bb3 27.Ba8 Ra8 28.Qe4+=) 26.Qd1 Bd3?? (better is 26...Rab8 27.Bd5 Kh8=) 27.Kg2+– Rad8 28.Bd5 Kh8 29.Rc1 Qf6 30.f3 (30.f4 Qg6 31.Rc3+/–) 30...Bf5? (better is 30...Ne5+=) 31.e4+– Bg6 32.f4 Be8 33.Nd2 Ne5 (33...Nb6+–) 34.Nf3?? (34.fe5 Qf2 35.Kh3 Bd7 36.e6+/–) 34...Bh5= 35.Rc3 (35.fe5? Bf3 (worse is 35...Qf3 36.Qf3 Bf3 37.Kh3+/–) 36.Kg1 Qe5–+) 35...Ng6?? (better is 35...Bf3 36.Rf3 Nf3 37.Qf3 Qb2 38.Qf2 Qa3=) 36.e5 Qf5 37.Qc2 (better is 37.Rf1!? Qg4 38.Kh1 Ne7+–) 37...Qg4 38.Ng5?? (better is 38.Kf2 Nf4 39.gf4 Qf4 40.Qd1+/–) 38...Nf4–+ (38...Nf4 39.Kg1 Ne2 40.Kg2 Qg5–+) 0–1. Trkn – mike, itsyourturn.com, 2001.

3.Nf3 Nc6

4.a3 a6 5.e3 =.

4.b5 Qd7?? 5.bc6+– bc6 (5...Qc6 6.Bd4 f6 7.Nc3+–) 6.Bd4 Bb7 (6...Nh6 7.e4+–) 7.e3 e6 8.Be2 (better is 8.Ne5 Qc8 9.Qf3+–) 8...Bd6 (8...f6 9.Bb2+–) 9.0–0 (better is 9.Bg7 Ne7 10.Bh8+–) 9...Nf6 (9...f6 10.Bc3+–) 10.Nc3 a6 11.d3 g6 12.Bf6 Be7 13.Bh8 f6 14.Ne4 Kf8 15.Bf6 Kf7 16.Be7 Ke7 17.Ne5 Qd6 18.Nd6 (18.Nd6 cd6 19.Qb1+–) 1–0. Fournier,Frederic (1875) – bonanzazeus, Active (5/0), 2005.

4.b5 Bd7 5.bc6 Bc6 6.Nd4 Qd7 (6...Bd7 7.e4+–) 7.e3 Be4 8.f3 (8.Nc3 Bg6+–) 8...Bf5 (8...Bg6 9.f4 Nf6 10.Nf3+–) 9.c4 (9.Nf5 Qf5 10.Bd3 Qg5+–) 9...0–0–0 (9...Bg6+–) 10.Qa4 (better 10.c5 c6 11.Qa4+–) 10...Qa4–+ 11.Nf5 Qc2 12.Be2 (12.Ne7 Be7 13.Bc3–+) 12…Qb2 0–1. GuestHGHT – GuestHVJR, freechess.org, 2019.

4.b5 Bf5?? 5.bc6 bc6 6.Nd4 Be4 (6...Bd7 7.Na3+–) 7.d3 c5 (7...Rb8 8.Bc3 e5 9.de4 ed4 10.Qd4 Qd4 11.Bd4+–) 8.de4 cd4 9.e3 de3 (9...Qd6 10.Qd4 Rb8+–) 10.Bb5 (10.Bb5 c6 11.Bc6 Qd7 12.Qd7) 1–0. DEFFM – fauchs, freechess.org, 2018.

4.a3 e5

5.b5 e4 6.bc6 ef3 7.ef3 =.

5.d3 a6 6.c3 =.

5.d3 b5 6.c3 Bb7 =.

5.d3 b5 6.g3 a5 7.Bg2 Be6 8.c3 =.

5.d3 b5 6.g3 Nf6 7.Bg2 e4? (better is 7...Be6=) 8.de4+/– Ne4? (better is 8...Be6+/–) 9.Nd4+– (9.Bd4?! a5 10.Qd3 Nd6+/–) +–. nbh999 – Jan van Dijk, ChessWorld.net, 2003.

5.e3 b5?? 6.Bb5 Qd5? (6...Bd7 7.Qe2 de3 8.Qe3+–) 7.Qe2 (7.c4 dc3 8.Nc3 Qd6 9.Ne5 Bd7 10.Nd7 Qd7+–) 7...e4? (7...Nge7 8.Bc4 Qd6 9.Ng5+–) 8.Nd4 (8.ed4 Bd7 9.Nc3 Qe6 10.Ne4 Nge7+–) 8...Nge7 (8...Bd7+–) 9.Nc3. nbh999 – xadrez, ChessWorld.net, 2003.

5.e3 Bd6 6.ed4+/– e4 7.Qe2 Qe7 8.Ne5 Ne5?? (better is 8...a5+/–) 9.de5+– Be5 10.Be5 (better is 10.Qb5 Kd8 11.Qe5 Qe5 12.Be5+–) 10...Qe5= 11.Nc3 Nf6 12.Qb5 Qb5 13.Bb5 c6 14.Be2 0–0 15.0–0 Be6 16.d3 ed3 17.Bd3 b5 18.Ne4 Ne4 19.Be4 Bd5 20.Bd5 cd5 21.Rfd1 Rfd8 22.Rd4 a6 23.Rad1 Kf8 24.Rd5 Rd5 25.Rd5 f6 26.Rd6 Ke7 27.Rb6 h5 28.h4 g5 29.hg5 fg5 30.g3 Rc8 (better is 30...Kf7!?+/–) 31.Ra6+– Rc2 32.Rb6 Rc3 33.Rb5 Ra3 34.Rg5 Rb3 (34...Ra4+–) 35.b5 Kd6 36.Rh5 1–0. Mr.Oldenslo – Baron wd von Blanc, ChessWorld.net, 2012.

5.e3 de3 6.fe3 e4 =+.

4.b5 Na5

5.d3 c5 6.c3 dc3 7.Nc3 (7.Bc3 Nf6+=) 7...b6 (7...Nf6 8.e3+=) 8.g3 Nf6 9.Bg2 Bb7 10.0–0 (10.Rc1 e5+=) 10...e6 11.Qc2 Be7 12.Rfd1 Bf3 (12...a6!?=) 13.Bf3+– Rb8 (13...Rc8 14.Rac1+=) 14.d4 (14.Ne4 0–0+–) 14...cd4 15.e3 e5 (15...0–0 16.Rd4 Qc7 17.Rc1+–) 16.ed4 ed4 17.Ne4 Bc5?? (better 17...Rc8 18.Qe2 Ne4 19.Qe4 0–0 20.Bd4 Qc7+–) 18.Nc5+– bc5 (18...Rc8 19.Qe2 Qe7+–) 19.Qc5 Rc8 (19...Rb6 20.Rd4 Nd7+–) 20.Re1 Kd7 21.Qd4 Kc7 22.Qa7 Kd6 (22...Nb7 23.Rac1 Kd7 24.Qb7 Qc7 25.Rcd1 Nd5 26.Rd5) 23.Rad1 Nd5 24.Rd5 1–0. Pierre – Guest578, internet, 2020.

5.Bd4 a6 6.a4 b6 7.e3 e6 8.Ne5 Ne7?? 9.Qh5 Ng6 10.Nf7! Kf7 11.Qf3 Ke7 12.Qa8 Bb7 13.Qd8 Kd8 14.ba6 Ba8 15.f3 c5 16.Bc3 e5 17.Na3 Be7 18.Bd3 Nh4 19.Rb1 Kc7 20.Be5 Kd8 21.Rb6 Nc6 22.a7 Kd7 23.Bb5 Rc8 24.Nc4 Nf5 25.Rc6! Bc6 26.Bb8 (26.Bb8 Bh4 27.Ke2+–) 1–0. michaelbuss – GarrieD, ChessWorld.net, 2006.

5.Bd4 c5 6.bc6 Nc6 7.Bb2 Bg4 8.e3 (8.Nc3 e5+–) 8...e6 9.h3 Bh5 10.c4 (10.Be2 Nf6+–) 10...Nf6 11.Be2 Bc5 (11...Bb4 12.0–0+–) 12.Nc3 (12.d4 Bb4 13.Bc3 Be7+–) 12...Bg6 (12...e5 13.0–0 0–0 14.d4 ed4 15.Nd4 Be2 16.Nce2+–) 13.0–0 Ne4 (13...Bd3 14.Qb3 Be2 15.Ne2+– (15.Qb7? Bf3 16.gf3 Ne5–+)) 14.d3 (14.Ne4 Be4 15.Bg7 Rg8+–) 14...Nc3+– 15.Bc3 Be7 (better 15...0–0!?+–) 16.Bg7+– Rg8 17.Bc3 Bf5 (17...Qc7 18.Qb3+–) 18.Kh1 Bf6 19.Bf6 Qf6 20.Rg1 (20.Qb3 e5+–) 20...Qh6 (20...e5 21.d4+–) 21.Nh2 (better 21.d4+–) 21...Bh3? (better 21...Rd8+–) 22.gh3 Rg1 (22...0–0–0 23.Rg8 Rg8 24.Qf1+–) 23.Qg1 Ke7 (23...0–0–0 24.Qg2+–) 24.Qg3 (24.Qg3 Rd8 25.d4+–) 1–0. DEFFM – mingmang, freechess.org, 2016.

5.Bd4 c6 6.a4 e6 7.e4 Bb4?? strolling merrily down the path to disaster (better 7...Nf6 8.Nc3 c5+–) 8.Bg7+– f6 (8...Nf6 does not solve anything 9.Bh8 Ne4 10.Bd3+–) 9.Bh8 Bd7 10.e5 Qe7 11.ef6 (11.c3!? keeps an even firmer grip 11...Bc5+–) 11...Nf6 12.Bf6 Qf6 13.c3 Bc5 14.Qc2 (better 14.d4 makes it even easier for White 14...Be7+–) 14...cb5 (14...e5 cannot change what is in store for ? 15.Qh7 0–0–0 16.Qh4+–) 15.Bb5 (15.ab5 seems even better 15...Bb6 16.Qh7 Rc8+–) 15...Bb5 (15...Qf5 doesn't get the bull off the ice 16.Bd3 Qg4 17.Bh7 Qg2 18.Qg6 Qg6 19.Bg6 Ke7 20.Ne5+–) 16.ab5 Nc4 17.Qh7 0–0–0 18.0–0 (18.d4 seems even better 18...Bb6+–) 18...Rh8 19.Qe4 Nd6 20.Qg4 Nf5 (20...Bb6 hardly improves anything 21.Na3+–) 21.d4 (better 21.Qc4 makes sure everything is clear 21...b6 22.d4 Nd6+–) 21...Bd6 (21...Bb6 doesn't improve anything 22.Nbd2+–) 22.Nbd2 1–0. AvImd (1775) – Bekmorkt (1765), lichess.org, 2020.

5.Bd4 c6 6.e3 Bd7 7.a4 e6 8.Be2 cb5 (8...f6!?+/–) 9.ab5+– (9.Bb5?! Nc6+/–) 9...b6 10.0–0 Nb7 (10...f6 11.Bc3+–) 11.c4 (11.Ne5 Nf6+–) 11...Bc5?? (better is 11...f6+–) 12.Bg7 1–0. overtoom – hanslvb, gameknot.com, 2014.

5.Bd4 c6 6.e3 f6 7.c4 e5 8.Bb2 Be6 9.Qa4 cb5 10.cb5 Bd7 (10...Be7!?+–) 11.Nc3 Rc8 12.Qh4 (better 12.Be2 Ne7 13.0–0+–) 12...Nh6+– 13.Be2 Nf5 14.Qh5?? (better 14.Qa4+–) 14...g6–+ 15.Qg4 (15.Ne5 fe5 (15...gh5?! 16.Bh5 Ke7 17.Ba3 Nd6 18.Nf7–/+) 16.Qf3 Be6–+) 15...Ne3! 16.Qa4 (16.de3 Bg4 Discovered attack; 16.fe3 Bg4 Discovered attack) 16...Ng2 17.Kf1 Nf4 18.Ne4 (18.Re1–+) 18...Ne2 19.Ke2 (19.Nf6 Qf6 20.Ne5–+) 19...Rc4 20.Nf6 Qf6 21.Qa5 Re4 (21...Bg4 22.Qc3 Rc3 23.d4 Qf3 24.Kd2 Bb4 25.Bc3 Qc3) 22.Kf1 Qf3 (22...Qf3 23.Kg1 Qg4 24.Kf1 Qh3 25.Kg1 Rg4; 22...Bh3 23.Kg1 Rg4) 0–1. GuestXZNQ – GuestPSTD, freechess.org, 2019.

5.Bd4 c6 6.e4 Bd7 7.a4 e6 8.Nc3 c5 9.Be3 b6 10.Be2 Nf6 11.0–0 Be7 12.d4 c4 13.Ne5 Bb4 14.Na2 Qe7 15.Nb4 Qb4 16.Bh5 g6? (16...0–0 17.Bg5 Be8 18.Bf6 gf6+–) 17.Qf3 (17.Nd7?! Nh5 18.Ne5 f6+–) 17...Nh5 (17...gh5 18.Qf6 Rf8+–) 18.Qf7 Kd8 19.Qd7 1–0. lhs1701 (2015) – chessnut, ChessWorld.net, 2003.

5.Bd4 Qd4?? 6.Nd4 b6 (6...e5 7.Nb3 Nb3 8.ab3+–) 7.e3 Bb7 8.Qg4 (8.f4 e6+–) 8...Nf6 9.Qg3 Rc8 (9...Ne4 10.Qf4+–) 10.Bd3 (10.Nc3 g6+–) 10...g6 11.0–0 Bg7 12.Nc3 0–0 13.Nb3 (better 13.f4 c5 14.bc6 Nc6+–) 13...Nb3 (13...Rfd8 14.Na5 ba5 15.Qh4+–) 14.ab3 a5 (14...Ne8 15.e4 e5 16.Ra7+–) 15.ba6 Bc6 16.a7 Nh5 17.Qh4 Bf6 18.Qc4 Bb7 19.Be2 (19.Be4 c6+–) 19...Ng7 20.Bf3 Bf3 21.gf3 Ne6 22.Nd5 Bg7 23.Ne7 Kh8 1–0. GuestVVGT – GuestSCBD, freechess.org, 2020.

5.Bd4 Bd7 6.a4 a6 7.e3 c6 8.c4 (8.ba6 ba6 9.Bd3 e6+–) 8...ab5 9.ab5 cb5 10.cb5 e6 11.Be2 b6 (11...f6 12.e4+–) 12.0–0 f5 (12...f6+–) 13.Ne5 Qe7?? (13...Nf6+–) 14.Bh5 g6 15.Ng6 Qg7 (15...Qd6 16.Nh8 Ke7 17.Nf7+–) 16.Bg7 Bg7 17.Nh8 Kf8 18.Nf7 (better 18.Qf3 Rc8 19.Ra5 ba5+–) 18...Ba1 19.Nc3 (19.Qf3 Rc8 20.Nd6 Rd8+–) 19...Bc3 20.dc3 Nf6 21.Qd6 Kg7 22.Ne5 Nh5 1–0. GuestWRJS – GuestCBDL, freechess.org, 2017.

5.Bd4 Bd7 6.e3 b6 7.Bd3 e6 (7...c5 8.Be5+–) 8.Ne5 f6?? (8...Nf6+–) 9.Qh5 Ke7 10.Qf7 Kd6 11.Nc3 (11.Qd7?! Qd7 12.Nd7 Kd7+–) 11...fe5 (11...f5 12.Nd7 Qe7+–) 12.Be5! Ke5 (12...Ke5 13.Qf4 Mate attack) 13.Qf4 1–0. GuestFPYQ – llllMakllll, freechess.org, 2020.

5.Bd4 Bd7 6.e3 c6 7.a4 cb5 8.ab5+– a6 (8...Nf6 9.Be2+–) 9.ba6 ba6 10.Bc3 Nc6 11.Ba6 g6?? (better 11...Nf6+–) 12.Bh8 (12.Bh8 f6 13.Nc3+–) 1–0. GuestNQFR – lnsensible, freechess.org, 2019.

5.Bd4 Bd7 6.e3 Nf6 7.Be2 e6 8.a4 b6 9.Ne5 c5 10.bc6! Nc6 (10...Nc6 11.Nd7 Combination; 10...Bc6 11.Nc3 Decoy) 11.Nd7 (11.Nc3 Be7+–) 11...Qd7 12.Bf6 gf6 13.0–0 Bg7 (13...Rg8 14.d4+–) 14.d4+– 0–0 15.Nc3 Rac8 16.Ba6 Rc7? (better 16...Rcd8+–) 17.Nb5+– Nb4 (17...Rcc8 18.Bc8 Rc8 19.Qd2+–) 18.Nc7 Qc7 19.Bd3 f5 (19...Rc8 20.Qd2 a5 21.Rfb1+–) 20.Qd2 Nd5 (20...Nc6 21.Rab1+–) 21.c4 White plans a5 21...Nf6 (21...Ne7 22.f4+–) 22.a5 Ng4 (22...Rd8 23.ab6 ab6 24.Qe2+–) 23.g3 Rd8 24.Rfb1 ba5 (24...Nf6 25.ab6 ab6 26.Ra6+–) 25.Qa5 Qe7 (25...Qa5 26.Ra5 Bh6 27.Kg2 Be3 28.fe3 Ne3 29.Kf3+–) 26.Qa7 Qg5 (26...Qa7 27.Ra7 Bh6 28.c5 Ne3 29.c6+–) 27.Rb8 Bf6 (27...Bh6+–) 28.Rd8 Bd8 29.Qb8 Kg7 30.h3 Ne3 (30...Nh6 31.Ra8 Be7 32.Be2+–) 31.h4 (31.fe3?! Qe3 32.Kg2 Qd2 33.Kh1 Qd3+=) 31...Qf6 (31...Qg6 32.Qd8 Qg4 33.Ra8+–) 32.fe3 f4 33.Ra8 1–0. DEFFM – RajaSakti, freechess.org, 2019.

5.Bd4 Be6 6.e3 Nc4 7.Bd3 Nd6 8.0–0 Nf6 9.a4 (9.Nc3 Bf5 10.Qe2 Bd3 11.Qd3 e6+–) 9...Bg4 (9...Nf5 10.Nc3+–) 10.Be2 (10.Nc3 g6+–) 10...h5 (10...Nf5 11.Bb2+–) 11.c4 (11.h3 Bf3 12.Bf3 Nd7+–) 11...Nde4 (better 11...e6+–) 12.d3 Nd6 13.e4 b6 (13...a6 14.Nbd2+–) 14.e5 Nde4 (14...Nf5 15.Bc3 Ng8+–) 15.de4 Ne4 16.Qd3 Nc5 (16...Bf5 17.Qe3 g6 18.Nh4+–) 17.Qc3 (better 17.Qe3 e6 18.Rd1 Qc8+–) 17...Ne4 (17...e6 18.Rd1 Qc8 19.Nbd2+–) 18.Qe3 Bf5 (18...Nc5 19.Bc5 bc5 20.Rd1+–) 19.Bd3 g6 (19...Nd6 20.ed6 Bd3 21.de7 Be7 22.Qd3+–) 20.Be4 Bh6 (20...Be4 21.e6 f5 22.Bh8+–) 21.Bc6 Kf8 22.Qe2 Rb8 23.e6 fe6 24.Bh8 Qd6 25.Rd1 Qc5 26.Bd4 Qb4 27.Qe5 (27.Qe5 Qd6 28.Qh8 Kf7 29.Ng5 Bg5 30.Qg7) 1–0. DEFFM – GuestYZNX, freechess.org, 2019.

5.Bd4 Be6 6.e3 f6 7.Be2 Nh6 8.0–0 Nf5 (8...Bf7 9.Bc5+–) 9.Bb2 (9.Bc5 Bf7+–) 9...c6 (9...Nc4 10.Bc1+–) 10.a4 (10.Na3 Nd6+–) 10...Nc4 (10...Bf7 11.d4+–) 11.Bc4 (11.Bc1 cb5 12.ab5 Bf7+–) 11...Bc4 12.d3 Be6 (12...Bf7 13.e4 Nd6 14.e5+–) 13.Nd4 (13.c4 Bd7+–) 13...Nd4+– 14.Bd4 cb5 (14...Bf7 15.f4+–) 15.ab5+– b6 (15...a6 16.Nc3+–) 16.Nd2 (better 16.Nc3+–) 16...Bc8? (better 16...Bf7 17.Qf3 Bd5+–) 17.Qh5 g6 18.Qf3 Bd7 19.c4 (19.Nc4 Bb5 20.Nd6 ed6 21.Bf6 Qc8 22.Bh8 Qc6+–) 19...Bf5 (19...Qc8 20.h3+–) 20.Qc6 (20.Bb6 Qc8+–) 20...Bd7 21.Qb7 (21.Qd5 Bf5 22.Qd8 Rd8 23.Ra7 Rd6+–) 21...Rc8 (21...Rb8 22.Qa7 e5 23.Bb2+–) 22.Ra7 Bh6 (22...Rb8 23.Qe4 Bg7+–) 23.Bb6 0–0 (23...Rb8 24.Bd8 Rb7 25.Rb7 Kd8+–) 24.Bd8 Rcd8 25.Qd5 e6 26.Qf3 (better 26.Qd6 Rf7 27.Ne4 f5+–) 26...Be8 27.b6 (27.Ne4 Bg7 28.Nc5 Rf7+–) 27...Rd3 28.Ne4 f5 29.Nf6! Rf6 30.b7 Rd8 (30...Rb3 31.Qd1 Rb7 32.Rb7+–) 31.Ra8 Rb8 1–0. GuestHFSP – GuestLQXZ, freechess.org, 2016.

5.Bd4 Bf5 6.c4 Nc4+= 7.e4 Be4? (better 7...Be6+=) 8.Bc4+– e6 (8...Bf3 9.Qf3 Qd4 10.Bf7 (10.Qf7?! Kd7+–) 10...Kd8 11.Qb7+–) 9.Bc3 (9.Be5 Nf6+–) 9...Nf6 10.0–0 Bc5 11.d3 Bd5 (11...Bf5 12.Qc2+–) 12.Bd5 Nd5 (12...Qd5 13.Bf6 gf6 14.Nc3+–) 13.Bg7 Rg8 14.Be5 Bd6 15.d4 (15.Qa4 Be5 16.Ne5 Qg5+–) 15...Be5 (15...f6 16.Bd6 Qd6 17.Nbd2+–) 16.de5 (16.Ne5?! Nf4 17.g3 Qd4 18.Qd4 Ne2 19.Kg2 Nd4+–) 16...Qd7 (16...f5 17.Qd2+–) 17.Qa4 0–0–0 18.Qa7 Qb5 19.Nbd2 Qb6 (19...Rg4 20.a4 Qa6 21.Qc5+–) 20.Qa8 Kd7 21.Qa4 Ke7 (21...Qc6 22.Qh4+–) 22.Qh4 Kd7 (22...Ke8 23.Qh7 Rg6 24.Rab1+–) 23.Rab1 Qa6 (23...Qa7 24.Ne4 Ke8 25.Rfd1+–) 24.Qh7 (24.Ne4 Ke8+–) 24...Rdf8 (24...Ke7 25.Qh4 Ke8 26.Ne4+–) 25.Qc2 (better 25.Ne4 Ke8+–) 25...Nf4 (25...Ra8 26.Ne4 Ke7 27.Rfd1+–) 26.Ne4 Rg2 27.Kh1 Qd3 (27...Kc8 28.Nd6 Kb8 29.Nb7 Ka8+–) 28.Nc5 (28.Nc5 Ke8 29.Nd3+–) 1–0. GuestVSMQ – GuestSZXB, freechess.org, 2018.

5.Nd4 Nc4+= 6.Bc3 e5 7.Nb3 Bg4 8.d3+/– Nd6 9.Be5 Nb5 10.c4 Nd6 11.Nd4 f6 12.Qa4?? Qd7?? 13.Qd7+/– Kd7 14.Bd6 Bd6+= 15.f3 Be5 16.e3 Re8 17.Kd2 Be6 18.Nc3 Kc8 19.Ne6+/– Re6? 20.c5?? c6? 21.d4+– Bc7 22.Bc4 Re8 23.d5 cd5 24.Nd5 Ba5 25.Ke2+– Rd8 26.Rad1 Nh6 27.Ne7 Kb8 28.Rb1 Rd2+/– 29.Kf1 Kc7 30.Bd5 b6= 31.cb6 ab6 32.e4+= Kd6 33.Nc6 f5 34.Na5 ba5 35.Rb6 Kc5 36.Rc6 Kb5 37.Rc1 Rd8 38.Rb1 Kc5= 39.Rc1 Kb5 ½–½. Wall,Bill – Bell,Ray, Statesville, NC, 1979.

5.Nd4?! e5 6.Nb3 Nc4+–.

5.Nd4 e5 6.Nf3 e4 7.Bc3 Nc4 8.Ne5 Ne5 9.Be5 f6 10.Bb2 Bd7 11.e3 Ne7 12.Nc3 Bf5+/– 13.f3 ef3 14.Qf3 Bc2? 15.d3+– a6 16.Rc1 Bd3 17.Rd1 ab5 18.Bd3 Qc8 19.Nb5 Nc6 20.Qh5 g6 21.Bg6! Ke7 22.Qc5 Ke6 23.Qc4 Ke7 24.Qf7 1–0. pierre – vixy, internet, 2010.

5.Bd4 b6

6.e3 Bb7 7.Be2 Nf6 8.0–0 (8.Nc3 e6+–) 8...h6 (8...e6 9.Ne5+–) 9.d3 (9.Nc3 e6+–) 9...g5 (9...e6 10.Nbd2+–) 10.Nbd2 (10.Ne5 Bg7+–) 10...Bg7 11.Ne5 (11.Nb3 Nb3 12.ab3 0–0+–) 11...h5 (11...a6 12.a4+–) 12.Nb3 (12.Bf3 g4 13.Bb7 Nb7+–) 12...Nb3 13.ab3 Nd5? (better 13...g4+–) 14.Bh5 Rf8 (14...Be5 15.Be5 Nf6+–) 15.Nf7 Rf7 16.Bg7 Qd6 (16...Nf6 17.Bf6 ef6+–) 17.Qf3 0–0–0 (17...Qe6 18.c4 c5 19.h3+–) 18.Bf7 Kb8 19.Qg4 Nf6 (19...Nb4 20.Rfc1 Bd5 21.Bd5 Nd5 22.Ra4+–) 20.Qg5 Nd5 21.Be5 Qc5 22.e4 (better 22.Ra4 Qc2 23.Rd4 Qc5+–) 22...Nc3 23.b4! Qb4 24.Bc3 Qc3 25.Qe7 Rd6 26.e5 Rd4 27.Qe8 Bc8 28.Be6 Kb7 (28...Rd8 29.Qd8 a5 30.Qc8 Ka7 31.Qa6 Kb8 32.Bc8 Qc6 33.bc6 a4 34.Qb7) 29.Qc8 1–0. GuestLBRJ – GuestBGGH, freechess.org, 2020.

6.e3 c5 7.Bc3 Nb7 8.Be2 e6 9.0–0 Bd6?? (better 9...Nf6+–) 10.Bg7 Ne7 (10...f6 11.Bh8 Kf7 12.e4+–) 11.Bh8 f6 (11...Ng6 12.Bb2+–) 12.d4 (better 12.Bf6 Qc7+–) 12...Kf7 13.Bf6 Kf6 14.e4 Kf7 (14...cd4 15.Qd4 e5 16.Qe3+–) 15.Ng5 Kg7 16.e5 Bc7 17.Qd3 (17.Bc4!? cd4 18.f4 Nc5+–) 17...Nf5 18.g4 (better 18.Nf3 Nd4 19.Nd4 cd4 20.Qg3 Kh8 21.Rd1+–) 18...Qg5 19.Kh1 (19.c3 h5 20.Kh1 hg4 21.Bg4 cd4+–) 19...Ne7? (better 19...Nd4 20.f4 Qg6=) 20.f4 Qg6 Black fights for the Initiative 21.Qg6 hg6 (worse 21...Kg6 22.Bd3 Kg7 23.c3+–) 22.Nd2 (better 22.c3!?+–) 22...cd4+– 23.Ne4 Nc5 24.Nc5 (24.Bf3 Bb7 25.Ng5 Bf3 26.Rf3 a6+=) 24...bc5= 25.a4 (25.Bf3!? Rb8 26.a4=) 25...Bb7=+ 26.Kg1 a6?? (better 26...Rf8 27.Bd3 Ba8=+) 27.Bf3?? (better 27.b6 Bd8 28.a5+–) 27...Bf3–/+ 28.Rf3 ab5 29.Rfa3 ba4 (29...b4 30.Rf3–+) 30.Ra4–/+ Ra5?? (better 30...Rf8 31.Ra7 Nd5–/+) 31.Ra5+– Ba5 32.Ra5 Nc6 (32...Nd5+–) 33.Rc5 Nb4 34.c3 (better 34.Kf2!? d3 35.c3 d2 36.Rc7 Kf8+–) 34...dc3 35.Rc3 Nd5 36.Rf3 Kf7 37.Kg2 Nb6 38.Kg3 Nc4 39.Kh4 Nd2 40.Rf2 Ne4 41.Re2 Nc3 42.Rc2 Ne4 (42...Nd5 43.Rb2+–) 43.Rc7 (43.g5 Kf8+–) 43...Kg8 (43...Kf8 44.Rc4 Nd2 45.Rc8 Ke7 46.Rc7 Ke8 47.Kg5+–) 44.Re7 g5 (44...Nc5 45.Kg5 Kf8 46.Kf6 Ne4 47.Ke6 Nc5 48.Kd6 Ne4 49.Kd7+–) 45.fg5 Ng5 (45...Nf2+–) 46.Kg5 Kh8 (46...Kh8 47.Kg6 Kg8 48.Re8; 46...Kf8 47.Kf6 Kg8 48.Re8 Kh7 49.h4 Kh6 50.Rh8). aravind555 – pero123, lichess.org, 2019.

6.e3 c5 7.bc6! Nc6 8.Bb5 Bd7 9.Bb2 e6 10.0–0 Bd6?? (better is 10...Nf6+/–) 11.Bg7+– 1–0. Fournier,Frederic (1955) – therumanboy, Owl21.com, 2009.

6.e3 f6 7.Be2 e5 8.Bc3 Nb7 9.0–0 Ne7 10.d4 Ng6? (better is 10...e4!? 11.Nfd2 Nd6+–) 11.de5 Ne5 12.Qd8 (12.Ne5 Qd1 13.Rd1 fe5 14.Be5 Nd6+–) 12...Nd8 13.Ne5 fe5 14.Be5 Ne6 (14...c6 15.Rd1+–) 15.c4 Bb7 16.Bg4 Ng5 17.Bc7 Bc5 18.Bf4 (18.Rd1 Rf8+–) 18...Ne4 19.Bf3 0–0 20.Be4 Be4 21.Nc3 Bb7 22.Rad1 Rad8 23.Rd8 Rd8 24.Rd1 Rd1 25.Nd1 Bc8 26.Nc3 a6 27.a4 ab5 28.ab5 Be6 29.Nd5 Kf7 30.Bc7 Bd5 31.cd5 Kf6 32.e4 g5 33.Kf1 h5 34.f3 g4 35.Ke2 gf3 36.gf3 Ke7 37.h3 Kd7 38.Bf4 Ke7 39.Be3 Kd6 40.Kd3 (40.Kd3 Bb4 41.Bb6+–) 1–0. Fournier,Frederic (1790) – cubanigger (1755), Active, 2007.

6.e4 Bb7 7.Bd3 Nf6 8.e5 (8.Nc3 e6+–) 8...Nd5 9.Be4 (9.Nc3 Nf4 10.Bf1 g6+–) 9...e6 10.0–0 Be7 11.d3 0–0 12.c4 Nf4 13.Bb7 Nb7 14.Nc3 Bc5 (14...Nc5 15.Bc5 bc5 16.d4+–) 15.Bc5+– Nc5 (15...bc5 16.Ne2 Ng6 17.Qd2+–) 16.d4 Ncd3 (16...Nd7 17.g3 Ng6 18.Qe2+–) 17.Qb1 h6? (17...a6 18.ba6 Ra6+–) 18.Rd1 f6 (18...a6 19.ba6 Ra6 20.Rd3 Nd3 21.Qd3+–) 19.Rd3 fe5 (19...Nd3 20.Qd3 a6 21.Re1+–) 20.Ne5 Nd3 21.Qd3 (21.Nd3?! Qd4 22.Qc2 Rad8+–) 21...Qf6 (21...a6 22.f3+–) 22.Qe2 Rad8 (22...Qf5 23.Nc6 Qf6 24.c5+–) 23.Ne4 Qf5 24.Nc6 Rd7 25.Ng3 Qg5 (25...Qf6 26.Rd1+–) 26.Qe6 Rff7 (26...Rdf7 27.Ne4 Qh5 28.Ne5+–) 27.Ne5 Rde7 (27...Qe7 28.Qg4+–) 28.Nf7 Re6 (28...Rf7 29.Re1+–) 29.Ng5 hg5 1–0. rcm06 (2165) – cubanisimo, gameknot.com, 2016.

5.Bd4 Nc4

6.e3 c5? 7.Bc5 (7.bc6!? Nd6 8.cb7 Bb7+–) 7...Nb2 8.Qc1 Nc4 (8...Na4 9.Bd4 Nh6+–) 9.Bc4 Bg4 (9...Nf6 10.Qa3+–) 10.0–0 (better 10.Ne5 Be6 11.Be6 fe6+–) 10...Bf3 11.gf3 e6 (11...Rc8 12.Qa3 e6 13.Bf8 Rc4 14.d3+–) 12.Bd4 (better 12.Bf8 Kf8 13.Nc3 Nf6+–) 12...f5 (12...Bd6 13.Qd1 Nf6+–) 13.Be6 g6 (13...Qg5 14.Kh1 Qh5+–) 14.Bh8 (14.Bh8 Qg5 15.Kh1+–) 1–0. GuestWNLT – GuestMHJT, freechess.org, 2019.

6.e3 Nd6 7.Bb2 Nf6 8.d4 Bg4 9.Be2 e6 10.c4 Be7 11.Nc3 0–0 12.h3 Bh5 13.0–0 c6 14.c5 Nde4 15.Ne4 Ne4 16.Qc2 Bg6 17.Bd3 f5 (better is 17...Ng5!? 18.Ng5 Bd3 19.Qd3 Bg5+/–) 18.Ne5 Bf6 (18...Be8 19.Be4 fe4 20.Qe4+–) 19.Ng6 hg6 20.Be4 fe4 21.Qe4 cb5 (21...Qd5 22.Qd5 ed5 23.Bc3+–) 22.Qe6 (worse is 22.Qg6 Rc8+–) 22...Kh8 23.Rab1 a6 24.Qb3 Qd7 25.Rfd1 Rad8 26.Bc3 Rfe8 27.Ba5 Rc8 28.Bb6 Qf5 29.Qd3 Qd5 30.Qe2 Bd4 31.Qc2 Rc5 32.Bc5 Qc5 33.Qg6 Bf6 34.Qe8 Kh7 35.Rbc1 Qf5 36.Qd7 Qg6 37.Qd3 a5 38.Qg6 Kg6 39.Rd7 b6 40.Rd6 b4 41.Rb6 a4 42.Rb4 Bc3 43.Rc3 1–0. Fournier,Frederic (1685) – fokifoki (1610), ChessOK.com, 2013.

6.e3 Nd6 7.Nc3+–.

6.e3 Nd6 7.c4 Bg4 8.Nc3 Nf6 9.Be2 e6+/– 10.h3 Bh5 11.0–0 Be7 12.Ne5 Be2+/– 13.Qe2 Nf5 14.Qf3 Nd4 15.ed4 Rb8 16.Qe3 0–0 17.f4 Bb4 18.g4 Nd7 19.Ne4 f6 20.Nf3 f5 21.Neg5+– fg4 22.hg4 Qe8 23.Ne6 Rf7 24.Nc7 Qe3?! 25.de3 Rc8 26.Rab1 Bd6 27.Nd5 Rc4 28.Rfc1 Rc1 29.Rc1 Rf8 30.Ne5 Ne5 31.de5 Bb8 32.e6 Bd6 33.f5 Re8 34.e4 Be5 35.a4 h6 36.Kf2 Kh7 37.Kf3 g5 38.Rc7! Bc7 39.Nf6 Kh8 40.Ne8 Bd8 41.f6 Kg8 42.e5 Kf8 43.Nd6 b6 44.Nf5 Bc7 45.e7 Ke8 46.Ng7 Kf7 47.e8Q 1–0. xadrezpg (2290) – grahamtrue (2165), net–chess.com, 2010.

6.e3 e5 7.Bc4 ed4 8.Nd4 c6? (better 8...Nf6+–) 9.bc6 bc6 10.Nc6 Qb6 (10...Qc7 11.Qf3 Nf6 12.Ne5+–) 11.Qh5 (better 11.Nc3 Nf6 12.Ne5+–) 11...g6 (11...Qc7 12.Ne5 Nf6 13.Bf7 Kd8+–) 12.Qe5 Be6 13.Nd4 Qb2 (13...Bg7 14.Qg7 Bc4 15.Qh8 Qb2+–) 14.Bb5 Kd8 15.Nc6 Kc8 16.Qb2 1–0. DEFFM – GuestQFTY, freechess.org, 2019.

6.e3 Be6 7.Nc3 Nf6 8.Bc4 Bc4 9.Ne5 Bd5 10.0–0 e6 11.Nd5 ed5 12.Qf3 Be7 13.Rac1 0–0 14.Qf5 c5? 15.bc6+– bc6 16.Nc6 Qd6 17.Ne7 Qe7 18.c4 Ne4 19.cd5 Nd2 20.Bc5 Qe8 21.Rfd1 Ne4 22.Bf8 Qf8 23.Qe4 Qd6 24.Rc6 Qa3 25.d6 Qa2 26.Rc2 Qa6 27.Qa8 Qc8 28.Qc8 (28.Rc8?!=) 1–0. pierre – ezhil, internet, 2008.

6.e3 Bg4 7.Bc4 Bf3 8.Qf3 Qd6 9.Qb7 Rd8 10.Qc6 (better 10.b6 c6 11.ba7 e6+–) 10...Rd7 (10...Qc6 11.bc6 e6 12.Ba7+–) 11.Qd6 (11.Ba7 Qc6 12.bc6 Rd8+–) 11...Rd6 (11...cd6 12.b6 ab6 13.Bb5+–) 12.0–0 (12.Ba7 e5+–) 12...Nf6 (12...Rd8 13.Ba7 e5 14.f4+–) 13.Nc3 (13.Ba7 e5+–) 13...Nd7 (13...e5 14.Be5 Rd7 15.Bf6 gf6 16.d4+–) 14.Ba7 c5 (14...Rd2 15.Bd3 Ne5 16.Nb1 Rd3 17.cd3+–) 15.Ne4 Rh6 16.Bc5 (16.Nc5 e6 17.Nd7 Bd6+–) 16...f5 (16...Rh4 17.f4 f5 18.b6 Nb6 19.Bb6 fe4 20.a4+–) 17.b6! fe4 (17...Nb6 18.Bb5 Pinning) 18.Bd4 (better 18.Bb5 Kd8 19.Bd7 e5+–) 18...Kd8 (18...e5 19.Bc3 Rb6 20.Rfb1+–) 19.a4 (better 19.b7 Kc7 20.Rfb1 Kb8+–) 19...e5 20.a5 (better 20.Bc3!? Nb6 21.Bb3 Nd7+–) 20...ed4 21.b7 (21.ed4 Bb4 22.c3 Ba5 23.Ra5 Nb6+–) 21...Bb4 (21...Bd6 22.h3 Kc7+–) 22.a6 Bd2 (22...Kc7 23.Bd5 Nc5+–) 23.a7 de3 (23...Ke7 24.a8Q Rb8+–) 24.a8Q (24.b8Q Ke7 25.Qh8 Nb6 26.Qg7 Kd6 27.Qd4 Kc7 28.Qc5 Rc6 29.Qe7 Nd7 30.a8Q ef2 31.Rf2 Be3 32.Ra7 Ba7 33.Qa7 Kc8 34.Qed7) 24...Kc7 25.Qh8 ef2 26.Rf2 Bc3 (26...Kc6 27.Qc8 Kd6 28.Ra6 Ke5 29.Qd7 Ra6 30.Qd5) 27.Qc8 Kd6 28.Ra6 Ke7 (28...Ke5 29.Qd7 Ra6 30.Qd5) 29.Rh6 (29.Rf7) 29...gh6 (29...Bf6 30.Rff6! gf6 31.Rh7 Kd6 32.b8B Nb8 33.Qc7) 30.Be6! Ke6 (30...Ke6 31.b8Q) 31.b8Q Bd4 (31...Bf6 32.Qg8 Ke7 33.Qge8) 32.Qe8 (32.Qc6 Ke7 33.Qcd6) 32...Kd5 33.Qd7 Kc4 34.Qbb5 Kc3 35.Qdc6 (35.Qb3) 35...Bc5 36.Qcc5 1–0. GuestSYBB – GuestJJJJ, freechess.org, 2017.

6.e3 Bg4 7.h3 Bf3 8.Qf3 (8.gf3?! e5 9.Bc3 Qd5+–) 8...f6 (8...Nd6+–) 9.Bc4 e5 (9...Qd7 10.Qb7 Rd8 11.0–0+–) 10.Be5 fe5 (10...Nh6 11.Bd4 Bd6 12.Qb7 Rb8 13.Qa7 Nf5+–) 11.Qf7 1–0. Janek – Viatre, internet, 2017.

5.Bd4 Qd5

6.Nc3 Qc4 7.e4 Qe6 8.d3 Nf6 9.Be2 b6 10.0–0 Bb7 11.Qd2 c5 12.Be3 Ng4 13.Bf4 Nf6 14.Ng5 Qd7 15.e5 Ng4?? 16.e6! fe6 17.Bg4 (17.Bg4 Qd4 18.Ne6+–) 1–0. Wall,Bill – Jacobsen,JP, internet, 1998.

6.Nc3 Qd6 7.e3 Bg4 8.Be2 b6 9.0–0 f6 10.a4 e5+= 11.Ne4 Qd5= 12.Nc3 Qd8 13.Be5 fe5 14.Ne5 Be2 15.Qe2 Nf6 16.Ne4 Ne4–/+ 17.Qh5 g6 18.Ng6 hg6 19.Qg6 Kd7 20.Qf5 Ke8 21.Qe4 Be7–/+ 22.Qg6 Kf8 23.d3 Rg8 24.Qh6 Rg7 25.Qh8 Kf7 26.Qh5 Kg8 27.e4 Rg5 28.Qh3 Qf8 29.f4=+ Rg7 30.Qf3 Bc5–/+ 31.Kh1 Re8 32.Rad1 Re6 33.d4= Be7 34.e5 Reg6 35.g3 Nc4?? 36.f5+/– Rg3?? 37.hg3+– Rh7 38.Kg2 Qh6 39.Qd5 Kf8 40.Qc4 Qh2 41.Kf3 Qh5 42.Ke4 Qg4 43.Rf4 Qd1 44.Qc7 Qh1 45.Kd3?? Qd1= 46.Kc3?? Bb4! 47.Kb4 Rc7 48.c4 Qd2 (48...Qd2 49.Kb3 Qd3 50.Kb2 Rc4 51.Rf2 Rb4 52.Ka2 Qb3 53.Ka1 Qb1) 0–1. Trkn – rts28, itsyourturn.com, 2000.

6.e3 c6 7.bc6 bc6 (7...Nc6 8.Nc3 Qd8 9.Bb5+–) 8.Nc3 Bf5?? (better 8...Qd6+–) 9.Nd5 cd5 1–0. GuestBGGS – GuestFBCV, freechess.org, 2017.

6.e3 Bd7 7.Nc3+– Qe6 (7...Qd6 8.Be5 Qc5 9.e4+–) 8.Be2 (8.Bc5 a6+–) 8...Nf6 (8...Nh6 9.Ne5+–) 9.0–0 Ng4 10.Ng5 Qg6 11.Bg4 (better 11.f4 h5 12.Nf3+–) 11...Bg4? (better 11...Qg5 12.Bd7 Kd7+–) 12.Qg4 f6 (12...h6 13.Nd5 Qd6 14.Nf7 Kf7+–) 13.Nd5 Qg5 14.Nc7 Kf7 15.Qg5 fg5 16.Na8 e6 17.Ba7 Bd6 (17...Bb4 18.Nb6 Bd2 19.Rad1+–) 18.Nb6 Bc5 19.d4 Bb6 20.Bb6 Nc4 21.Bc5 Rc8 22.a4 b6 23.Bb6! Nb6 24.a5 Nc4 (24...Nd7 25.Rfc1+–) 25.b6 Ra8 (25...Nd6 26.a6 Ke7 27.Rfb1+–) 26.b7 Rb8 27.a6 Nb6 28.a7 Rb7 29.Rfb1 Ke7 30.Rb6! Rb6 (30...Rb6 31.a8Q Combination) 31.a8Q Kf6 32.Qd8 Kg6 33.Qb6 (33.Qb6 Kh6 34.Qe6 Kh5 35.Ra6 g4 36.Qf5 Kh4 37.g3 Kh3 38.Qh7) 1–0. DEFFM – anappara, freechess.org, 2018.

6.e3 Bg4 7.Be2 f6 8.Bb2 (8.Nc3!? Qd6+/–) 8...e5 9.Nc3 Qe6 (9...Qd6 10.d4+/–) 10.0–0 (10.Ng5 Qf5 11.Bg4 Qg5+–) 10...h5 11.Ne4 h4? (11...0–0–0+/–) 12.g3?? (12.Nfg5 Be2 13.Ne6 (worse is 13.Qe2 fg5 14.Ng5 Qd5+=) 13...Bd1 14.Nc7 Kd7 15.Na8 Bc2 16.Nc5 Bc5 17.Rfc1=) 12...hg3 13.fg3 Nh6 (13...Bh3 14.Rf2 Nc4 15.Qc1=) 14.Nf2 Bh5? (better is 14...Bf3 15.Bf3 0–0–0+=) 15.Ne5?? (better is 15.Nd4 ed4 16.Bh5 Kd7 17.Bd4+–) 15...Be2–/+ 16.Qe2 Qe5?? 17.Be5+– fe5 18.Qh5 Nf7 19.Qf5 Bd6 20.Nd3 Nc4 21.Qf7 Kd8 22.Qc4 Rh3 23.Rf2 e4 24.Nf4 Bf4 25.ef4 Kd7 26.Qe4 Kd6 27.c4 Rg8 28.d4 g5 29.c5 Kd7 30.Re1 gf4 31.Rf4 Rgg3 32.hg3 Rg3 33.Kf2 Rc3 34.Qe7 Kc8 35.Rf8 1–0. Fournier,Frederic – franek10000, Active (5/0), 2005.

5.Bd4 e6

6.e3 Bd6?? 7.Bg7+– f6 8.Bh8 Qe7 9.Nd4 (9.d4 Bd7+–) 9...h6 (9...e5 10.Nb3 Nb3 11.ab3+–) 10.Qh5 Kd7 11.c4 (better 11.Bd3 Qf8 12.Qg6 Ke7+–) 11...Qh7 12.Be2 (12.c5 Be5 13.c6 Ke7 14.Bf6 Bf6 15.cb7 Nb7 16.Nc6 Kf8+–) 12...Qh8 13.Qf7 Ne7 14.Qe6 Ke8 15.Bh5 Kd8 16.Qf7 Qg8 17.Qf6 (17.Qg8!? Ng8 18.Bf7 Ne7+–) 17...Nc4 18.0–0 (better 18.Qh6 Be5 19.Bf3+–) 18...Be6 (18...Be5 19.Qh4 a6+–) 19.Ne6 Kd7 20.Bf7 Qh8 21.Nf8! Qf8 (21...Rf8 22.Qe6 Double attack (22.Bc4 Discovered attack; 22.Qh8 Decoy); 21...Qf8 22.Qe6 Double attack (22.Bc4 Discovered attack)) 22.Be6 Ke8 23.Qh4 (better 23.Qf8 Kf8 24.Bc4 Rc8+–) 23...Ne5 24.f4 N5g6 25.Qh5 White intends f5 (better 25.Qh3 Qf6 26.Nc3 Nf8+–) 25...Kd8 (25...Qf6 26.f5 Qa1 27.fg6+–) 26.f5 Ne5 27.f6 N7g6 (27...Nc8 28.d4 Nd7 29.Bd7 Kd7 30.e4+–) 28.Nc3 (28.d4 a6 29.de5 Ne5+–) 28...c6 (28...Qe8 29.Bd5 c6 30.Be4+–) 29.bc6 bc6 30.Rab1 (better 30.d4 Qe8 31.de5 Qe6 32.ed6 Qe3 33.Kh1 Qg5+–) 30...Kc7 (30...Qe8 31.Bf5 Nh8 32.Qe8 Ke8 33.Ne4+–) 31.Qh3 1–0. GuestVYQL – drana, freechess.org, 2017.

6.e3 Bd7 7.Be2 Bd6?? (better is 7...c5 8.Bc3 Nf6+–) 8.Bg7+– e5 (8...f6 9.Bh8 Kf7 10.c4+–) 9.Nc3 f6 10.Bh8 Ba3 (10...Qe7 11.Nd5 Qf7 12.c4+–) 11.Rb1 Be6 12.d4 Qd6 13.de5 Qd1 14.Bd1 f5 (14...fe5 15.Be5 Kd7 16.Ng5+–) 15.Ng5 Bc8 (15...Bc4 16.Bh5 Kd7 17.Nh7 a6+–) 16.Bh5 Ke7 17.Nd5 Kd8 18.Nf7 Kd7 19.Rd1 Ke6 20.Ng5 Kd7 21.Nf6 Ke7 22.Ng8 Kf8 23.Rd8 1–0. Janek – Bonnie, internet, 2016.

6.e3 Ne7 7.Bc3 c5 8.e4 c4? (better 8...f6!?+–) 9.Na3 Ng6 10.Nc4 Nc4 11.Bc4 Bc5 (11...Qc7 12.d3+–) 12.Bg7 a6 (12...Rg8 13.Bc3 Qc7+–) 13.Bh8 Nh8 14.ba6 Ng6 15.0–0 Nf4 (15...ba6 16.d4 Be7 17.g3+–) 16.d4 Bb4 (16...Bb6+–) 17.Rb1 Qc7 (17...Qe7 18.Qc1 Ng2 19.Kg2 ba6 20.Rg1+–) 18.Rb4 b6 19.Bb5 (19.g3 Ng6 20.Qd3 h6+–) 19...Kf8 20.Ra4 (20.Rc4 Qd8 21.Qd2 Ng6+–) 20...Kg8 21.Ne5 Qc3 22.Qc1 Bd7 23.Nd7 Ng2 24.Qg5 Kh8 25.Qf6 (25.Qe5 Kg8 26.Nf6 Kf8 27.Qg5 Qh3 28.Nd7 Ke8 29.Qf6 Qf5 30.ef5 Rc8 31.a7 Rc2 32.a8Q Rc8 33.Qc8) 25...Kg8 26.Qg5 Kh8 27.Qe5 Kg8 28.Nf6 Kf8 29.Nh7 Ke7 (29...Kg8 30.Nf6 Kf8 31.Qg5 Qh3 32.Nd7 Ke8 33.Nb6 Kf8 34.Nd7 Ke8 35.Qc5 Qh2 36.Kh2 Kd8 37.Rc4 Ra6 38.Qf8) 30.Qg5 (30.Qg5 Kd6 31.e5 Kc7 32.Qe7 Kc8 33.Qb7 Kd8 34.Qd7) 1–0. GuestGHVY – rockbeppe, freechess.org, 2020.

6.e3 Nf6 7.c4 Bb4? 8.a3?? (better 8.Qa4 c5 9.Bb2+–) 8...Bd6 9.c5 Be7 10.Qa4 (10.Bc3 b6 11.Ba5 ba5+–) 10...b6+– 11.c6 0–0 12.Be2 h6 13.0–0 Bd6 14.Qc2 Qe7 15.h3 (15.Ne5 Rd8+–) 15...e5 16.Bb2 Re8 17.e4 (17.d4 ed4 18.Bd4 a6+–) 17...Nh7 (17...a6 18.Nc3+=) 18.d3 Qf6 19.Nbd2 Ng5 20.Ng5 Qg5 21.Kh1 Be6 22.Nf3 Qg6 (22...Qf4 23.Qc1+–) 23.Qc3 (better 23.Ne5!? Be5 24.Be5 Bh3 25.Bg3+–) 23...Nb3 24.Rab1 Rad8 0–1. GuestRKDM – GuestKBJD, freechess.org, 2017.

6.e3 Nf6 7.c4 Nc4 8.Bc4 Bb4 9.Qb3 a5 (9...Qe7 10.Nc3+–) 10.a3 (better 10.ba6!? c5 11.Bb5 Ke7+–) 10...Bd6 11.Bf6 (11.Nc3!? 0–0+–) 11...Qf6 12.Nc3 0–0 (12...b6 13.Bd3 Bb7 14.Ke2+–) 13.0–0 (13.Bd3 e5+–) 13...b6 (13...Qg6 14.d4+–) 14.Ne4 Qe7 15.Nd6 Qd6 (15...cd6 16.Rac1+–) 16.Nd4 (16.Qc3 Bb7+–) 16...Bb7 (16...e5 17.Ne2+–) 17.f4 c5 (17...Rad8 18.Rac1+–) 18.bc6 Bc6 19.Nc6 (better 19.Qb6!? Rfc8+–) 19...Qc6 20.Bb5 Qd6 21.Rad1 (21.d4 Rfc8+–) 21...Rac8 22.Rf2 Rc6 (22...Rc7+–) 23.Bc6 (23.Bc6 Qc6 24.Rb1+–) 1–0. GuestRJRV – pgera, freechess.org, 2019.

6.e3 h6 7.Be2 Ne7 (7...Nf6 8.0–0+–) 8.a4 (8.0–0 f6+–) 8...b6 (better 8...f6!?+–) 9.Ne5+– f6 (9...Rh7 10.Bf3 Rb8 11.0–0+–) 10.Bh5 (10.Bh5 g6 11.Ng6 Ng6 12.Bg6 Kd7 13.Be4+–) 1–0. onur604 (2275) – itakeapillinibiza (2025), lichess.org, 2020.

5.Bd4 f6

6.Bb2 e5 7.e3 Bc5 8.a3 Ne7 9.Be2 0–0 10.0–0 Bg4 (10...e4 11.Nd4+/–) 11.h3 Bh5 12.d3 c6 13.bc6 Nac6 (13...Nec6 14.Nc3+/–) 14.c4 (14.Ne5!? Be2 15.Nc6 Bd1 16.Nd8 Bc2 17.Rc1 Rad8 18.Rc2+/–) 14...Qc7 15.Nbd2 Rad8 16.Qc2 Bg6 17.e4 (17.Nb3!? Bb6 18.c5+/–) 17...Na5 18.Rfd1 (18.Rfb1 Bf7+=) 18...b6 (18...Qb6 19.Rf1=) 19.Nb3 Nb7 (19...Nb3 20.Qb3 Nc6 21.Nh4+=) 20.Nc5 (20.d4!? ed4 21.Nfd4 Bd4 22.Nd4+/–) 20...Nc5+= 21.Bc3 Nb7 22.Bb4 Rfe8 23.Rac1 Nc6 24.Qb2 Nd4 25.Nd4 ed4 26.Bd2 Nc5 27.g3 h6 28.Bf1 Kh7 29.Bf4 Qc6 30.Qb5 Qb7 31.a4 Qe7 32.Rb1 Bf7 33.a5 g5 34.Bc1 ba5 35.Qa5 Nb7 36.Qa3 Qa3 37.Ba3+– Nd6 38.Bd6 Rd6 39.Rb7 Kg6 40.Ra7 Rb6 41.Rda1 Rc6 42.Kg2 Rec8 43.Rb7 h5 44.Raa7 g4 45.Rf7 gh3 46.Kh3 f5 47.Kg2 fe4 48.de4 Rf6 49.Rf6 Kf6+– 50.Bd3 Ke6 51.Ra6 Ke5 52.Ra5 Kd6 53.Rh5 Ke6 54.Rh6 Ke7 55.g4 1–0. Fournier,Frederic (1635) – vnvolgin, ChessOK.com, 2012.

6.e3 e5 7.Bc3 b6 8.d4 Bg4 9.h3 Bf3 10.Qf3 Ne7 11.de5 Nd5 12.ef6 Nc3 13.f7 Ke7 14.Nc3 c6 15.bc6 Qc7 16.Nd5 Kd8 17.Nc7 Kc7 18.Qg3 Kd8 19.0–0–0 Ke7 20.Qe5 Kf7 21.Qf5 Ke8 22.Qd7 1–0. marekt – put2geder, gameknot.com, 2001.

6.e3 e5 7.Bc3 b6 8.Ne5 fe5 9.Qh5 g6?? (better 9...Kd7+=) 10.Qe5+– Ne7 (10...Qe7 11.Qh8 Be6 12.Qd4+–) 11.Qh8 Bg4 (11...Bf5 12.d3+–) 12.Bg7 Kd7 (12...Kf7 13.Bf8 Qf8 14.Qh7 Ke8 15.Nc3+–) 13.Bf8 Qf8 (13...Bf5 14.Qd4 Ke6 15.Qd8 Rd8 16.Be7 Ke7 17.c4+–) 14.Qd4 (14.Qd4 Kc8 15.Qg4 Kb8 16.Be2+–) 1–0. GuestFJPK – GuestYYDJ, freechess.org, 2019.

6.e3 e5 7.Bc3 Nc4?? 8.Bc4+– 1–0. pereira – tqowa, internet, 2009.

6.e3 e5 7.Ne5 fe5+– 8.Qh5 g6?? (better 8...Ke7 9.Bc3 c5 10.Qe5 Be6+–) 9.Qe5+– Be7 (9...Qe7 10.Qh8 Be6 11.Nc3+–) 10.Qh8 Kf8 (10...Qd5 11.Bd3 Qf7+–) 11.Qg7 Ke8 12.Qg8 Kd7 13.Qd5 (13.Qh7!? c5 14.Bc5 b6+–) 13...Bd6 (13...Ke8 14.Qe5 c5 15.Bc3+–) 14.Be2 (better 14.Bc3 c6 15.Qf7 Qe7 16.Qe7 Ke7 17.Ba5 Be6+–) 14...c5 (14...c6 15.Qf7 Qe7 16.Qg8+–) 15.Bb2 (15.Bc3 Ke7 16.Qg5 Ke8 17.Qd8 Kd8 18.Ba5 Ke7+–) 15...Kc7 (15...Ke7 16.Qg5 Ke8 17.Qh6+–) 16.Bc3 Kb6 17.Be5 Be7 18.Nc3 Bf5 19.Na4 1–0. DEFFM – GuestCFXC, freechess.org, 2019.

6.e4 b6 7.c4 (7.Bc3 a6+–) 7...e5 8.Be3 Nb7 (8...Be6 9.Qc2+/–) 9.Be2 Nc5 10.d3 (10.Qc2 a6+–) 10...Ne7 (10...Bg4 11.0–0 Bf3 12.Bf3 Qd3 13.Qc1+/–) 11.0–0 Ng6 12.Ne1 (12.Nc3 Bd6+–) 12...Ne6 13.g3 (13.Nc3!?+/–) 13...Bc5+= 14.Nc3 Be3 (14...a6 15.Bc5 Nc5 16.Nc2+=) 15.fe3+/– 0–0 16.Nc2 Ng5 17.Nb4 Ne7 (17...Qd6 18.Nbd5+/–) 18.g4 (18.Bg4 Qd6 19.Nbd5 Nd5 20.Nd5 Bb7+/–) 18...Kh8 19.Qc2 Be6 20.Rad1 Qd7 21.Rf5 (21.d4 ed4 22.ed4 Bg4 23.Bg4 Qg4 24.Qg2 Qe6+/–) 21...g6 (21...Qd6 22.Nbd5 Nf5 23.gf5 Bd5 24.cd5 Rfe8+=) 22.Rf3?? (22.Rff1 Bg4 23.Bg4 Qg4 24.Qg2 Qh4+/–) 22...Bg4?? (better is 22...Nf3 23.Bf3 a5–/+) 23.Rg3+= Be6 24.Rf1 Kg7 (24...Bh3 25.Rf2+=) 25.h4 Nf7 26.Nbd5 Nd5 (26...Bd5!? 27.cd5 a6+=) 27.cd5+/– (worse is 27.Nd5 Bd5 28.ed5 a6+=) 27...Bh3 28.Rf2 f5? (better is 28...Nh6+/–) 29.Rh3+– fe4 (29...f4 30.Kg2 fe3 31.Re3+–) 30.Rg3 Nh6 (30...Nd6 31.de4 Rf2 32.Kf2+–) 31.de4 Rf2 32.Kf2 Rf8 33.Ke1 Qe7 34.Kd2 (34.Rh3!? Qd7 35.Rf3 Qe7+–) 34...Qh4 35.Rf3 Rf3 36.Bf3 Qf2 37.Be2 Ng4 (37...Kf8+–) 38.Nd1 Qg2 39.Qc7 Kh6 40.Qc4 (40.d6 Nf6 41.d7 Nd7 42.Qd7 Qe4+–) 40...Nf6 41.Kd3 (better is 41.Nc3!? Qh1+–) 41...Nd7 42.Kd2 Nc5?? (42...Nf6 43.Nc3 Qh1+–) 43.Nc3+– Qf2 (43...Qh3 44.a3+–) 44.d6 Qf6 45.Qd5 Nd7 46.Qc6 Qe6 47.Bc4 Qe8 (47...Qg4 48.Qb7+–) 48.Nd5 (48.Qc7 Kg5+–) 48...Qf7 (48...Qd8 49.Qc7 Qe8+–) 49.Nb6 (better is 49.Ne7 Qf2 50.Be2+–) 49...Qf2 50.Be2 Nb6 51.d7 (better is 51.Qc7!? Qf8 52.Ke1 Kg5+–) 51...Qf8 52.Qc7?? (better is 52.Kc2+–) 52...Qb4= 53.Kd1 Qb1 54.Kd2 Qb4 55.Kd1 Qb1 56.Kd2 Qb4 57.Kc2 Qa4?? (57...Qe4 58.Bd3 Qa4 59.Kb2 Qb4 60.Kc1 Qa3 61.Kd2 Qb4 62.Kd1 Qg4 63.Kc2 Qd7 64.Qe5 Qc8 65.Kd1 Qg4 66.Ke1 Qg1 67.Bf1=) 58.Kb2?? (better is 58.Kc1 Nd7 59.Qd7 Qa2 60.Bd3+–) 58...Qb4= 59.Kc1?? (better is 59.Kc2 Qa4 60.Kc1 Nd7 61.Qd7 Qa2 62.Bd3+–) 59...Qe1–+ 60.Bd1 Qe3 61.Kb2 Qd4 62.Kc1?? (better is 62.Ka3 Qd7 63.Qd7 Nd7 64.Kb4–+) 62...Qa1 (better is 62...Nc4 63.Kc2 Qe4 64.Kc3 Qe3 65.Kc2 Qd2 66.Kb3 Qb2 67.Kc4 Qc1 68.Kd5 Qc7–+) 63.Kd2 (63.Kc2 Qa2 64.Kd3 Qb1 65.Ke3 Nd7 66.Qd7 a6 67.ba6 Qb6 68.Kf3 Qa6+/–) 63...Qd4 64.Kc1 Qa1 (better is 64...Nc4 65.Kc2 Qe4 66.Kc3 Qe3 67.Kc4 Qc1 68.Kd5 Qc7–+) 65.Kd2?? (65.Kc2 Qa2 66.Kd3 Qa3 67.Ke2 Qa2 68.Ke3 Nc4 69.Qc4 Qc4=) 65...Qd4 (better is 65...Qb2 66.Ke1 Qb4 67.Kf2 Qd4 68.Kg2 Nd7–+) 66.Kc1–+ Nd7 (better is 66...Nc4 67.Kc2 Qe4 68.Kc3 Qe3 69.Kc2 Qd2 70.Kb3 Qb2 71.Kc4 Qc1 72.Kd5 Qc7–+) 67.Qb7? (better is 67.Bc2–+) 67...Nc5 68.Qe7 (68.Qd5 Ne4 69.Qd4 ed4–+) 68...Qa1 69.Kd2 Ne4 (worse is 69...Qa2 70.Bc2 Ne4 71.Ke3–+) 70.Ke3 (70.Ke2 Qa2 71.Ke3 Qd2 72.Ke4 Qd4 73.Kf3 Qd1 74.Kf2 Qd2 75.Kf1 Qf4 76.Ke2 Qc4 77.Ke3–+) 70...Qd4 71.Kf3 (71.Ke2 Qd2 72.Kf3 Qd3 73.Kg2 Qg3 74.Kf1 Qf2) 71...Qd3 72.Kg2 Qg3 0–1. zabazaba (1670) – miki08, gameknot.com, 2013.

6.e4 e5 7.Bc3 c5 8.Qc1+/–.

5.Bd4 Nf6

6.Nc3+–.

6.e3 b6 7.Bc3 Nb7 8.Be2 e6 9.a4 Bc5 10.Ng5 (10.0–0 0–0+–) 10...h5 (10...Bd6 11.0–0+–) 11.f4 h4 12.0–0 Nd6?? (12...Kf8 13.d4 Be7 14.Qd3+–) 13.h3 (better 13.d4+–) 13...Nde4 (13...Nf5 14.Bf3 Nd5 15.Ne4+–) 14.Bf3 Bb7? (14...Nc3 A) worse 15.dc3 Be3 16.Kh1 Qd1 17.Rd1 Rb8=+ (worse 17...Bf4 18.Ne6 fe6 19.Ba8+=); B) 15.Nc3 Rb8 16.Qe2+–) 15.Kh2?? (better 15.Bf6 Qf6 16.d4+– (16.Ne4?! Be3 17.de3 Qa1+–; 16.Be4?! Be4 17.Nc3 Bb7+–)) 15...Nc3 16.Nc3 (worse 16.dc3 Qd1 17.Rd1 Bf3 18.Nf3 Be3–/+) 16...Bf3 17.Qf3 Rc8 18.d4 Bd6 19.Ne2 Nd5 20.c4 (better 20.Kh1!?+–) 20...Ne3+= 21.Qe3 Qg5 22.Kh1 Qd8 (22...Qf6 23.Nc3+=) 23.f5 0–0 (23...Qe7 24.Rae1+–) 24.f6 (24.c5!? bc5 25.dc5+– (worse 25.fe6 Qe7+–)) 24...gf6+– 25.Qh6 f5 26.Rad1 (26.Rg1 f4 27.Nf4 Bf4 28.Qf4 f5+–) 26...Be7+= 27.Nf4 (27.d5 Bg5 28.Qh5 Qf6+=) 27...Bg5 28.Qh5 Bf4 (28...Qf6 29.Nd3+=) 29.Rf4 Qf6 (29...Kg7 30.Rdf1+–) 30.Rd3 (better 30.Rh4 Rfd8 31.d5+–) 30...Qg6?? (better 30...Rfd8+–) 31.Qh4+– (31.Rh4?! Qh5 32.Rh5 Kg7+=) 31...Qh7 (31...Rfe8 32.Rg3 Kg7 33.Rg6 fg6 34.Qe1+–) 32.Rg3 (32.Qh7 Kh7 33.Rg3 c5 34.Rh4) 32...Kh8 (32...Qg6 33.Rff3 Kg7+–) 33.Qf6 (33.Qf6 Qg7 34.Qg7; 33.Qh7 Kh7 34.Rh4) 1–0. Akrapovik (1675) – Mongolitoajedrez (1685), lichess.org, 2020.

6.e3 e6 7.c4 b6 8.Be2 Nb7 (8...a6 9.Ne5 ab5 10.Bf3+/–) 9.0–0 (9.Ne5 Nd7+–) 9...Nd6 10.d3 Bb7 11.Nbd2 (11.Ne5 a6 12.Bf3 Qc8+/–) 11...Rc8 (11...a6 12.ba6 Ra6 13.Ne5+/–) 12.Qb3 c6 13.bc6 Bc6 14.Ne5 Be7 15.Ndf3 Nf5?? (better is 15...0–0+/–) 16.Nc6+– Rc6 17.Qb5 0–0 (17...Qd7 18.Ne5 Rc5 19.Nd7 Rb5 20.Nf6 (20.cb5?! Kd7 21.Bb2 Nd5+–) 20...Bf6 21.Bf6+–) 18.Qc6 1–0. Fournier,Frederic (1760) – Chajnik2, ChessOK.com, 2012.

6.e3 e6 7.c4 Be7 8.Qc2 0–0 9.Bd3 g6 10.0–0 b6 11.Nc3 Nb7 12.Ne5 Nc5 13.Nc6 Qd7 14.Be2 Bd6 (14...Nb7+–) 15.Bf6 (15.Bf6 Bb7 16.d4+–) 1–0. b4_player – manne, casual, 2013.

6.e3 e6 7.c4 Be7 8.Be2 0–0 9.0–0 c6 10.bc6 (10.Qc2 c5 11.Bc3 a6+/–) 10...Nc6 11.Bb2 e5 (11...Qc7!?+/–) 12.Ne5+– Ne5 13.Be5 Ne4 14.Nc3 (14.Qc2 f6 15.Bf4 Ng5+–) 14...Ng5? (better is 14...Nd2 15.Re1 Bb4+/–) 15.d4+– f6 16.Bg3 Bf5 17.Bd3 Be6 (17...Bd3 18.Qd3 Qd7 19.Rfd1+–) 18.Qc2 f5 19.f4 Ne4 (19...Nf7 20.Bf5 Bf5 21.Qf5+–) 20.Ne4 fe4 21.Be4 Rc8 22.c5 g6 (22...b6 23.f5 Bd5 24.Bd5 Qd5 25.Qb3 Qb3 26.ab3 bc5 27.Ra7+–) 23.Bb7 Rc7 24.Bf3 a5 25.a4 Bd5 26.Bd5 Qd5 27.Rfe1 g5 28.fg5 Bg5 29.Bc7 Re8 30.Be5 Re6 31.Rad1 Rg6 32.e4 Qf7 33.Rf1 Qe6 34.Bg3 Kg7 35.d5 Qe8 36.c6 Kh6 37.c7 Qc8 38.d6 Rg8 39.d7 Qa8 40.c8Q Qc8 41.dc8Q Rc8 42.Qc8 (42.Qc8 Be3 43.Kh1 Bc1 44.Rd6 Kh5 45.Qf5 Bg5 46.Qf3; 42.Rd6 Kg7 43.Qc8 Bf6 44.Rdf6 h5 45.Qd7 Kg8 46.Rf8) 1–0. Fournier,Frederic (1605) – changonieto, Active, 2007.

6.e3 Bg4

7.Be2 Ne4 8.0–0 Bf3 (8...c5 9.bc6! Nc6 10.Nc3+–) 9.Bf3 (9.gf3?! Nd6+–) 9...Ng5 10.Bc3 Nf3 11.Qf3 b6 (11...c5+–) 12.Ba5 ba5 (12...f6 13.Bc3 e6+–) 13.Qc6 (13.Qc6 Qd7 14.Qa8 Qd8 15.Qa7+–) 1–0. guest901 – guest504, chessclub.com, 2019.

7.Be2 e6 8.0–0 Bd6 9.c4 b6 10.h3 Bh5 11.Bc3 0–0 (11...c5 12.d4+–) 12.Ba5+– ba5 13.d4 c5 (better 13...Ne4!?+–) 14.bc6 Bc7 (14...Qe8 15.c5 Bc7 16.Nc3+–) 15.Nc3 White prepares the advance d5 15...Rb8 16.e4 White prepares the advance d5 16...Qd6 (16...Bg6 17.Bd3 Nh5+–) 17.e5 Qc6 (17...Qb4 18.Qc1 (18.ef6?! Qc3 19.Rc1 Qb4+–) 18...Bf3 19.a3+– (worse 19.gf3 Nh5+–)) 18.ef6 gf6 (18...Bf3 19.Bf3 (19.gf3? Qd6 20.f4 Qf4–+) 19...Qc4 20.Rc1+–) 19.d5 ed5 20.Nd5 Rbd8 (20...Kh8+–) 21.Ne7 (21.Ne7 Kg7 22.Nc6 Rd1 23.Rad1+–) 1–0. GuestTCPK – GuestYZSN, freechess.org, 2020.

7.Be2 e6!? 8.Nc3+–.

7.h3 Bf3 (7...Bh5 8.Be2+/–) 8.Qf3+– b6 (8...e6 9.Bc3 c6 10.Ba5 Qa5 11.bc6+–) 9.Bf6 ef6 10.Nc3 Rc8 11.Bd3 Bc5 12.Bf5 Nc4?? (12...Rb8+–) 13.Qe4 Ne5 14.Bc8 Qc8 15.f4 0–0 16.fe5 fe5 17.Qe5 c6 18.bc6 Qc6 19.0–0 Bd6 20.Qd5 Qc7 21.Nb5 Qc2 (21...Bh2 22.Kh1 Qe5+–) 22.Nd6 (22.Rf7 Bh2 23.Kh2 Rf7 24.Nd6 Qc7 25.Rc1 Qd6 26.Qd6 g6 27.Rc8 Kg7 28.Qe5 Kh6 29.Rc4 Rf5 30.Rh4 Kg5 31.Qe7 Rf6 32.Rg4 Kh6 33.Qf6 a6 34.Rh4) 22...h6 (22...Qc5 23.Qc5 bc5 24.Rac1+–) 23.Nf7 (23.Rf7 Rd8 24.Rf8 Kh7 25.Qg8 Kg6 26.Qf7 Kg5 27.Qg7 Qg6 28.Rf5 Kh4 29.Qd4 Qg4 30.Qg4) 23...Qc7 24.Ng5 Kh8 (24...Qf7 25.Rf7 hg5 26.Rf6 Rf7 27.Qf7 Kh7 28.Rg6 g4 29.Qg7) 25.Rf8 1–0. anizan dolivia – Jan van Dijk, ChessWorld.net, 2003.

7.h3 Bh5 8.Be2 e6 9.0–0 Bd6 10.c4 Bf3 (10...c5 11.Bc3+–) 11.Bf3+– (worse 11.gf3 c5 12.Bc3 a6+–) 11...e5 (11...a6 12.c5 Be7 13.a4+–) 12.Bc3 b6? (better 12...c6+–) 13.Ba8 Qa8 14.Ba5 ba5 15.d4 ed4 16.Qd4 0–0 17.c5 Be7 18.Nc3 Rd8 (18...a6 19.a4+–) 19.Qe5 Qc8 20.Qe7 Re8 21.Nd5 (21.Nd5 Nd5 22.Qh4+–) 1–0. GuestGRDT – GuestBWHK, freechess.org, 2020.

5.Bd4 Bg4

6.Bb2 Nc4 7.Bc3 +/–.

6.Bb2 Bf3 7.ef3 e6 8.c4 (8.Qe2 a6+/–) 8...b6 (8...a6 9.ba6 Ra6 10.c5+/–) 9.d4 (9.Nc3 Qd7+/–) 9...Qg5 (9...Bb4 10.Nc3+/–) 10.h4 (10.Qd2 Qd2 11.Nd2 0–0–0+/–) 10...Qf4 (10...Qf6 11.Qc2+/–) 11.g3 (11.Qd2 Qd2 12.Nd2 0–0–0+/–) 11...Bb4 (11...Qf6 12.a3+/–) 12.Bc3 (12.Nc3 Qf6 13.a3 Bc3 14.Bc3 Nb7+/–) 12...Bc3 13.Nc3 Qd6 14.a3 Rd8+= 15.d5 ed5 16.Nd5+= Nf6 17.Bh3 Nc4 18.Nf6 Qf6 19.Qe2 Qe5 20.Qe5 Ne5 21.Bg2 0–0 22.0–0 Rd3 23.f4 Nc4 24.a4 Nb2 25.Rfe1 Rfd8+= 26.Reb1 Nc4 27.Bf1 R3d4 28.Rb4 Nd2+= (29.Rd4 Nf3 30.Kg2 Nd4=). wlittle (2125) – kaspov (1950), net–chess.com, 2005.

6.Bc3 Nc4 7.e3 Nd6 8.Be5 Ne4 (8...Nf6 9.h3 Bh5 10.Nc3+–) 9.h3 Bf3 (9...Bh5 10.d3 Nd6 11.Nc3+–) 10.Qf3 Qd5 11.d4 f6 (11...Nef6 12.Qd5 Nd5 13.c4+–) 12.Bd3 fe5 (12...Nc3 13.Bc7 e6+–) 13.Be4 (13.Qe4?! Nf6 14.Qd5 Nd5 15.de5 Rd8+–) 13...Qb5 (13...Qd6 14.Bb7 e4 15.Be4+–) 14.Bb7 Qb2 (14...e4 15.Be4 0–0–0 16.Bf5 e6 17.Be6 Kb8+–) 15.Bc6 Kd8 16.Qf8 1–0. Vendelo – Marcos, internet free game, 2018.

6.e3 c6 7.c4 e6 8.Nc3 Nf6 9.h3 Bf3 10.Qf3 Be7 11.Be2 0–0 12.d3 b6 13.0–0 cb5 14.Nb5 a6 15.Nc3 b5 16.cb5 ab5 17.Nb5 Qb8 18.Rfb1 Qe8 19.Nc7 1–0. Machete99 – guest1172, ICC, 2002.

6.e3 Qd5 7.Nc3 Qf5 8.Bd3 Qe6 (8...Qh5 9.Be2+–) 9.0–0 Bf3 (9...Nf6 10.h3 Bh5 11.Be2+–) 10.Qf3 (10.gf3?! Nf6+–) 10...c6 (10...Nf6 11.h3+–) 11.bc6 (11.Bf5 Qd6 12.bc6 Qc6+–) 11...Nc6 12.Nb5 (12.Bf5 Qh6 13.Nb5 Rb8+–) 12...Qc8 (12...Qd7 13.Qf4 Rc8 14.Na7 Na7 15.Ba7+–) 13.Bf5 e6 (13...Nd4 14.Nd4 e6 15.Be4+–) 14.Bg7! Bg7 15.Nd6 Kd7 (15...Ke7 16.Nc8 Rc8 17.Rab1 ef5 18.Rb7 Kf8 19.Qf5+–) 16.Nc8 Kc8 (16...Ba1 17.Ra1 Rc8+–) 17.Rab1 Nge7 18.Be4 Rf8 (18...f5 19.Bc6 Nc6 20.d4+–) 19.Bc6 (19.d4 f5 20.Bc6 Nc6+–) 19...bc6 (19...Nc6 20.d4 a6 21.Rb6+–) 20.Qf4 e5 (20...a5 21.Qd6 Nd5 22.Qc6 Nc7+–) 21.Qg4 f5 22.Qg7 Kd8 23.Rb7 Re8 (23...Kc8 24.Qe7 Rf7 25.Qf7 Rb8 26.Qd7) 24.Qe5 a5 (24...Nd5 25.Qd6 Kc8 26.Qd7) 25.Qc7 1–0. DEFFM – GuestDKSW, freechess.org, 2019.

6.e3 e6 7.c4 c5 8.Bb2 (8.Bc3 Nf6+–) 8...f6 9.Be2 (9.Qa4 Bf3 10.gf3 a6+–) 9...Bd6 (9...Bf3 10.gf3 a6 11.Qa4+–) 10.0–0 (10.Qa4 Ne7+–) 10...Ne7 (10...Bf3 11.gf3 Ne7 12.Qa4+–) 11.d4 (11.Qa4 a6+–) 11...0–0 (11...Bf3!? 12.gf3 cd4 13.Bd4 Rc8+=) 12.Nbd2 Nf5 13.h3 Bf3 14.Nf3 (14.gf3 cd4 15.e4 d3 16.Bd3 Be5 17.Be5 fe5 18.ef5 Qd3–/+) 14...Re8 (14...a6 15.ba6 Ra6 16.Bd3+–) 15.d5+– ed5?? (better 15...Nh6+–) 16.Qd5 Kh8 17.Qf5 Be7 (17...Qc8 18.Qc8 Rac8 19.Bc3+–) 18.Bd3 (better 18.Ng5! fg5 19.Bd3 Qd3 20.Qd3 a6+–) 18...g6 19.Qe4 Rc8 (19...Bd6 20.Qh4 Kg7+–) 20.Ng5 (20.Ng5 Bd6 21.Qh4+–) 1–0. DEFFM – GuestTYXW, freechess.org, 2018.

6.e3 Bf3 7.Qf3 c6 8.a4 (8.Bc3 Rc8+–) 8...e6 (better 8...Nf6+–) 9.c4 (9.bc6!? bc6 10.Nc3+–) 9...Nb3+– 10.Bc3 (10.bc6 Na1 11.cb7+– (11.Ba1?! Qb6 12.Nc3 Qc6=)) 10...Na1=+ 11.Ba1 Bb4?? (better 11...Ne7=) 12.Bg7+– (12.bc6?! Kf8 13.cb7 Rb8+–) 12...Ne7 (12...Qd7 13.bc6 bc6 14.Bh8+–) 13.Bh8 Nf5 (13...Qa5 14.Qd1+–) 14.bc6 Ke7 (14...bc6 15.Qc6 Kf8 16.Bd3+–) 15.cb7 Rb8 16.Be5 Nd6 (16...Bd6 17.Bc3 Qc7+–) 17.Bf6 Kd7 18.Bd8 Rd8 1–0. DEFFM – GuestYPGP, freechess.org, 2016.

6.e3 Bf3 7.Qf3 e6 8.Bd3 Nf6 9.Bc3 b6 10.Ba5 (10.Bf6 gf6 11.Nc3 Bd6+–) 10...ba5 11.Qc6 (11.Nc3 Bb4+–) 11...Nd7 12.0–0 Bd6 (12...Be7 13.Be2+–) 13.Nc3 0–0 14.f4 Bb4 (14...Qe7 15.Rab1+–) 15.Ne4 (15.a3 Be7+–) 15...Kh8 (15...Rb8+–) 16.a3 f5?? (16...Be7 17.f5 Ne5+–) 17.ab4 fe4 18.Be4 ab4 (18...Rc8 19.Ra5 e5+–) 19.Qa8 Qa8 20.Ba8 Ra8 21.Rfb1 1–0. GuestGBJY – egoy, freechess.org, 2020.

6.e3 f6 7.h3 Bh5 8.Bc3 Nc4?? 9.Bc4 (9.Bc4 Qd7 10.Bb2+–) 1–0. pereira – oppo, internet, 2009.

6.e3 Nf6 7.h3 Bf3 8.Qf3 Qd7?? (better is 8...e6+–) 9.Bc3 b6 (9...e5 10.Ba5 e4+–) 10.Qa8 Qd8 11.Qa7 e6 12.Ba5 ba5 13.Qa5 Bd6 14.Qc3 0–0 15.Qc6 Be5 16.c3 Qd6 17.Qd6 Bd6 (17...cd6?? 18.d4 Bg3 19.fg3+–) 18.a4 Rd8 19.a5 Bc5 20.d4 Ba7 21.c4 Kf8 22.c5 e5 23.de5 Nd7 24.b6 cb6 25.cb6 Bb8 26.f4 Ke7 27.Nc3 Nc5 28.a6 Nb3 29.a7 Na1 30.a8Q Nc2 31.Kf2 Nb4 32.Qa3 Ke8 33.Bb5 Kf8 34.Qb4 Kg8 35.e6 fe6 36.Qe7 Rd2 (36...Be5 37.Qd8 Kf7 38.Be8 Kf8 39.Bg6) 37.Ke1 Rc2 (37...h6 38.Kd2 g6 39.Qe6 Kg7 40.Qe7 Kh8 41.Qf6 Kg8 42.Bc4 Kh7 43.Qf7 Kh8 44.Qg8) 38.Qe8 1–0. kamret (2240) – webchess (1715), GameColony.com, 2003.

4.b5 Nb4

5.a3 Nc2 6.Qc2 c6 7.bc6 bc6 8.Qc6 (better 8.Bd4!? f6+–) 8...Bd7 9.Qd5 Bg4 (9...e6 10.Qd4 Rb8 11.d3+–) 10.Qd4 Bf3 (10...Qd4 11.Bd4 f6 12.e4+–) 11.Qa4 Qd7 12.Qd7 Kd7 13.ef3 Rb8 14.Bd4 a5 (14...e6 15.Nc3+–) 15.a4 e6 (15...Nf6 16.Nc3+–) 16.Bb5 Kd8 17.Na3 Ba3 (17...f6 18.Nc4 Bb4 19.Rc1+–) 18.Bg7 (18.Bg7 Bd6 19.Bh8+–) 1–0. DEFFM – GuestXXPB, freechess.org, 2019.

5.a3 Nc2 6.Qc2 Bf5 7.Qf5 1–0. DEFFM – RajaSakti, freechess.org, 2018.

5.a3 Qd6 6.ab4 Qb4 7.Bd4 Qb5 8.e3 Qd5 9.c4 (better 9.Nc3 Qd8+–) 9...Qe4 (9...Qd8 10.Nc3+–) 10.Nc3 Qf5 (10...Qg4 11.Nb5 Kd8 12.Na7+–) 11.Nd5 Qd7 (11...Kd8 12.Ne5 Nh6 13.Bd3+–) 12.Be5 Kd8 (12...f6 13.Nc7 Kd8 14.Na8 fe5 15.Ra7+–) 13.Bc7 Ke8 (13...Qc7 14.Nc7 Kc7 15.Qa4+–) 14.Ne5 Qe6 15.Nf4 Qf5 16.Bd3 Qf6 17.Qa4 (17.Qa4 Qc6 18.Nc6+–) 1–0. DEFFM – GuestMJMF, freechess.org, 2019.

5.Bd4 a6 6.a3 Nd5 7.c4 Nf4 8.e3 Ne6 9.ba6 Ra6 10.c5 (10.Be5 f6 11.Bb2 g6+–) 10...Nd4 11.Nd4 e5 (11...Ra8 12.Nc3+–) 12.Ba6 ed4 13.Qa4 c6 14.ed4 ba6 15.Qc6 Qd7 16.Qd7 Bd7 (16...Kd7 17.Nc3+–) 17.0–0 (17.Nc3 Bf5+–) 17...Bb5 (17...g6!? 18.Re1 Kd8+–) 18.Re1+– Be7 (18...Kd7 19.Nc3 Bd3+–) 19.d5?? (better 19.Nc3 Kd7 20.Nb5 ab5 21.a4+–) 19...Bd3?? (better 19...Kd7 20.c6 Kd6+–) 20.d6+– Bb1 (20...Kd7 21.de7 Ne7+–) 21.Rab1 (21.Re7?! Ne7 22.Rb1 Nc6+–; 21.de7?! Bf5+–) 21...h5 (21...Kd7 22.Rb7 Kc6 23.de7+–) 22.Rb8 (22.c6 f5 23.c7 Kd7 24.Rb8 Nf6 25.Rh8 Kd6 26.c8Q Nd7 27.Qa6 Nb6 28.Qb6 Kd5 29.Re7 g6 30.Rc8 g5 31.Qc5) 22...Kd7 23.de7 Ne7 1–0. DEFFM – GuestPJXV, freechess.org, 2019.

5.Bd4 c6 6.a3 Nd5 7.e4 Ndf6 (7...Nb6 8.bc6 bc6 9.Be2+–) 8.bc6 Ne4?? (better 8...bc6 9.Nc3 Bg4+–) 9.cb7 Bb7 (9...Rb8 10.bc8N Qc8 11.Ba7 Rb2+–) 10.Bb5 Bc6 (10...Qd7 11.Bd7 Kd7 12.Ne5 Ke6 13.d3+–) 11.Bc6 Qd7 12.Bd7 Kd7 13.Ne5 Ke6 14.Qh5 g6 15.Qh3 f5 16.Qb3 Kd6 (16...Kf6 17.Ng4 Kg5 18.f4 Kf4 19.Qf3 Kg5 20.h4 Kh5 21.Ne5 Kh6 22.Nf7) 17.Qc4 (17.Qc4 e6 18.Qc6 Ke7 19.Qd7 Kf6 20.Nf7 e5 21.Be5) 1–0. DEFFM – GuestMCVK, freechess.org, 2018.

5.Bd4 Qd5 6.c3 Qb5 (6...c5 7.Be3 e5 8.cb4 cb4+–) 7.cb4 Qb4 8.Nc3 Bg4 (8...Qa5 9.e3 f6 10.Ne4+–) 9.Rb1 Qc4 (9...Qd6 10.Be5 Qc5 11.Rb5+–) 10.e3 Bf3 (10...Qe6 11.Rb7 Qc8 12.Qa4 Bd7+–) 11.Qf3 (11.Qf3 Qe6 12.Qb7+–) 1–0. Heini – chessenemy, internet, 2016.

5.Bd4 Qd5 6.e3 Bg4 7.c4 Qh5 8.Be2 (better 8.Qa4 Bf3 9.gf3+–) 8...c6? (better 8...e5 9.Bc3 e4 10.Bb4 Bb4+=) 9.Bc3 cb5? (9...e5 10.a3 e4 11.ab4 ef3 12.gf3 Bh3 13.bc6 bc6+–) 10.Bb4 e5 (10...bc4 11.Bc4 Nf6 12.Be2+–) 11.Bf8 Kf8 12.cb5 e4 13.Nd4 Be2 14.Qe2 Qe2 15.Ne2 f5 16.Ng3 g6 17.Nc3 Nf6 18.0–0 Rc8 19.f3 ef3 20.Rf3 Rd8 (20...Kg7 21.e4 Rhd8 22.Rd1 fe4 23.Nge4 Ne4 24.Ne4+–) 21.d4 (21.e4 Rd2 22.ef5 Kg7 23.fg6 Rc2 24.gh7 Nh7+–) 21...Nd5 (21...Kg7 22.Rd1+–) 22.Nd5 Rd5 23.a4 (23.e4 Rd4 24.ef5 Kf7+–) 23...a6 (23...Ke7 24.Raf1+–) 24.Rc1 ab5 25.Rc8 (25.ab5 Ke7 26.Rc7 Rd7 27.Rd7 Kd7+–) 25...Kg7 26.Rh8 (26.Nf5!? Rf5 27.Rh8 Kh8 28.Rf5 gf5 29.ab5 Kg7+–) 26...Kh8 27.ab5 Rb5 28.Rf1 Kg7 29.Rc1 Kf6 30.Ne2 Rb3 31.Nc3 b5 32.Kf2 b4 33.Nd5 Kg5 (33...Ke6 34.Nc7 Kd6 35.Nb5 Ke6 36.Kf3+–) 34.Kf3 h5 (34...Rb2 35.Rc7 Kh6 36.h4+–) 35.Nf4 (better 35.Rc6 Rb1 36.Nf4 Kh6 37.Rg6 Kh7+–) 35...Rb2 (35...Rc3 36.Rb1+–) 36.Ne6 (better 36.Rc6 Kh6 37.Rg6 Kh7 38.Rg5+–) 36...Kf6 37.Nc5 (37.Rc6!? g5+–) 37...g5 38.Nd3 Rb3 (38...g4 39.Kg3 Re2 40.Nb4+–) 39.Rc6 Ke7 40.Nc5 Rc3 (40...Rb1 41.Re6 Kf7 42.Rb6 Rf1 43.Ke2+–) 41.Rb6 (better 41.d5 g4 42.Kf4 Kd8+–) 41...f4 42.Ne4 (better 42.Rb7 Ke8 43.Rb4 Re3 44.Kf2+–) 42...Re3=+ 43.Kf2 Re4 44.Rb4 Ke6 (44...g4 45.Rb7 Kd6 46.Rb6 Kd7 47.Rb4=+) 45.g3 fg3 46.hg3 Kd5 Attacking the isolated pawn on d4 47.Rb5 Kd4 48.Rg5 h4 49.gh4 Rh4 50.Kg3 Re4 51.Rg7 Re3 52.Kg4 Re2 53.Rd7 Ke3 54.Re7 Kf2 55.Rf7 Kg2 56.Rf3 Rf2 57.Rg3 Kh2 58.Rh3 Kg2 59.Rh5 Rd2 60.Kf4 Rd4 61.Ke3 Rd8 62.Ke4 Re8 63.Kd5 Rd8 64.Kc6 Rc8 65.Kd7 Ra8 66.Rc5 Ra7 67.Kc8 Ra1 68.Rc2 Kf3 69.Kd7 Ke4 70.Kd6 Ra5 71.Kc6 Ra6 72.Kb5 Ra7 73.Rc4 Ke5 74.Rc5 Kd6 75.Rc6 Kd7 76.Rh6 Rb7 77.Ka6 Rb8 78.Ka7 Rf8 79.Rh7 Ke8 80.Kb6 Rf6 81.Kc5 Rf5 82.Kd6 Rf6 83.Ke5 Rf2 84.Rh8 Kd7 85.Rh7 (85.Rh7 Kc6 86.Rg7=) 1–0. Atotheking – phagnu, lichess.org, 2019.

5.Bd4 Nd5 6.c4 Ndf6 7.h3 e6 8.Nc3 b6 9.Qc2 Bb7 10.e4 Nd7 11.Be2 f6 12.0–0 e5 13.Be3 Nc5 14.d4 ed4 15.Nd4 Bd6 16.Nf5 Bf8 (16...Kf7+–) 17.Rad1 Qc8 18.Bg4 Qb8 19.Qe2 g6 20.e5! fe5 (20...h5 21.ef6 Kf7 22.Bc5 Nf6 23.Nh6 Kg7+–) 21.Bc5 bc5 22.Qe5 Ne7 23.Rfe1 gf5 (23...Bd5 24.Nd5 Qb6 25.Nb6 Rg8 26.Qe7 Be7 27.Re7 Kf8 28.Nd7) 24.Bh5 1–0. b4_player – story, casual, 2013.

5.Bd4 Qd6 6.c4 (better 6.a3 Nd5 7.c4+–) 6...Nf6?? (6...c5 7.Be5 Qe6+–) 7.a3 Bg4 8.ab4 Bf3 9.Bc5 (9.gf3?! Qd4 10.Nc3 Qc4+–) 9...Be2 (9...Qe5 10.d4 Qf5 11.gf3 b6+–) 10.Be2 (10.Bd6?! Bd1 11.Bc7 Bg4+–) 10...Qe5 11.d4 Qe4 (11...Qf5 12.Bf3 Qe6 13.Qe2+–) 12.0–0 b6 (12...Qf5 13.Nc3 g5+–) 13.Bf3 Qe6 14.Ba8 bc5 15.Bc6 Nd7 16.Ra7 Qc4 17.Ra8 1–0. DEFFM – nulajen, freechess.org, 2019.

5.Bd4 Bd7 6.e3 e6 7.Bc4 (better 7.c4!? e5 8.Be5+–) 7...Nf6 8.Nc3 Bd6? (better 8...c6+–) 9.e4 c5 (9...e5 10.Ne5 Be5 11.Be5+–) 10.Bf6 Qf6 11.a3 Nc6 (11...0–0 12.0–0+–) 12.bc6 Bc6 13.0–0 0–0 14.Bb5 Bb5 15.Nb5 Bf4 (15...Be5 16.Ne5 Qe5 17.Qe2+–) 16.Qe2 a6 (16...Qe7 17.a4+–) 17.e5 Qh6 (17...Qe7 18.Nc3+–) 18.Nd6 b5 (18...Rfd8 19.g3 Rd6 20.ed6 Bd6 21.Qe4+–) 19.g3 Bg5 20.d4 c4 (20...cd4 21.Nd4 Qg6 22.a4+–) 21.a4 Be7 22.ab5 Bd6 (22...ab5 23.Nb5 c3 24.Nc3+–) 23.ed6 ab5 24.Ne5 f6 (24...Qf6 25.Nc6 Rab8+–) 25.Nc6 Rfc8 26.Qe6 Kh8 27.d7 (27.d7 Qh3 28.Ra8 Qh2 29.Kh2 h6 30.dc8Q Kh7 31.Qf6 gf6 32.Qg8) 1–0. Jan,Ek – GuestEnder, internet, 2020.

5.Bd4 Bd7 6.e3 Bg4 7.Be2 Bf3 (better 7...f6!?+–) 8.Bf3+– (8.gf3?! e6+–) 8...c6 (8...Qd6 9.a3 Nd5 10.c4+–) 9.a3 Nd5 10.c4 (better 10.bc6 b5+–) 10...Nb6? (10...Nc7+–) 11.bc6 Rb8 (11...Rc8 12.cb7 Rc4 13.Bb6 Qb6+–) 12.c5 Nc4 (12...Nd7 13.cd7 Qd7+–) 13.Qa4 bc6 (13...Qc7 14.cb7 Kd8 15.Qc4 Rb7 16.Qd5 Kc8 17.Qf7 Nf6 18.Bf6 Qc5+–) 14.Bc6 (14.Bc6 Qd7 15.Bd7 Kd8 16.Qa7+–) 1–0. GuestTYCT – GuestMWMR, freechess.org, 2018.

5.Bd4 Be6 6.a3 Nd5 7.e4 Nf4 8.Be3 g5? (better is 8...Ng6+–) 9.Ng5 Bg7 10.Nc3 (worse is 10.Bf4 Ba1 11.Ne6 fe6 12.Qh5 Kd7+–) 10...Ng6 (10...h6 11.Nf7 Bf7 12.Bf4+–) 11.Ne6 fe6 12.Bc4 Qd7 13.0–0 0–0–0 (13...Nf6 14.f4+–) 14.Qg4 (14.Ba7 b6 15.Qg4 Nh6 16.Qe6 Qe6 17.Be6 Kb7 18.Bb6 Kb6 19.Nd5 Kb5 20.Rab1 Kc6+/–) 14...Bc3 (14...Kb8 15.Be6 Qd6 16.d4+–) 15.Be6 (15.Be6 Ba1 16.Bd7 Kb8 17.Ra1+–; worse is 15.dc3 Nf6 16.Qe6 Qe6 17.Be6 Kb8+–) 1–0. Janek – Vesely, internet, 2016.

5.Bd4 f6 6.c4 e5 7.Bc3 Bf5 (7...e4 8.a3 Nd5 9.cd5 ef3 10.gf3 Qd5 11.e4+–) 8.d3 Bg4? (better 8...e4 9.Nd4 ed3 10.Nf5 Nc2 11.Kd2 a6 12.ed3 Na1+–) 9.Nbd2 c6 10.a3 (10.Qb1 Nd5 11.cd5 cd5+–) 10...Bf3 (10...Nd3 11.ed3 cb5+–) 11.ab4?? (better 11.Nf3 Nd5 12.cd5 cd5 13.Qa4+–) 11...Bg4+– 12.bc6 bc6 13.h3 (13.g3 Bd6+–) 13...Be6 14.e3 Qb6 (14...Bf5 15.Qa4 Qd7 16.Be2+–) 15.c5 (15.Qa4 Ne7+–) 15...Qb7 (15...Qc7 16.d4 Ne7 17.b5+–) 16.d4 ed4 17.ed4 (17.Ba6 Qd7 18.Bd4 Ne7+–) 17...Bd5 18.Nf3 Qe7 (18...Rb8 19.Qa4+–) 19.Qe2 g5 (19...Kd8 20.Ra6+–) 20.Qe7 (20.b5 cb5 21.Qe7 Ne7 22.Bb5 Nc6+–) 20...Ne7 21.Be2 (better 21.b5 Rb8 22.Ra5+–) 21...Bf3 (better 21...Kd8+–) 22.Bf3 (22.gf3?! Kd7+–) 22...Nd5 23.Bd5 (23.Ra6 Kf7 24.Kd2 Bh6+–) 23...cd5 24.0–0 (24.Kd2 h5+–) 24...Kd7 (24...Be7 25.Ra6+–) 25.Rfe1 Bg7 (25...h6 26.b5 Rg8 27.c6 Kc7 28.Ba5 Kd6 29.Bb4 Kc7 30.Bf8+–) 26.b5 f5 27.c6 Kd6 (27...Kc8 28.b6! Rb8 29.b7 Kc7+–) 28.Bb4 Kc7 29.Re7 Kb6 (29...Kc8 30.b6 Be5 31.b7 Kb8 32.ba8R Ka8 33.Raa7 Kb8 34.Reb7 Kc8 35.Ra8 Bb8 36.Rab8) 30.Rg7 (30.Rb7) 30...Kb5+– 31.Bc5 (better 31.Rc1!? Rhb8 32.Bd6 Rb6 33.Rc5 Ka6 34.Rh7 Rb5+–) 31...Kc6 32.Rg5 a5 33.Rf5 a4 34.Rf6 (34.Rc1 Rhc8+–) 34...Kb5 (34...Kc7 35.Rf3+–) 35.Rb6 Kc4 36.Rb4 Kd3 37.f3 (37.Ra3 Kc2+–) 37...Rhe8 (37...Rhb8 38.Rb8 Rb8 39.Ra4+–) 38.Ra3 Kc2 (38...Kd2 39.Rba4 Ra4 40.Ra4+–) 39.Rba4 (39.Rba4 Ra4 40.Ra4+–) 1–0. GuestYBNN – GuestKBCZ, freechess.org, 2016.

5.Bd4 Nf6 6.a3 Nbd5 7.e3+–.

5.Bd4 Nf6 6.c3 Nbd5 7.c4 Nf4 8.Nc3 h6 9.e3 Ng6 10.Be2 e6 11.0–0 Bd6 12.c5 Be7 13.Qc2 0–0 14.Bd3 c6 15.Bg6 fg6 16.Ne5 cb5 17.Nb5 a6 18.Nc3 Qc7 19.Ng6 Rd8 20.Rac1 Nd5 21.Be5 Qc5 22.Nd5 Qd5 23.Ne7 (23.Ne7 Kh8 24.Nd5 Rd5 25.f4 Re5 26.fe5+–) 1–0. marre – takrik, internet live, 2010.

5.Bd4 Nf6 6.Nc3 e6? (6...Bf5 7.Rc1+/–) 7.a3 (better is 7.e4!? g5 8.Be3+–) 7...Nbd5+/– 8.Nd5 ed5 9.e3 Bd6 10.Be2 0–0 11.0–0 Re8 12.c4 c5 13.bc6! bc6 14.cd5 cd5 15.d3 Ng4 16.h3 Nh6 17.Qc2 Be6 18.Qc3 Qd7 (better is 18...Nf5!?+/–) 19.Bg7+– Bh3?? (better is 19...Rec8 20.Qb2 Rab8 21.Qb8 Rb8 22.Bh6 Bh3 23.gh3 Qh3+=) 20.Bh6 (20.gh3?! Qh3 21.Be5 Qg4 22.Kh1 Be5 23.Ne5 Qh4 24.Kg2 Qg5 25.Kh3 Qe5 26.Qe5 Re5+/–) 20...Bf8 21.Bf8 Rf8 22.Qf6 Bg2 23.Qg5 Kh8 24.Qf6 Kg8 25.Kg2 Qg4 26.Kh1 Qh3 27.Nh2 Rae8 28.Rg1 Qg2 29.Rg2 1–0. Fournier,Frederic (1750) – peluche49 (1635), Active (5/0), 2004.

5.Bd4 Nf6 6.c4 Bf5 7.d3 e6? (better is 7...e5!? 8.Be5 Qe7+/–) 8.a3 Nd3 9.ed3 Bg4 10.Be2?? (better is 10.Be5+–) 10...Bf3+= 11.Bf6 (11.Bf3!? Qd4 12.Bb7 Qe5 13.Kf1 Qa1 14.Ba8+=) 11...Qf6= 12.gf3?? (better is 12.Bf3 Qa1 13.Bb7+=) 12...Qa1–+ 13.0–0 Bd6 14.d4 0–0 15.c5 Bf4 16.Qd3 Rad8 17.Nd2 Qd4 18.Qd4 Rd4 19.Ne4 f5 20.Ng3 Rf6 21.Nh5 Rg6 22.Kh1 Be5 23.Rc1 Rh4 24.Ng3 f4 25.Ne4 Rgh6 (25...Rgh6 26.Rc4 Rh2 27.Kg1 Rh1 28.Kg2 R6h2) 0–1. Fournier,Frederic (1965) – ludoc (1675), Active (4/0), 2005.

5.Bd4 Nf6 6.c4 Bg4 7.Bc3 Bf3? (7...e5 8.Qa4 Ne4 9.Bb4 Bf3 10.gf3 Nf2 11.Kf2 Qh4 12.Kg1 Qc4 13.b6 c6+–) 8.gf3 (8.ef3?! Nd3 9.Bd3 Qd3+–) 8...e5 (8...e6 9.a3 a5 10.Rg1+–) 9.a3 Bc5 (9...Nbd5 10.cd5 Qd5 11.e3+–) 10.ab4 (worse 10.Bb4 Qd4 11.Bc5 Qa1+–) 10...Nh5 (10...Bd4+–) 11.bc5 Qh4 (11...0–0 12.Be5 a6 13.ba6 Ra6 14.Ra6 ba6 15.e3+–) 12.b6 cb6 (12...0–0 13.ba7 Qc4 14.Ra5+–) 13.Qa4 Ke7 14.cb6 ab6 15.Qb4 Kf6 16.Qd6 Kf5 (16...Kg5 17.Rg1 Ng3 18.Qe5 Kh6 19.Qg7 Kh5 20.hg3 Ra5 21.g4 Qg4 22.Qg4 Kh6 23.Bg7) 17.e4 Kf4 (17...Qe4 18.fe4 Kg4 19.Rg1 Ng3 20.Qe5 Kh4 21.hg3 Kg4 22.Qf5) 18.Be5 (18.Rg1 f6 19.Qb6 Qf2 20.Kf2 Ra1 21.Rg4) 18...Kf3 (18...Kg5 19.Rg1 Ng3 20.Bg7 f6 21.Qf6 Kh5 22.Qh6) 19.Qd3 Kg4 20.Rg1 (20.Rg1 Qg3 21.Be2 Kh4 22.Bg3 Kg5 23.Be5 Ng3 24.Qg3 Kh6 25.Qg7) 1–0. DEFFM – GuestJBNR, freechess.org, 2019.

5.Nd4 c5 6.bc6 b6 7.e3 (7.a3 Na6+–) 7...e5 8.Bb5 Qd5 9.c7 Bd7 10.Bd7 Kd7 11.Qg4 Kc7 12.a3 Na6 (12...Nf6 13.Qh3 ed4 14.ab4 de3 15.fe3+–) 13.Nf3 Nf6 (13...f6 14.Nc3 Qc6 15.d4+–) 14.Be5 (14.Qg5 Nd7 15.Be5 Ne5 16.Qe5 Qe5 17.Ne5 f6+–) 14...Kb7? (14...Qe5 15.Qc4 Qc5 16.Qa6 Qc2 17.Nc3+–) 15.Nc3?? (15.Bf6 gf6 16.Nc3 Qe6+–) 15...Qd8? (better 15...Qd2 16.Nd2 Ng4+–) 16.Bf6 (16.Qc4 Qd7+–) 16...Qf6 17.Qe4 Kc8 (17...Qc6 18.Qc6 Kc6 19.Ne5 Kb7 20.Nf7 Rg8+–) 18.Qa8 (18.Qa8 Nb8 19.Qa7+–) 1–0. GuestRJPV – GuestTWMR, freechess.org, 2017.

5.Nd4 c5 6.bc6 Nc6 7.Nc6 bc6 8.e3 Nf6 9.Be2 e6 10.Bf3 Bb7 11.c4 Rb8 (11...Bd6 12.d4+–) 12.Qa4 Qb6 (better 12...Nd7!?+–) 13.Bf6+– gf6 14.Nc3 Bg7 (14...Rc8+–) 15.Rb1 Qa6 (15...Qc7+–) 16.Qa6 Ba6 17.Rb8 Ke7 (17...Kd7 18.Rb4 Bc8 19.Ra4+–) 18.Rh8 (18.Rb4 Ra8+–) 18…Bh8 1–0. GuestTGGC – shaanai, freechess.org, 2018.

5.Nd4 c5 6.Nf3 Bf5 7.Na3 Nf6 8.c3 Nbd5 9.e3 e6 10.d4 cd4= 11.cd4?? Bb4 12.Nd2–/+ 0–0 13.Nc2 Nc3 14.Bc3 Bc3–+ 15.Rc1? Ne4 0–1. gtate (1985) – winston (1955), net–chess.com, 2004.

5.Nd4 Bf5 6.Nf5 e5 7.a3 h5 (7...Nd5 8.Be5 f6 9.Bg3+–) 8.Be5 (better 8.ab4 g6 9.Ne3+–) 8...g5 (8...f6 9.Bb2 Nd5+–) 9.Bh8 f6 10.e3 (10.ab4 Qd5 11.e4 Qe4 12.Qe2 Qe2 13.Be2 Bb4 14.Bh5 Kd7+–) 10...c5 11.Qh5 (11.Qh5 Kd7 12.Qf7 Ne7 13.ab4+–) 1–0. GuestYLTZ – GuestBCWK, freechess.org, 2017.

5.Nd4 Nf6 6.a3 Nbd5 7.c4 Nb6 8.e3 e6 9.a4 (9.Qc2 Be7+–) 9...Bc5 10.a5 Nbd7 11.Be2 0–0 12.0–0 Ne5? (better 12...a6+–) 13.Nb3+– Ned7 14.d4 (better 14.Nc5 Nc5 15.Ba3+–) 14...Be7 15.c5 c6 16.b6 Nd5 17.Bd3 f5 18.N1d2 Rf6 (18...e5 19.Bc4+–) 19.Rc1 Rg6 20.Bb1 (20.Qf3 N7f6+–) 20...Bf8 21.e4 (21.ba7 Ra7 22.Bd3 Qh4+–) 21...Qg5 22.g3 Nf4 (22...fe4 23.ba7 Qh6 24.Be4+–) 23.Nf3 Nh3 24.Kh1 Qg4 (24...Qf6 25.Qe2+–) 25.ef5 Rf6 (25...Rh6 26.fe6 Nf6 27.Ne5 Qe6 28.Bd3+–) 26.Ne5 Qd1 27.Rcd1 ef5 28.Nd7 Bd7 29.d5 Re8?? (29...Rf7 30.d6 f4+–) 30.Bf6 gf6 31.d6 Bh6 (31...a6 32.f4 Re2 33.Nd4 Nf2 34.Rf2 Rf2 35.Bf5+–) 32.Nd4 (32.ba7 Ra8 33.f4 Ra7+–) 32...f4 (32...ab6 33.Bf5 Bf5 34.Nf5+–) 33.Rde1 (better 33.ba7 Bg5+–) 33...Re1 34.Re1 Nf2 (34...ab6 35.Re7 bc5 36.Rd7+–) 35.Kg2 Ng4 (35...ab6 36.Re7 Bh3 37.Kf2 bc5 38.Ba2 Kf8 39.Rb7 fg3 40.Kg3 Bc8+–) 36.Bh7! Kh7 37.Re7 Kg6 38.Rd7 (38.Rd7 ab6 39.Rb7 Ne3 40.Kg1 bc5 41.Nf3+–) 1–0. Adjailton (1750) – Vladimir_F, lichess.org, 2016.

5.Nd4 Nf6 6.e3 Ne4 7.a3 Nd5 8.Qf3 Ng5 9.Qg3 Ne4 10.Qf3 Ng5 11.Qh5 e5 12.Nf3 Nf3 13.Qf3 f6 14.c4 Ne7 15.Be2 Nf5 16.Nc3 Qe7 (16...a6 17.d3+–) 17.Nd5 Qd6 18.a4 g6 (18...c6 19.Ba3 Qd7 20.Bf8 Rf8 21.Nb4+–) 19.Ba3 c5 (19...Qd8+–) 20.bc6! Qc6 (20...bc6 21.Bd6 Combination; 20...Qc6 21.g4 Combination) 21.g4 Nh4 22.Qg3 (better 22.Nf6!? Kf7 23.Qc6 bc6 24.Bf8 Kf8+–) 22...g5 23.f4 (23.d4 Bg7+–) 23...ef4 24.ef4 Be6 25.fg5 fg5 26.0–0 (26.Qe5 Ng6 27.Qg5 Ba3 28.Ra3 Bd5 29.Qd5 Qd5 30.cd5 0–0–0+–) 26...Bd5 (26...Bg7!? 27.Nf6 Bf6 28.Rf6 0–0–0+–) 27.cd5+– Qb6?? (better 27...Bc5 28.Bc5 Qc5 29.Qe3 Qe3 30.de3 Ke7+–) 28.Kh1 Ba3 (28...Ng6 29.Rab1 Qb1 30.Qe3 Qe4 31.Qe4 Kd8+–) 29.Ra3 (better 29.Qe5 Be7 30.Qh8 Kd7 31.Qa8 Qd8 32.Qb7 Qc7 33.Qb5 Kd8+–) 29...Qc5 (29...Kd8 30.Rc3 Nf5 31.gf5 h6+–) 30.Re3 (30.Qe5 Qe7 31.Bb5 Kd8 32.Qh8 Kc7 33.Rc3 Kb6 34.Qd4 Ka5 35.Rb3 Qe4 36.Qe4 Nf3 37.Qb4 Kb6 38.Qd6 Ka5 39.Qc7 b6 40.Qc3) 30...Kd7 (30...Kd8 31.Qe5 Ng6 32.Qf6 Kd7 33.Bb5 Kc7+–) 31.Rf7 Kc8 32.Qe5 (32.Qe5 Qc1 33.Bf1 Qf1 34.Rf1 b5 35.Rf7 ba4 36.Qh8; 32.Rc3 a6 33.Rc5 Kd8 34.Qd6 Ke8 35.Qe7) 1–0. GuestLGCP – GuestTJVT, freechess.org, 2017.

5.a3 Nd5

6.Bd4 b6 7.c4 Ndf6+/– 8.d3 Bb7 9.g3?? (9.e4 Nh6+/–) 9...g6?? (better is 9...Bf3 10.ef3 Qd4–+) 10.Bg2?? (10.Nbd2 a6+/–) 10...Bg7?? (better is 10...Bf3 11.Bf3 Qd4 12.Ba8 Qa1–/+) 11.Ra2 Nh6 12.0–0 0–0 13.Re1 Nf5 14.Bc3 Nh6 15.h3 e6 (15...a6 16.g4 Ne8 17.Bg7 Kg7 18.Qb3+/–) 16.Nbd2 (16.g4 Nd7+–) 16...Nf5 (16...c5 17.g4 Ne8 18.Bg7 Ng7 19.g5+/–) 17.e4 Ne7 18.e5 (18.Qa1 Ne8+–) 18...Nh5 19.d4 c5 (19...a6!?+–) 20.dc5 bc5 21.Nh2 (better is 21.Nb3!? Rc8 22.Qd2+–) 21...Bg2+/– 22.Kg2 Qb6 (22...Nd5 23.Qf3 Nc3 24.Qc3+–) 23.Ne4 (23.Qf3 Nf5+–) 23...Rad8 24.Rd2 Rd2 25.Qd2 (worse is 25.Bd2 Be5 26.Nf3 Bg7+=) 25...Kh8? (better is 25...Nf5+–) 26.g4 Qb7 (26...f5 27.gh5 fe4 28.h6+–) 27.gh5 Nf5 28.Nf3 Bh6 (28...a6 29.hg6 (29.Nc5?! Nh4 30.Kf1 Qf3+–) 29...fg6 30.a4+–) 29.Qb2 (29.Qd3 Bf4+–) 29...Rd8 30.a4 Bf4 (30...gh5 31.Qc2 Bg7+–) 31.Nfg5! (31.Nc5?! Nh4 32.Kf1 Qf3+=) 31...Nh4 (31...Bg5 32.Kg1 Decoy) 32.Kh1 (32.Kf1 Bg5 33.Qe2 Be7+/–) 32...Bg5 33.Qe2 Nf5 34.Kg1 Bh4 (34...Qe7 35.hg6 hg6 36.a5+/–) 35.hg6 (35.Nc5 Qc7 36.Na6 Qc8+–) 35...Rg8 36.Kh1 (36.Kh2 Rg6 37.Rg1 Qe7+–) 36...Rg6 37.Rg1 (better is 37.Kh2+/–) 37...Rg1? (better is 37...Bf2 38.Rg6 fg6+=) 38.Kg1+– Qc8 39.Qh5 Qd7? (39...Qg8 40.Qg4 Be7 41.Nd6+–) 40.Nc5 (40.Nd6 Qe7+–) 40...Qe7 (40...Qc7 41.Ne4 Qc4 42.Qf7+–) 41.Nd3 (41.Ne4 Qc7 42.Nd6 Qc5+–) 41...Ng7 (41...Bg5 42.Bb4 Qd7 43.Qg5 Qd3 44.Bc5+–) 42.Qf3 Nf5 (42...h6 43.Bb4 Qc7 44.Qa8 Kh7 45.Bc5+–) 43.Bd2 (43.Qa8 Kg7 44.Bb4 Qd8 45.Qd8 Bd8+–) 43...Nd4 (43...Qc7 44.c5 Be7 45.Qa8 Kg7 46.c6+–) 44.Qh5 (44.Qa8!? Kg7+–) 44...Nf5 45.c5 Ng7 46.Qg4 (46.Qf3 Qd7+–) 46...h5 (46...Nf5 47.Ba5+–) 47.Qg2 Nf5 (47...Qd8 48.Qf3 Be7+–) 48.Nf4 (better is 48.Qa8 Qd8 49.Qd8 Bd8 50.Kg2+–) 48...Qc5 49.Nh5 (49.Qf3 Qd4 50.Qh5 Kg7+–) 49...Qe5? (49...Qd4!? 50.Be3 Qd1 51.Kh2 Qh5 52.Ba7 Qe2=) 50.Qf3 (better is 50.Qa8 Kh7 51.Qa7+–) 50...Nd4?? (50...Qa1 51.Kh2 Qa4 52.Qa8 Kh7 53.Bc3+/–) 51.Qg4 (better is 51.Qf7 Nf5 52.Nf4 Qg7 53.Ng6 Kh7 54.Qg7 Kg7 55.Nh4 Nh4 56.Be3+–) 51...Ne2?? (better is 51...Nf5+/–) 52.Kf1+– (52.Kf1 Be7 53.Qe2+–) 1–0. overtoom – cubanisimo, gameknot.com, 2013.

6.Bd4 b6 7.e4 Ndf6 8.e5 Nd5 +–.

6.Bd4 b6 7.g3 f6 (better is 7...Ndf6!?+/–) 8.e4 e5 9.Ne5! fe5 10.Qh5 g6 (10...Ke7 11.Qe5 Kf7 12.Qh5 g6 13.Qd5 Qd5 14.ed5 Nf6+–) 11.Qe5 Nge7 (11...Nde7 12.Qh8 a6 13.ba6+–) 12.Qh8 c5 (12...Nf5 13.Qe5 Qe7 14.ef5 Bf5 15.Bc4+–) 13.Bg7 Nc7 (13...Kf7 14.ed5 Bg4 15.Bf8 Qf8 16.Qh7 Qg7 17.Qg7 Kg7+–) 14.Qf8 Kd7 15.Bh3 Kd6 1–0. orane (1980) – vello01, Live Game Caissa's Web, 2004.

6.Bd4 Bd7 7.c4 Nb6 8.e3 f6 9.Be2 (9.c5 Nd5 10.Bc4 c6+–) 9...e5 10.Bb2 Be6 11.d3 (11.Qc2 Qe7+/–) 11...Bc5 (11...a6 12.ba6 Ra6 13.Nc3+/–) 12.0–0 Ne7 13.Qc2 (better is 13.d4 Bc4 14.dc5 Qd1 15.Rd1 Be2 16.Rd2 (16.cb6? Bd1 17.Ne5 fe5–+) 16...Bf3 17.cb6= (worse is 17.gf3 Na4–/+)) 13...0–0? (13...Bf5 14.Nbd2+/–) 14.Nc3 (better is 14.d4 ed4 15.ed4+– (15.Nd4?! Bd4 16.Bd4 Bf5+–; 15.Bd4?! Bf5 16.Qb3 Qd6+–)) 14...Qd6?? (better is 14...Bf5+–) 15.Ne4 (15.Ne4 Qd7 16.Nc5+–) 1–0. zabazaba (1685) – frechdachs, gameknot.com, 2014.

6.Bd4 Bd7 7.c4 Nf4 8.e3 Ng6 9.Bd3 Bg4 10.0–0 Nh4 11.Be4 Rb8 (11...Qc8 12.h3 Bh5 13.d3+–) 12.h3 Bf3 13.Bf3 (13.gf3?! e6 14.f4 Nf6+–) 13...Nf3 14.Qf3 b6 15.a4 (15.d3 f6+–) 15...e6 16.a5 Nf6 (16...Ne7 17.Nc3+–) 17.ab6 ab6 18.Qg3 (18.Nc3 Be7+–) 18...Nh5 (better 18...Ne4 19.Qg4 Nd6+–) 19.Qf3 Nf6 20.Bf6 gf6 21.d4 Bd6 22.Ra7 Ke7 23.Nc3 White plans d5 23...Rg8 (23...Ra8 24.Rfa1 Ra7 25.Ra7+–) 24.Ne4 f5 25.Nd6 Qd6 26.d5 (26.Rc1 h6+–) 26...Rg6 27.de6 fe6 (27...Rbg8 28.ef7 Rg2 29.Qg2 Rg2 30.Kg2 Kf7 31.Rfa1+–) 28.Rd1 Qe5 29.Qc6 Rbg8 (29...Kf6 30.Qc7 (30.Rc7?! Rbg8 31.Kf1 Rg2+–) 30...Qc7 31.Rc7+–) 30.Qc7 (30.Rc7?! Kf6 31.Kf1 Rg2+–) 30...Kf6 (30...Qc7 31.Rc7 Kf6+–) 31.Qe7 1–0. DEFFM – GuestQZPB, freechess.org, 2018.

6.Bd4 Bd7 7.e4 Nb6 8.a4 (8.Be2 Bg4 9.Be3 Nf6+–) 8...c6 (8...Bg4 9.Be3+–) 9.a5 (9.Nc3 Bg4 10.Be3 Nd7+–) 9...Nc8 10.c4 (better 10.Nc3+–) 10...b6? (better 10...Bg4!? 11.Be3 cb5 12.cb5 Nf6+–) 11.ab6+– Nd6? (11...Nb6 12.c5 Bg4 13.cb6 Bf3 14.Qa4+– (worse 14.gf3 Qd4 15.b7 Rb8 16.bc6 Qb6+–; worse 14.Qf3 Qd4 15.b7 Rb8 16.bc6 Qd6+–)) 12.Ne5 (12.bc6!? Bc6 13.Ne5 Bd7+–) 12...cb5 13.Ra7 bc4 (13...Nf6+–) 14.Rd7 Qc8 (14...Qd7 15.Nd7 Kd7 16.e5+–) 15.Ra7 Nf6 16.Qa4 Nd7 (16...Qc6 17.Qc6 Kd8 18.Ra8 Nc8 19.Qc8) 17.Ra8 Qa8 18.Qd7 1–0. DEFFM – GuestXLXH, freechess.org, 2018.

6.Bd4 Nf4 7.e3 Nd5 8.c4 Nb6 9.c5 Nd5 10.Bc4 Bg4 11.h3 Bf5 (11...Bh5 12.0–0+–) 12.d3 Bg6 (12...Bc8 13.0–0+–) 13.Ne5 Ngf6 (13...e6 14.c6 bc6 15.Nc6+–) 14.Qa4 (14.c6 Qc8+–) 14...e6 15.b6 (15.c6 b6+–) 15...c6 16.ba7 Be7 (better 16...Nd7 17.Nd7 Qd7+–) 17.Nc6?? (better 17.Nd2+–) 17...bc6+= 18.Qc6 Nd7 (18...Kf8 19.Qb7+=) 19.Bd5 ed5 20.Qb5 (20.Nc3 A) worse 20...Bd3 21.Qd5 (21.Nd5?! Ra7 22.Ne7 Qa5 23.Kd1 Rc7=; 21.Bg7?! Rg8 22.Nd5 Ra7=) 21...Ba6 22.c6+– (22.Bg7?! Rg8 23.Bd4 Rg5+–); B) 20...0–0 21.Nd5 Ra7+–) 20...0–0 21.c6 Nf6 22.Nc3 Ne8 (22...Qd6!?+=) 23.Nd5+– Nd6? (better 23...Nc7 24.Nc7 Qc7+–) 24.Ne7+– Qe7 25.Qb2?? (better 25.Qe5!? Qe5 26.Be5 Nb5+–) 25...Qc7 (25...Rfc8!? 26.Bg7 Rc6+=) 26.e4+– Qc6 27.0–0 (27.Bg7 Rfd8 28.Bf6 Rdc8+–) 27...Nc8? (better 27...Rfd8!?+=) 28.Bg7+– Rd8 29.Bh8 f6 (29...Kf8 30.Rfc1 Qd6 31.Qb4+–) 30.Bf6 (better 30.Rfc1 Qa6 31.Bf6 Rd3 32.Rc7 Be4 33.Re1+–) 30...Ne7?? (better 30...Rd3 31.Rac1 Qd7+–) 31.Be7+– Re8 (31...Rd3 32.Qb8 Kf7 33.Rac1+–) 32.Rac1 (32.Qf6 Qb5+–) 32...Qa6 (32...Qd7 33.Bc5 Qd3 34.Qf6+–) 33.Bc5 (better 33.Qf6 Qf6 34.Bf6 Ra7 35.Rc3+–) 33...Rf8 (33...Qd3 34.Qf6 Red8+–) 34.Bf8 Kf8 35.Rc7 Ra7 (35...Bf7 36.Qh8 Bg8 37.Qg7 Ke8 38.Qg8) 36.Qh8 1–0. DEFFM – GuestGKGN, freechess.org, 2018.

6.Bd4 Nf4 7.e3 Nd5 8.c4 Ndf6 9.Nc3 Bg4 10.h3 Bf3 (10...Bh5 11.g4 Bg6 12.Bg2+–) 11.Qf3 e6 (11...Qc8+–) 12.Qb7 Nh5 (12...a5+–) 13.Qc6 Ke7 (13...Qd7 14.Qa8 Qd8 15.Qd8 Kd8 16.Ba7+–) 14.Nd5! ed5 15.Bc5 Qd6 16.Bd6 (16.Qa8?! Qc5 17.cd5 Nhf6+–) 16...Ke6 17.Bf8 Ke5 (17...Kf5 18.Bd3 Kg5 19.h4 Kg4 20.Qd7 f5 21.Bf5) 18.Bg7! Ng7 (18...Ng7 19.f4 Mate attack) 19.f4 Kf5 20.Bd3 1–0. glovio – lady, gameknot.com, 2013.

6.Bd4 Nf4 7.e3 Ne6 8.Bb2 Nc5 (8...Nf6 9.Bc4+–) 9.Bc4 e6 10.0–0 Ne4 11.Ne5 Nef6 (11...Ngf6 12.d4+–) 12.Qf3 Bd6 13.Qg3 Nh5 14.Qg4 Ngf6 15.Qh4 0–0? (15...h6+–) 16.g4 g5 (16...a6 17.ba6 b5+–) 17.Qg5 Ng7 18.Nc6 bc6 19.Bf6 Be7 (19...Qf6 20.Qf6 cb5 21.Bb5 Ne8 22.Qg5 Kh8+–) 20.Qg7 1–0. DEFFM – GuestVLBJ, freechess.org, 2019.

6.Bd4 Nf4 7.e3 Ng2? 8.Bg2+– Qd5 (8...f6 9.Bc5+–) 9.Nc3 Qc4 (9...Qd6+–) 10.Ne5 (better 10.Ng5 f6 11.Bd5 Qd4 12.ed4 fg5+–) 10...Qe6 11.Bd5 Qf5 12.Bf7 (12.Nf7 e6 13.Be6 Be6 14.Nh8 Nf6+–) 12...Kd8 13.Bd5 e6 (13...Nh6 14.h4 Ke8 15.Be4+–) 14.Be4 Qh3 15.Nf7 Ke7 (15...Ke8 16.Nh8 Nf6 17.Qf3 Qf3 18.Bf3+–) 16.Nh8 Bd7 (16...Nf6 17.Bf3+–) 17.Bb7 Rb8 18.Qf3 Nf6 1–0. GuestTDMH – GuestJNYC, freechess.org, 2018.

6.Bd4 Bf5 7.c4 Nf4 8.g3 Ne6 9.Bb2 Be4 (9...a6 10.Bg2 Nc5 11.d4+–) 10.Bg2+– Nf6 (10...Qd6 11.Be5 Qd7 12.0–0+–) 11.d3 Bf5? (better 11...Bf3 12.Bf3 Qb8+–) 12.Nh4 Bg4 13.Bb7 Rb8 14.Bf6 (14.Bc6 Nd7+–) 14...ef6?? (better 14...Rb7 15.Be5 Bh3+–) 15.Bc6 Ke7 16.h3 Bh5 (16...g5 17.hg4 gh4 18.Rh4 Qd4+–) 17.Nf5 1–0. GuestWXQN – GuestPXLH, freechess.org, 2017.

6.Bd4 Bf5 7.d3 Ngf6? (better is 7...Ndf6+/–) 8.e4+– e5 (8...Ne4 9.de4 Be4 10.Nbd2+–) 9.Be5 (9.ef5?! ed4 10.Nd4 Bd6+=; 9.ed5 ed4 10.Qe2 Be7 11.Nd4 Bg4=; 9.Ne5?! Nb6 10.c3 Be6+–) 9...Ng4 (9...Ne4 10.de4 Be4 11.Nbd2+–) 10.ef5 Ne5 11.Ne5 Qf6 12.d4 Bd6 13.f4! Qf5 (13...Nf4 14.Qf3 Double attack (14.Qf3 Decoy)) 14.g3 (better is 14.Qf3 Nf4 15.Bd3 Nd3 16.Nd3 Qb5 17.Qe4 Kd8+–) 14...f6?? (14...Qe4 15.Qe2 Qh1 16.Ng6 Kd7 17.Qg4 Ke8 18.Nh8 Qf1 19.Kf1 Ne3 20.Ke2 Ng4 21.c4=) 15.Nd3 0–0?! 16.Be2 Ne3 17.Qd2 Ng2 18.Kf2 Qh3 19.Nc3 Rae8 20.Bf3 Nh4 21.gh4 Qh4 22.Kg2 f5 23.Rae1 Rd8 24.Ne5 Rf6 25.Rhg1 Be5 26.fe5 Rd4 27.Qe2 Rg6 28.Kh1 Rf4 29.Rg6 hg6 30.Bg2 Qh6 31.e6 Rh4 32.Bb7 Rh2 33.Qh2 (33.Qh2 Kh7 34.Qh6 Kh6 35.e7 c6 36.e8Q a6 37.Qd8 g5 38.Qh8 Kg6 39.Re6 Kf7 40.Qe8) 1–0. Fournier,Frederic – pochalla, rated blitz game (3/0), 2002.

6.Bd4 Bf5 7.e3 Bd7 8.c4 Ndf6 9.Be2 (9.Bd3 Nh6+–) 9...b6? (9...Nh6 10.Nc3+–) 10.0–0 (10.Ne5!? a6+–) 10...e6 11.Ne5 Bd6 (11...Ne7 12.Bf3 Rc8 13.Qa4+–) 12.Nd7 Qd7 (12...Kd7 13.Bf3+–) 13.Bf3 Rc8 (13...Qc8+–) 14.Bc6 Ne7 (14...Qc6 15.bc6 e5 16.Bc3+–) 15.Bd7 Nd7 (15...Kd7 16.Bf6 gf6 17.Nc3+–) 16.Bg7 Rg8 17.Bb2 h5 (17...c5 18.Nc3+–) 18.Qh5 c5 (18...c6 19.Nc3 Nf6 20.Qe2+–) 19.f4 Kd8 20.Qf7 Kc7 21.Qe6 Ng6 22.Nc3 Nh4 23.Nd5 Kb7 24.Qd7 Bc7 25.Be5 Ng2 (25...Rg7 26.Qg7 Nf5 27.Qd7 Nd4 28.Bc7 Ne2 29.Kf2 Nd4 30.Bb6 Rc7 31.Qc7 Ka8 32.Qa7) 26.Qc6 Kb8 27.Bc7 (27.Nc7 Ne3 28.Kh1 Rc7 29.Qc7 Ka8 30.Qc6) 27...Rc7 28.Qc7 Ka8 29.Nf6 Rg6 (29...a5 30.ba6 Nf4 31.Ng8 Nh3 32.Kg2 Nf4 33.Rf4 b5 34.Rf8) 30.Qc8 1–0. DEFFM – GuestHBGR, freechess.org, 2018.

6.Bd4 f6 7.c4 Nf4 8.e3 (8.Be3!? Ng6 9.Nc3+–) 8...e5+– 9.ef4 (9.Be5 fe5 10.ef4 ef4+–) 9...ed4+= 10.Bd3 Qe7 11.Kf1 Qd6 12.Qe2 (12.g3 Bh3 13.Kg1 Nh6+=) 12...Ne7 13.h3 (13.a4 Qf4 14.Be4 g5=) 13...Qf4= 14.c5 (14.Kg1 g6=) 14...Bf5 15.g3 Bd3 16.Qd3 (worse 16.gf4 Be2 17.Ke2 Ng6 18.Nd4 Nf4 19.Kf3 Bc5–+) 16...Qf5 17.Qf5 Nf5 18.g4 Ne7 (18...Nh6 19.c6 bc6 20.bc6=) 19.Nd4 0–0–0 (19...Ng6 20.Nb3=) 20.Ne6+= Re8 21.Nc3 Ng6 22.Re1 Ne5 23.Nf8 Rhf8 24.d4 Nf3 25.Rd1 f5 26.Kg2 (26.Ne2 Kd7+=) 26...Nh4= 27.Kg3 g5 28.Rd3 Ng6 (28...f4 29.Kh2 Rf7+–) 29.Rd2 (better 29.gf5!? Nh4 30.f3+–) 29...Nh4= 30.Rd3 Ng6 31.a4 (31.Rhd1 b6+–) 31...Rf7 32.Rhd1 Ref8 33.f3 (33.gf5!? Rf5 34.Ne4+=) 33...Nf4= 34.R3d2 fg4 35.hg4 (worse 35.Kg4 h5 36.Kg3 Nh3–/+; worse 35.fg4 Re7 36.Rd3 Nd3 37.Rd3 Rd8–/+) 35...Nh5 36.gh5 Rf3 37.Kg4 (37.Kg2 Rc3 38.Re1 Rd8=) 37...R3f4 (37...Rc3 38.Kg5 Rg3 39.Kh6 Rf6 40.Kh7 Rf7 41.Kh8 Rf8 42.Kh7 Rf7 43.Kh6 Rf6 44.Kh7 Rf7=) 38.Kg3 Rf3 39.Kg4 R3f4 40.Kh3 Rf3 41.Kg2 Rc3 42.Re1 Rd8 43.Re7 h6 (43...Rd7 44.Re5=) 44.Rh7+= Rc5 45.Rh6 Rc4 Exerts pressure on the isolated pawn 46.Rg6 Ra4 47.Rg5 Rad4 48.Rd4 Rd4 49.Rg8 Kd7 50.Rg7 Kd6 51.h6 Rh4 52.h7 a5 53.ba6 ba6 54.Kg3 Rh1 55.Kg2 Rh5 56.Kf3 a5 (56...Rh4 57.Rg6 Ke5 58.Rg7=) 57.Rg6 (better 57.Kg4 Rh1 58.Kg5+–) 57...Ke7 58.Rg7 Kd6 59.Rg6 Kc5?? (better 59...Ke7 60.Rg7 Kd6=) 60.Rg5!!+– Rg5 61.h8Q Rd5 62.Qf8 (62.Qa8 Kd6+–) 62...Kb5 (62...Kb6 63.Ke4 c6 64.Qb8 Ka6 65.Qc7+–) 63.Qb8 Kc6 64.Ke4 Rb5 65.Qe8 Kb6 66.Qb8 Kc6 67.Qe8 Kb6 68.Qa8 c6 (68...Kc5 69.Kd3+–) 69.Qd8 (69.Qb8!? Kc5 70.Qd8 Rb4 71.Ke5 a4+–) 69...Kb7 70.Qd7 Kb6 71.Qd8 Kb7 72.Qd7 Kb6 73.Qd4 Ka6 74.Qc3 Kb7 75.Qg7 Kb6 76.Qd4 Ka6 77.Qc3 Kb7 78.Qf6 Rd5 79.Qb2 Rb5 80.Qa3 Rb4 81.Ke5 Kb6 (81...Rb5 82.Ke6 Rd5 83.Qb3 Kc7 84.Qe3+–) 82.Qd3 (82.Qe3 c5+–) 82...a4 (82...Rb5 83.Ke6 Rd5 84.Qb3 Kc7 85.Qb2+–) 83.Qd8 Kb5 84.Qb8 Kc4 85.Qa7 (85.Qg8 Kb5+–) 85...Kb3 (85...Kc3 86.Kd6 Rc4 87.Qe3 Kb4 88.Qe1 Kb3 89.Qb1 Ka3 90.Ke5+–) 86.Qe3 Kc2 (86...Kb2 87.Qe2 Kb3 88.Qd3 Kb2 89.Qd2 Kb3 90.Kd6+–) 87.Qc5 (better 87.Qa3 Rc4+–) 87...Kb3 88.Qc6 a3 89.Qf3 Kb2 90.Qe2 Kb3 91.Qe3 Kb2 92.Qe2 Kb3 93.Qd1 Kb2 94.Qd2 Kb3 95.Qd3 Kb2 96.Qd2 Kb3 97.Qe3 Kb2 98.Qf2 Kb3 99.Qf3 Kb2 100.Qf2 Kb3 101.Qf1 (better 101.Qg3!? Kb2+–) 101...a2 102.Qe1 Rg4 103.Qd1 (better 103.Qa1+–) 103...Kb2= 104.Qd2 Kb1 105.Qe1 Kb2 106.Qf2 Kb1 107.Qf1 Kb2 108.Qe2 Kb1 109.Qe1 Kb2 110.Qe2 Kb1 111.Qd3 Kb2 112.Qd2 Kb1 113.Qd1 Kb2 114.Qd2 ½–½. GuestXPPM – GuestBTRG, freechess.org, 2020.

6.Bd4 f6 7.e4 Nb6 8.c4 Bg4 9.Bb2 (9.Be3 e5+–) 9...e5 10.Be2 (10.a4 Nd7+–) 10...Bc5 11.0–0 (11.Qb3 Ne7+=) 11...Ne7 (11...Bf3 12.gf3 Bd4 13.Nc3=) 12.d3 Ng6 13.a4 a5 14.Nbd2 Nf4 15.Nb3 Bb4 (15...Bf3 16.Bf3 Nd3 A) worse 17.Nc5 Nc5 18.Qc1 Qd7=+ (worse 18...Nca4 19.c5+–); B) 17.Bc3+=) 16.c5+– Nd7 17.d4 Ne2 (17...ed4 18.Bd4 Qe7 19.Qc2+=) 18.Qe2+– 0–0 19.de5 Ne5 20.Be5 fe5 (better 20...Bf3!? 21.Qc4 Kh8+–) 21.Qc4+– Kh8 22.Ne5 Bh5 23.f4 Qe7 24.g4 (24.c6 b6 25.g4 Be8+–) 24...Bf7 25.Nf7 Rf7 26.e5 Qh4?? (better 26...c6+–) 27.Qf7 Qg4 28.Kh1 Qe2 (28...Qh3 29.Rab1 Rc8 30.Nd4+–) 29.Qd5 Bc3 (29...Rb8 30.Rad1 h6 31.Nd4+–) 30.Rac1 Bb4 (30...Rg8 31.Qb7 Bb2 32.Rce1+–) 31.Nd4 Qd3 32.Rcd1 Qa3 (32...Qg6+–) 33.Nc2 Qc3 34.Qd8! Rd8 35.Rd8 A beautiful mate combination 1–0. GuestLLHG – GuestNXMH, freechess.org, 2020.

6.Bd4 f6 7.e4 Nb6 8.Be3 Bg4 9.Be2 Nd7 10.Nd4+– e5 11.Bg4 ed4 12.Bd4 h5? 13.Bh5 Ke7 14.Nc3 b6 15.Qg4 c5 16.Nd5 Kd6 17.Bf7 cd4 18.Qe6 Kc5 19.Qc6 1–0. b4_player – opponent, gamecolony.com, 2007.

6.Bd4 f6 7.e4 Nf4 8.Be3 Ne6 (8...e5!? 9.d4+/–) 9.Bc4 c5 10.bc6! bc6 11.0–0 g5 12.Nc3 Rb8 (12...g4 13.Ne1 Nd4 14.f4+–) 13.Ba7 Rb7 14.Be3 h5 15.d4 Bh6 (15...g4 16.Nh4 Bh6 17.Nf5 Be3 18.fe3+– (18.Ne3?! Nd4 19.Rb1 Rd7+–)) 16.d5 Rd7 (16...g4 17.de6 Be3 18.Qd8 Kd8 19.fe3 gf3 20.gf3+–) 17.Qb1 (better is 17.Nd4!? Ng7 18.dc6 Rd6+–) 17...g4 (17...Rb7 18.Qa2 (18.de6?! Rb1 19.Rab1 Kf8+–) 18...g4 19.dc6+– (19.de6?! Be3 20.fe3 gf3 21.Rf3 Qa5+–)) 18.de6 gf3 19.ed7 Bd7 20.Qb6 Qb6 21.Bb6 e6 22.gf3 Ne7 23.Rfd1 Rg8 24.Kf1 Bf4 25.Bd4 Be5 26.Be5 fe5 27.Rab1 h4 28.Rb8 Bc8 29.Be6 h3 30.Bg8 Ng8 31.Rc8 1–0. Yannick – Thrustnicely, playchess.de, 2004.

6.Nd4 Qd7 7.e3 (7.e4 Nb6 8.Nf3 Nf6+/–) 7...e5 8.Nf3 Qf5 (better is 8...e4!? 9.Ne5 Qf5+/–) 9.c4 (9.Be5 f6 10.Bg3 Qd7+–) 9...Ndf6 (9...Nb6 10.Be5 Be6 11.Bc7 Bc4 12.Nd4+–) 10.Ne5 (10.Be5 Bd6 11.d4 Ne7+–) 10...Be6 (10...Nh6 11.d4+–) 11.Be2 (better is 11.d4+–) 11...0–0–0?? (11...Ne4 12.0–0 0–0–0 13.Qa4+–) 12.0–0 (better is 12.g4 Ng4 13.Bg4 Qe4+–) 12...h5 13.Nf3 h4 14.d4 h3 15.g3 Nh5?? 16.Nh4 Qg5 17.Bh5 g6?? 18.Nf3 Rh5?? 19.Nbd2 Qf5 20.e4 Qg4 21.Ne5?? Qg5?? 22.Ndf3 Qf6 23.d5 Bd7? 24.Nd7 Rd7 25.Bf6 Nf6 26.e5 Ne4 27.Qc2 Nc5 28.Rad1 Rf5 29.Nd4 b6 30.f4 Kb7 31.Nf5 gf5 32.d6 c6 33.Qe2 f6 34.bc6 Ka6 (35.Qb2 Nb3 36.Qb3 Bd6 37.Qa4) 1–0. TresHuevos – Rockthejam, Live Game Caissa's Web, 2005.

6.Nd4 e5 7.Nb3 e4 8.c4 +=.

6.Nd4 Ngf6 7.c4 e5 (7...Nf4 8.Nf3+=) 8.cd5 ed4 9.Bd4 Bd6 (9...Nd5!? 10.Qc2 Be6+/–) 10.Nc3 (10.e3 0–0 11.Qf3 Ng4+/–) 10...b6 (10...0–0 11.e3+–) 11.g3 (11.e4 0–0+–) 11...Bb7 (11...a6 12.Bg2+–) 12.Bg2 (12.e3 Be7 13.Qf3 0–0+–) 12...Qd7 (12...a6 13.e4 0–0 14.0–0+–) 13.Bf6 gf6 14.Ne4 (14.d4 a6+–) 14...0–0–0 (14...Qb5 15.Rc1+–) 15.Nc3 f5 16.0–0 f4 17.d4 fg3 18.fg3 h5 19.Ne4 Qb5 20.a4 Qe8 21.Qc2 Kb8 22.Ng5?? h4?? 23.Nf7 Qe3–+ 24.Kh1 Bd5 25.Bd5?? hg3–+ 26.Rf3 Rh2 0–1. coloplayah (2145) – mpopp (1820), net–chess.com, 2006.

6.e4 Nf4 7.Nd4 (7.Bd4 Nf6 8.Nc3 Ne6+–) 7...Nf6 (7...e5 8.Nf3 Bd6 9.d4 (9.Be5 Be5 10.Ne5 Qd4–/+) 9...ed4 10.Qd4+–) 8.e5 N6d5 9.Qf3 h5?? (better 9...Ng6 10.e6! fe6+–) 10.c4+– Bg4 11.Qe4 f5 (11...Rh6 12.cd5 Nd5 13.Bc4+–) 12.ef6 gf6 13.h3 f5 (13...Bc8 14.cd5 Qd6 15.Bc4+–) 14.Qe5 Rg8 (14...Rh7 15.hg4 Bg7 16.Qf5 Bd4 17.Bd4+–) 15.cd5 Bg7 (15...Qd5 16.Qd5 Nd5 17.hg4 Rg4 18.Nf5+–) 16.Qf4 Qd5 17.hg4 0–0–0 (17...Rd8 18.Qf5 Qf5 19.Nf5 Bb2 20.Ra2+–) 18.b6 e5 (18...ab6 19.Nb5 Rd7 20.Bg7 Rg7 21.Rh5 Qe6 22.Kd1 Qb3 23.Kc1 Rg4 24.Rh8 Rg8+–) 19.Qf5 Kb8 20.bc7 Kc7 21.Ne6 Kb8 22.Ng7 Qd2 23.Nd2 1–0. DEFFM – GuestRYLP, freechess.org, 2018.

6.Bd4 e6

7.c4 Nb6 8.e4 c6 9.c5 Nd7 10.Qa4 Bc5?? (better 10...Nc5 11.Qc2 Qe7 12.bc6 bc6+–) 11.Bg7 Ngf6 (11...cb5 12.Bb5 a6 13.Bh8+–) 12.Bh8 Bf2 (12...Ng4 13.d4 Ke7 14.h3 Nf2 15.Kf2 Qh8 16.Nc3+–) 13.Kf2 Ng4 (13...Nc5 14.Qd4 Qd4 15.Nd4 Nfe4 16.Ke3+–) 14.Kg3 Nde5 15.bc6 Ke7 16.Ne5 Ne5 17.Be5 f6 18.Qb4 Kf7 19.cb7 Qg8 20.Kf3 f5 21.ba8Q Qg4 22.Kf2 (22.Kf2 Qh4 23.g3 Qe7 24.Qc8 f4 25.Qe7 Ke7 26.Bb5 fg3 27.hg3 h5 28.Qe8) 1–0. Janek – Askxhyl, internet, 2018.

7.c4 Nf4 8.e3 e5 9.Ne5 (9.Be5 Nd3 10.Bd3 Qd3+–) 9...Ne6 (9...Nf6 10.Qc2+– (10.ef4?! Qd4 11.Nc3 Qf4+–)) 10.Bc3 Nf6 (10...Bd6 11.Qc2+–) 11.d4 Ne4 (11...Bd6 12.Nd2+–) 12.Bd3 Nc3 13.Nc3 Qg5 (13...Bd6+–) 14.0–0 (14.h4 Qd8 15.Qf3 Qf6+–) 14...Bd6 15.f4 Qe7 (15...Qd8 16.Qc2+–) 16.Nd5 Qd8 17.Qh5 (better 17.f5 Be5 18.fe6 Be6 19.de5 Bd5 20.cd5 Qd5+–) 17...Be5 (17...g6 18.Qe2 0–0+–) 18.fe5 0–0 (18...Rf8+–) 19.Qh7 1–0. GuestNDSG – GuestHLJH, freechess.org, 2020.

7.e4 Nb6 8.Nc3 (better is 8.Be2+–) 8...Be7?? (better is 8...f6+/–) 9.Bg7+– Bf6 10.Bh8 Bh8 11.a4 a5 12.ba6 Ra6 13.Ba6 ba6 14.e5 Nh6 15.d4 Nf5 16.a5 Nc4 17.Qd3 Nb2 18.Qe4 Bd7 19.Qb7 Bb5 20.Nb5 ab5 21.Qb5 Qd7 22.Qb2 Bg7 23.a6 Qb5 24.Qb5 c6 25.Qc6 Ke7 26.Qc7 Ke8 27.a7 Ne3 28.a8Q 1–0. mrkt – skarb1, zagraj.pl, 2006.

7.e4 Nde7 8.Be2 f5 (8...Ng6 9.0–0+–) 9.Nc3+– h6 (9...fe4 10.Ne4 Ng6 11.0–0+–) 10.0–0 Ng6 (10...Nf6 11.Bd3+–) 11.ef5 ef5 12.Re1 Nf6 (12...N8e7+–) 13.Bc4 Be7 14.Ne5 (14.Bc5 Ne4 15.Ne4 fe4+–) 14...Ne5 15.Be5 Rf8 (15...Kf8+–) 16.Bf6 Rf6 17.Nd5 Re6 18.Qh5 (18.Ne7?! Re1 19.Qe1 Qe7+–) 18...Kf8 (18...g6 19.Qh6 c6 20.bc6 bc6 21.Qg7+–) 19.Nf4 (19.Nf4 Qe8 20.Qf5 Qf7 21.Ng6 Kg8 22.Ne7 Qe7 23.Be6 Be6 24.Re6+–) 1–0. DEFFM – Mayko, freechess.org, 2018.

7.e4 Nf4 8.Nc3+/–.

7.e4 Nf4 8.g3 Ng6 9.Bc4 c5 10.bc6! bc6 11.0–0 (11.Nc3 c5 12.Ne5 a6 (12...cd4?? 13.Bb5 Ke7 14.Nc6 Kd7 15.Nd8 Kd8 16.Ne2+–) 13.Ng6 cd4 14.Nh8 dc3+–) 11...c5 12.Bb2 (12.Be3 Nf6 13.Nc3 Be7+–) 12...Nh6 (12...Rb8 13.Bc3+–) 13.d4 cd4 (13...Rb8 14.Bc3 cd4 15.Qd4+–) 14.Bd4 Bd6? (14...Ng4+–) 15.Bg7 (15.Bg7 Ng4 16.Bh8 Nh8 17.Bb5 Bd7 18.Nc3 Bb5 19.Nb5+–) 1–0. GuestCMGY – GuestCTGG, freechess.org, 2019.

7.e4 Ndf6 8.Bd3 Be7 9.e5 (9.Nc3 Nh6+–) 9...Nd5 10.0–0 Nh6 11.Qe1 (11.Nc3 0–0+–) 11...0–0 12.Qe4 f5? (better 12...g6+–) 13.ef6 Nf6 14.Bf6 Rf6 (14...Bf6 15.Qh7 Kf7+–) 15.Qh7 Kf8 (15...Kf7 16.Ne5 Ke8 17.Qg7 Qd6+–) 16.Qh8 Kf7 (16...Ng8 17.Bh7 Bd6 18.Qg8 Ke7 19.Qg7 Rf7 20.Qg5 Kd7+–) 17.Ne5 1–0. DEFFM – GuestQDTN, freechess.org, 2019.

6.Bd4 Ngf6

7.c4 Nf4 8.e3 Ng6 9.Be2 (9.Bf6 ef6 10.d4 Bg4+–) 9...Bf5 (9...Nd7 10.Bc3+–) 10.0–0 (10.Bf6 gf6 11.d4 e5+–) 10...e6 (10...Nd7 11.Bb2+–) 11.Nc3 (11.d3 Bd6+–) 11...Bd6 (11...Qe7 12.Ne5+–) 12.c5+– Be7 (12...Bf8 13.d3+–) 13.d3 (13.h3 e5 14.Ne5 Ne5 15.Be5 Nd7 16.Bg7 Rg8+–) 13...0–0+– 14.e4 (14.Qc2 Nd7+–) 14...Bg4 15.h3?? (15.Be3 e5+–) 15...Bh5?? (better 15...Bf3 16.Be3 Be2 17.Qe2 a6–+) 16.g4 (16.Be3 Bf3 17.Bf3 e5+–) 16...Ng4 (16...Nh4 17.Qa4 (17.Nh4?! Qd4 18.Qb3 Bg6+=; worse 17.gh5 Nf3 18.Bf3 Qd4–/+) 17...Nf3 18.Bf3+–) 17.hg4+– Bg4 18.Be3 Bh4? (better 18...Bc5!? 19.Bc5 Bf3+–) 19.d4+– f5 20.Qd3 (20.e5 f4 21.Bc1 Be7+–) 20...Qf6? (better 20...Bf3 21.Bf3 f4+–) 21.ef5 (21.e5 Qd8 22.Qc2 f4+–) 21...Bf5 22.Ne4 Be4 (22...Qd8 23.Qb3+–) 23.Qe4 e5 (23...Rab8+–) 24.de5 (worse 24.Qb7 ed4 25.Bd4 Qf4 26.Nh4 Qh4+–) 24...Ne5 (24...Qe7 25.Kg2+–) 25.Ne5 Rae8 26.Bc4 Kh8 27.Bd3 g6 28.Bd4 Qg5 (28...Kg7+–) 29.Ng4 Kg8 30.Bc4 Rf7 (30...Re6 31.Qe6 Rf7 32.Qf7) 31.Qe8 1–0. DEFFM – bwbbfcb, freechess.org, 2018.

7.e3 Ne4 8.Bd3 (8.Bd3 Ndf6 9.0–0+–) 1–0. GuestLBCN – GuestJKVX, freechess.org, 2020.

7.e3 Bf5 8.Bb2 e6 9.c4 Ne3? (better 9...Nb6+–) 10.fe3+– Bc5 11.Be2 Bd3 12.0–0 Ng4 13.h3 (better 13.Bg7 Rg8 14.Bd4 Bd4 15.Nd4 Qg5 16.Bd3 Ne3+–) 13...Ne3 (13...Nf6+–) 14.de3 Be3 15.Kh1 Be2 16.Qe2 Bc5 17.Nc3 (17.Bg7 Rg8 18.Bb2 Qe7+–) 17...Qe7 (17...0–0 18.Qe4+–) 18.Ne4 Bd6 (18...0–0 19.Ne5 Rad8 20.Nf6 gf6 21.Ng4+–) 1–0. BeepBeepImAJeep – Steffen231987, lichess.org simul, 2017.

7.e3 Bg4 8.Be2 Bf3 9.Bf3 Qd6 10.Bf6 Qf6 (10...ef6?? 11.c4 Ne7 12.Bb7+–) 11.d4 e5?? (better 11...0–0–0+–) 12.Bd5 ed4 (12...0–0–0 13.Nc3+–) 13.Bb7 Rb8 (13...Rd8 14.Bc6 Ke7+–) 14.Bc6 Ke7 (14...Kd8 15.Nc3 Bd6 16.Ne4+–) 15.Nc3 dc3 (15...Rd8 16.Nd5 Rd5 17.Bd5 g5 18.ed4 Qf5+–) 16.Qd7 1–0. GuestVLPV – Unte, freechess.org, 2020.

7.e3 Bg4 8.h3 Bf3 9.Qf3 c6 10.c4 Nc7 11.bc6 bc6 12.Qc6 Nd7 13.Nc3 f6 14.Ne4 e5 15.Bc3 Be7 16.Rb1 0–0 17.Rb7 Rc8 18.Ba5 Ba3 19.Bc7 Qe7 20.Ra7 Bc5 21.Qd5 Rf7 22.Bd6 Bd6 23.Nd6 Nb6 24.Re7 Nd5 25.Rf7 Rc6 26.Rd7 Nb4 27.Rd8 1–0. pierre – szqopp, internet, 2010.

6.Bd4 Bg4

7.Bb2 Bf3 8.ef3 f6 9.Bc4 (9.Qe2 Qd6+–) 9...e5 (9...Qd7 10.0–0+–) 10.0–0 (10.d4 Nb6 11.Bg8 Rg8+–) 10...Bc5 (10...Qd7 11.d4 Nb6 12.Qe2 Nc4 13.Qc4+–) 11.Nc3 (11.d4 ed4 12.Bd4 Bd4 13.Qd4 Nge7+–) 11...Nb6 (11...Nc3 12.Bc3 Bd4 13.Qe2+–) 12.Bb3+– Ne7 (12...Qd7 13.f4! Bd4 14.a4+–) 13.Ne4 Bd6 (13...Nd7 14.f4! (14.Nc5?! Nc5 15.Re1 Qd6+–) 14...Bd4 15.c3+–) 14.f4! (14.Nd6?! Qd6 15.f4 ef4+–) 14...Qd7 (14...ef4 15.Nd6 Double attack) 15.Qh5 g6?? (15...Kd8 16.fe5 Be5 17.Be5 fe5+–) 16.Nf6 Kd8 17.Qe2 Qf5 18.fe5 Bc5 19.Ne4 Ned5 (19...Ba3 20.Ra3 Qf4 21.Rfa1+–) 20.Nc5 Nf4 (20...Kc8 21.f4!+–) 21.Qf3 1–0. Pierre – Guest745g, internet, 2020.

7.c4 Bf3 8.ef3 Nf4 9.Be3 Nd3 10.Bd3 Qd3 11.Qa4 a6? (better is 11...g6!? 12.Nc3 Bg7+/–) 12.ba6+– Qd7 (12...c6 13.ab7 Ra4 14.b8Q Qd8 15.Qd8 Kd8 16.d3+–) 13.Qd7 Kd7 14.ab7 Rb8 15.a4 Rb7 16.a5 Nf6 17.a6 Rb8 18.Bd4 e6 19.Bf6 gf6 20.Nc3 Bd6 21.Nb5 Ra8 22.Ke2 Rhb8 23.d4 c6 24.a7 (better is 24.Nd6 Kd6 25.Kd3+–) 24...Rb7 25.Nd6 Kd6 26.Ke3 Rba7 27.Ra7 Ra7 28.Rb1 f5 (28...Ra3 29.Ke2+/–) 29.Rb8 (29.Rb3 f6+–) 29...f6 (29...Ra3 30.Kd2+/–) 30.c5 (30.Rd8 Kc7 31.Rf8 Ra3 32.Kf4 Rd3+–) 30...Kd5+/– 31.Rd8 Kc4 32.Rd6 (better is 32.Re8!? Kd5 33.Kf4+/–) 32...e5+= 33.de5 fe5 34.Rc6 Ra3 35.Kd2 Ra2 36.Ke1 Kd3?? (better is 36...Ra1 37.Ke2 Ra2 38.Kd1 Ra1 39.Kc2 Ra2 40.Kc1 Rf2+=) 37.Rd6+– Kc4 38.c6 Ra7 (38...Ra8 39.c7 Rc8 40.Rd7+–) 39.Rd7 Ra8 (39...Ra1 40.Kd2 Ra2 41.Kd1 Ra1 42.Kc2 Ra2 43.Kb1+–) 40.c7 Rc8 41.Rh7 Kb5 42.Rf7 Kb6 43.h4 Rc7 (43...Re8+–) 44.Rc7 Kc7 45.h5 Kd6 46.g4 (better is 46.h6 Ke6 47.h7 Kd5+–) 46...fg4 (46...Ke6+–) 47.fg4 Ke6 48.Ke2 Kf6 (49.h6 Kg6+–) +–. market (1855) – Knightseyes (1680), GameColony.com, 2002.

7.c4 Bf3 8.gf3 Nf4 9.e3 Qd6 10.c5+– (10.ef4 Qd4 11.Nc3 0–0–0–/+) 10...Qd7 11.Nc3 (better 11.c6 bc6 A) worse 12.ef4 Qd4 13.Qc2 c5=+ (worse 13...Qa1 14.Qc6 Kd8 15.Qa8 Kd7 16.Qd5 Ke8 17.Bd3+–); B) 12.bc6+–) 11...0–0–0? (better 11...c6!?+–) 12.c6 (12.Qa4 Qe6 13.Qa7 Kd7 14.Qb7 Ke8 15.Qc7 Rd4+–) 12...Qd6 (12...bc6 13.Qa4 c5 14.Qa7 Qd6+–) 13.cb7 (13.Qa4 Nf6 14.Qa7 Ng2 15.Bg2 bc6 16.f4+–) 13...Kb8 (13...Kb7 14.Qa4 Kc8+–) 14.Qa4 (14.ef4?! Qd4 15.f5 Nh6+=) 14...c5 (14...Kb7 15.Ne4 Qd4 16.ed4 Kb8+–) 15.bc6 (15.ef4?! Qd4 16.Ra2 Qa4 17.Na4 e6+=) 15...Ne6 16.Qa7 Kc7 17.b8Q Kc6 18.Bb5 1–0. DEFFM – arwana, freechess.org, 2018.

7.c4 Bf3 8.gf3 Nf4 9.e3 Ne6 10.Bc3 (10.Be5 Nf6+–) 10...Ng5? (10...a6!?+–) 11.h4 (11.Bg2 Ne6+–) 11...Ne6 12.d4 c6 (12...Nf6 13.Nd2+–) 13.bc6 bc6 14.Bg2 (14.f4 Qd7+–) 14...Qb6 (14...Nf6 15.f4 Qd7 16.Nd2+–) 15.Qa4 Nf6 (15...g6 16.c5 Qb5 17.Qb5 cb5 18.f4+–) 16.Nd2 Nh5 (16...Rc8+–) 17.f4 (17.Rb1 Qc7 18.f4 Rc8+–) 17...Nc7 (17...Rc8 18.Rb1 Qc7+–) 18.Bc6 (18.Bc6 Kd8 19.Ba8 Na8 20.Ba5+–) 1–0. DEFFM – GuestLYQD, freechess.org, 2019.

7.e3 e6 8.h3 Bh5 9.g4 Bg6 10.Bg2 c5 11.bc6+– bc6 12.c4 Ndf6 13.Ne5 Ne7 14.Nc6 (14.Nc6 Nc6 15.Bc6 Nd7 16.Qa4+–) 1–0. Woelfelschneider,Peter – Krohs, 2008.

7.e3 Bf3 8.Qf3 Ngf6 9.c4 Nb6 10.Qb7 Qc8 11.Qc6 Qd7+–.

7.e3 Bf3 8.Qf3 Ngf6 9.c4 Nb6 10.Qb7 e6 11.Be2 Be7 12.Bf3 Rb8 13.Qc6 (13.Qa7 0–0 14.d3 Rc8+–) 13...Nbd7 (13...Qd7+–) 14.Ba7 Rc8 15.0–0 0–0 16.d4 White plans c5 16...Re8 (16...g6 17.Qa6+–) 17.Qa6 Nb8 18.Qa5 Bd6 (18...Nbd7 19.Nd2+–) 19.c5 Be7 20.Bb7 c6 (20...Nbd7 21.Nc3+–) 21.Qd8 Red8 (21...Rcd8 22.bc6 Rc8 23.Bc8 Nc6 24.Bb7 Na7 25.Nc3+–) 22.Bc8 (22.b6 Ne4+–) 22...Rc8 23.a4 Nbd7 (23...Kf8 24.b6 Nfd7 25.Nc3+–) 24.b6 Nd5 (24...Ra8 25.Nc3+–) 25.b7 Re8 (25...Rc7 26.b8Q Nb8 27.Bb8+–) 26.a5 Nb4 (26...f5 27.a6 Nc7 28.Bb6 Na6 29.Ra6+–) 27.a6 Na6 (27...Bf8+–) 28.Ra6 g6 29.Rc6 1–0. GuestJVKF – GuestPMWH, freechess.org, 2020.

7.e3 Bf3 8.Qf3 Ngf6 9.Bc4 e6 10.0–0 (10.Nc3 c6+–) 10...c6 (10...Be7 11.Nc3 0–0 12.g3+–) 11.bc6 bc6 12.Bb3 Qa5 13.e4 Qa4?? (13...Ne7+–) 14.Ba4 Ne7 15.e5 (better 15.Bf6 gf6 16.e5 Rc8 17.ef6 Nd5+–) 15...Nfd5 16.c4 Nb6 17.Bc6 Nc6 18.Qc6 Kd8 19.Bb6 Ke7 (19...ab6 20.Qb6 Ke8 21.Qc6 Ke7 22.Qb7 Ke8 23.Qa8 Kd7 24.Qb7 Ke8 25.Qb8 Kd7 26.Nc3 Bc5 27.Qb5 Kd8 28.Qc5 Kd7 29.Qa7 Kc6 30.Nb5 Rb8 31.Nd4) 20.Qb7 (20.Qb7 Ke8 21.Qa8 Kd7 22.Qd8 Kc6 23.Qc7) 1–0. DEFFM – GuestSMGS, freechess.org, 2019.

7.e3 f6 8.c4 e5 9.Bb2 Nb6 10.d4 e4 11.h3 (11.Qc2 ef3 12.Qe4 Ne7 13.Qg4 fg2 14.Qg2 Na4+–) 11...Bh5 12.g4 Bg6 13.Nh4 Nc4?? (better 13...Nh6+–) 14.Bc4+– h5 1–0. DEFFM – GuestJJKZ, freechess.org, 2018.

7.e3 Ngf6 8.c4 Nb6 9.Be2 e6 10.0–0 Be7 11.c5 Nbd5 (11...Nbd7 12.c6 bc6 13.bc6+–) 12.Ne5+– Be2 13.Qe2 c6 (better 13...a6!?+–) 14.bc6 bc6 15.Nc6 Qc7 16.Ne7 Qe7 17.Qb5 Qd7 18.c6 Qc8 (18...Qc7 19.Nc3 0–0 20.Nd5 Nd5 21.e4+–) 19.Bf6 (19.Rc1 0–0+–) 19...Nf6 20.Qc5 Ne4 21.Qc2 (21.Qc2 Nf6 22.Rc1+–) 1–0. DEFFM – GuestFCMC, freechess.org, 2018.

7.e3 Ngf6 8.c4 e6?? 9.cd5 Qd5 10.Nc3 Qd8 (10...Qf5 11.Be2 Bf3 12.Bf3+– (worse 12.gf3 e5 13.e4 Qe6+–)) 11.Be2 Bd6 12.h3 (12.Qa4 Bh5 13.b6 c6 14.ba7 Bf3 15.Bf6 Qf6 16.Bf3 0–0+–) 12...Bh5 (12...Bf3 13.Bf3 (13.gf3?! e5 14.Be5 Be5+–) 13...e5 14.Be5 (14.Bb7?! ed4 15.Bc6 Kf8 16.ed4 Qe7 17.Ne2 Rb8+–) 14...Be5 15.d4+–) 13.0–0 (13.g4!? Bg6 14.g5 Nd7 15.Bg7 Rg8+–) 13...0–0 (13...Bf3 14.Bf3 (14.gf3?! e5+–) 14...e5 15.Be5 Be5 16.d4+–) 14.Qb3 b6 (14...Bf3 15.Bf6 (worse 15.Bf3 e5 16.Be5 Be5+–; 15.gf3?! e5 16.Be5 Be5+–) 15...Qf6 16.Bf3+– (16.gf3 Qg5 17.Kh1 Qh5+=)) 15.Ne5 (15.Rfc1 Rc8+–) 15...Be2 16.Ne2 Ne4 (16...Be5 17.Be5 Nd7 18.d4+–) 17.Nc6 Qg5 18.f4 Qh6 (18...Qh5 19.Qd3 Qg6+–) 19.Rf3 (better 19.Qc2 f5 20.d3+–) 19...Nd2+– 20.Qd3 Nf3 21.gf3 Qh3 22.Qe4 (better 22.e4+=) 22...f5?? (better 22...a6 23.ba6 Ra6=) 23.Qe6+– Kh8 24.Ne5 (better 24.Rf1 Qh5 25.Rf2 Qg6 26.Qg6 hg6 27.Rg2+–) 24...Qh6?? (better 24...Be5 25.fe5 Qf3=) 25.Nf7 (better 25.Qh6 Rf6 (25...gh6?? 26.Nf7 Kg8 27.Nh6) 26.Qh5 Kg8+–) 25...Rf7 26.Qf7 (better 26.Qh6 Kg8 27.Qe6+–) 26...Rf8 27.Qg7 (better 27.Qd5+–) 27...Qg7= 28.Bg7 Kg7 29.Kf2 Bc5 30.Rg1 Kh8 (30...Kf6 31.Rh1=) 31.Nd4 Ba3 (31...a5 32.ba6 Bd4 33.ed4=) 32.Rg5 The isolani on f5 becomes a target 32...Bd6 (32...Be7 33.Rf5 Rf5 34.Nf5+=) 33.Nf5+= Rg8 34.Nd6 cd6 35.Rd5 (35.e4+=) 35...Rd8 (better 35...Rg6!?+=) 36.e4+– Kg7 (36...Rf8 37.Rd6 Rf4 38.Rd7+–) 37.e5 Kf7 38.f5 Ke7 39.e6 (39.f4 Ke8 40.f6+–) 39...h5= 40.f4 Rc8 41.Rd2? (41.Kf3 Rc3 42.Ke4 Rb3=) 41...Rc4 (better 41...Rc5 42.Ra2 Rf5 43.Ra7 Ke6–+) 42.Ke3= Rc3 43.Kd4 Rc5 44.Ke4 Rb5 45.Rh2 Rb4 46.Ke3 Rb3 47.Ke4 Rb4 48.Ke3 Rb3 49.Kd4 Rb4 50.Ke3 Rb3 51.Kd4 Rb4 52.Ke3 Rb3 53.Kd4 Rb4 54.Ke3 Rb3 55.Kd4 Rb4 56.Ke3 Rb3 57.Kd4 Rb4 58.Ke3 ½–½. GuestKJYF – GuestHDHB, freechess.org, 2019.

7.e3 Ngf6 8.Be2 e6 9.0–0 Be7 (9...Qd6 10.c4 Nf4 11.ef4 Bf3 12.Bf3 Qd4 13.Bb7+–) 10.h3 Bh5 11.g4 (11.c4 Nf4+–) 11...Bg6 12.c4 Nb6 13.a4 (13.g5 Ne4+=) 13...0–0 14.Ne5 Ne4 (14...Nbd7!?+–) 15.Bf3+– Ng5 16.Bb7 (16.Ng6 fg6 17.Bg2 Bf6 18.Bf6 Qf6+–) 16...Rb8 (16...Nh3 17.Kh2 Rb8 18.Nc6+– (18.Kh3?! Rb7 19.Qf3 c6+–; 18.Ng6?! fg6 19.Kh3 Rb7+–)) 17.Bg2 Bb1 (17...c5 18.bc6 Bb1 19.Rb1 f6 20.Bb6 Rb6 21.Rb6 ab6+–) 18.Nc6 Qe8 19.Qb1 (better 19.Rb1 e5 20.Be5 Nc4+–) 19...Nc4 (19...e5 20.Nb8 ed4 21.Nc6 de3 22.fe3+–) 20.Qd3 (worse 20.Nb8 Nd2 21.Qd1 Nf1 22.Ba7 Bf6+–) 20...Nb6 (20...Nd6 21.Nb8 Qb8 22.f4+–) 21.h4 (21.Nb8 Qb8 22.f4 e5 23.Bb6 Nh3 24.Bh3 cb6+–) 21...e5 22.Bb6 (worse 22.hg5 ed4 23.a5 Nd7 24.Nb8 Qb8 25.Qd4 Rd8+–) 22...e4 (22...Nh3 23.Bh3 Rb6 24.g5+–) 23.Qd5 (23.Be4 Ne4 24.Qe4 Rb6 25.Qe7 Qc8+–) 23...Nf3 (23...Nh3 24.Bh3 cb6 25.Nb8 Qb8 26.Bg2+–) 24.Bf3 ef3 (24...cb6 25.Nb8 ef3 26.Nc6+–) 25.Bc7 Rc8 26.Bg3 Kh8 27.Na7 Rc5 (27...Rd8 28.Qc6 Rd2 29.Qe8 Re8 30.a5+–) 28.Qf3 f5 (28...Rc2 29.b6 Bc5 30.Rfb1+–) 29.g5 Qg6 (29...f4 30.Bf4 Bd6 31.Nc6+–) 30.Nc6 Bd8 (30...f4 31.Ne7 Qe8 32.Bf4 Qe7 33.d4+–) 31.d4 Rc2 (31...Rc3 32.Qd5 Bb6 33.a5+–) 32.Qd5 Bb6 33.a5 Rc6 34.bc6 (better 34.Qc6!? Qc6 35.bc6 Ba7+–) 34...Bd8 35.a6 (35.a6 Bb6 36.Rfb1+–) 1–0. DEFFM – GuestDCZY, freechess.org, 2018.

7.e3 Ngf6 8.Be2 e6 9.Ne5 h5 (9...Be2 10.Qe2 (worse 10.Ke2 Ne7+=) 10...Nd7 11.0–0+–) 10.Ng4 hg4 11.Bg4 Ng4 12.Qg4 Nf6 13.Bf6 (13.Qf3!? Qd5+–) 13...Qf6+– 14.Nc3 0–0–0 15.a4 (15.Qa4 Qg6 16.g4 Bc5+–) 15...Kb8 (15...Rh4 16.Qf3 Qf3 17.gf3+–) 16.a5 Bc5 (better 16...Rh4 17.Qf3 Qf3 18.gf3 Bb4+–) 17.0–0?? (17.Ra4 Bd6+–) 17...Rh6 (better 17...Rd2 18.Ne4 Qe5=) 18.d4+– Bd6 19.h3 (19.f4 Rdh8 20.h3 Bb4+–) 19...Rdh8 (better 19...Rh4!? 20.Qe2 e5+–) 20.Ne4+– Qe7 21.Nd6 Qd6 (21...cd6 22.Qg7 e5 23.de5 de5 24.Rfd1+–) 22.Qg7 a6 23.ba6 ba6 (23...Qa6 24.Qf7 Kc8 25.Rfb1+–) 24.Rfb1 Ka7 (24...Kc8 25.Qf7 R6h7 26.Qf3+–) 25.Qf7 Rh3 (25...Rf8 26.Qg7 Rfh8 27.Rb6+–) 26.Kf1 (better 26.gh3 Rh3 27.Qe8 Qh2 28.Kf1+–) 26...Rh1 27.Ke2 Rb1 28.Rb1 Rc8 (28...Qc6 29.Kd3 Rc8 30.c4+–) 29.Qf3 c6 30.Qe4 Rg8 (30...Rc7 31.Rb6 Qh2 32.d5 (worse 32.Rc6 Qh5 33.Ke1 Rb7+–) 32...cd5 33.Qd4 Rc2 34.Kd3 Qh7 35.e4 Qe4 36.Qe4 Rd2 37.Kd2 de4 38.Ke3 Ka8 39.g3 Ka7 40.g4 Ka8 41.g5 Ka7 42.g6 Ka8 43.g7 Ka7 44.g8Q e5 45.Qb8) 31.Rb6 (31.Qh7 Rg7 32.Qg7 Qe7 33.Qe7 Ka8 34.Qb7) 31...Rc8 (31...Qd7+–) 32.Qh7 (32.Qd3 Qd4 33.Qa6) 32...Rc7 (32...Qc7 33.Qd3 Qb6 34.ab6 Kb6 35.Qb3 Kc7 36.Qe6 Rb8+–) 33.Qg8 (33.Qd3 Ka8 34.Qa6 Ra7 35.Qc8 Qb8 36.Rb8) 33...Rb7+– 34.Rb7 Kb7 35.Qf7 Kb8 (35...Kc8 36.Qa7 Qd5 37.Qa6 Kc7 38.Qb6 Kd7 39.a6+–) 36.Qe8 (better 36.Qf4 Qf4 37.ef4 Kc7+–) 36...Kb7 37.g4 (better 37.c4 Qc7+–) 37...c5 (37...Qd5+–) 38.Qf7 (38.dc5 Qd5 39.c6 Kc7 40.Qd7 Qd7 41.cd7 Kd7+–) 38...Kc6 (38...Kc8 39.dc5 Qe5 40.Qf8 Kb7 41.Qd8 Qc5 42.Qb6 Qb6 43.ab6+–) 39.Qf3 (better 39.Qa7!? Qd5 40.Qa8 Kd6 41.Qd5 Kd5+–) 39...Kb5 40.Qe4 cd4 (40...Qd7 41.dc5 Kc5 42.c3+–) 41.Qd3 (better 41.Qd4 Qh2 42.Qb6 Ka4 43.Qb3 Ka5+–) 41...Ka5 42.Qd4 (worse 42.ed4 Qd7+–) 42...Kb5 (42...Qe7 43.c3 Kb5 44.Qb4 Qb4 45.cb4 Kc6+–) 43.Qd3 (better 43.Qd6 a5 44.g5 a4+–) 43...Kb6 (43...Qd3 44.Kd3 Kc5+–) 44.c4 (44.Qd6 Kb7 45.c4 Ka8 46.c5 a5 47.c6 a4 48.Qd7 a3 49.Qb7) 44...a5 (44...Qe7 45.f4+–) 45.Qb3 (45.Qd6 Kb7 46.c5 e5 47.Qb6 Kc8 48.c6 e4 49.Qb7 Kd8 50.Qd7) 45...Qb4 (45...Kc7+–) 46.Qb4 ab4 47.Kd2 (47.g5 Kc5 48.g6 b3+–) 47...Kc5 (47...Kc6 48.Kc2+–) 48.Kc2 Kc4 49.g5 b3 50.Kb2 e5 51.g6 (51.g6 Kd3 52.Kb3+–) 1–0. aravind555 (1715) – Karo_grandmaster (1650), lichess.org, 2020.

7.e3 h5 8.Be2 Bf3 (better 8...Nh6+–) 9.Bf3 (9.gf3?! e6+–) 9...c6 (9...Qd6 10.c4 (10.Bh5?! Ngf6 11.Bf6 Nf6+–) 10...e5 11.Bb2+– (11.cd5?! ed4 12.Qa4 Qb6+–)) 10.c4 (better 10.bc6 b5+–) 10...Nb6 (10...Nc7 11.bc6 b6 12.Nc3+–) 11.bc6 Nc4 (11...bc6 12.Bc6 Nd7 13.Ba8 Qa8+–) 12.cb7 Rb8 13.Bc6 Qd7 14.Bd7 Kd7 15.Qa4 Kc7 16.Qc4 (16.Qc4 Kd8 17.Qd5 Ke8 18.Qb5 Kd8 19.Qa5 Kd7 20.Qa7+–) 1–0. DEFFM – GuestXJWB, freechess.org, 2018.

7.h3 Bf3 8.ef3 e6 9.Nc3 Nc3 10.Bc3 Be7 11.Bg7 1–0. Machete99 – guest88, ICC, 2002.

5.Bd4 e6

6.a3 c5+/– 7.Bb2 Nd5 8.c4 Nb6 9.e3 Bd6?? 10.Bg7+– f6 11.Be2 e5 12.d4 e4 13.Nfd2 Qe7 14.Bh5 Kd8 15.Bh8 Bd7 16.Qc2 Kc7 17.Be2 Nh6 18.d5 Rh8 19.Qe4 Qe4 20.Ne4 Be5 21.Ra2 Rg8 22.0–0 Bd6 23.Nf6 Rg6 24.Nd7 Kd7 25.a4 a5 26.Nc3 Nf5 27.Bd3 Ne7 28.Bg6 hg6 29.Rc1 g5 30.Ne4 g4 31.Nf6 Kc7 32.Ng4 Nf5 33.f3 Nh4 34.Nf2 Ng6 35.Nd3 Ne5 36.Nb2 Nf7 37.g3 Ne5 38.f4 Nf3 39.Kg2 Nd2 40.h4 Nb3 41.Rc2 Kd7 42.Ra3 Nc4 43.Nc4 Nd4 44.ed4 cd4 45.Nd6 Kd6 46.Rd3 Kd5 47.Kf3 b6 48.g4 Ke6 49.Ke4 Kd6 50.Rc6 Ke7 51.Rd4 (51.Rd4 Kf7 52.Rc7 Ke8 53.h5 Kf8 54.Rd8) 1–0. Trkn – benj, itsyourturn.com, 2000.

6.a3 Nd5 7.e4 Nf4 8.Nc3 a6 9.g3 Ng6 10.ba6 ba6 11.Bc4 e5? 12.Ne5+– Qd4?? 13.Bf7 Ke7 14.Nc6 Kf7 15.Nd4 Nf6 16.Qb1 Bd6 17.Qb3 Ke7 18.f4 Bc5 19.Nd5 Nd5 20.Nc6 Kd6 21.Qd5 1–0. pierre – ezhil, internet, 2008.

6.a3 Nd5 7.e4 Nf4 8.g3 Ng6 9.Nc3 Nf6 10.Bc4 e5 11.Be5 Ne5 12.Ne5+– Qd4 13.Bf7 Ke7 14.Nf3 Bg4 15.Bd5 Bf3 16.Qf3 c6 17.bc6 bc6 18.Bc6 Rd8 19.Rb1 Qd2 20.Kf1 Qc3 21.Qc3 Ne4 22.Qe5 Kf7 23.Rb7 Kg8 24.Qe6 1–0. pierre – tiximov, internet live, 2010.

6.Bb2 Nf6 7.c4 Bc5 8.a3 Nbd5 9.cd5 Qd5 (9...ed5 10.e3+–) 10.e3 0–0 11.Bf6 gf6 12.Nc3 Qh5 (12...Qd8 13.Bc4+–) 13.Ne4 Be7 14.g4! Qg6 (14...Qg4 15.Rg1 Pinning (15.Rg1 Decoy)) 15.Qc2 Kh8 (15...a6 16.Bd3 Rd8 17.ba6 Rd3 18.Qd3 Ra6 19.Rg1+–) 16.Rg1 b6 (16...Rg8 17.Bd3+–) 17.Qc7 Qe4 (17...Bd7 18.Qd7 Qe4 19.Qe7 Qf3 20.Bg2 Qg4 21.Qf6 Kg8 22.f4+–) 18.Qe7 Qf3 (18...Kg8 19.Nd4 Qg6+–) 19.Qf8 1–0. Janek – Ramcal, internet, 2019.

6.Bc3 Nd5 7.Bb2 (7.Be5 Ngf6+/–) 7...Ngf6+= 8.e3 a6 (8...Be7 9.c4 Nb6 10.d4+/–) 9.a4 (9.ba6 ba6 10.c4 Rb8+/–) 9...ab5 (9...Bd6 10.Be2+/–) 10.ab5 Ra1 11.Ba1 Bb4 12.c4 Nb6 (12...Ne7 13.Bc3 Qd6 14.d4+/–) 13.Be2 0–0 14.0–0 Bd6 (14...Qe7 15.d4+/–) 15.Nd4 (15.d4 Be7+–) 15...Nbd7+/– 16.Nc3 (16.f4 Re8+/–) 16...e5 (better is 16...Re8+/–) 17.Qc2?? (better is 17.Nf5+/–) 17...ed4–+ 18.Ne4 Ne4 19.Qe4 Bc5 20.ed4 Nf6 21.Qe5 Re8 22.Qf4?? Re2 23.dc5 Re4?? 24.Qg3?? Qd2?? 25.Bf6+/– g6 26.Bc3 Qd8+/– 27.Qf3 Re8 28.Bf6 Qd7 29.Qc3 Qe6 30.h3 c6 31.b6 Bd7 32.Qa1 Qc4 33.Bh8 f6 34.Qf6 Qf7 35.Qc3 Bh3? 36.gh3 (36...Rf8 37.Be5+–; 36.Qh3?! Kh8 37.Rd1 Kg8+=) 1–0. ATUK – MEK, Live Game Caissa's Web, 2005.

6.c4 c5 7.Bb2 Qa5? (7...e5 8.a3 e4+–) 8.a3 Nd5 9.cd5 ed5 10.e3 c4 (10...Nf6 11.Be2+–) 11.Be2 Qb5 12.Qc2 (12.Bd4 Nf6+–) 12...Be6 (12...Nf6 13.Bf6 gf6 14.Nc3+–) 13.Nd4 Qd7 (13...Qa5 14.Bc3 Qc5 15.Bb4+–) 14.d3 Rc8 15.dc4 dc4 (15...Nf6 16.Ne6 Qe6 17.Qa4 Qc6 18.Qc6 bc6 19.Bd4+–) 16.0–0 b5 (16...Nf6 17.Nd2 b5 18.a4+–) 17.Nc3 a6 (17...Nf6 18.Rfd1 Be7 19.Ncb5+–) 18.Rfd1 Qe7 (18...Nf6 19.Ndb5 Qb7 20.Nd4+–) 19.Bf3 Nf6 20.Bc6 Nd7 (20...Bd7 21.Bd7 Qd7 22.Ndb5+–) 21.Qe4 g6 (21...Rc7 22.Qf3 Qf6+–) 22.Ne6 fe6 23.Rd7 Rc6 24.Re7 (24.Re7 Be7 25.Qc6 Kf7 26.Qf3 Kg8 27.Qa8 Kg7 28.Ne4 e5 29.Be5 Kf7 30.Qh8 h5 31.Qg7 Ke6 32.Qg6 Kd7 33.Rd1 Bd6 34.Qd6 Ke8 35.Qc7 c3 36.Rd8) 1–0. DEFFM – GuestVHPN, freechess.org, 2019.

6.c4 Nf6 7.a3 Nbd5 8.cd5 Qd5 9.Nc3 Qd8 10.a4 Be7 11.e3 Nd5 (11...a6 12.ba6 ba6 13.Rb1+–) 12.Bg7 Rg8 13.Nd5 ed5 14.Be5 Bg4 (14...Bf5 15.a5+–) 15.Be2 (15.Qc2 Bf3 16.gf3 Bf6 17.Bc7 Qe7+–) 15...Bf3 16.Bf3 Rg5 17.Bf4 Rf5 (17...Rg6 18.Qc2+–) 18.0–0 (18.Qc2 Rf4 19.ef4 Bf6+–) 18...Bf6 (18...Bd6 19.Bg4 Rf4 20.ef4 Bf4 21.g3+–) 19.Rc1 c6 (19...Bb2 20.Bc7 Qd7 21.Rc2+–) 20.bc6 bc6 21.Rc6 Ke7 (21...Be7 22.Qc2 Rf4 23.ef4+–) 22.Qb3 (better 22.Qb1 Rf4 23.ef4 Kf8+–) 22...Qd7 (22...Kf8 23.Qd3 Rf4 24.ef4 Kg7+–) 23.Rc7 Rf4 24.Rd7 Kd7 25.Qd5 (25.Qd5 Ke8 26.Qa8 Kd7 27.ef4 Ke7 28.Re1 Be5 29.Re5 Kf6 30.Qh8 Kg6 31.Qg8 Kf6 32.Qg5) 1–0. AustinGrandmaster – ALEMINGARDINO, lichess.org, 2020.

6.e4!? c5 7.Be3 +–.

5.Bd4 Bf5

6.Na3 e6 7.c3 Nd5 8.Nc4 Ngf6 (8...f6 9.Nh4 Nh6 10.Qa4+–) 9.d3 Be7? (better 9...Bg4+–) 10.e4+– Ne4 (10...Be4 11.de4 Ne4 12.Qc2+–) 11.de4 Be4 12.Bd3?? (12.Nfd2 Bf5 13.Bg7 Rg8+–) 12...Bd3? (better 12...Nc3!? 13.Qc2 Nb5 14.Be4 Nd4 15.Nd4 Qd4+–) 13.Qd3+– 0–0 (13...f6 14.Qe4 Qd7 15.Ncd2+–) 14.0–0 Nf4 (14...a6 15.a4+–) 15.Qc2 (15.Qe4 Qd5 16.Qf4 Qc4+–) 15...c5 (15...Qd5 16.Qb3+–) 16.Be5 (16.bc6 bc6 17.Rfd1 Qc8+–) 16...Nd5 (16...Qd3 17.Qd3 Nd3 18.Bc7+–) 17.Rad1 b6 (17...Bf6 18.Rfe1+–) 18.Ne3 f6 (18...Ne3 19.fe3 (19.Rd8 Nc2 20.Rd7 Bf6=+) 19...Qe8 20.c4+–) 19.Nd5 (19.Bf4 Ne3 20.fe3 Qe8+–) 19...ed5 20.Bg3 1–0. DEFFM – USMASKAMALOV, freechess.org, 2016.

6.Na3 e6 7.c3 Nd5 8.e3 Bg4 (8...e5 9.Be5 f6= (9...Ba3? 10.Bg7 Bb2 11.Rb1 Bb1 12.Qb1+–)) 9.Nc4+/– Bd6?? (9...f6 10.e4 e5 11.Be3 Ne3 12.Ne3+/–) 10.Be2 (better is 10.Bg7 Ngf6 11.Bh8+–) 10...Ngf6+/– 11.Bf6 (11.h3 Bh5+/–) 11...Nf6 12.a4 0–0 13.h3 Bf5 14.g4 (14.Nd6 cd6 15.0–0 Rc8+/–) 14...Be4 (14...Bg6 15.a5+=) 15.g5 (better is 15.d3 Bf3 16.Bf3+/–) 15...Rb8?? (better is 15...Nd5+=) 16.gf6 Bd5 (16...Qf6 17.Rg1 Bf5+–) 17.Nd6 Qd6 18.fg7 Kg7 19.Rg1 Kh8 20.c4 Be4 21.Rg4 (21.Qb3 e5+–) 21...f5 22.Rg3 1–0. Willi_weizenkeim – Chessplayer59, playchess.de, 2004.

6.d3 c5 7.Bc5 Qa5 8.c3 Nd5? (8...Na6 9.ba6 Qc5 10.ab7 Rb8+–) 9.e4 Nc3 (9...Qb5 10.Bd4 (10.ef5?! Qc5 11.d4 Qa5+–; 10.ed5?! Qc5 11.c4 Nf6+=) 10...Bg4 11.ed5 Bf3 12.gf3 (12.Qf3 Qb2 13.Qd1 Qa1 14.Qa4 Kd8+–) 12...Qd5 13.Rg1+–) 10.Qd2 b6 11.Qc3 (11.Nc3 bc5 12.ef5 g6 13.fg6 hg6+–) 11...Qc3 12.Nc3 bc5 13.ef5 0–0–0 (13...g6 14.fg6 hg6 15.h4+–) 14.Rc1 e6 (14...g6 15.Ne4 Kd7 16.Ne5 Ke8 17.fg6 hg6 18.Nc6+–) 15.fe6 fe6 16.Ng5 Nh6 17.Nce4 (17.g3 Kb8+–) 17...Kb8 (17...Kd7 18.Nc5 Bc5 19.Rc5+–) 18.Ne6 Re8 (18...Rd5 19.N6c5 Bc5 20.Rc5 Rc5 21.Nc5+–) 19.N6c5 Bc5 (19...Nf5 20.Be2 Nd4 21.Bg4+–) 20.Rc5 Ng4 (20...g6 21.Be2+–) 21.Be2 Nf6 (21...Ne5 22.Kd2 Nd7 23.Rc2+–) 22.Nf6 gf6 23.Kd2 Rhg8 (23...Re7 24.Rhc1+–) 24.Bf3 Re7 25.Rhc1 (25.Re1 Rd7+–) 25...Re5 (25...Rd8 26.Rd5 Rd5 27.Bd5+–) 26.Rc7 Rb5 27.Rh7 Rb2 28.Ke1 (28.Rc2 Rc2 29.Kc2 a6+–) 28...Re8 (28...f5 29.h4 Re8 30.Kf1+–) 29.Kf1 Rc8 (29...a5 30.h4 Rg8 31.h5+–) 30.Rc8 Kc8 31.Ra7 Rb1 (31...Rb4 32.g3 Rd4 33.Ke2+–) 32.Ke2 Rb2 (32...Rh1 33.h3+–) 33.Ke3 1–0. GuestWVGP – LeonCatoff, freechess.org, 2019.

6.d3 Qd5? 7.a3 Qb5 8.ab4 Qb4 9.Nc3 Bg4 (9...Rd8 10.Ra4 Rd4 11.Rb4 Rb4 12.Nd5+–) 10.Ra4 Qd6 11.Be5 (better 11.Nb5 Qd8 12.Be5 Bd7 13.Nc7 Qc7 14.Bc7 Ba4+–) 11...Qc6 (11...Qe6 12.Nb5 Rc8 13.Qa1 Bf3 14.gf3+–) 12.Rg4 f6 13.Rc4 Qe6 (13...Qa6 14.Bg3 e5 15.Qb1+–) 14.Nb5 fe5 15.Nc7 Kf7 16.Ng5 Kf6 17.Nge6 Rc8 18.Qa1 Rc7 19.f4 Ke6 20.Qe5 Kf7 21.Rc7 Nf6 22.f5 Kg8 23.Qe6 1–0. GuestKRWG – GuestMDQR, freechess.org, 2019.

6.d3 Qd5? 7.a3!? Nd3 8.cd3 Qb5+–.

6.d3 Qd5? 7.a3 Bg4 8.Be3 (8.ab4?! Bf3 9.Ba7 Bg4+–) 8...e6 9.ab4 Bb4 10.c3+–.

6.d3 Qd5? 7.e4 Be4 8.de4 Qe4 9.Be2 (better is 9.Kd2 Rd8 10.Kc1+–) 9...Nc2+= 10.Kf1 Na1 11.Ba1 Rd8 12.Qb3 e6 13.Nbd2 Qd5 14.Bc4 Qc5 15.g3 Bd6?? (better is 15...Nf6=) 16.Ne4 (16.Bg7 Qh5+–) 16...Qh5 (16...Qf5 17.Nd6 cd6 18.Bg7+–) 17.Nd6 (17.Bg7 Qg4 18.Nd6 cd6 19.Bh8 Rc8+–) 17...Rd6 (17...cd6 18.Bg7 Rc8+–) 18.Kg2 (better is 18.Bg7 Nf6 19.Bh8+–) 18...f6 (18...Nf6!? 19.Be5 Rd7+/–) 19.Be6+– Ne7 20.Re1 Qc5 (better is 20...Kd8+–) 21.Bc3 h5 (21...Rd3 22.Bc4 Rd6+–) 22.Bb4 Qb6 23.Bd6 Qd6 (23...cd6 24.Bf5 Qc7+–) 24.a4 (better is 24.Rd1 Kd8+–) 24...g5 (24...Qc5 25.Rd1 g5 26.Bd7 Kf8 27.Nd4 Qd5 28.Qd5 Nd5 29.Ne6 Ke7 30.Rd5+–) 25.Bc8 h4 26.h3 (26.Re6 Qc5 27.Bb7 hg3 28.Bc6 Kd8 29.fg3 Kc8+–) 26...hg3 27.fg3 Kd8 28.Bb7 Nf5 29.Rd1 g4 (29...Ne3 30.Qe3 Qd1+–) 30.Rd6 cd6 (30...Nd6 31.Nd4 gh3 32.Kh2+–) 31.hg4 Ne3 1–0. Fournier,Frederic (1980) – NN, jeu.europe–echecs.com, 2013. (=1.Nf3 d5 2.b4 d4 3.Bb2 Nc6 4.b5 Nb4)

6.d3 e6 7.a3 Nd5 8.e4 Bg4 9.ed5 Qd5 10.Nbd2 Bd6 (10...Qd4 11.Nd4 Bd1 12.Kd1 Nf6+–) 11.Bg7 f6 (11...Be5 12.Be5 Qe5 13.Ne5 Bd1 14.Kd1+–) 12.Bh8 0–0–0 (12...Bf3 13.Nf3 Qb5 14.Rb1 Qa5 15.Nd2+–) 13.Be2 Be5 (13...Qb5 14.Nc4+–) 14.c4 Qd6 15.Ne4 Qb6 16.Ne5 Be2 17.Ke2 fe5 18.Be5 Nh6 19.a4 Nf5 20.a5 Nd4 21.Kd2 Nb3 22.Qb3 Qf2 23.Nf2 1–0. Heini – chessenemy, internet, 2016.

6.d3 e6 7.c4 Bg4 8.Bc3 Nf6 (8...e5 9.Ne5 Be6 10.a3+–) 9.a3 Nfd5 (9...Bf3 10.ef3 (10.Bb4?! Bb4 11.ab4 Bh5+–; 10.ab4?! Bh5+–) 10...Nbd5 11.cd5 Nd5 12.Bd4+–) 10.cd5 Nd5 11.Qa4 (better 11.e3+–) 11...Nb6 (11...Nc3 12.Nc3 Bf3 13.gf3 Bc5+–) 12.Qg4 f5 (12...a6 13.ba6 Ra6 14.e4+–) 13.Qh5 g6 (13...Kd7 14.e4 Qe8 15.Ne5 Kd8 16.Be2 Qh5 17.Bh5+–) 14.Qh3 Rg8 (14...e5 15.Be5 Rg8 16.Qh7+–) 15.Qh7 Rg7 16.Bg7 Bg7 17.Qg7 Nd7 18.Qg6 Kf8 19.Ng5 Ne5 20.Qh6 Ke7 21.Qe6 Kf8 22.Qf5 Kg8 23.Qh7 Kf8 24.Qh8 Ke7 25.Qe5 Kd7 (25...Kf8 26.Qf5 Qf6 27.Qf6 Kg8 28.Qg6 Kh8 29.Nf7) 26.Qe6 1–0. GuestLTFJ – GuestJNGP, freechess.org, 2019.

6.d3 f6 7.a3 Nd5 8.e4 e5 9.Bb2 (9.ef5?! ed4 10.Nd4 Nf4+–; 9.ed5?! ed4 10.Nd4 Qd5 11.Nf5 Qf5+=) 9...Bc5 (9...Be6 10.ed5 Qd5 11.Nc3+–) 10.ef5 (worse 10.ed5 Qd5 11.Nc3 Qd7+–) 10...Qd7 (10...Qe7 11.Qe2+–) 11.d4 ed4 12.Qe2 (12.Bd4 Bd4 13.Nd4 Nf4+–) 12...Nge7 13.Nd4 (13.Bd4 Bd4 14.Nd4 0–0–0+–) 13...Bd4 14.Bd4 Qf5 (14...0–0–0 15.Qe6+– (worse 15.Ba7 Nf4 16.Qf3 Rhe8+–)) 15.Nc3 (15.g3 Qd7+–) 15...0–0–0 (15...Nc3 16.Bc3 0–0–0 17.Bd2+– (17.Qe7?! Qc2 18.Qe6 Kb8=)) 16.Nd5 (16.Ba7 Nc3 17.Qc4 Qe5 18.Be3 Nb5–/+) 16...Nd5 17.0–0–0 (17.Ba7 Rhe8 18.Be3 Qe5–/+) 17...Rhe8 18.Qf3 Qg5 (18...Qf3 19.gf3 h6 20.Rg1+–) 19.Kb1 Nb6 20.Be3 Rd1 21.Qd1 Qd5 22.Qd5 Nd5 23.Bd3 (23.Bd2 f5+–) 23...b6 (23...Ne3 24.Re1+–) 24.Bf5 Kb8 25.Kb2 (25.Bd4 g6 26.Bd7 Rd8+–) 25...g6 (25...Ne3 26.fe3 g6 27.Bd7 Re3 28.Rf1+–) 26.Bd3 (better 26.Bd7 Rd8 27.Bc6 Ne3 28.fe3 Rd6+–) 26...f5 (26...Ne3 27.fe3 Re3 28.Rd1+–) 27.Re1 (better 27.Bg5 Re5+–) 27...c5 (27...Kc8 28.c4 Ne3 29.fe3+–) 28.Bd2 (better 28.Bf4! Nf4 29.Re8 Kc7 30.Re7 Kc8 31.Rh7 Ng2 32.Ra7 Nf4+–) 28...Re1 29.Be1 Nf4 30.g3 (30.Bc4 Ng2 31.Bc3 Kc8+–) 30...Nd5 (30...Nd3 31.cd3 a6 32.ba6+–) 31.Bc3 (31.Bc4 Ne7+–) 31...Kc7 (31...Nc3 32.Kc3 Kc7 33.Bc4+–) 32.Be5 Kd7 33.Bc4 Ne7 34.f4 g5 (34...Nc8 35.Bg8 Ne7 36.Bh7+–) 35.a4 (better 35.fg5 Ng6 36.Bf6 Nf8+–) 35...gf4 36.gf4 Ng6 37.Bg8 (37.Bd3 Ne5 38.Bf5 Kd6 39.fe5 Ke5 40.Bh7 Kf4+–) 37...h5 (37...Ne5 38.fe5 Ke7 39.Kc3+–) 38.Bh7 (38.Bb8 Kc8 39.Bd6 Kd7+–) 38...Nh4 (38...Ne5 39.Bf5 Kd6 40.fe5 Ke5+–) 39.Kc3 Ke6 40.Kd3 Kd5 (40...Kf7+–) 41.Bg8 1–0. GuestQWHN – Josholith, freechess.org, 2017.

5.Bd4 Bg4

6.a3 Bf3 7.ab4 Qd4 8.c3 Be2 9.Be2 Qe4? (better 9...Qd7!?+–) 10.0–0+– 0–0–0?? (10...Qe5+–) 11.Bf3 Qf4 (11...Qc4 12.Ra7 Qb5 13.Na3+–) 12.Ra7 e6 (12...Kd7 13.g3 Qd6 14.Rb7+–) 13.Bb7 (13.Bc6 bc6 14.bc6 Qh2 15.Kh2 Bd6 16.g3 Bg3 17.Kh3 Kb8 18.Qa4 Rd2 19.Ra8) 13...Kd7+– 14.b6! Bd6 (14...cb6 15.Qa4 Decoy) 15.g3 Qg4 (15...Qf5 16.Na3 Ke7+–) 16.Qg4 (16.Qg4 Nf6 17.Qg7+–) 1–0. GuestPGSP – GuestZDCP, freechess.org, 2020.

6.Bb2 Qd5 7.Nc3 Qf5 8.e4 Bf3 9.ef5 (better 9.gf3 Qf4 10.a3 Nc2 11.Qc2+–) 9...Bd1 10.Kd1 (10.Rd1?! Nc2 11.Ke2 Nd4 12.Ke1 Nf5=+) 10...0–0–0? (10...Rd8 11.Bc4 Nf6 12.Re1+–) 11.a3 (better 11.Bc4!? Nf6 12.Bf7 Ng4 13.Be6 Kb8+–) 11...Nd5 12.Bc4 Nc3 13.Bc3 Nh6 14.Kc1 (14.Re1 Rg8+–) 14...Nf5 (14...Rg8 15.g4! g5 16.Re1+–) 15.Bf7 Nd4 16.a4 (16.Bc4 e5+–) 16...Ne2 (16...e5 17.Re1 Bd6 18.Bc4+–) 17.Kb2+– Nc3 18.Kc3 (18.Be6!? Kb8 19.Kc3 g6+–) 18...g6 19.Be6 Kb8 20.Kb3 (20.Rad1!?+–) 20...Rd2+= 21.Rad1 Bh6 (21...Rd6 22.Rhe1+=) 22.Rd2+– Bd2 23.Rd1 Rd8 24.c4 Rd6 25.Kc2 (25.c5 Re6 26.Rd2 Kc8+–) 25...Bb4 26.Rd6 cd6 27.Kd3 Kc7 28.Ke4 Kb6 29.Bg8 Kc5 (29...h6 30.f4+=) 30.Bh7+– Kc4 31.Bg6 Kb3 (31...d5 32.Kf3+–) 32.h4 (32.Be8 Bc5+–) 32...Ka4 33.Be8 b6 (33...Kb3!?+–) 34.g4 Be1 (34...e6 35.h5 Bd2 36.f4 d5 37.Ke5+–) 35.g5 Bf2 (35...Kb3+–) 36.g6 Bh4 37.g7 Bf6 (37...Bf2 38.g8Q Bc5 39.Kd3+–) 38.g8Q Kb4 (38...Ka3 39.Qc4 d5 40.Qd5+–) 39.Qd5 (better 39.Kd3 e6+–) 39...Ka5 (39...Kc3 40.Bf7 e6 41.Be6 Kc2 42.Qd3 Kb2 43.Qb3 Kc1 44.Kd3 a5 45.Qc2) 40.Qb3 (40.Qb3 d5 41.Kd5 e6 42.Kc4 Be7 43.Qa2 Ba3 44.Qa3) 1–0. tsodikovich (1790) – dracoargentum (1695), gameknot.com, 2017.

6.c3 Bf3 7.gf3 Nd5 8.c4 Nb4? 9.Bb2 f6 10.a3 e5 11.Nc3 Nh6 12.ab4 Bb4 13.Nd5 Bc5 14.Rg1 0–0 15.e3 c6 16.Nc3 Bb4 17.bc6 Bc3 18.Bc3 bc6 19.Qc2 f5 20.Be5 Qh4 21.Rg7 Kh8 22.Rg5 (22.Rg5 Rf6 23.Bf6) 1–0. mtr – taganka, internet, 2009.

6.c3 Bf3 7.gf3 Nd5 8.Bg2 c6 9.bc6+– bc6 10.Qa4 Qd6 (better is 10...Qd7+–) 11.Na3 e6 (11...Ngf6 12.Nc4 Qc7 13.f4+–) 12.Nc4 Qd7 (12...Qc7 13.Be5 Nb6 14.Nb6 (worse is 14.Bc7 Na4 15.0–0 Bc5+–) 14...Qb6 15.f4+–) 13.Ne5 Qc7 (13...Qc8 14.Nc6 Qd7 15.Qa6+–) 14.Nc6 Qd7 15.Qa6 (15.Ba7? Nge7 16.Qc4 Nc6–+ (16...Ra7 17.Na7 Qa7 18.Rb1+/–)) 15...Bd6 (15...f6 16.e4 Nc7+–) 16.Bg7 (16.Bg7 Nge7 17.Ne7 (worse is 17.Bh8 Nc6 18.e4 Nc7+–) 17...Ke7 18.Bh8 Rh8 19.Rb1+–) 1–0. pierred – anony, internet, 2014.

6.Bc3 Nd5 7.e3 Nc3 8.Nc3 (8.dc3?! Qd1 9.Kd1 Nf6=) 8...Nf6 9.h3 Bf3 (9...Bh5 10.Be2+–) 10.Qf3 Rb8 11.Qf4 (11.Bd3 g6+–) 11...e6+– 12.Qa4 a6? (better 12...Bc5+–) 13.ba6+– Nd7 14.a7 (14.ab7 Rb7 15.Bb5 Rb6+–) 14...Ra8 15.Rb1 b6?? (15...Qc8+–) 16.Bb5 Bc5 (16...Bd6 17.Bc6+–) 17.Bc6 1–0. Pierre – Melissa, internet, 2020.

6.Bc3 e6 7.e3 Nf6 8.Be2 a6 9.ba6 ba6 (9...Na6 10.0–0+=) 10.0–0 h5 (10...Be7 11.h3 Bh5 12.Bb4 Bb4 13.a3+–) 11.h3+– Nbd5 (better 11...Bf5 12.d3 Nc6+–) 12.hg4 hg4 13.Nh2 Bd6 (13...Ne4 14.Bg4 (14.Ng4?? Qh4 15.Nh6 Rh6–+) 14...Qg5 15.f4+–) 14.g3 Bg3 (14...Ne4 15.Ng4 f5 16.Bg7 Rh3+–) 15.fg3 Ne4 (15...Qd6 16.Rf2 Ne4 17.Rg2+–) 16.Be5 (16.Bg7 Rh3 17.Be5+– (17.Ng4 Rg3 18.Kh1 Qh4 19.Nh2 Rg7–+)) 16...Ng3 (16...Qg5 17.Ng4 f5+–) 17.Bg3 Qg5 (17...f5 18.Nc3+–) 18.Ng4 Rh3 19.Kg2 0–0–0 (19...Rg3 20.Kg3 f5+–) 20.Kh3 Rh8 21.Kg2 Nf6 22.Ba6 Kb8 23.Nf6 gf6 24.Nc3 e5 (24...Qg3 25.Kg3 Rg8 26.Kf2 c6 27.Qb1 Kc7 28.Qb7 Kd8 29.Qc8 Ke7 30.Qc7 Ke8 31.Qc6 Ke7 32.Qc5 Kd7 33.Bb5 Kd8 34.Qd6 Kc8 35.Ba6) 25.Qb1 (25.Qb1 Ka7 26.Qb7) 1–0. Faygan – Piuz, internet private, 2018.

6.Bc3 e6 7.e4 Bf3? (better 7...f5 8.ef5 Bf3 9.Qf3 Nc2 10.Kd1 Na1 11.fe6 Nf6 12.Qb7 Bd6+–) 8.gf3+– c6 (8...Qh4 9.a3 Nf6 10.Bb4 Ne4 11.Qe2+– (11.fe4?! Qe4 12.Qe2 Qh1+=)) 9.a3 Nc2 (9...Nd5 10.ed5 cd5 11.Rg1+–) 10.Qc2 cb5 (10...c5+–) 11.Bb5 Ke7 12.Bb4 Kf6 13.Qc3 e5 14.Bf8 (14.f4 g5 15.Qe5 Kg6 16.f5 Kh6 17.h4 Qd7 18.hg5 Kg5 19.Rg1 Kh6 20.Qh2) 14...Qf8 15.Rg1 (15.f4 Qd6 16.Rg1 Qd4 17.fe5 Qe5+–) 15...a6 (15...Rc8 16.Bc4 Qe7 17.f4+–) 16.Bc4 (16.f4 Qb8 17.Rg5 ab5 18.Rf5 Ke7 19.Qc5 Ke8 20.Re5 Qe5 21.Qe5 Kf8 22.Qb5 Rb8+–) 16...Ne7 (16...g6 17.f4 Kg7 18.Bd5+–) 17.d4 (better 17.f4!? Nc6 18.Bd5 Ke7 19.Bc6 bc6 20.Qe5 Kd7 21.Rg7 Qe7+–) 17...Nc6 18.de5 Ne5 (18...Ke7+–) 19.Nd2 (better 19.f4 Qd6 20.fe5 Qe5 21.Qf3 Ke7 22.Qf7 Kd8 23.Rg7 Qe4 24.Be2 Qh1 25.Kd2 Qc6 26.Qe7 Kc8+–) 19...Rc8 (19...Qc5 20.f4 g6 21.Nb3+–) 20.f4 b5 (20...Rc5 21.Nb3 g6+–) 21.Qe5 1–0. Abdullaevich (1850) – Genjorcar, lichess.org, 2020.

6.e3 Nd5 7.Bc4 (better 7.c4!? Nb6+–) 7...e6 8.0–0 f6 (8...Ngf6!?+–) 9.h3 Bh5 10.Nc3 c6 (10...Nge7 11.Qe2+–) 11.bc6 bc6 12.e4 (12.Rb1 Nge7 13.Ne4 Rb8+–) 12...Nc3 (12...Nb6 13.Bb6 ab6 14.Be6+–) 13.Bc3 Bc5 (13...Qd7 14.Rb1+–) 14.Be6 (14.d4 Bf3 15.Qf3 Bd4+–) 14...Qd6 15.Bc4 a5 (15...Ne7 16.Rb1 Qf4 17.d4+–) 16.e5 fe5 (16...Qc7 17.d4 Bb4 18.Qd3+–) 17.Be5 Qg6 18.d4 Ba7 (18...Bb4 19.g4 Bg4 20.hg4 Qg4 21.Bg3+–) 19.Re1 Ne7 20.c3 (20.g4 Bg4 21.hg4 Qg4 22.Bg3 Bb8+–) 20...Bb8 (20...Rf8 21.Bd3 Qh6 22.Be4+–) 21.Bb8 Rb8 22.Re6 Qf5 (22...Qf7 23.g4 0–0 24.Qe2+–) 23.Qe1 Rb7 (23...Bf3 24.Re7 Kd8 25.Be6+–) 24.Re5 Qg6 (24...Qf6 25.Rh5 Kd7 26.Ng5+–) 25.Ng5 Kd7 (25...Rf8 26.Ra5 Rb8+–) 26.Re7 (26.Re7 Kd8 27.Rb7 Be2 28.Qe2 Qf6 29.Ne6 Ke8 30.Nf8 Kd8 31.Rd7 Kc8 32.Qe8 Qd8 33.Qd8) 1–0. GuestLZLP – GuestVRTB, freechess.org, 2020.

6.e3 Bf3 7.gf3 e5 8.Be5+– Nf6 (8...Qe7 9.d4+–) 9.c4 (better 9.Nc3+–) 9...Bd6? (better 9...a6+–) 10.Bb2 (10.Bc3 a6 11.a3 ab5 12.ab4 Ra1 13.Ba1 Bb4+–) 10...Qe7 (10...Be7 11.d4+–) 11.a3 Be5 (11...0–0 12.ab4 Bb4 13.Qc2+–) 12.d4 (12.Be5 Qe5 13.d4+– (13.ab4?! Qa1 14.Nc3 Qb2=)) 12...0–0–0 (12...Bd6+–) 13.ab4 Bd4 (13...Bf4 14.Ra7 Kd7 15.Qa4+–) 14.Bd4 Qb4 15.Qd2 (better 15.Nc3 b6 16.Ra7+–) 15...Qe7 (15...Qd2 16.Nd2 Rd4 17.ed4 Rd8+–) 16.Ra7 (better 16.Bh3 Qe6 17.Be6 fe6 18.Ra7 b6+–) 16...Kb8 17.Be2 (better 17.Qa5 Kc8 18.Bh3 Qe6 19.Be6 fe6 20.Bf6 gf6+–) 17...b6 (17...Rhe8+–) 18.Qa2 Kc8 19.Nc3 (19.Qa6 Kd7 20.Rc7 Kc7 21.Qa7 Kc8 22.Qe7 Nd7+–) 19...Rd6 (19...Qe6+–) 20.Ra8 Kd7 21.Rh8 (21.Rh8 Ne8 22.c5 bc5 23.Ne4 Rd4 24.ed4+–) 1–0. GuestTCKV – trus, freechess.org, 2017.

6.Ne5?? Qd4–+ 7.Nf7 Kf7 (7...Qb2 8.Nh8 Nc2 9.Qc2 Qc2 10.Nc3–+) 8.c3 Nd3! 9.ed3 Qe5 10.Be2 Nf6 (better 10...Be2!? 11.Qe2 Qb5 12.Qd1–+) 11.f3 (11.d4 Qe6–/+) 11...Bf5–+ 12.Qb3 Nd5 13.d4 Qe6 14.Kf2 Kf6 (14...Qd7 15.Re1–+) 15.Bc4–/+ c6 16.Na3 (16.Re1 Qd6–/+) 16...a5 (16...Qd6 17.Nc2–/+) 17.Rhe1 (17.ba6 ba6 18.Nc2 Qd6–/+) 17...Qd6–+ 18.Re5 a4 19.Rf5? (better 19.Qb2–+) 19...Kf5 20.Qc2 Ke6 (20...Kf6!? 21.Qe4–+) 21.Re1 Kd7 22.bc6 bc6 23.Qf5 (23.Bd5 cd5 (23...Qd5?! 24.d3–+; 23...Qa3 24.Qf5 Kd8 25.Bc6+–) 24.Nb5 Qg6–+ (24...Qh2 25.Qf5 Ke8 26.Re5 Qh4 27.Ke2+=)) 23...Kc7 (23...e6!? 24.Qf7 Qe7 25.Qe7 Be7 26.Nb1–+) 24.Nc2 (24.Re6 Qd7 (24...Qa3?! 25.Rc6 Kc6 26.Qd5 Kc7 27.Qa8=) 25.Rc6 Qc6 26.Qe5 Kd8 27.Bd5 Qc8 28.Ba8 Qa8–/+) 24...g6 25.Qg5 (25.Qf7 Rd8–+ (25...Qh2?! 26.Bd5 cd5 27.Qd5–/+)) 25...h6 (worse 25...Qh2 26.Bd5 cd5 27.Qd5–/+) 26.Qh4 g5 27.Qe4 Qh2 (better 27...Rb8!? 28.Kg1–+) 28.Bd5 cd5 29.Qd5 Qh4?? (better 29...Ra6–+) 30.Kf1?? (30.Kg1 Qe1 31.Ne1 Bg7+–) 30...Rd8?? (30...Qh1 31.Kf2 Qh4 32.Kg1 Qe1 33.Ne1 Bg7+–) 31.Qe5 Kc8 32.Qh8 Qh1 33.Kf2 Qh4 34.Ke2 (34.Kg1 g4 35.fg4 Qg4+–) 34...Kd7 (34...Qg3 35.Ne3 e6 36.Qh7+–) 35.Qe5 e6 (35...Ke8+–) 36.Kd3 Qf2 (36...Bd6 37.Qe6 Kc7 38.Qc4 Kd7 39.Qb5 Kc7 40.Qa5 Kd7 41.Qa7 Kc8 42.Qb6 Qe1 43.Ne1+–) 37.Qe6 Kc7 38.Re2 (better 38.Qc4 Kd7 39.Rb1+–) 38...Rd6 (38...Qf1+–) 39.Qd6! Kd6 (39...Kd6 40.Rf2 Zwischenzug; 39...Bd6 40.Rf2 Zwischenzug) 40.Rf2 Kd5 (40...Kd7 41.f4 gf4 42.Rf4+–) 41.Re2 Bd6 (41...Kc6 42.Re6 Kd7 43.Ra6+–) 42.Re8 (42.c4 Kc6+–) 42...Bf4 (42...Kc6 43.Rh8+–) 43.Ne3 Kc6 44.Re6 Kb5 45.Rh6 (45.Nc2 Bc7 46.c4 Ka5 47.a3 Bg3 48.Nb4 Bd6 49.Rd6 h5 50.Ra6) 45...g4 46.Rh5 Kb6 47.Ng4 1–0. GuestNCHN – sirbastl, freechess.org, 2017.

5.Nd4 e5

6.Nb3 Bd6 7.e4 a5? 8.a3+– a4 (8...Qh4 9.ab4 Qe4 10.Be2+–) 9.ab4 ab3 (9...Nf6 10.Nc5 Bc5 11.bc5 Ne4+–) 10.Ra8 bc2 11.Qc2 Bb4 (11...Ne7 12.Be2+–) 12.Qc4 (better 12.Be5 Ne7+–) 12...Bd6 13.Be2 (13.d4!? f6+–) 13...Nf6 14.g4! 0–0 (14...Bg4 15.Rd8 Pinning (15.Rd8 Deflection); 14...Ng4 15.Bg4 Combination) 15.g5 (better 15.Nc3!? Qe7+–) 15...Nd7 16.h4 (16.Qd3!? Qg5 17.Qg3 Qh6+–) 16...Nb6 17.Qa2 (17.Rc8 Qc8 18.Qb3 Qd8+–) 17...Na8 18.Qa8 Qe7 19.Qa1 b6 20.Nc3 Bb7 21.Qa7 Bc8 (21...Ba8 22.Bc4+–) 22.Nd5 Qd7 23.Rf1 (23.Ba3 Rd8 24.Bd6 Qd6 25.Qc7 Qc7 26.Nc7 Bb7+–) 23...f5 (23...Qh3 24.h5+– (24.Nc7?! Qb3 25.Qa1 Bc7+–)) 24.ef5 (better 24.gf6 gf6 25.Ba3+–) 24...Qf5 25.d3 (25.Nc3!? Be6+–) 25...e4 26.Ne3 (26.Nc7 ed3 27.Qa2 Kh8 28.Bg7 Kg7 29.Qa1 Kf7 30.Qa2 Ke7 31.Nd5 Kd8 32.Bd3 Qd3–+) 26...Qb5 27.Qa2 Kh8 28.de4 Bb4 (28...Qb4 29.Kd1 Bf4 30.Bc1 Rd8 31.Bd2+–) 29.Kd1 Qc5 (29...Rd8 30.Nd5 Qc5 31.Bd3 Bg4 32.f3+–) 30.Qc4 Qc4 31.Nc4 1–0. beatmeeasy (1945) – saeed1717 (1875), lichess.org, 2021.

6.Nb3 Bd6 7.e4 (7.c4!? Bf5 8.d3+–) 7...c6? (better is 7...Qh4!? 8.d3 Qg5+/–) 8.a3 1–0. Fredek (2065) – Guest1311956, Freundschaftspartie, 5m + 0s, 2006.

6.Nb3 e4 7.d3 Nf6 8.a3 +/–.

6.Nb3 Bf5 7.d3 Nd5 8.e4 Bb4 (8...Nh6 9.ed5 Qd5 10.Nc3+–) 9.c3 Bd6 (9...Nc3 10.Nc3 Be6 11.a3+–) 10.ed5 (10.ef5 Nh6+–) 10...Qg5 (10...Nf6 11.c4+–) 11.h4 Qe7 Black intends e4 12.Be2 e4 (12...Nf6 13.c4+–) 13.Nd4 Bg6 14.de4 Qe4 (14...Be4 15.c4+–) 15.Nf3 (15.h5!? Bf5 16.0–0 Ne7+–) 15...h6 (15...Nf6 16.c4+–) 16.c4 Bc5 (16...Nf6 17.Nc3 Qf5 18.Nd4+–) 17.Nc3 (17.Bg7 Rh7 18.Nc3 Qe7+–) 17...Bb4 (17...Qc2 18.Qc2 Bc2 19.Kd2+–) 18.0–0 (better 18.Qa4 Bc3 19.Bc3 Ne7+–) 18...Qg4 (18...Qc2 19.Qc2 Bc2 20.Rfe1+–) 19.Re1 (19.Ne5 Qf4 20.Qa4 Qe5 21.b6 Kd8 22.bc7 Qc7 23.Qb4 Nf6+–) 19...Nf6 (19...Ne7 20.h5! Qh5 21.Qa4+–) 20.Bd3 (better 20.Ne5 Qh4 21.g3 Qg5+–) 20...Be4 (20...Kf8+–) 21.Be4 (better 21.Ne4 0–0–0 22.Qa4 Be1 23.Re1 Kb8+–) 21...0–0 22.Qc2 (22.Qd3 Ne4 23.Re4 Qf5+–) 22...Ne4 (22...Rfe8 23.Bd3+–) 23.Re4 Qf5 24.Rae1 c5 (24...Rae8 25.R1e2 Qd7 26.Na4 Re4 27.Qe4+–) 25.bc6 bc6 26.dc6 (26.Nd4 Qh7 27.Nc6 a5+–) 26...Ba5 27.R1e2 (better 27.Nd5 Kh8 28.Nd4 Qh7+–) 27...Bc7 28.Nd5 Bd6 29.c7 (better 29.Qd3 Kh8 30.c5 Bc5+–) 29...Rac8 30.Be5 Bc5 31.Qc3 f6 32.Bd4 Bd6 33.c5 (better 33.Re6 Rc7 34.Rd6 Rb7 35.Ne7 Re7 36.Re7 Qg6+–) 33...Bc7 34.Ne7 (34.Ne7 Kh7 35.Nf5+–) 1–0. retiponziani (1960) – SloRydr, ChessWorld.net, 2020.

6.Nb3 Bf5 7.d3 e4 8.a3 ed3 9.ab4 Bb4 10.c3 (Black forfeits on time 1–0). Machete99 – bluecat, ICC, 2002.

6.Nf3 Bd6 7.e4+– Nf6? (better is 7...f5+–) 8.a3 (8.Ne5?! Ne4 9.Na3 Qe7=; worse is 8.Be5 Be5 9.c3 Qe7+=) 8...Nbd5 9.ed5 e4 10.Nd4 Be5 11.c4 Nd5 (11...0–0+–) 12.cd5 Qd5 13.Qc2 (better is 13.Qh5 Qd6 14.Qe2+–) 13...Bd4 14.Bd4 (14.Bc4 Qe5 15.Bd4 Qd4+–) 14...Qd4 15.Nc3 (15.Qc3!? Qc3 16.Nc3 Bf5+–) 15...Bf5 16.Be2 0–0–0 17.Rd1 g6 (17...Kb8 18.0–0+–) 18.0–0 (18.g4 Be6 19.Ne4 Rhe8+–) 18...e3? (18...Rhe8+–) 19.de3 Bc2 20.Rd4 (20.ed4?! Bd1 21.Rd1 Rhe8+–) 20...Rd4 21.ed4 f5 22.d5 Bb3 23.Bf3 Rd8 24.g3 c6 25.bc6 bc6 26.Rc1 cd5 27.Nd5 Kb8 28.Nb4 Rd2 29.Na6 1–0. Fournier,Frederic – plplp, Partie amicale, 3m + 1s, 2008.

6.Nf3 Bd6 7.Be5?! Be5 8.Ne5 Qd4 +=.

6.Nf3 Bd6 7.Ne5 Be5 8.Be5 f6 9.Bc3 Nd5 10.e4 Nc3 11.Nc3 Be6 12.d4 Ne7 13.d5 Bd7 14.Qd4 0–0 15.Be2 c6 (15...Ng6 16.0–0+–) 16.bc6 bc6 17.d6 Ng6 18.Rb1 Nf4 19.Bc4 Kh8 20.0–0 f5 (20...Qa5 21.Qe3+–) 21.Rb7 (21.e5 Qh4 22.Kh1 Qg4+–) 21...Qg5 22.g3 Be6 (22...Nh3 23.Kg2 Bc8 24.Ra7 (24.Kh3?! fe4 25.Kg2 Bb7=) 24...Ra7 25.Qa7 (25.Kh3?! c5 26.Qd1 fe4 27.Kg2 Bg4=) 25...fe4 26.Qe7+–) 23.e5 Nh3 24.Kh1 Bd5 (24...c5 25.Qc5 Bc4 26.Qc4+–) 25.Nd5 cd5 26.f4 Qh5 (26...Qh6 27.Bd5 Qh5 28.e6+–) 27.Qd5 h6 (27...Rfc8 28.d7 Rf8 29.e6+–) 28.e6 Rf6 (28...a6+–) 29.d7 Rd8 30.e7 1–0. Janek – Larry, internet free game, 2017.

6.Nf3 e4 7.Nd4 Bc5 8.Nb3 Bf8 9.e3 Be6 10.Be2 Bb3 11.ab3+/– Nf6 12.0–0 Bd6 13.c3 Nd3 14.Qc2 Nc5 15.b4 Ne6 16.c4 Bb4 17.Nc3 0–0 18.Ne4 Ne4 19.Bg7?? Ng7 20.Qe4=+ Qd2 21.Qg4? Rae8 22.Rfd1=+ Qc3 23.Rac1 Qe5–/+ 24.Bd3 Re6 25.f4?? Qe3–+ 26.Kh1 Bd2 27.Bh7 Kh8 28.Rc2 Rd8 29.Bf5?? Qe1! (29...Qe1 30.Re1 Re1) 0–1. gtate (1765) – dgall, net–chess.com, 2002.

6.Nf3 e4 7.Nd4 f6 8.e3 Ne7 9.a3 Nbd5 10.c4 Nb6 11.a4 Ng6? (better is 11...c5 12.bc6 Nc6+–) 12.a5+– Nd7 (12...c5 13.bc6 bc6+–) 13.Be2 (better is 13.Ne6 Qe7 14.Nc7 Kf7 15.Na8+–) 13...Be7?? (better is 13...Nc5+/–) 14.Ne6+– (14...Kf7 15.Nd8 Rd8 16.Nc3+–) 1–0. MammaMia – bigpopae115, Live Game Caissa's Web, 2004.

6.Nf3 Be6 7.a3 Nd5 (7...e4 8.Nd4 Nd5 9.Ne6 fe6 10.c4+/–) 8.Ne5 Bd6 (8...Ndf6 9.e3+–) 9.Nc4 (better is 9.e4 Ndf6 10.Nc4+–) 9...Nf4?? (better is 9...Ngf6+–) 10.Nd6 Qd6 11.Bg7 f6 12.Bh8 Qe5 13.Nc3 0–0–0 14.g3 Nh3 15.Bg2 Nf2 16.Kf2 Qg5 17.e3 Bd5 18.Nd5 Rd5 19.Bd5 Qd5 20.Qg4 f5 21.Qd4 (21...Qb5 22.Qa7+–) 1–0. Fredek (2065) – Guest, Freundschaftspartie, 5m + 0s, 2006.

6.Nf3 Bf5 7.d3 f6? 8.c4 (better 8.a3+–) 8...e4+– 9.Nd4 ed3 10.ed3 Nd3? (better 10...Qe7 11.Kd2 Qe5+–) 11.Bd3+– Bd3 (11...Qe7 12.Be2 0–0–0 13.0–0+– (13.Nf5 Rd1 14.Kd1 Qd7 15.Nd4 Bc5–/+)) 12.Qd3 Qe7 13.Qe2 Qe2 14.Ne2 Bb4 15.Nbc3 0–0–0 16.0–0 (16.a3 Bc3 17.Bc3 Nh6+–) 16...Rd2 17.Bc1 (17.Rab1 Ne7+–) 17...Rc2 18.Nd5 Rc4 19.Bf4 Nh6 (19...c6 20.Nb4 Rb4 21.bc6 bc6+–) 20.Bh6 (20.Rac1!? Rc1 21.Rc1 Ba5 22.Bc7 Bc7 23.Rc7 Kb8 24.Rg7 Nf5+–) 20...gh6 21.Nf6 (21.Rfc1 Rc1 22.Rc1 Ba5 23.Nf6 Rd8+–) 21...a6 22.ba6 ba6 23.Ng3 Be7 (23...Rd8 24.Nge4+– (24.Nh7?! Rf4+–)) 24.Nfe4 Bh4 25.Rac1 Rc1 26.Rc1 Bg3 27.hg3 h5 (27...Rd8 28.f4+–) 28.Rc6 (28.Nc5 a5+–) 28...Kb7 (28...Re8 29.f3 Kb7 30.Rc5+–) 29.Rh6 Re8 30.f3 (30.Nc5 Kc8+–) 30...Rd8 (30...Re5 31.Kf2+–) 31.Rh5 (31.Nc5 Ka7+–) 31...Rd1 32.Kh2 Ra1 33.Rh7 Ra2 34.Nd6 (34.g4 Rc2+–) 34...Kc6 (34...Kb6 35.Nc4 Kc6+–) 35.Ne4 a5?? (35...Kb7 36.g4 Rc2+–) 36.Rh6 (better 36.g4 a4 37.g5+–) 36...Kb5 (36...Kb7 37.Nc5 Kb8 38.Ra6+–) 37.Rh5 (better 37.Nc3 Kc4 38.Na2+–) 37...Kb4 38.Rh4 Kb3 (38...a4 39.f4 Kc4 40.f5+–) 39.Nc5 Kc2 (39...Kc3 40.Re4+–) 40.Kh3 (40.Rc4 Kd2+–) 40...Kd2 (40...Kc3 41.g4 Re2 42.Ne4 Re4 43.fe4+–) 41.Rd4 (41.Rc4 Ke2+–) 41...Ke3 (41...Kc3 42.Rd7 a4 43.g4+–) 42.Re4 Kf2 (42...Kd2 43.g4 Rb2 44.Re5+–) 43.g4 (43.Nd3 Kf1 44.Re1) 43...Kg1 (43...Ra1 44.g5 Rh1 45.Kg4 Kg2+–) 44.g5 (44.Re1 Kf2 45.Nd3) 44...Rg2 45.Rg4 Rg4 46.Kg4 a4 47.Na4 c5 48.Nc5 Kf2 49.g6 Ke3 50.g7 Kd4 51.Ne4 Ke3 (51...Kd5 52.g8Q Kc6 53.Qc8 Kb5 54.Qc5 Ka4 55.Qc4 Ka5 56.Nc3 Kb6 57.Nd5 Ka5 58.Qc5 Ka4 59.Qb4) 52.g8Q Kd4 (52...Kd3 53.Qc8 Kd4 54.Qc5 Kd3 55.Qc3 Ke2 56.Qd2 Kf1 57.Qf2) 53.Qg5 (53.Qg5 Kc4 54.Qc5 Kb3 55.Qc3 Ka4 56.Qc4 Ka5 57.Nc3 Kb6 58.Nd5 Ka5 59.Qc5 Ka4 60.Qb4; 53.Qc8 Kd5 54.Kf5 Kd4 55.Qc3 Kd5 56.Qc5) 1–0. GuestMVGJ – salta, freechess.org, 2018.

6.Nf3 f6 7.a3 Nd5 8.e4 Nf4 9.g3 Ne6 10.Bg2 Bc5 11.0–0 Ne7 12.c4 0–0 13.Nc3 c6 14.a4 Bb4 15.Qb3 c5 16.Na2 b6? Attacks the backward pawn on d2 (better is 16...Ba5+=) 17.Nb4+– cb4 18.Qb4 Bb7 19.d4! Be4 (19...ed4 20.Nd4; 19...Nd4 20.Nd4 Decoy) 20.d5 (better is 20.Rfe1!? a5 21.Qa3 Bf3 22.Bf3+–) 20...Nc5+/– 21.Nd2 Bg6 (21...a5 22.Qa3 Bg2 23.Kg2+=) 22.Nb3 Rc8 (22...Nd3 23.Qc3 Nb2 24.Qb2+/–) 23.Nc5+– (23.Nc5 Rc5 24.Qb3+–) 1–0. Fournier,Frederic (2025) – MikelArriaga (1965), Ajedrez21 ajedrez21.com, 2004.

4.b5 Nb8

5.Bd4 b6 6.e4 Bb7 7.d3 c5 8.Bb2 a5 9.Nbd2 f6 10.e5 Bf3 (10...a4 11.Nc4+–) 11.Qf3 (11.gf3?! e6+–) 11...Ra7 12.e6 Qd6 13.Qe4 g6 14.d4 Bh6 (14...Qc7 15.dc5 Qc5 16.Bd4+–) 15.Nc4 Qf4 16.Qf4 Bf4 17.dc5 bc5 18.b6 Rb7 (18...Ra6 19.Rb1+–) 19.g3 Bd6 (19...Bc7 20.bc7 Rc7 21.Na5+–) 20.Bg2 (20.Nd6?! ed6 21.Bc3 Nc6+–) 20...Be5 (20...Rb6 21.Nb6 Nh6 22.Nc4+–) 21.Bb7 Bb2 22.Nb2 Nh6 23.Rd1 0–0 24.Rd5 Nf5 25.Rc5 Nd6 26.Bg2 f5 27.Ra5 Nc6 (27...Kg7 28.c4+–) 28.Bc6 f4 29.Ra8 Ra8 30.Ba8 fg3 31.hg3 Kg7 32.Nc4! Nc4 33.b7 h5 34.b8Q Kh6 1–0. michaelbuss – karlsdad, ChessWorld.net, 2014.

5.Bd4 c6 6.a4 Nf6 7.e3 Bg4 8.Be2 Bf3 (8...e6 9.Nc3+–) 9.Bf3 e6 10.0–0 (10.a5 a6 11.bc6 Nc6+–) 10...Bd6+– 11.c4 (better 11.d3+–) 11...c5? (better 11...e5 12.Bc3 e4+–) 12.Bb7+– Nbd7? (12...Bh2 13.Kh1 cd4 14.Ba8 Bc7+–) 13.Ba8 Qa8 (13...cd4 14.Bc6+–) 14.Bf6 gf6 (14...Nf6 15.Nc3+–) 15.Nc3 Bh2 (15...Rg8 16.f3 f5+–) 16.Kh2 Rg8 17.e4 Qb8 18.f4 f5 (18...Qd6 19.a5+–) 19.ef5 ef5 20.Qe2 Kf8 21.Rae1 Qd8 22.Qd3 Nf6 (22...Rg6+–) 23.Qd8 (23.Qd8 Kg7 24.Qe7+–) 1–0. DEFFM – GuestXNMG, freechess.org, 2018.

5.Bd4 c6 6.bc6 Nc6 7.Bb2 Bg4 8.e3 e6 9.h3 Bf3 10.Qf3 Rc8 11.Bb5 Bd6?? (better is 11...a6 12.Ba4 b5+/–) 12.Bg7+– f6 (12...a6 13.Bc6 Rc6 14.Bh8 Rc2 15.Nc3+–) 13.Bh8 Nh6 (13...Qe7 14.Nc3 a6 15.Bc6 Rc6 16.Ne4+–) 14.Bf6 (14.Bf6 Be7 15.Qh5 Nf7 16.Be7 Qe7 17.Qh7+–) 1–0. Fournier,Frederic (1780) – Dickinson666, Active, 2006.

5.Bd4 Bd7 6.e3 e6 7.Be2 Nf6 8.a4 Be7 9.c4 0–0 10.0–0 Bd6 (10...c5 11.Bb2+–) 11.c5 Be7 12.Nc3 c6 (12...Be8 13.Ne5+–) 13.Qc2 cb5 (13...Bc8 14.Ne4+–) 14.ab5 (14.Bb5?! Nc6+–; 14.Nb5?! Nc6+–) 14...Qc8 15.Ng5 h6 (15...g6+–) 16.Bf6 hg5 17.Be7 Re8 18.Bd6 e5 (18...g4 19.Na4 Nc6 20.bc6 Bc6 21.Bg4+–) 19.Nd5 Be6 (19...Bg4 20.Bg4 Qg4 21.Nc7+–) 20.Nb6! ab6 21.Ra8 Qd7 22.Rb8 Rb8 23.Bb8 bc5 24.Qc5 1–0. GuestMPBP – GuestFTCQ, freechess.org, 2019.

5.Bd4 f6 6.e3 e5 7.Bb2 Qd5 8.c4 Qe6 9.Be2 c6 (9...a6 10.Nc3+–) 10.Nc3 Bb4 11.bc6 Nc6 12.Nd5 Ba5 13.0–0 Nge7 14.Qb3 e4 (14...0–0 15.Ne7 Ne7 16.c5+–) 15.Nd4+– Nd4 16.ed4 (16.Bd4!? Nc6+–) 16...Bd2?? (better 16...Nd5 17.cd5 Qb6+–) 17.Nc7+– (17.Nc7 Kf7 18.Ne6 Be6 19.d5+–) 1–0. GuestZSBG – GuestWXVH, freechess.org, 2017.

5.Bd4 f6 6.e3 e5 7.Ne5 fe5 8.Qh5 Kd7 9.Qf5 Ke8 10.Qe5 Ne7 (10...Qe7 11.Bc4 Nf6 12.Qe7 Be7 13.e4=) 11.Qh5+= Kd7 12.Bc4 c6 13.Nc3 a6?? (better 13...cb5 14.Nb5 a6+–) 14.b6 (better 14.Na4 cb5 15.Bb6 ba4 16.Bd8 Kd8 17.Qa5 Ke8 18.Qa4 Nbc6 19.0–0+–) 14...g6?? (14...c5 15.Bc5 g5+–) 15.Qe5 Rg8 (15...c5 16.Qh8 Nec6+–) 16.Bf7 Rg7 (16...Qb6 17.Bb6 Bg7 18.Qe6) 17.Qe6 1–0. DEFFM – GuestSJFW, freechess.org, 2018.

5.Bd4 f6 6.e3 Bg4 7.h3 Bf3 (7...Bh5!?+–) 8.Qf3+– (8.gf3?! e5 9.Bc3 Nd7+–) 8...Nd7 (8...c6 9.Bd3+–) 9.Bc3 (9.Qb7 a6+–) 9...e5 (9...Qc8 10.Bd3+–) 10.Bc4 (10.Qb7 Bd6+–) 10...Ne7 (10...Rb8 11.0–0+–) 11.Qb7 Nc5 (11...Nb6 12.Bb3+–) 12.Qf3 h5 (12...Nd7 13.d4 ed4 14.Bd4+–) 13.d4 e4 14.Qf4 Ng6 (14...Nb7 15.Qe4 Nd6+–) 15.Qg3 Bd6 (15...Rh6 16.dc5 Bc5+–) 16.Qg6 Kd7 17.dc5 Bc5 18.Qe4 Re8 19.Qf5 Kd6 20.Qd5 (20.Qd5 Ke7 21.Qe6 Kf8 22.Qf7) 1–0. DEFFM – Abidah, freechess.org, 2018.

5.Bd4 Bg4 6.e3 Qd5 7.Be2 Nd7 8.Bb2 (8.Nc3 Qd6 9.Ne4 Qd5+/–) 8...Nc5 (8...Bf3!? 9.gf3 Ngf6+/–) 9.Nc3 Qh5 10.0–0 0–0–0 11.Nd4 Be2 12.Qe2 Qe2 13.Nce2 e5 14.Nb3 (better is 14.Nf3!? e4 15.Ne5+/–) 14...Nb3= 15.ab3 Rd2 16.Rfe1 (16.Ng3 f6+=) 16...f6 (worse is 16...Rc2 17.Be5 f6 18.Nd4+/–) 17.Ra7 b6?? (better is 17...Bc5 18.Ra8 Kd7=) 18.Ra8+– Kd7 19.Rf8 Rc2 20.Ba3 Ra2 21.Rd1 Ke6 22.Re8 Kf7+/– 23.Rf8 Ke6 24.Bb4 Re2 25.Kf1 Rb2+= 26.Rdd8 Rb3 27.Rfe8 Kf7= 28.Rf8 Kg6 29.Be1 Rb5 30.Rg8 Rg8 31.Rg8 Kf7 32.Rc8 c5 33.Rc7 Kg6 34.h4 Rb1 35.g3 h6 36.Ke2 b5 37.Rc5+– b4 38.Rb5 b3 39.Kd2 Rb2 40.Kc3 (40.Kc3 Re2 41.Bd2 Rf2 42.Rb3+/–) 1–0. Fournier,Frederic – GALILEI, ICC, 2005.

5.Bd4 Bg4 6.e3 e6 7.h3 Bf5 8.g4 Be4 9.Nc3+– Nf6? 10.Bf6 Bf3 11.Qf3 gf6 12.Qb7 Nd7 13.Bg2 Nb6 14.Qc6 Ke7 15.Qc5 Ke8 16.Bc6 Nd7 17.Qd4 Rb8 18.Ne4 Bg7 19.Nc5 Ke7 20.Nd7 e5 21.Qb4 Ke6 22.f4 f5 23.gf5 Kf5 24.Qe4 Ke6 25.f5 Kd6 26.Qb4 1–0. wiking – paulogaspar, internet, 2009.

5.Bd4 Bg4 6.e3 Bf3 7.Qf3+– (7.gf3?! e6+–) 7...Nf6? (better 7...c6+–) 8.Qb7 Nbd7 9.Qc6 e6 10.e4 (10.Be2 Bd6+–) 10...Be7 11.Be2 (11.Nc3 Bb4+–) 11...0–0 12.0–0 e5 (12...Bd6 13.Rd1+–) 13.Bb2 Nb6 (13...Rb8 14.d4 Rb6 15.Qc4 ed4 16.Bd4+–) 14.Be5 Bd6 15.d4 Be5 16.de5 Qd7 (16...Nfd7 17.Qc3 Qe7+–) 17.ef6 Qc6 18.bc6 g6 19.Nc3 1–0. DEFFM – GuestTKNK, freechess.org, 2017.

5.Bd4 Bg4 6.e3 Nf6 7.Be2 e6 8.c4 Bf3 9.Bf3+– c6 10.Nc3 Qd7 11.0–0 Be7 12.a4 c5 13.Be5 a6 14.d4 cd4 15.ed4 ab5 16.ab5 Ra1 17.Qa1 0–0 18.Qa7 Bb4 19.Ne2 Qc8 20.Bb8 Qb8 21.Qb7 Qd6 22.Ra1 g5 23.Ra6 Qb8 24.Ra8 Qb7 25.Bb7 Ra8 26.Ba8 Nd7 27.Bc6 Nb6 28.c5 Nd5 29.b6 Nb6 30.cb6 Ba5 31.b7 Bc7 32.Nc3 Bb8 33.Ne4 h6 34.h3 Kg7 35.Kf1 f5 36.Nc5 Kf6 37.Bd7 e5 38.d5 h5 39.Be6 h4 40.Nd7 (40.Nd7 Ke7 41.Nb8 Kf6 42.Nd7 Kg6 43.b8Q g4 44.Qg8 Kh6 45.Bf7 gh3 46.Qg6) 1–0. alaamattar (2145) – mpopp (1905), net–chess.com, 2010.

5.Bd4 Bg4 6.g3?? Bf3–+ (6...Bf3 7.ef3 Qd4–+) 0–1. Jokmin,Alex – Gubo,Jozef, RN–2009–0–00250, 2010.

5.Bd4 h6 6.e3 Bg4 (6...Nf6 7.Nc3+–) 7.Be2 (7.Bd3 Nd7 8.h3 Bf3 9.Qf3 e5+–) 7...Bf3 (7...Nf6!?+–) 8.Bf3+– c6 9.0–0 (9.Nc3 a6 10.a4 e6+–) 9...e6 (9...Qc7 10.a4+–) 10.c4 Nd7 (better 10...Nf6+–) 11.bc6 bc6 12.Bc6 Rc8 13.Qa4 Be7 (13...Ngf6 14.Bb5+– (14.Ba7?! Qc7 15.Bd7 Nd7+–)) 14.Bg7 Rh7 15.Bd4 Bf6 (15...Qc7 16.Bb5 Bf6 17.Bc3+–) 16.Bc3 Bc3 (16...Qc7 17.Bb5+–) 17.Nc3 (worse 17.dc3 Qc7 18.Bd7 Qd7 19.Qd7 Kd7+–) 17...Ngf6 (17...Qc7 18.Bd7 Qd7 19.Nb5+–) 18.d4 Rc7 (18...Qc7 19.d5+–) 19.d5 (19.Bf3 Rc8+–) 19...ed5 20.Nd5 Nd5 21.cd5 (worse 21.Bd5 Rg7+–) 21...Kf8 (21...Rg7 22.d6 Rc8 23.Rfc1+–) 22.d6 Nb6 (22...Rc6 23.Qc6 Rg7+–) 23.dc7 Qc7 24.Qe4 Rg7 (24...Kg8+–) 25.Qe8 1–0. DEFFM – sureshGGG, freechess.org, 2018.

5.Nd4 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 e5 9.Nf3 Qd5? (9...e4 10.Ne5+=) 10.e3 (10.Be5!? Qb5 11.Bc7 Nd7+–) 10...e4 11.Nd4 g6? (better 11...Nf6+–) 12.c4 (better 12.Nc6 Nc6 13.Bh8+– (13.bc6?! f6+–)) 12...Qc5?? (12...Qd6 13.Nc6 f6 14.Nb8+–) 13.Nc3 (13.Nb3 Qg5 14.Bh8 Nd7+–) 13...Bf5?? (13...Nf6 14.Nb3 Qf5+–) 14.Na4 Qa7 15.Nf5 1–0. GuestFHRH – GuestDSHN, freechess.org, 2017.

5.Nd4 e5 6.Nf3 Bd6 7.Ne5 Be5 8.Be5 Nf6 9.e3 Nbd7 10.Bb2 0–0 11.c4 Nc5 (11...a6 12.Qf3+–) 12.Be2 (12.Ba3 Nce4 13.Bf8 Qf8+–) 12...Nfe4 13.0–0 Qh4 (13...Nd3 14.Bd4 Nf4 15.d3+– (15.ef4?! Qd4 16.Nc3 Nf6+–)) 14.d3 Ng5 (14...Nd6 15.d4 Nce4 16.f3+–) 15.f4 Nge6 16.Rf3 (16.f5 Nd8+–) 16...Nd8 (16...Qe7 17.Nc3+–) 17.Rg3 g6 (17...Nce6 18.f5 Ng5 19.Rg4+–) 18.Rg5 (better 18.Qe1!? Qh6 19.Ba3 Nd7 20.Bf8 Qf8+–) 18...Nde6 19.Rg4 Qh6 20.Rg3 Nd8 (20...Rd8 21.Qc2 Re8 22.Nc3+–) 21.Qc2 (21.Nc3 c6 22.Ba3 Nd7 23.Bf8 Qf8+–) 21...Bf5 22.Qc3 (22.Nc3 c6 23.Ba3 b6+–) 22...f6 23.Qd4 (better 23.Ba3 Nde6 24.e4 Be4 25.Bc5 Nc5 26.Qd4 (26.de4?! Ne4 27.Qe3 Ng3 28.Qg3 Rfd8+–) 26...Qf4 27.Nc3+– (worse 27.Qc5 Qc1 28.Kf2 Qb2 29.de4 Qa1+–)) 23...b6?? (better 23...Nde6 24.Qd5 Qg7+–) 24.Qd5 Nde6 25.e4 (better 25.Qf5! Qh4 26.Qh3 Qh3 27.Rh3+–) 25...Be4 26.de4 Qf4 (26...Rad8 27.Qf5+–) 27.Bg4 Rad8 28.Be6 Kg7 29.Rf3 Rd5 30.Rf4 (30.cd5?! Qe4 31.Nd2 Qe2+=; 30.ed5?! Qc4 31.Na3 Qe4+–) 30...Ne6 (30...Rd1 31.Rf1 Rf1 32.Kf1 Ne6+–) 31.Rf6 Rf6 (31...Rb5 32.cb5 (32.Re6?! Rb2 33.Re7 Kh6+–) 32...Rf6 33.Nd2+–) 32.cd5 Nf4 33.Bf6 Kf6 34.Nd2 Ke5 35.Rf1 g5 (35...h6 36.g3 Ne2 37.Kf2+–) 36.g4 (36.g3!? Ne2 37.Kf2 Nc3+–) 36...h6 37.h4! gh4 38.Kf2 h3 (38...Kd4 39.Rh1 Kd3 40.Kf3+–) 39.Ke3 (39.Kf3 Nd3+–) 39...Ng2 40.Kf2 Nf4 41.Kg3 (41.Kf3 Nd3+–) 41...Nd3 42.Kh3 Nf4 (42...Kd4 43.Kg3 Ke3 44.Rf3 Kd2 45.Rd3 Kd3 46.e5+–) 43.Kg3 Ne2 44.Kh4 (44.Kf3 Nc3 45.Ke3 Kd6+–) 44...Nf4 (44...Nc3 45.Rc1 Nb5+–) 45.Kg3 Ne2 46.Kf2 Nf4 47.Ke3 Ng2 48.Kd3 Nf4 49.Kc3 Ne2 50.Kc4 Nf4 51.Rh1 Kf6 (51...Ng2 52.Rh6 Ne3 53.Kd3 Ng4 54.Re6 Kf4 55.Re7+–) 52.Rh6 Kg5 53.Rh7 Kg4 54.e5 (54.Rc7!? Kg3+–) 54...Kf5 55.e6 Kf6 (55...Ne6 56.Rf7 Ke5 57.Nf3 Kd6+–) 56.e7 (56.e7 Nd3 57.e8Q Nb2 58.Kb3 c6 59.Qe6 Kg5 60.Rg7 Kf4 61.Rg4) 1–0. GuestMPBT – Guestcvgd, freechess.org, 2017.

5.Nd4 Nf6 6.e3 e6 7.c4 Bd6 8.Nf3 0–0 9.Be2 Nbd7 10.0–0 Ne5?? (better 10...c5+–) 11.Ne5 Ne4 12.d3 Ng5 13.Nd2 Qf6 (13...f6 14.Nef3+–) 14.f4 Qh6 (14...Qd8 15.fg5 Qg5 16.Rf3 Be5 17.Ne4 Bh2 18.Kh2 Qh4 19.Kg1+–) 15.fg5 (better 15.Bh5!? f5 16.fg5 Qg5+–) 15…Qg5 (15...Qg5 16.Rf3 Be5+–). GuestVWGW – ktiink, freechess.org, 2017.

5.Bd4 a6

6.a4 Nf6 7.Nc3 g6 8.e3 Bg7 9.Bd3 0–0 10.0–0 Nbd7 11.Qe2 b6 (11...c5 12.bc6! bc6 13.e4+–) 12.ba6 Ba6?? (better 12...c5 13.Bf6 Bf6+–) 13.Ba6 c5 14.Bf6 Bf6 15.Bb7 Ra7 16.Be4 Bc3 17.dc3 Nf6 18.Qc4 Rc7 (18...Ne4 19.Qe4 Qd6 20.Ne5+–) 19.Bd3 1–0. Ddgs – Seer, internet, 2019.

6.a4 ab5 7.ab5 Ra1

8.Ba1 c6 9.c4 cb5 10.cb5 Qa5 (10...Nf6!?+–) 11.Qc2 Bd7 (11...Nc6 12.bc6 Qa1 13.cb7 Bb7 14.e4+–) 12.Be5 Qb5 (12...Qd8+–) 13.Bb8 e6 14.Ne5 Bb4 15.e3 Nf6 (15...Qc5 16.Nc4 Qe7+–) 16.Bb5 (16.Bb5 0–0 17.Nd7 Nd7 18.Bd7 Rb8 19.Qc7+–) 1–0. GuestBGTK – GuestVCTB, freechess.org, 2019.

8.Ba1 c6 9.c4 Nf6 10.e3 (10.Qa4 cb5 11.Qb5 Nc6+–) 10...e6 (10...cb5 11.cb5 Bf5 12.Be2+–) 11.Qc2 (11.Nc3 Nbd7+–) 11...Bc5 (11...cb5 12.cb5 Nbd7 13.Be2+–) 12.Bd3 (12.d4 Bb4 13.Bc3 Be7+–) 12...0–0 (12...cb5 13.cb5 Nbd7+–) 13.Bf6 Qf6 14.Bh7 Kh8 15.Bd3 (15.Be4 e5+–) 15...e5 16.0–0 Bg4 17.Be2 (17.Be4 Nd7+–) 17...Re8 (17...Bf5!? 18.e4 Bg4+–) 18.Nc3 Qe7 (18...Nd7 19.h3 Bh5 20.Ne4+–) 19.h3 Bh5 20.Ne5! Qe5 (20...Be2 21.Ne2 Qe5 22.d4+–) 21.d4 Bd4 (21...Qg5 22.Bh5 Qh5 23.dc5+–) 22.ed4 Qe2 (22...Qg5+–) 23.Ne2 (23.Qe2?! Be2 24.Re1 cb5+–) 23...Re2 24.Qf5 g6 1–0. GuestLBCN – mssbhhbssm, freechess.org, 2020.

8.Ba1 c6 9.e4 Nf6 10.Nc3 Nbd7+–.

8.Ba1 Qd5 9.e3 Bg4 10.c4 (10.h3 Bf3 11.Qf3 Qf3 12.gf3 f6+–) 10...Qe4 (10...Qd8 11.d4+–) 11.Nc3+– Qe6 (11...Qf5 12.d4+–) 12.h3 (12.Nd5 Qc8 13.Be5 c6+–) 12...Bh5 (12...Bf5 13.Nd5 Qc8 14.Be5+–) 13.Nd5 (13.Nd4 Bd1 14.Ne6 Bc2 15.Nc7 Kd8+–) 13...Qd7 (13...Qc8+–) 14.Be5 e6 (14...f6 15.Bc7 e6 16.Bb8 ed5 17.cd5+–) 15.Nc7 Kd8 16.Qa1 f6 17.Qa8 fe5 (17...Qc8 18.Qb8! Qb8 19.Ne6 Kd7 20.Bb8 Ke6+–) 18.Qb8 Ke7 19.Ne5 Qd6 20.g4 Qe5 21.Nd5!! Qd5 (21...ed5 22.Qe5 Double attack (22.Qe5 Discovered attack)) 22.cd5 Bg6 23.Qc7 Kf6 (23...Ke8 24.b6 Bd3 25.de6 Nf6 26.Bd3 Be7 27.Bb5 Kf8 28.Qc8 Bd8 29.Qd8 Ne8 30.Qe8) 24.g5! Kg5 (24...Kg5 25.Qf4 Mate attack) 25.Qf4 Kh5 26.Be2 1–0. DEFFM – GuestHKJB, freechess.org, 2018.

8.Ba1 f6 9.e3 e5 10.Bc4 g5?? (10...Nd7+–) 11.Ne5! fe5 12.Qh5 Kd7 13.Be5 Nf6 (13...Qe8 14.Qg5 Be7 15.Qf5 Kd8 16.Qd3 Nd7 17.Bh8 Ngf6 18.Bf6 Bf6+–) 14.Qf7 Qe7 15.Be6 Kd8 16.Bf6 Be6 17.Qe6 Rg8 18.Be7 Be7 19.Qg8 (19.Qg8 Kd7 20.Qb8+–) 1–0. DEFFM – GuestZYJL, freechess.org, 2018.

8.Ba1 Nf6 9.Nc3+–.

5.Bd4 e6

6.a3 b6 (6...c5 7.Bb2+–) 7.e3 Nd7 8.Be2 Ne7 9.0–0 Nf5 10.Bb2 Bb7 11.Nd4 (11.Nc3 a6+–) 11...Nd4 12.Bd4 Qg5 (12...e5 13.Bb2+–) 13.Bf3+– Bf3 14.Qf3 Rb8 (14...Rd8 15.Qc6+–) 15.Nc3 (15.Qc6 Bc5+–) 15...Bd6 (15...e5 16.Ne4 Qg6 17.Bc3+–) 16.Ne4 (16.Qc6+–) 16...Qe7? (16...Qb5 17.Bg7 Rg8 18.Bc3+–) 17.h3 (better 17.Bg7 Rg8 18.Bf6+–) 17...f5 18.Ng3 Rg8 (18...0–0 19.e4+–) 19.Qh5 (19.e4 Bg3 20.Qg3 Qd6 21.Qd6 cd6 22.ef5 ef5 23.Rfe1 Kf7+–) 19...g6+– 20.Qe2 Qh4 21.f4?? (21.Qc4 Ke7 22.e4 f4+–) 21...Bc5?? (better 21...Qg3 22.Rf3 Qh4–/+) 22.Nh1 (22.Qc4 Kf7 23.Ne2 Rgc8+–) 22...Bd4 (22...g5!?+–) 23.ed4+– Ke7 (23...Qf6 24.Qc4+–) 24.d5 (24.Rae1 Qf6 25.Qc4 Rge8+–) 24...Nf8 (24...Qf6 25.Nf2 Kf7 26.Qc4 ed5 27.Qc7+–) 25.de6 (25.Rae1 Rd8 26.Qc4 Qf6+–) 25...Ne6 26.d4 (better 26.Rae1 Qf6 27.Qc4+–) 26...Rbe8?? (better 26...Kf7 27.Qc4 Rge8+–) 27.d5 Kf7 28.de6 Re6 29.Qc4 Rge8 (29...c5 30.Rfe1 Rge8 31.Re5+–) 30.Qc7 Kf6 (30...Qe7 31.Qe7 R8e7 32.Rad1+–) 31.Qc3 (31.Qa7 R8e7 32.Qb8 Kg7+–) 31...Kf7 32.Qc7 Kf6 33.Qc3 (33.Qa7 R8e7 34.Qb8 Kg7+–) 33...Kf7 34.Rad1 R8e7 35.Ng3 (35.Rd8!? Re8 36.Rd7 R8e7 37.Re7 Re7+–) 35...Re3 36.Qc4 Kg7 37.Rd3 (better 37.Qd4 Kh6 38.Nh1+–) 37...Rg3?? (37...Qg3 38.Qb4 Re8 39.Qd6+–) 38.Rg3 (better 38.Qc3! Qf6 39.Rg3 Qc3 40.Rc3+–) 38...Qg3+– 39.Rf3 (39.Qd3 Qe3 40.Kh2 Qd3 41.cd3 Rc7+–) 39...Qh4 (better 39...Re1!? 40.Rf1 Re7=) 40.Qb4 (40.Qd4 Qf6 41.Rd3 Re1 42.Kh2 Qd4 43.Rd4 Kf7+–) 40...Re4 41.Qd6 Qe7 42.Qd3 (42.Qe7 Re7 43.Rc3 h5+–) 42...Re1 43.Kh2 Qe4 (43...Re4 44.Qd2+–) 44.Qd7 Kh6 45.Qc7 (better 45.Qf7!? Qe7 46.Qe7 Re7 47.Rc3+–) 45...Re2= 46.Qc3 Rc2 47.Qe3 Qe3 48.Re3 Rc5 49.Rb3 Kg7 50.Kg3 Kf7 51.h4 (51.Kf3 Ke6=) 51...Ke6 52.Kf3 Kd5 53.g3 (better 53.g4=) 53...Kd4 54.a4?? (54.Ke2 Rc2 55.Kd1–/+) 54...Rc3 55.Rc3 Kc3 56.Ke3 Kb4 57.Kd4 Ka4 58.Kc4 (58.Ke5 Kb5 59.Kf6 Kc4–+) 58...Ka3 (58...Ka5!? 59.Kc3–+) 59.Kc3 Ka4 60.Kc4 Ka3 61.Kc3 h5 62.Kc4 (62.Kd4 Kb4 63.Ke5 Kb5–+) 62...Kb2 (better 62...Ka4!? 63.Kd4–+) 63.Kb4 Kc2 64.Kc4 Kd2 65.Kd5 Ke2 66.Ke6 (66.Kd6–+) 66...Kf2 67.Kf6 Kg3 68.Kg6 Kf4 (better 68...Kg4 69.Kf6 Kf4 70.Ke6–+) 69.Kh5 Ke4 70.Kg5 f4 71.h5 f3 72.h6 f2 73.h7 f1Q 74.h8Q Qf4 75.Kg6 Qf5 76.Kg7 Qe5 77.Kg8 Qh8 78.Kh8 Kd5 79.Kg8 Kc5 80.Kf8 Kb5 81.Ke7 a5 82.Kd6 a4 83.Kd5 a3 84.Kd4 a2 85.Kc3 a1Q 86.Kb3 (86.Kc2 Kc4 87.Kd2 Qd4 88.Ke1 Qf4 89.Ke2 b5 90.Kd1 Kd3 91.Ke1 b4 92.Kd1 Qd2) 86...Qb1 87.Kc3 Ka4 (87...Qe4 88.Kb3 Qe3 89.Kb2 Kc4 90.Kc2 Qe2 91.Kc1 Kc3 92.Kb1 Qb2) 88.Kd4–+ b5 89.Kc5 (89.Kd5 Qd3 90.Ke6 b4 91.Kf7 b3 92.Ke7 b2 93.Kf6 Qd7 94.Ke5 b1Q 95.Kf4 Qbf5 96.Kg3 Qg7 97.Kh4 Qgg4) 89...b4 (89...Qf5 90.Kc6 b4 91.Kd6 b3 92.Kc6 b2 93.Kd6 b1Q 94.Kc7 Qe6 95.Kd8 Qbb6) 90.Kb6 (90.Kd5 Qd3 91.Ke5 b3 92.Kf6 b2 93.Kg7 b1Q 94.Kf6 Qb6 95.Kf7 Qbg6 96.Ke7 Qdd6) 90...b3 91.Kc7 (91.Kc6 Qe4 92.Kd6 b2 93.Kd7 b1Q 94.Kc7 Qbb7 95.Kd6 Qbc6) 91...b2 92.Kd6 (92.Kc6 Qe4 93.Kd6 b1Q 94.Kc7 Qbb7 95.Kd6 Qbc6) 92...Qc1 (92...Qg6 93.Kd7 b1Q 94.Kc7 Qbb6 95.Kd7 Qge6) 93.Ke5 b1Q 94.Kd6 (94.Kd4 Qf4 95.Kd5 Qd3 96.Ke6 Qdd6) 94...Qd1 (94...Qg6 95.Kd5 Qcc6 96.Ke5 Qge4) 95.Ke6 (95.Ke5 Qe1 96.Kf6 Qh7 97.Kg5 Qeh4) 95...Qg6 96.Ke5 Qdd6 0–1. Akrapovik (1625) – Annabelle6x (1665), lichess.org, 2020.

6.e3 Bd6?? 7.c4 (better is 7.Bg7 Ne7 8.Bh8+–) 7...f6+/– 8.Be2 e5 9.Bb2 Ne7 10.0–0 Bf5 (10...e4 11.Ne1+/–) 11.d4+– 0–0? (better is 11...ed4 12.Nd4 Be5+–) 12.c5 (12.de5?! fe5 13.Ne5 Be5 14.Be5 Nd7+–) 12...e4 13.cd6 ef3 14.de7 fe2 15.ed8Q ed1Q 16.Qf8!! Kf8 17.Rd1 1–0. Fournier,Frederic (1750) – AldoPedroPoy, Active, 2006.

6.e3 Nf6 7.c4 c6 8.a4 Bb4 9.Be2 0–0 (9...a6 10.0–0+–) 10.0–0 b6 (10...a6 11.Bc3 Bd6 12.Qc2+–) 11.Bb2 (11.Ne5 Qc7+–) 11...Be7 (11...a6 12.Qb3 Bd6 13.d4+–) 12.Qc2 Bb7 13.Nc3 cb5 (13...a6 14.d3+–) 14.ab5 Nbd7 (14...a6 15.d3+–) 15.d4+– a5 16.Rfd1 (16.ba6 Ba6 17.e4 Nh5+–) 16...Qc7 17.Ne5! Ne5 18.de5 Qe5?? (better 18...Nd7+–) 19.Nd5+– Qg5 20.Ne7 (20.f4 Qh4 21.Ne7 Kh8+–) 20...Kh8 21.g3 (better 21.Nc6 Bc6 22.bc6 Rfc8+–) 21...Ng4 (21...Rfd8 22.Bd4 Be4 23.Qa4+–) 22.Bg4 (better 22.Rd7 Bc8 23.Nc8 Rfc8+–) 22...Qg4 23.Nc6 (23.Rd4 Qg5 24.Rd7 Bf3+–) 23...Rac8 (23...Bc6 24.bc6 Rfc8 25.Qa4+–) 24.Rd4 Qf3 25.Rf4 Qh5 26.Rh4 Qg6 (26...Qf5 27.Qf5 ef5 28.Ne5+–) 27.Qg6 fg6 28.Rd1 (28.Ne7 g5 29.Nc8 gh4 30.Nb6 hg3 31.fg3 Kg8+–) 28...g5 (28...Bc6 29.bc6 Rc6 30.Rd7+–) 29.Rhd4 (better 29.Rd7 e5 30.Be5 gh4 31.Rg7 Rfe8+–) 29...h6 (29...Bc6 30.bc6 Rc6+–) 30.Ne7 1–0. GuestXSBG – GuestJCHT, freechess.org, 2016.

6.e3 Nf6 7.Bc4 Nbd7 8.0–0 Be7 (8...Bd6 9.d3+–) 9.e4! 0–0 (9...Ne4 10.Bg7 Pinning (10.Bg7 Deflection)) 10.Nc3 b6 (10...Ng4 11.e5+–) 11.e5 Ne8 12.Qe2 Bb7 13.Bd3 (better 13.Rfb1+–) 13...c6? (better 13...c5 14.bc6! Bc6+–) 14.Qe4+– g6 (14...f5 15.ef6 Ndf6 16.Qe6 Kh8 17.bc6 Bc8+–) 15.bc6 Bc6 16.Qc6 Nc7 (16...Nc5 17.Bc5 Bc5 18.Ba6+–) 17.Ne4 Nd5 18.Rab1 (better 18.Rfb1 Rc8 19.Qa4 Qc7+–) 18...Nb4 (18...Rc8 19.Qa4+–) 19.Rb4! Bb4 20.Qd7! Kg7 (20...Qd7 21.Nf6 Double attack (21.Nf6 Decoy)) 21.Qa4 Be7 22.Be3 (22.Nc3 Qc7+–) 22...h6 (22...Qc7 23.Nf6! Bf6 24.ef6 Kg8 25.Qh4+–) 23.Nf6! Bf6 (23...Bf6 24.Qf4 Double attack (24.Qf4 Decoy)) 24.ef6 Kh7 (24...Kg8 25.Bh6 Qf6 26.Bf8 Kf8+–) 25.Qf4 (25.Qf4 Kg8 26.Qh6 Qf6 27.Bd4 Qd4 28.Nd4+–) 1–0. DEFFM – TangoVirtud, freechess.org, 2018.

6.e3 Nf6 7.Be2 Be7 8.c4 0–0 9.0–0 Nbd7 10.Qc2 Bc5 (10...a6 11.e4+–) 11.Bc3 (11.Bc5 Nc5 12.d4 Ncd7+–) 11...Be7 12.d3 h6 13.Nbd2 Bd6 14.Ne4 (14.d4 a6+–) 14...Ne4+– 15.de4 e5 16.Qb2 (16.Rad1 Qe7+–) 16...Qe7 17.a3 b6 18.h3 (18.Rfd1 Bb7+–) 18...Bb7 19.Bd3 a6 20.a4 ab5 21.ab5 Rfe8 22.Ra8 Ba8 23.Nh2 (23.Rd1 Nc5 24.Qc2 Rd8+=) 23...Nc5 24.Qc2 Bb7 25.f3 (25.Rd1 Rd8+=) 25...Nd3 (25...Qg5 26.Ng4=) 26.Qd3+= Bc5 27.Ng4 Rd8 28.Qe2 Bd6 29.Qb2 Re8 30.Ra1 Qg5 31.Ra7 Bc8 32.h4 (32.Ra8!?+–) 32...Qh4= 33.Ne5 Be5 34.Be5 Qe1 35.Kh2 Qh4 36.Kg1 f6 (better 36...Qe1!? 37.Kh2 Qh4 38.Kg1=) 37.Bc3+– Qh5? (better 37...Rd8 38.Qe2 Qg3+–) 38.Rc7+– Qg6 39.c5 (39.Qf2 Be6+–) 39...bc5 40.Rc5 Bh3 41.b6 Bc8? (41...Rb8 42.Qa2 Kh7+–) 42.b7 Bb7 43.Qb7 h5 (43...Qf7 44.Rc7 Qg6 45.Qc6+–) 44.Rc8 (better 44.Qd5!? Qf7+–) 44...Rc8 45.Qc8 Kh7 46.Qf5 Qf5 47.ef5 Kg8 48.g3 (48.Bf6 gf6 49.Kh2 Kf8+–) 48...Kf7 49.g4 (49.e4 g6+–) 49...hg4 50.fg4 g5 (50...Ke7+–) 51.Kf2 Ke7 52.Bb4 Kd7 53.Ke2 Ke8 54.Kd3 Kd7 55.Kd4 Kc6 56.e4 Kd7 57.e5 fe5 58.Ke5 (58.Ke5 Kc7 59.f6 Kb8 60.f7 Kc7 61.f8Q Kb7 62.Qe7 Kc6 63.Qa7 Kb5 64.Qb7 Ka4 65.Bc3 Ka3 66.Qb4 Ka2 67.Qb2) 1–0. GuestRBHB – guestfighter, freechess.org, 2017.

6.e4 Nf6 7.e5 Nd5 8.Be2 Be7 9.0–0 f6 10.Nc3 0–0 11.Re1. kamret (2240) – Nu_Flava, GameColony.com, 2003.

5.Bd4 Nf6

6.a4 Bg4 7.Bb2 Bf3 8.gf3 e6 9.f4 Nd5 10.Bg2 Nf4? (better 10...c6 11.e3 a6+–) 11.Bb7+– Nd7 12.e3 (12.Ba8 Qa8 13.Rg1 Nh3+–) 12...Rb8 13.Qf3 (better 13.Bc6 Nd5 14.Bd4+–) 13...e5?? (better 13...Ng6+–) 14.ef4 Nc5 (14...ef4 15.Rg1 f6+–) 15.Bc6 Nd7 16.fe5 Be7 (16...Qe7 17.Bd4+–) 17.Rg1 0–0 (17...Kf8 18.Qg4 g6 19.Qd7 Qd7 20.Bd7+–) 18.Bd7 Qd7 (18...f6 19.Be6 Kh8 20.Qh5+–) 19.Rg7! Kg7 20.e6 (20.e6 f6 21.ed7+–) 1–0. Karl – Pipes, internet private, 2018.

6.c4 c6 7.a4 e6 8.e3 c5 9.Bb2 Be7 10.Be2 b6 11.0–0 0–0 12.d4 Ne4 13.Nbd2 Nd2 14.Nd2 Bb7 15.Bf3 Bf3 16.Qf3 (16.gf3?! cd4 17.Bd4 Nd7+=) 16...Nd7 17.Ne4 Nf6 (17...cd4!? 18.ed4 Rc8+/–) 18.dc5+– Ne4 19.Qe4 Bc5 (19...bc5 20.Rad1 Qc7 21.Be5+–) 20.Rad1 (better is 20.Qe5!? Qf6 21.Qf6 gf6 22.Bf6+–) 20...Qe7+/– 21.Rd2 Rad8 22.Rfd1 Rd2 23.Rd2 Rd8? (23...Rc8 24.Qg4 g6 25.Qd1+–) 24.Qc2 (better is 24.Qe5 f6 25.Rd8 Qd8 26.Qe6 Kf8 27.Qd5+–) 24...Rd2+/– 25.Qd2 h6 26.Bc3 f6 27.a5 g5 28.h3 Kf7 29.Kf1 e5 30.Ke2 Qe6 31.Qd5 Qd5 32.cd5 Ke7 33.e4 Kd6 34.f3 Bd4?? (better is 34...Ba3+/–) 35.Bd4+– ed4 36.ab6 ab6 37.Kd3 (37.g4 Kc5 38.Kd3 Kb5 39.Kd4 Ka6+–) 37...Kc5 38.g3 (38.g4 Kd6 39.Kd4 Kd7+–) 38...h5 39.f4 gf4 40.gf4 h4 (40...f5 41.h4+–) 41.d6! Kd6 42.Kd4 Ke6 43.e5 f5 (43...fe5 44.fe5 Ke7 45.Kd5+–) 44.Kc4 Kd7 45.Kd5 Ke7 46.Kc6 (46.Kc6 Ke6 47.Kb6+–) 1–0. Hal1958 – Ama49, playchess.de, 2003.

6.e3 b6 7.Be2 Bb7 8.0–0 e6 9.Ne5 Nbd7 10.f4 Bc5 11.Bb2 0–0 12.d4 Be7 13.Bf3 (13.Bf3 Bf3 14.Qf3 (14.gf3?! Qe8+=) 14...Ne5 15.fe5+–) 1–0. guest217 – guest851, chessclub.com, 2018.

6.e3 Qd5 7.c4 Qd6 8.Be2 (8.c5 Qd8+–) 8...a6 (8...Nbd7 9.Bf6 Qf6 10.Nc3+–) 9.a4 (9.c5 Qd8+–) 9...ab5 (9...Nbd7 10.Bf6 Qf6 11.Nc3+–) 10.ab5+– Ra1 11.Ba1 c6?? (11...Bg4 12.Be5 Qd8 13.d4+–) 12.Nc3 (better 12.Be5 Qd8 13.Bb8 cb5 14.c5+–) 12...cb5 (12...e5 13.d4 ed4 14.ed4+–) 13.Nb5 Qc6 14.0–0 e5?! (14...Bd7+–) 15.Ne5 Qe4 (15...Qb6+–) 16.Nc7 (better 16.f4 Bh3 17.gh3 Qf5+–) 16...Kd8 (16...Ke7 17.f4 Bf5 18.Qb3+–) 17.Bf3 (better 17.d3 Qh4 18.Nf7 Kc7 19.Be5 Kd7 20.Bb8+–) 17...Qc6 (17...Bg4 18.Na8 Rg8 19.Ng4 Qc4 20.Nf6 gf6 21.Bf6 Be7+–) 18.Nf7 Ke7 19.Nh8 (better 19.Bc6 Kf7 20.Be8 Ke7 21.Bf6 gf6 22.Qf3+–) 19...Qc7 20.Bf6 Kf6 21.Bd5 Bd6 (21...g6 22.Qa1 Ke7 23.Qd4+–) 22.Qf3 Ke7 (22...Bf5 23.g4 g6 24.gf5 gf5 25.Qh5 Bh2 26.Kh1+–) 23.Qf7 (23.Qe4 Kf6 24.Qh7 Nc6+–) 23...Kd8 24.Qg8 Kd7 (24...Ke7 25.Qh7 Bh2 26.Qh2 Qh2 27.Kh2+–) 25.Qg7 (better 25.Qe6 Kd8 26.Nf7 Qf7 27.Qf7 Be5+–) 25...Be7 (25...Ke8 26.Qg8 Bf8 27.Bf7 Ke7 28.Qh7+–) 26.Qh7 (better 26.Qg4 Kd8 27.Qg8 Kd7 28.Be6 Kc6 29.Qe8 Nd7 30.Bd5 Kb6 31.Qe7 Ka7+–) 26...Qe5 27.Ng6 Qf5 (27...Qf6 28.d4 Kd8+–) 28.e4 (28.Qe7) 28…Qe5 1–0. GuestQFPL – GuestXNWM, freechess.org, 2017.

6.e3 e6 7.c4 Bd7 8.Bd3 Bd6 (8...c5 9.Bf6 gf6 10.Qc2+–) 9.Qc2 (9.c5 Be7 10.Nc3 Bc8+–) 9...g6 (9...c5 10.Bf6 Qf6 11.Nc3+–) 10.Qb2 (10.Nc3!? Bc8 11.c5 Be7+–) 10...Be7 11.Be4! c5? (11...Ne4 12.Bh8 Pinning (12.Bh8 Deflection)) 12.Bb7 cd4 13.Ba8 de3 14.fe3 Rg8 (14...0–0+–) 15.Ne5 Ne4 (15...Bd6 16.Rf1 Rf8+–) 16.Be4 1–0. GuestYZBW – GuestLYND, freechess.org, 2019.

6.e3 g6 7.c4 Bg7 8.Be2 0–0 9.0–0 c6 10.a4 b6 11.c5 Nbd7 12.bc6 Nc5 13.Qc2 (13.a5 Bf5+–) 13...Qd6 14.Bb2 (14.Bc5!? bc5 15.d4+–) 14...Bf5= 15.Qc1 (better 15.Qd1 Qc6 16.Nd4=) 15...Nb3–/+ (15...Qc6? 16.d4+–) 16.Qc3 Na1 17.Ba1 Nh5 (17...Rfc8 18.Nd4 Nd5 19.Qa3 Qa3 20.Na3 Bd4 21.Bd4 Rc6 22.Bf3–/+) 18.Qa3 (better 18.Ne5=+) 18...Bb1?? (better 18...Ba1 19.Qa1 Qc6–/+) 19.Qd6+= ed6 20.Rb1 Rfc8 21.Nd4 Bd4 22.Bd4 Rc6 23.Bh5?? (better 23.Bf3 Rcc8 24.Ba8 Ra8 25.Rc1+–) 23...gh5–/+ 24.h4 Rac8 25.Kh2 Rc4 26.a5 ba5 27.Ra1 (27.Rb5 Rc2–/+) 27...a4–+ 28.Ba7 (28.Kg3 Rb4–+) 28...R8c7 (better 28...Rh4!? 29.Kg3 Rg4 30.Kf3–+) 29.Bd4 Rb7 30.Bc3? (30.d3 Rcb4–+) 30...Rb3 (30...Rh4 31.Kg3 Rc4 32.Kf3–+) 31.Rg1 (better 31.Bf6–+) 31...Rh4 32.Kg3 Rc4 33.Kf3 a3 34.g4 (34.Ra1–+) 34...hg4 35.Kg3 h5 36.Rh1 Rb5 37.f4 (37.Ra1 Ra4–+) 37...Ra4 38.d3 a2 39.e4 (39.Bf6–+) 39...Rb1 (better 39...Ra3 40.Bf6 Rd3 41.Kh4 Re3–+) 40.Rh5 a1Q (better 40...Kf8 41.Bf6 Ke8 42.Kg4–+) 41.Rg5 (41.Rh8) 41...Kf8–+ 42.Ba1 Raa1 43.Rg4 (43.Kg4 Rg1 44.Kh5 Rg5 45.Kg5 Rd1–+) 43...Rg1 (43...Rd1!? 44.Rg5 Rd3 45.Kg4–+) 44.Kh4 Rh1 45.Kg5 Ra5 (better 45...Rh3–+) 46.Kf6 (46.f5–+) 46...Rh6 47.Rg6 Rg6 0–1. b4_Bb2 (1775) – Waleed2001 (1780), lichess.org, 2020.

4.b5 d3

5.bc6 de2 6.Be2 bc6 7.0–0 Bb7 8.c4 Qd6 9.Qb3 Rb8 (9...Bc8 10.Ne5 e6 11.Nf7 Kf7 12.Bh5 g6 13.Qf3 (worse 13.Bh8 gh5 14.Qf3 Ke7+–) 13...Ke8 14.Bh8+–) 10.c5! Qd7 (10...Qc5 11.Ne5 Combination) 11.Ne5 Qf5 12.Bg4 Qf6 13.Qd3 Rd8 14.Bd7 (14.Bd7 Rd7 15.Qd7) 1–0. GuestWRSB – GuestZJXQ, freechess.org, 2018.

5.bc6 de2 6.Be2 bc6 7.Ne5 Bb7+–.

5.bc6 de2 6.Be2 Nf6 7.Ne5 Nd5 (7...Rb8+–) 8.Bh5 g6 9.Qf3 Be6 (9...Nf6 10.cb7 Bb7 11.Qb7+–) 10.cb7 Rb8 (10...Bg7 11.Bg4 f5 12.ba8R Qa8 13.Bh3+–) 11.Nc6 Qd6 (11...Rg8 12.Nd8 Kd8 13.Bg4+–) 12.Nb8 gh5 13.Nc6 Qc6 14.b8Q Bc8 15.Qc8 1–0. DEFFM – Nemdodona, freechess.org, 2018.

5.bc6 de2 6.Be2 Bg4 7.cb7 Rb8 8.Ne5 Be2 9.Qe2 Rb7 (9...Qd5 10.Nc3 Qe6+–) 10.Qc4 e6 11.Qc6 Ke7 12.Qb7 f6 13.Nc6 (13.Nc6 Kd7 14.Nd8+–; 13.Ba3 Qd6 14.Qc7 Ke8 15.Qc8 Qd8 16.Qc6 Qd7 17.Qd7) 1–0. DEFFM – GuestNZWZ, freechess.org, 2019.

4.b5 e5?

5.bc6 b5 6.Ne5 Nh6 7.Nf3 Bc5 8.g3 (better is 8.c3 d3 9.ed3 0–0+–) 8...d3 (8...0–0+–) 9.Bg7 Rg8 10.Bh6 Bd4 (10...Qf6 11.Nc3 Qh6 12.cd3 Kf8+–) 11.Nd4 Qd4 12.c3 Qe5 (12...Qf6 13.Be3+–) 13.Bf4 Qe4 14.f3 Qc6 15.Bg2 Qe6 16.Bc7 Bb7 17.Bf4 0–0–0 18.Be3 h6 19.Ba7 Rd6 (19...de2 20.Qe2 Qe2 21.Ke2+–) 20.Be3 Re8 21.ed3 Rd3 22.0–0 h5 23.a4 Red8 24.Bf4 b4 25.cb4 R8d4 26.Bh3! Qh3 27.Qc2 Kd8 28.Qc7 Ke8 29.Re1 Kf8 30.Qe7 Kg8 31.Qg5 Kh8 (31...Kh7 32.Qh6 Kg8 33.Re8) 32.Be5 1–0. rcm06 (1905) – smconant, gameknot.com, 2012.

5.bc6 Bc5 6.Ne5 Nf6 7.Nf3 (7.Nd3!? Bb6+–) 7...0–0 8.e3 de3 9.fe3 Re8 (9...Rb8 10.Bd4 Bd4 11.Nd4+– (11.ed4?! Bg4+–)) 10.Be2 Bf5 (10...bc6 11.0–0+–) 11.cb7 Rb8 12.0–0 Rb7 13.Bd4 Be7 14.Nc3 (14.Ne5 c5 15.Rf5 cd4+–) 14...c5 15.Bf6 (15.Be5 Bd6 16.Bd6 Qd6+–) 15...Bf6 16.Rb1 Rd7 (16...Rb1 17.Nb1 (worse is 17.Qb1 Bc3 18.dc3 Qe7+–) 17...Qd5 18.a4+–) 17.Bb5 Bc3 18.Bd7 Bd7 19.dc3 Qc7 (19...Qe7 20.e4! Be6 21.a3+–) 20.Re1 (better is 20.Ng5!? Re7 21.Qd5 Be8+–) 20...Rd8 21.Qe2 Be6 22.a3 Qc6 (22...Qa5 23.Ng5+–) 23.Qb5 Qe4 (23...Qc8 24.Qa5+–) 24.Qc5 Qc2 25.Nd4 Qe4 26.Ne6 Qe6 27.Qd4! Rd4 (27...Rd4 28.Rb8 Mate attack) 28.Rb8 (28.Rb8 Rd8 29.Rd8 Qe8 30.Re8; 28.cd4?! g6+–) 1–0. Fournier,Frederic (1765) – Nanis (1740), Active, 2005.

5.bc6 Ne7 6.cb7 Bb7 7.Ne5 +–.

4.b5 Ne5??

5.Ne5+– c5 6.bc6 Qd5 (6...f6 7.e4 fe5 8.Qh5 g6 9.Qe5+–) 7.cb7 Bb7 8.Nf3 e5 9.e3 f6 (9...Qe6 10.Bb5 (worse 10.ed4 ed4 11.Qe2 Bf3 12.gf3 Bc5+–) 10...Kd8 11.ed4+–) 10.ed4 Bb4 (10...e4 11.Nc3 Qf5 12.Qe2+–) 11.de5 Qe4 12.Be2 (12.Qe2 a6+–) 12...fe5 (12...Rc8 13.c4! Rc4 14.Qa4 Ke7 15.Qa7+–) 13.Be5 Ne7 (13...Nf6 14.a3 Ba5 15.Bf6 gf6 16.0–0+–) 14.a3 Bc5 15.Nc3 (15.d4 Bb6+–) 15...Qg4 16.d4 Qg2 (16...Rd8+–) 17.Rg1 Qh3 18.dc5 0–0 (18...Bf3 19.Bf3 Rd8+–) 19.Rg7 Kh8 20.Rg3 (20.Rg3 Rf6 21.Bf6; 20.Rg6 Rf6 21.Bf6) 1–0. DEFFM – drakdeuuufgtr, freechess.org, 2019.

5.Ne5+– Qd5 6.f4 Nf6 (6...f6 7.Nf3 e5 8.e3+–) 7.e3 Bg4 (7...d3+–) 8.Ng4 e6 (8...Ng4 9.Qg4 de3 10.de3+–) 9.Nf6 +–. Alissa – xadrez, ChessWorld.net, 2003.

5.Ne5+– f6 6.Nd3 e5 7.e3 de3 8.fe3 e4 (8...Be6 9.Be2+–) 9.Nf4 g5 (9...Bf5+–) 10.Qh5 (10...Kd7 11.Ng6+–) 1–0. vallabhan – Alex Raistrick, internet, 2007.

4.b5 Bg4

5.bc6 bc6 6.Nd4 c5 7.Nf3 f6 (7...Rb8 8.Bc3+–) 8.e3 (8.Nc3 Rb8 9.Rb1 e5+–) 8...e5 9.Be2 (9.Bb5 Bd7 10.Bc4 Qc8+–) 9...Ne7 10.h3 Bf5 11.0–0 g5 (11...Rb8 12.Ba3+–) 12.g4 (better is 12.Bc4!? Ng6+–) 12...Be6 13.Na3 Nc6 (13...h5 14.Bc4 Qd7 15.Nh2+–) 14.Bb5 Qd6 (14...Bd7 15.Nh2 Rb8 16.Qf3+–) 15.Qe2 (15.Ne5 fe5 16.Be5 Qe5 17.Bc6 Ke7 18.Ba8 Bg7+–) 15...Be7 (15...Rb8 16.d4 ed4 17.ed4+–) 16.Nc4 (better is 16.Ne5 Bd5 17.Nac4 Bc4 18.Nc4 Qe6+–) 16...Bc4 17.Qc4 a6 18.Ba6 Na5 19.Qb5 Qc6 20.Qc6 Nc6 21.Bb7 0–0 22.Bc6 Rab8 23.Rfb1 h5 24.Nh2 hg4 25.Ng4 Kh7 26.d4 f5 27.Ne5 cd4 28.Bd4 Rb1 29.Rb1 g4 30.hg4 fg4 31.Ng4 Bh4 32.Be4 Kg8 33.f4 Re8 34.Bd5 Kh7 35.Nf6 Kg6 36.Ne8 Kf5 37.c4 Kg4 38.Nc7 Kg3 39.Rb2 Kh3 40.Rh2 Kg4+– 41.Be6 Kh5 42.Bf6 Kh6 43.Rh4 Kg6 44.Bg5 Kg7 45.Bf5 Kf7 46.Rh7 Kf8 47.Ne6 Kg8 48.Rg7 Kh8 49.Rf7 Kg8 50.Rf8 1–0. Fournier,Frederic (1770) – virgenfie (1800), Active (5/0), 2004.

5.Nd4?? Nd4–+ 6.f3 Bf5 7.e4 Be6?? (better 7...Bc8–+) 8.c4?? (better 8.c3 Nf5 9.ef5 Bf5 10.d4=) 8...c5 (8...Bc8 9.Bd4 Qd4 10.Na3–+) 9.Nc3 (9.bc6 bc6 10.Na3 Bc8–+) 9...Nf6 10.Nd5 Nd5 11.cd5 Bd7 12.Qa4 (12.Rc1 e5–+) 12...Qb6 13.Bc4 (13.Bd4 cd4 14.Rc1 a6–+) 13...Nb5 14.Bb5 Bb5 15.Qb3 c4 16.Qc3 e6 17.a4 Ba6 18.Rb1 (18.a5 Qb5 19.de6 fe6–+) 18...ed5 19.Qe5 Qe6 20.0–0 (20.Qe6 fe6 21.Bc3 Rd8–+) 20...de4 (20...Qe5 21.Be5 de4 22.fe4 Bc5 23.Kh1–+) 21.Qe4 Bc5 22.Kh1 0–0–0 (better 22...Qe4!? 23.fe4 0–0 24.Bc3–+) 23.Bg7 Rhg8 (23...Qe4 24.fe4 Rhe8 25.Bc3 Re4 26.Rf7–+) 24.Bc3 b6 (better 24...Qg6!? 25.Qg4 Qg4 26.fg4–+) 25.Qa8 Kd7?? (better 25...Kc7 26.Qa7 Bb7–+) 26.Qa7+– Kc6 (26...Kd6 27.Qa6 Qd5 28.Bb4+–) 27.Qa6 Rb8 (better 27...Qe2!? 28.g3 f5 29.Qb5 Kb7+–) 28.Qb5 Kb7?? (28...Kc7 29.Rfe1 Qg6 30.Be5 Bd6 31.Bg3+–) 29.a5 (better 29.Qc5! Rbc8 30.Qf2+–) 29...Qg6 30.g3 f5?? (30...Qd3+–) 31.Be5 (31.Qd7 Ka8 32.ab6 Qb6 33.Rb6 Rb6 34.Ra1 Kb8 35.Be5 Bd6 36.Bd6 Rd6 37.Rb1 Rb6 38.Rb6 Ka8 39.Qa4) 31...Rbe8 (31...Rbc8 32.Qd7 Rc7 33.Qc7 Ka6 34.ab6 Ra8 35.b7 Re8 36.Ra1 Kb5 37.Rfb1 Bb4 38.Ra5) 32.Qd7 Ka6 (32...Ka8 33.ab6 Qb6 34.Ra1 Qa5 35.Ra5 Ba7 36.Ra7) 33.ab6 Bb6 (33...Qg7 34.Ra1 Ba3 35.Ra3 Kb6 36.Rb1 Kc5 37.Qb5) 34.Qa4 (34.Rb6 Qb6 35.Ra1 Qa5 36.Qc6 Ka7 37.Ra5) 34...Kb7 35.Bd4 (35.Rb6 Qb6 36.Qd7 Qc7 37.Qc7 Ka6 38.Qc6 Ka5 39.Bc3) 35...Re6+– 36.Rb5 (36.Qc4 Rc8 37.Qd5 Kb8 38.Rb6 Rb6 39.Be5 Qd6 40.Bd6 Rc7 41.Bc7 Kc7 42.Rc1 Kb8 43.Qd7 Ka8 44.Qc8 Ka7 45.Rc7 Rb7 46.Qb7) 36...Ra8 (36...Rd8 37.Bb6 Rb6 38.Rfb1+–) 37.Qb4 (37.Rb6 Kc7 38.Rb7 Kb7 39.Qd7 Kb8 40.Rb1 Rb6 41.Be5 Qd6 42.Bd6) 37...f4 (37...Ra6 38.Qc4 Rc6+–) 38.Rb6 Rb6 39.Qb6?? (39.Bb6 Qb6 40.Qe7 Kc6 41.Qe4 Kc5 42.Qa8 fg3 43.d4 Kd6 44.Qf8 Kd5 45.Qf5 Kd6 46.Qe5 Kd7 47.Re1 g2 48.Kg1+–) 39...Qb6+= 40.Bb6 Kb6 41.gf4 Ra2 42.Rb1 (42.Rd1 Kc5+=) 42...Kc5= 43.Rd1 Kd6 (43...Kd4 44.f5=) 44.d3 (better 44.Kg1!?+=) 44...c3= 45.Rc1 c2 (45...Ra3 46.f5 Ke5 47.Kg2=+) 46.Kg2 (46.f5 Ke5 47.f6 Kf6 48.d4=+) 46...Ke6?? (46...Kc5 47.Kf2 Kd4 48.Ke2–+) 47.Kg3?? (better 47.Kf2!?+–) 47...Kf5?? (47...Kd5 48.Kf2 Kd4–+) 48.d4 Rb2 49.d5 Rb4? (better 49...h6+–) 50.Rc2+– Rf4 (50...Rd4 51.Rc7 Rd5 52.Rh7+–) 51.d6 (better 51.Rc7 Rd4 52.Rh7+–) 51...Rd4 52.Rc6 Ke6 53.d7! Kd7 54.Rh6 Rd1 55.Rh7 Kd6 56.h4 Rg1 (56...Ke5 57.h5+–) 57.Kf4 Ke6 58.h5 Rh1 59.h6 Kf6. afsharian – zeph3000, lichess.org, 2018.

5.bc6 Bf3

6.ef3 b6 7.Ba6 e6 8.0–0 Ne7 9.Re1 Nc6 10.Bb7 Rb8 11.Bc6 Ke7 12.Qe2 Qd6 13.Ba3 1–0. pierre – lthic, internet, 2010.

6.ef3 bc6 7.Na3 e5 8.Nc4 f6 9.Bd3 Ne7 10.f4! Nd5 (10...ef4 11.Qf3 Decoy) 11.Qh5 (better 11.fe5 Nb4 12.0–0 Nd3 13.cd3+–) 11...Kd7 (11...g6 12.Bg6! hg6 13.Qh8 Nf4+–) 12.Bf5 Ke7 13.Ba3 (13.Ba3 Qd6 14.Bd6 cd6 15.Na5+–) 1–0. DEFFM – GuestRHJP, freechess.org, 2018.

6.ef3 bc6 7.c3 dc3 8.Nc3 e6 9.Qa4 Ne7 10.Ne4 f6 11.Bc4 e5 12.d4! ed4 13.0–0–0 Ng6 14.Qc6 Ke7 15.Qe6 1–0. aschellen (1610) – moxos99, internet, 2006.

6.ef3 bc6 7.Bc4 Rb8 8.Bb3 e5 (8...e6 9.Qe2 Qd7 10.Qc4+–) 9.Qe2 c5 (9...f6+–) 10.Ba4 Ke7 (10...Qd7 11.Qe5 Kd8 12.Bd7 Nf6+–) 11.Qe5 1–0. GuestGPND – GuestTVVH, freechess.org, 2019.

6.ef3 bc6 7.Bc4 c5?? 8.Bb5 (8.Bb5 Qd7 9.Bd7 Kd7 10.Na3+–) 1–0. wlittle (2245) – dgall (1810), net–chess.com, 2004.

6.gf3 bc6 7.e3 de3 (7...e5 8.Na3+–) 8.fe3 e6 9.Qe2 f6 (9...Rb8 10.Be5+–) 10.Nc3 Bb4 (10...Bd6 11.Rb1+–) 11.Qc4 Qd6 (11...Rb8 12.Qe6 Ne7 13.Bc4+–) 12.Ne4 Qd5 (12...Qf8 13.Qe6 Ne7 14.Bf6+–) 13.Qb4 Ne7 (13...Qd8 14.Qc5 Qd5 15.Rg1+–) 14.Bf6! gf6 (14...gf6 15.Nf6 Double attack) 1–0. DEFFM – GuestVGDF, freechess.org, 2018.

3.Nf3 d3

4.cd3 a6 5.g3 h6 (5...Nc6 6.Bg2+–) 6.Bg2 c6 7.0–0 Bf5 (7...Nf6 8.a3+–) 8.Qb3 (8.a3 Nf6+–) 8...e6 (8...Nf6 9.Na3+–) 9.Ne5 (9.Na3 Nf6+–) 9...Nd7 10.e4 (10.Nc4 Ngf6+–) 10...Bh7 11.a4 (11.Rc1 Ne5 12.Be5 Nf6+=) 11...Ngf6 (11...Ne5 12.Be5 Nf6 13.Na3+–) 12.Na3 (12.Nc4 a5 13.Bc3 ab4 14.Bb4 c5+–) 12...Qc7 (12...Ne5 13.Be5 Qd7 14.b5+–) 13.Nac4 Bd6? (better 13...Rd8+–) 14.Nd7+– Qd7 (14...Nd7 15.Bg7 Rg8 16.Bh6+–) 15.Nb6 (15.e5 Be5 16.Ne5 Qd6+–) 15...Qd8 16.Na8 Qa8 (16...Be7+–) 17.e5 Nd5 (17...Be5 18.Be5 Qd8 19.b5 cb5 20.d4+–) 18.ed6 Qd8 (18...0–0 19.Qc4+–) 19.Bg7 Rg8 20.Be5 f6 21.Bd5 ed5 (21...cd5 22.Bf4 Bf5 23.Rac1+–) 22.Bf4 Qd7 (22...Kf7+–) 23.Rfe1 Kd8 24.Re7 Qc8 (24...Qg4 25.b5 Qf4 26.bc6 Qd6 27.Qb7 Qc6 28.Qc6 Ke7 29.Rb1 Rd8 30.Rb7 Kf8 31.Qf6 Ke8 32.Re7) 25.Rh7 Qf5 26.Rb7 Rg4 27.Qc3 Rf4 (27...d4 28.Qc6 Rg3 29.fg3 Qc8 30.Rc7 Qc7 31.Qc7 Ke8 32.Qe7) 28.Qc6 Rf2 (28...Qc8 29.Rc7 Qc7 30.Qc7 Ke8 31.Qe7) 29.Rb8 (29.Rb8 Qc8 30.Rc8; 29.Qc7 Ke8 30.Qe7) 1–0. DEFFM – sureshGGG, freechess.org, 2018.

4.cd3 b5 5.Nc3 Bb7 6.Nb5+– a6 7.Nbd4 Nc6 8.Nc6 Bc6 9.Rc1 Bf3 10.gf3 Rb8 11.Qa4 Qd7 12.Qd7 Kd7 13.Rg1 Nf6 14.Bh3 e6 15.a3 a5 16.Bf6 gf6+/– 17.ba5 Ba3 18.Ra1 Bb4? 19.Rg7+– Ke7 20.a6 Bc5 21.e3 f5 22.d4 Ba7 23.Rc1 Bb6 24.Ke2 Ba7?? 25.Rc7 Kf6 26.Rcf7 1–0. Wall,Bill – Rayne,Chris, internet, 2004.

4.cd3 Nc6 5.a3 Bg4 6.e3 e5 (6...e6 7.b5 Nb8 8.Be2+–) 7.h3 Bf3 8.Qf3 f6 9.Qh5 g6 10.Qf3 Bg7 11.d4! ed4 12.Bb5 de3 13.fe3 (better 13.Bc6!? bc6 14.Qc6 Kf8 15.de3+–) 13...Nge7+– 14.Bc4 (14.Bc6 Nc6 15.b5 Ne7+=) 14...Qd6 15.0–0 a6 16.b5 (better 16.d4+=) 16...Ne5?? (16...Na5 17.Qe4 f5 18.Qc2 Bb2 19.Qb2=) 17.Qb7?? (17.Be5 Qe5 18.d4 Qd6 19.ba6 Ra6 20.Bb5 Kd8 21.Ba6 Qa6+–) 17...Rd8? (better 17...Nc4 18.Qa8 Kd7=) 18.Ba2 (18.Be5!? Qe5 19.Ra2 ab5 20.Bb5 Kf7+–) 18...ab5 19.Qb5 c6 20.Qb3 Nd5 21.Nc3 Rb8 (21...f5 22.Nd5 Qd5 23.Be5 Be5 24.d4 Qb3 25.Bb3+–) 22.Qc2 (better 22.Ne4 Qd8 23.Qc2+–) 22...Nc4?? (better 22...f5+–) 23.Bc4+– Nc3 24.Bc3 Qc5 (24...Rb7 25.a4+–) 25.Bd4 (better 25.Bf6 Bf6 26.Bf7 Kf7 27.Qc5 Rbf8+–) 25...Qd6 26.Rab1 Ke7 27.Ba2 Rhc8 (27...Kd7+–) 28.Bc5 1–0. GuestLGCP – Aaean, freechess.org, 2017.

4.cd3 Bf5 5.Nd4 Bg6 6.e3 (6.Qa4 Nd7+–) 6...Nf6 7.Be2 e6 8.Qa4 Nbd7 9.0–0 Bd6 10.Nb5 0–0 (10...Be7 11.Qa5 (worse 11.Na7 Qb8–/+) 11...0–0 12.Qc7+= (worse 12.Nc7 b6 13.Ne6 fe6–/+)) 11.Nd6+– (11.Na7? Qb8–+) 11...cd6 12.Nc3 d5 13.Qb3 Ne5 14.f4 (14.Na4 Qd6+–) 14...Neg4 (14...Nd3!? 15.f5 Nb2 16.fg6 Nc4 17.gh7 Nh7=) 15.h3 Bd3?? (better 15...Nh6!?+–) 16.hg4 (better 16.Bd3 Nh6 17.g4+–) 16...Be2 17.Ne2 Ng4 18.g3 f6 (18...a5 19.Bd4+–) 19.Kg2 (19.f5 e5 20.Nc3 Kh8 21.Qd5 a5+–) 19...e5? (19...a5 20.ba5 Qa5 21.Bc3+–) 20.Rh1 (20.Nc3 Kh8 21.Nd5 e4+–) 20...ef4 (20...Rf7+–) 21.Nf4 (21.ef4?! Qd7+–) 21...Nh6 (21...Rf7 22.Nd5 (22.Qd5?! g5+–) 22...Qd7 23.Rae1+–) 22.Qd5 (22.Qd5 Nf7 23.Bd4+–) 1–0. GuestFTPC – GuestJZQQ, freechess.org, 2017.

4.cd3 f6 5.a3 e5 6.g3 Bg4 7.Bg2 Bf3 (7...Bf3 8.Bf3 c6+/–). TheWelshKnight – karlsdad, ChessWorld.net, 2014.

4.ed3 a6 5.a4 Bg4 6.Be2 h6 (6...e6 7.0–0+–) 7.0–0 e6 8.Ne5 Be2 9.Qe2 Bb4?? (better 9...Nf6+–) 10.Qf3+– Nf6 11.Nf7! Kf7 12.Qb7 Nbd7 13.Qb4 Rb8 14.Qc3 Re8 15.Re1 Kg8 16.Na3 Re7 (16...c5 17.Nc4+–) 17.Nc4 (17.Rab1 Nd5 18.Qc4 Re8+–) 17...Nd5 (17...c5 18.d4+–) 18.Qd4 Qf8 19.Ba3 c5 (19...Nb4 20.Rac1+–) 20.Bc5 Nc5 21.Qc5 Rc8 (21...Qf4 22.Re4 Qf6 23.Rae1+–) 22.Qd6 Qf6 23.Rab1 Rf7 (23...Rf8 24.f3+–) 24.f3 (24.Qe6 Qe6 25.Re6 Rf6+–) 24...Rd8 (24...Nc7 25.Qc5 Re7 26.Rb7+–) 25.Qe6 Qf4 (25...Qd4 26.Kf1 Nc7+–) 26.Ne5 Rdf8 (26...Nc7 27.Qf7 Qf7 28.Nf7 Kf7+–) 27.Qd5 1–0. DEFFM – GuestXCWC, freechess.org, 2018.

4.ed3 e6 5.Be2 Bb4?? (better is 5...Nf6+/–) 6.Bg7+– f5 (6...f6 7.Bh8 Kf7 8.Ne5 fe5 9.Bh5 Ke7 10.Qg4+–) 7.Bh8 Nf6 8.0–0 Nc6 9.d4 Nd4 (9...Kf7 10.Bf6 Qf6 11.c3+–) 10.Nd4 +–. anizan dolivia – xadrez, ChessWorld.net, 2003.

4.ed3 f6 5.Be2 e5 6.Ne5?? fe5=+ 7.Bh5 (7.Be5 Nf6 (7...Bb4?? 8.Bg7 Qg5 9.Bh8+–) 8.a3 Nc6–/+) 7...g6–/+ 8.Be5 Nf6 9.Qe2 Qe7?? (better 9...Kf7 10.Bf3 Bb4–/+) 10.Bf6+– Qe2 11.Be2 Rg8 12.Nc3 (12.a3 Bg7 13.Bg7 Rg7+–) 12...Be6 (12...Bb4 13.a3 Bd6 14.Ne4+–) 13.Bf3 Nd7 (13...c6 14.b5+–) 14.Nb5 (14.Bb7 Rb8 15.Bc6 Kf7+–) 14...Rc8 (14...Nf6 15.Nc7 Kd7 16.Na8+–) 15.Bc3 (15.Bd4 c6 16.Na7 Ra8+–) 15...c6 16.Nd4 Bf5 (16...Bd5 17.Bd5 cd5 18.0–0–0+–) 17.0–0 (better 17.g4 Bd3 18.cd3 Rg7+–) 17...b5 (17...Kf7+–) 18.Rfe1 Kf7 19.Nc6 a6 (19...Nf6 20.Na7 Rb8+–) 20.Bd5 Be6 21.Be6 Ke8 22.Bg8 Be7 23.Re7 Kf8 24.Bd5 (24.Bd5 Ne5 25.Be5 Rc6 26.Rh7 Rc4 27.Re1 Re4 28.Re4 Ke8 29.Bf6 Kf8 30.Bg7) 1–0. DEFFM – GuestNMBN, freechess.org, 2018.

4.ed3 Nf6 5.Be2 e6 6.b5 c6 7.a4 Bd6 (7...Bb4 8.0–0+–) 8.c4 (8.Nc3!?+–) 8...0–0+= 9.0–0 h6 (9...b6 10.Nc3+=) 10.h3 (10.Qc2 b6+–) 10...Nh7 (10...b6 11.Nd4+=) 11.d4 (11.Nc3 Nf6+–) 11...Qf6 (11...Nf6 12.Ne5+–) 12.Qc2 Re8 (12...Qe7 13.Ne5+–) 13.Ne5 (13.c5 Bf4 14.Bd3+–) 13...Be5 (better 13...Qf4!?+–) 14.de5+– Qg5 (14...Qf4 15.d4+–) 15.f4 (15.d4 Qf4+–) 15...Qh4 16.Nc3 Rd8 17.Ne4 Nd7 (17...Nf8 18.Kh2 Qe7 19.Nd6+–) 18.c5 (18.Nd6 Nhf8+–) 18...b6 (18...Nhf8 19.Nd6+–) 19.bc6 Nc5 20.Nc5 bc5 21.Qc5 (21.c7!? Rd5 22.Qb3 Qe7+–) 21...Rd2 22.Qe7?? (better 22.c7 Re2 23.Qc6+–) 22...Qe7–+ 23.Ba3 Qh4 (23...Qd8 24.Bf3 Qd4 25.Kh1–+) 24.Bf3 (24.Bg4 Qg3 25.Bf3 Ba6–+) 24...Ba6 25.Rfc1 (25.Bc1 Rc2 26.Be4 Ng5 27.Bc2 Nh3 28.gh3 Qg3 29.Kh1 Qh3 30.Kg1 Qf1 31.Kh2 Qf2 32.Kh1 Qc2 33.Bd2 Qd2 34.Rb1 Bd3 35.Rb4 Bf1 36.Rb2 Qb2 37.f5 Qg2) 25...Qf4 26.Bd6 Ng5 27.c7 (27.Rf1 Qg3 28.Bc7 Nf3 29.Rf3 Qg2) 27...Nf3 28.gf3 Qg3 (28...Qh2) 29.Kh1 Qg2 0–1. GuestSYBB – herculanum, freechess.org, 2017.

4.ed3 h6 5.c4 (5.Be2 Nf6+–) 5...e6 6.a3 Nf6 7.Bf6 Qf6 8.Nc3 g5 9.Ne4 Qe7 10.Ne5 Bg7 11.d4 Nc6 12.Nc6 bc6 13.Ra2 Bd4 14.Be2 Bb7 15.Bf3 0–0–0 16.0–0 f5 17.Ng3 (17.Nc5 Bc5 18.bc5 Qc5=) 17...g4=+ 18.Be2 h5 19.Nh1 (19.c5 h4 20.Nh1 h3=) 19...h4 20.g3?? (better 20.c5=) 20...hg3–+ 21.Ng3 (21.Bg4 fg4 22.h3 Qh4 23.Qg4 gf2 24.Rf2 Rdg8 25.Qg8 Rg8 26.Kf1 c5 27.Rf5 Rg1 28.Ke2 Qe4) 21...f4 (21...Qh4 22.Nh5 Rh5 23.Re1 Qh2 24.Kf1 Qf2) 22.Nh1 (22.Bg4 Qh4 23.Be6 Kb8 24.Nh5 Rh5 25.Qh5 Qh5 26.Rfa1 Qe2 27.Rf1 Qe6 28.Rc1 Qg6 29.Kf1 Qd3 30.Ke1 Rg8 31.h4 Rg1) 22...Qh4 23.Bg4 (23.h3 Qh3 24.Bg4 Qh1) 23…Qh2 0–1. Atotheking (1695) – jalefred, lichess.org, 2020.

4.cd3 e6

5.Qb3 Bd7 6.Nc3 Nf6 7.e3 (7.Ne4 Be7+–) 7...Nc6+= 8.a3 Bd6 9.Be2 (9.Ne4 Ne4 10.de4 0–0+–) 9...Qe7 10.Ne4 Nd5 (10...e5 11.b5 Nd8 12.0–0+–) 11.Nd6 cd6 12.e4 (12.b5 Na5 13.Qa4 b6+–) 12...Nf6 (12...Nf4 13.g3 Ne2 14.Bg7+–) 13.0–0 (13.b5 Nd8+–) 13...e5 (13...a6 14.Nd4+–) 14.Rfe1 (14.b5 Nd8+–) 14...Bg4 (14...Qe6 15.Qe6 fe6 16.Rac1+–) 15.h3 (15.b5!? Nb8 16.d4+–) 15...Bf3+– 16.Bf3 (16.gf3?! Nh5 17.b5 Qg5 18.Kh1 Ne7=) 16...h5 (better 16...a6!?+–) 17.b5+– Na5 (17...Nd4 18.Bd4 ed4 19.Qa4+–) 18.Qa4 b6 19.Bc3 (19.d4 Rc8+–) 19...Nb7 (19...g5 20.Ba5 ba5 21.Rac1+–) 20.d4 0–0 21.de5 de5 22.d4 1–0. GuestKHNR – yomamma, freechess.org, 2017.

5.e3 Nf6 6.b5 Bd6 7.e4 0–0? (better is 7...Bf4+=) 8.e5+– Be7 9.ef6 Bf6 10.Bf6 Qf6 11.Nc3 c6 12.bc6 (12.d4 Rd8+–) 12...Nc6 13.Ne4 Qb2 14.Be2 Nd4 15.Nd4 Qd4 16.0–0 Bd7 17.Qb3 b6 18.Rac1 Rac8 19.Ng5 Rc5 (19...Qf4 20.Nf3+–) 20.Rc5 bc5 21.Qc4 Qd6 (21...Rc8 22.Nf3 Qd5 23.Rc1+–) 22.Qe4 (better is 22.Ne4!? Qf4+–) 22...f5 23.Qb7 Rb8 (23...a5 24.Qa7+–) 24.Qa7 h6 25.Nf3 Bc6 (25...Rb4 26.Rc1 Ra4 27.Qc5 Qc5 28.Rc5 Ra2+–) 26.Ne1 (better is 26.d4!? cd4 27.Qd4 Qd4 28.Nd4 Bd5+–) 26...Ra8 27.Qb6 e5 (27...Rb8 28.Qa6 Ra8 29.Qc4+–) 28.Qb2 (28.Bf3 Rc8+–) 28...Qg6 (28...Bd5 29.a3+–) 29.g3 (29.Nf3 Re8+–) 29...f4 (29...Qe6+–) 30.Qe5 fg3 31.fg3 Re8 32.Qh5 Qd6 33.Qg4 Bd7 34.Qf4 (34.Qc4 Be6 35.Qa4 Bd7 36.Qb3 Be6+–) 34...Qe7?? (better is 34...Qf4 35.Rf4 Re2+=) 35.Bg4 Bc6 (35...Bg4 36.Qg4 Qd6 37.Qc4 Kh7 38.Nc2+–) 36.Qc4 Kh8 37.d4 Qg5 38.d5 (38.dc5 Qd2 39.Bf3 Qe3 40.Kg2 Bf3 41.Nf3 Re4+–) 38...Bb7 (38...Bd5 39.Qc5 Qd2 40.Rf8 Rf8 41.Qf8 Bg8 42.Nf3 Qa2 43.h4+–) 39.d3 Qe3 40.Kh1 Re5 41.Bf3 Bc8 (41...Qd4 42.Qd4 cd4 43.Nc2 Bd5 44.Nd4 Ba2 45.Be4+–) 42.Be4 (better is 42.Nc2 Qg5+–) 42...Bh3 (42...Kg8+–) 43.Rf8 1–0. Hasler,Ueli – Tortoza,Carlos, CiF, 2005.

5.e4 Nf6 6.a3 c5 7.bc5 Bc5 8.d4 Bb6 9.e5 Nd5 10.Nc3 Nc6 11.Ne4 Nf4 12.Nd6+/– Ke7 13.g3 Ng6 14.Bb5 Bc7+/– 15.Bc6 bc6 16.Ne4 Bb6 17.Qc2 Bb7 18.Nd6 Qc7 19.Qe4 Rab8+/– 20.Rc1 c5 21.Qe3 Qd7 22.dc5+– Ba5 23.Bc3 Bc3 24.Rc3 Ba6 25.Rb3 Qa4 26.Nd4 Bc4?? 27.Nc4+– Ne5 28.Nf5! Kd7 29.Qd4 Kc6 30.Qd6 1–0. marus1 – fims, internet, 2001.

5.g3 Bb4?? 6.Bg7+– Nc6 7.Bh8 Qd5 8.Nc3 Bc3 9.Bc3 Bd7 10.Qb3 Qb3 11.ab3 0–0–0 (11...f6 12.Bg2+–) 12.Bg2 (12.Ng5 f6 13.Nh7 e5+–) 12...f6 13.Nd4 Kb8 (13...Nd4 14.Bd4 a6 15.Bc3+–) 14.Nc6 Bc6 15.Bc6 bc6 16.0–0 e5 (16...Kb7 17.Ra4+–) 17.Ra6 Kb7 18.Rfa1 Ra8 19.d4 Ne7 20.de5 f5 21.Bd4 c5 22.Bc5 Nc6 23.e6 h5 24.e7 Re8 25.Ba7 Re7 26.e3 Rd7 27.d4 Rd5 28.Bc5 Kc8 29.b4 Kd7 30.b5 Ne7 31.Ra7 Ng6 32.R1a6 Nf8 33.b6 Rc5 34.dc5 Ne6 35.b7 1–0. madik – steelo72, gameknot.com, 2009.

5.g3 Nf6 +/–.

4.cd3 Nf6

5.a3 e6 6.e3 b6 7.Be2 Bb7 8.0–0 Nbd7 9.h3 (9.Nc3 c5 10.b5 Bd6+–) 9...Be7 10.Bf6 Nf6 11.d4 0–0 12.Nc3 Nd5 (12...c6 13.Ne5+=) 13.Nd5 Bd5 14.Nh2 (14.Qc2 a5+=) 14...Qc8 (14...a5 15.b5=) 15.Bf3+= Qb7 16.Bd5 Qd5 17.Nf3 f5 (17...a5 18.Qc2+=) 18.Ne5 (18.Qc2 Rfc8+–) 18...Bf6 (18...c5 19.bc5 bc5 20.Qa4+=) 19.f4 a5 20.ba5 (20.Qf3 Qf3 21.gf3 b5+–) 20...Ra5+= 21.Qc2 (21.Qf3 Qf3 22.gf3 c5 23.dc5 bc5+–) 21...c5= 22.dc5 Rc5 23.Qb2 Be5 24.fe5 b5 (better 24...Rb5!? 25.Qd4 Qe5 26.Qe5 Re5=) 25.d4+– Rc4 26.Rac1 (26.Rab1 Rb8+–) 26...Rfc8 27.Rc4 bc4 28.Rc1 Qe4 29.Rc3 f4 30.Qe2 (better 30.Qb6!? Rc6 31.Qd8 Kf7 32.Qh4+–) 30...fe3 31.Qe3 (31.Rc4 Rc4 32.Qc4–/+) 31...Qb1 (better 31...Qe3!? 32.Re3 c3+=) 32.Kh2 Qb5 33.Qf3 Qd5 (33...Rf8 34.Qe2 Rc8 35.Qe4+–) 34.Qd5 ed5 35.Kg3 Kf7 36.Kf4 Ke6 37.g4 (better 37.Ke3!?+–) 37...Rf8= 38.Ke3 h6 (38...g5 39.Ke2=) 39.Rc2 (39.a4!? Rf1 40.Ra3+=) 39...Ra8= 40.Ra2 (40.Kd2 Ra3 41.Rc3 Ra2 42.Rc2 Ra8=) 40...g5 (better 40...Rb8!? 41.Rf2 Rb3 42.Ke2 Rh3–/+) 41.Kd2+= Rb8 42.a4 Rb3 43.a5 Rh3 44.Ra4 Rh2 45.Kc3 (45.Ke3 Rh3 46.Kf2 Rh2 47.Kg3 Rd2+–) 45...Rh3+= 46.Kb4 Rh1?? (better 46...Rb3 47.Kc5 c3+–) 47.a6+– Rb1 48.Kc3 (better 48.Ka5!? Rb8 49.a7 Ra8+–) 48...Rb8 (48...Rb3 49.Kc2 Rb8 50.a7+–) 49.a7 Ra8. Abdullaevich (1815) – Demid16 (1915), lichess.org, 2020.

5.e4 e6 6.a3 Be7 7.Be2 0–0 8.0–0 Nc6 (8...a5 9.b5+/–) 9.Nc3 (9.Qc2 a6+/–) 9...b6 (9...a6 10.Na4+/–) 10.e5 (10.Qc2 a6+/–) 10...Nd7 11.d4 f6 (11...a6 12.Qc2+/–) 12.Bc4 White plans d5 12...Kf7? (better is 12...Kh8 13.Be6 fe5+–) 13.d5 (13.d5 Nde5 14.de6 (14.dc6?! Nc4 15.Qc2 Kg8=) 14...Kg8 15.Bd5+–) 1–0. hal1958 – Demonwizard, playchess.de, 2003.

5.Ne5 e6 6.e4 c6 7.a3 Bd6 8.Nc4 Bc7 9.Qc2 b5 10.Ne5 Be5 11.Be5+/– 0–0 12.Be2 Bb7 13.0–0 Nbd7 14.Bd6 Re8 15.d4 e5 16.de5 Ne5 17.Bc5 Qc7 18.Nc3+– Neg4 19.f4 Bc8 20.h3 Nh6 21.a4 Bd7 +=. marus1 – hyss, internet, 2001.

4.cd3 Bg4

5.e3 e5 6.h3 Bf3 7.Qf3 f6 (7...Nc6 8.b5 Nb4 9.Kd1+–) 8.Qb7 Nd7 9.a3 Bd6 (9...Rb8 10.Qa7 c5 11.d4 cb4 12.ab4 Bb4 13.Nc3 Bc3 14.Bc3+–) 10.d4 Rb8 (10...ed4 11.Bd4 a5 12.Qe4 Ne7 13.b5+–) 11.Qc6 (11.Qa7 ed4 12.Bd4 Ne7+–) 11...Rb6 (11...ed4 12.Bd4 a5 13.b5+–) 12.Qe4 Ne7 (12...a5 13.b5+–) 13.Bc4 (13.de5 Be5 14.d4 Bd6+–) 13...Rc6 (13...ed4 14.Bd4 (14.Qd4?! Be5 15.Qg4 Bb2 16.Qg7 Rf8+=) 14...c5 15.bc5 Bc5 16.Bc3+–) 14.Bb3 (14.de5 Be5 15.Be5 fe5+–) 14...ed4 15.ed4 (15.Qd4 Be5 16.Qg4 Bb2 17.Qg7 Rf8=+; 15.Bd4?! Rc1 16.Bd1 Be5 17.Be5 fe5+–) 15...Nf8? (15...a5 16.Qg4 g6 17.ba5+–) 16.0–0 (better 16.Ba4 Qd7 17.Nc3 f5+–) 16...Rb6 17.Re1 Nfg6 18.Qe6?? (better 18.Qd5! Kd7 19.Qe6 Kc6 20.Qe4 Kd7 21.Ba4 c6 22.d5+–) 18...Bh2+= 19.Kh2 Re6 20.Re6 Nf4 21.Re1 (better 21.Re3!?+=) 21...Nd3=+ 22.Re7? (better 22.Re3 Nb2 23.Nc3=+) 22...Qe7 23.Bc3 Nf2 24.Ba4 (24.b5 h5 25.Kg3 Qe1–+) 24...Kd8 25.b5 (25.Bb5 Qd6 26.Kg1 Qg3–+) 25...Ne4 (25...Qd6 26.Kg1 Nh3 27.Kf1 Re8 28.gh3 Qf4 29.Kg2 Re2 30.Kg1 Qg3 31.Kf1 Qf2) 26.Bb4 Qf7 (26...Qd7!? 27.Nc3 Qd4 28.Re1 Nd2 29.Kh1–+) 27.Nc3 Nd2 28.b6? (28.Rd1 Nc4 29.Re1–+) 28...ab6 29.Re1 (29.d5 Nc4–+) 29...f5 (29...c5 30.dc5 Qc7 31.Kh1 bc5 32.Rd1 cb4 33.Rd2 Kc8 34.ab4–+) 30.Bc6 (30.Nb5 Ne4 31.Rc1 c5 32.dc5 bc5 33.Bc5 Nc5 34.Rc5 Qe6–+) 30...Ne4! 31.Ne4 (31.Ne4 fe4 Passed pawn; 31.Be4 fe4 Passed pawn) 31...fe4 32.Re4 Kc8 (better 32...Qc4 33.Bb7–+) 33.Re7? (better 33.d5 Qf5 34.Re7–+) 33...Qf4 34.Kg1 (34.g3 Qd4 35.h4 Rd8–+) 34...Qc1 35.Kh2 (35.Be1 Qc6 36.Bg3 Qc1 37.Kh2 c5 38.dc5 bc5–+) 35...Qc6 36.Rg7 Qf6 37.Rg4 c5! 38.dc5 b5 39.c6 (39.Re4–+) 39...Qe5 40.Rg3 Rg8 41.Be1 Kc7 (better 41...Qf4 42.Bf2–+) 42.Ba5 (42.Bf2 Rf8 43.Bg1 Rf1–+) 42...Kc6 43.Be1 Kc5 (43...h5 44.h4–+) 44.Bb4 (44.Bf2 Kd5–+) 44...Kc4 45.Be1 b4 (45...b4 46.ab4 h5–+) 0–1. GuestLGCP – GuestLWHD, freechess.org, 2017.

5.Ne5 Bc8 6.e4 Nc6 (6...e6!?+/–) 7.Nc6+– bc6 8.g3 e5 (8...a5!? 9.ba5 Ra5+/–) 9.Be5+– Qg5 10.Bc7 Bg4 (10...Bb4 11.Qa4 Qb5 12.Qb5 cb5 13.Nc3+–) 11.Be2 (11.Qa4 Rc8 12.Bf4 Qe7+–) 11...Nf6? (11...Be2 12.Qe2 Bb4 13.d4+–) 12.e5 (better is 12.f4 Be2 13.fg5 (13.Ke2?! Qg4 14.Ke1 Bb4+–) 13...Bd1 14.gf6+–) 12...Be2+/– 13.Qe2 (worse is 13.Ke2 Nd5 14.f4 Qg4 15.Kf2 Qd1 16.Rd1 Nc7+=) 13...Bb4?? (better is 13...Nd5 14.Bd6 Bd6 15.ed6 Kd7+/–) 14.ef6 Kd7 15.fg7 (15.Be5 gf6 16.Bf4 Qd5+–) 15...Qg7?? (better is 15...Rhe8 16.Bf4 Re2 17.Ke2 Re8 18.Be3 Qg4 19.Kf1 Qg7+=) 16.Be5+– f6 17.Qe4 fe5 18.Qb4 e4 19.Qb7 Ke6 20.Qg7 Rhg8 21.Qh7 Raf8 22.Qe4 Kd6 23.0–0 c5 24.Nc3 Re8 25.Qd5 Kc7 26.Qc5 Kb7 27.Rab1 1–0. Rcamargo – Dc, playchess.de, 2003. (=1.Nf3 d5 2.b4 d4 3.Bb2= d3)

5.Ne5 Bd7 6.g3 e6 7.Bg2 Bd6?? (better 7...c6+–) 8.Bb7+– Be5 9.Be5 (9.Ba8? Bb2 10.Nc3 Ba1 11.Qa1 Na6–+) 9...Nc6 (9...f6 10.Bc7 Qc7 11.Ba8 Nc6+–) 10.Bg7 (10.Bg7 Rb8 11.Bc6 Bc6 12.f3+–) 1–0. moss42 (2075) – Embewe (2030), ChessWorld.net, 2014.

5.g3 Bf3 6.ef3 e6 7.b5 (7.a3 Nf6=) 7...Nd7 (7...Nf6 8.Bg2=) 8.Nc3 Ngf6 9.d4 Bd6 (9...Nb6 10.a4=) 10.f4 0–0 11.Bg2 Rb8 12.0–0 (12.Qa4=) 12...h5 (12...Nb6!?=) 13.Qa4+– Nb6 14.Qa7 Nc4 15.Bc1 b6 (better 15...Na5!? 16.d5 Ra8+–) 16.Qa4+– Na5 17.Bb2 h4 (17...Be7 18.Rfe1+–) 18.Rfe1 hg3 19.hg3 (better 19.fg3 Qd7 20.Rac1+–) 19...Bf4?? (better 19...Be7+–) 20.gf4 Ng4 21.Re2 Qh4 22.d5 Qh2 (22...Rbd8 23.de6 fe6 24.Qe4+–) 23.Kf1 Qf4 (23...Rbd8+–) 24.Qf4 (24.Qf4 Nf6 25.de6 fe6 26.Bh3+–) 1–0. Janek – Alethe, internet, 2017.

4.ed3 Nc6

5.b5 Nb8 6.Be2 e6 7.0–0 Nf6 8.h3 (8.d4 a6 9.Nc3 ab5 10.Bb5 Bd7+–) 8...Be7 9.Nc3 b6 (9...0–0 10.d4+–) 10.Ne5 Bb7 11.Bf3 Bf3 (11...Qc8+–) 12.Qf3 (12.Nf3?! a6 13.a4 ab5 14.ab5 Ra1 15.Qa1 0–0+–; 12.gf3?! 0–0+–) 12...Nbd7 13.Nc6 Qc8 14.a4 (14.Ne7 Ke7 15.Ba3 Kd8+–) 14...Bd6 15.Ne4 Ne4 16.de4 0–0 (16...f6 17.Qg4 Kf7+–) 17.e5 Be7 (17...Ne5 18.Be5 Qd7+–) 18.Ne7 (18.Ne7 Kh8 19.Nc8 Rac8 20.a5+–) 1–0. Jeremiah – Zarah, internet, 2019.

5.b5 Nb8 6.Be2 Nf6 7.0–0 b6 (7...a6 8.a4+–) 8.Ne5 (8.Nc3 Bb7 9.Ne5 Nbd7+–) 8...Bb7 9.Bf3 Bf3 10.Qf3 (10.gf3?! a6 11.Nc3 Qd4+–) 10...Nbd7 (10...Qd5 11.Qh3 Nbd7 12.c4+–) 11.Nc6 Qc8 12.Re1 (12.Nc3 a6+–) 12...e6 13.d4 Nd5 (13...Bd6 14.Ba3 Kf8+–) 14.Qd5 Be7 (14...Bd6+–) 15.Re6! fe6 (15...fe6 16.Qe6 Combination) 16.Qe6 Kf8 17.Qe7 Kg8 18.Qe6 Kf8 19.Ne5 Ne5 20.Ba3 c5 21.bc6 1–0. GuestRQYK – vladann, freechess.org, 2020.

4.ed3 Bg4

5.c4 e5 6.Be2 Bf3 7.Bf3 Nc6 8.0–0 Bb4 9.Re1 Bd6 10.Bc6 bc6 11.c5 Be7 12.Be5+– Nf6 13.Qe2 0–0+/– 14.Bf6 Bf6+= 15.Nc3 Qd4 16.Rac1 Qc5 17.Ne4 Qf5 18.Nf6 Qf6+= 19.Qe4 h6 20.Rc6 Qb2 21.Kf1 Qd2 22.Rc7 Qa2 23.Qc4 Qc4 24.dc4 a5 25.Ra1 a4 26.c5 a3 27.c6 a2 28.Rb7 Rfc8 29.c7 Kf8 30.Rb8 Rcb8 31.cb8Q Rb8 32.Ra2 Re8 33.g3 g5 34.h4 Kg7 35.hg5 hg5 36.Ra4 Kg6 37.Rg4 f5 38.Rd4 Re5 39.Rd6 Kh5 40.f3 Re3 41.Kf2 Ra3 42.Rd5 Kg6 43.g4 f4 44.Rd6 Kf7 45.Rh6 Ra2 46.Kg1 Re2 47.Rh5 Kf6 48.Rh6 Kg7 49.Rh5 Kg6 50.Kf1 Ra2 51.Kg1 Ra3 52.Rh3 Re3 53.Kf2 Kf6 54.Rh6 Ke5 55.Rh5 Kf6 56.Rh6 Kg7 57.Rc6 Re7 58.Rc2 Kf6 59.Re2 Re6 60.Re6= Ke6 61.Ke2 Kd5 62.Kf2?? Kd4 63.Ke2 Kc3 64.Kf2 Kd2 65.Kf1 Ke3 66.Kg2 Ke2 67.Kh2 Kf3 68.Kg1 Kg4 69.Kf2 Kh3 70.Kg1 g4 71.Kf2 g3 72.Kg1 f3 73.Kf1 Kh2 74.Ke1 Kg1 75.Kd1 f2 76.Ke2 f1Q (76...f1Q 77.Kd2 Qf4 78.Kc3 g2 79.Kb3 Kf2 80.Kc2 Qb4 81.Kd3 g1Q 82.Kc2 Qgb1) 0–1. Nautiluschess – Spambot, ICS blitz, 2000.

5.Be2 c6 6.Nc3 (6.Na3 Na6 7.b5 cb5 8.Nb5 Nf6+–) 6...Nd7 (6...e6 7.h3 Bf3 8.Bf3 Bb4 9.Ne4+–) 7.h3 (7.b5 Ngf6+–) 7...Bh5 8.0–0 Qc7 (8...Ngf6 9.b5+–) 9.Re1 (9.b5 Ngf6+–) 9...0–0–0 (9...Ngf6 10.b5+–) 10.b5 c5 (10...Ngf6 11.bc6 bc6 12.Rb1+–) 11.a4 e6 (11...Ngf6 12.a5 Bg6 13.b6 ab6 14.Nb5+–) 12.a5 Qd6 (12...Kb8 13.b6! ab6 14.Nb5+–) 13.a6 b6 (13...Qb6 14.Ra4+–) 14.Ng5 Be2 (14...Bg6 15.Bh5 Bh5 16.Qh5+–) 15.Qe2 (worse 15.Ne2 Nh6+–) 15...Qe7 (15...Nh6 16.Qf3 Qc7+–) 16.Qf3 Nb8 17.Nf7 Nf6 (17...Nh6 18.Nh8 Rd7 19.Ne2+–) 18.Nh8 (18.Nh8 Rd7 19.Ne4+–) 1–0. Lavendel – Dupek, internet free game, 2018.

5.Be2 Nd7 6.h3 Bh5 7.Ne5 Ne5 8.Bh5 (8.Be5 Qd5 9.Bf4 Qg2–/+) 8...g6? (better 8...Qd6+–) 9.Be5+– f6 10.Bf4?? (10.Bf3 fe5 11.Bb7 Rb8 12.Bc6 Kf7+–) 10...Bg7? (better 10...Qd4 11.Bf3 Qa1 12.Bb7 Rb8 13.Bc6 Kf7+=) 11.Bf3+– e5 (11...Qd4 12.Bc7 Qa1 13.Bb7+–) 12.Bg3 (12.Be3 c6+–) 12...Ne7 13.Bb7 Rb8 14.Qf3 0–0 (14...Qd7 15.Nc3 c6 16.Ba6 Rb4 17.0–0+–) 15.a3 (15.Nc3 f5 16.Bd5 Kh8+–) 15...Qd4 (15...f5 16.d4! e4 17.Qb3 Kh8 18.Ba6 Qd4 19.c3+–) 16.c3 (16.Nc3 Kh8+–) 16...Qd6 17.0–0 f5 (17...Rbd8 18.Re1 Qb6+–) 18.Ba6! Qa6 19.d4! e4 (19...ed4 20.Bc7 Pinning (20.Bc7 Deflection)) 20.Qe3 (20.Qd1!? f4 21.Bh4+–) 20...Nd5 (20...f4!? 21.Bf4 Nd5 22.Qe4 Nf4=) 21.Qe1+– Qd3 (21...Rbe8 22.Be5+=) 22.a4 (better 22.Be5!?+–) 22...f4= 23.Bh2 Rbe8 (23...f3 24.Qd1=) 24.Qc1 Bh6 (24...f3 25.g4=) 25.Ra3+– Re6?? (better 25...Qc4+–) 26.c4+– Qd4 27.cd5 Qd5 28.Nc3 (28.Qc7 Bg7+–) 28...Qh5 (28...Qc4 29.Qb1+–) 29.Qd1 (29.Nb5 Rff6+–) 29...Qe5 (29...Qd1 30.Rd1 Rd8 31.Ra2+–) 30.Qb3 Kh8 31.Nb5 (31.Re1 Qf5+–) 31...a6 (31...c6 32.Nc3+–) 32.Nc7! Qc7 (32...Rc6 33.Nd5 Rd8+–) 33.Qe6 Qg7 (33...Qb7 34.Rb3 Qf7 35.Qf7 Rf7 36.b5 ab5 37.ab5+–) 34.Qe4 Qb2 (34...Qd7 35.Rd1+–) 35.Qd3 (35.Rd3 Qf6+–) 35...Bg7 (35...Qb4 36.Rb1 Qa5 37.Qc3 Qc3 38.Rc3+–) 36.Re1 (36.Rb1 Qf6+–) 36...Qb4 37.Re4 Qb8 38.Rb3 Qa8 39.Bf4 Qc8 (39...Qc6 40.Qc4 Qf6 41.Rb7+–) 40.Be5 (40.Rb6 Qc1 41.Kh2 Qc5+–) 40...Qc1 (40...Be5 41.Re5 Qc1 42.Qf1 Qf1 43.Kf1+–) 41.Kh2 (better 41.Qf1 Qf1 42.Kf1 Be5 43.Re5+–) 41...Qc8 (41...Be5 42.Re5 Qc7+–) 42.Bg7 Kg7 43.Re7 Kg8 44.Rbb7 (44.Qd5 Qe6 45.Qe6 Kh8 46.Qe5 Kg8 47.Qg7) 44...Qf5 (44...Rf6 45.Qd5 Re6 46.Qe6 Qe6 47.Rb8 Qc8 48.Rc8) 45.Rg7 Kh8 46.Rh7 Kg8 47.Rbg7 1–0. allanchessw (1705) – knight_01, gameknot.com, 2017.

5.Be2 e6 6.0–0 Nd7 7.h3 Bh5 8.a3 Ngf6 9.Ng5 Be2 10.Qe2 Be7 11.Ne6 (better 11.Qf3!?+–) 11...fe6= 12.Qe6 Rf8 13.Re1 a5 14.Bc3 (14.Nc3 Ra6 15.Qb3 ab4 16.ab4 Ra1 17.Ra1 Nb6+=) 14...c5 (14...Rf7 15.ba5 Nc5 16.Qc4=) 15.bc5 (15.Bf6 gf6 16.ba5 Ne5+=) 15...Ra6 (15...Nc5 16.Qc4 Ncd7 17.Bf6 Nf6 18.Nc3+=) 16.Qc4+= Nc5?? (better 16...Rf7+=) 17.Qc5+– Rc6 (17...Kf7 18.Qb5 Qc7 19.Ra2+–) 18.Qb5 Qc7 (18...Qd7 19.Qa5 Kf7 20.Qa4+–) 19.Ba5 b6 (19...Qd7 20.Nc3 Rf7 21.Rab1+–) 20.Re6 Kd7 21.Bb6 Qb6 (21...Rb8 22.Rc6 Qc6 23.Qc6 Kc6 24.Bd4+–) 22.Qb6 Rb6 23.Rb6 Bc5 (23...Nd5 24.Rb5 Kc6 25.c4+–) 24.Rb7 Kc6 25.Rg7 Ne8 (25...Bf2 26.Kh2+–) 26.Rh7 Bf2 (26...Rf2 27.Kh1 Rf1 28.Kh2 Bd6 29.g3 Rf2 30.Kh1 Bg3+–) 27.Kh2 Bd4 28.Nc3 Be5 29.Kh1 Nd6 30.Rh6 (30.Re1 Bg3 31.Rb1 Be5+–) 30...Kd7 (30...Rf2 31.Ne4 Re2+–) 31.Rh7 Kc8?? (31...Kc6 32.Re1 Bg3+–) 32.g4+– Bg3 (32...Bc3 33.dc3 Nb5 34.a4 Nc3 35.a5+–) 33.Kg2 Be5 34.Rb1 Ne8 (34...Rf7 35.Rf7 Nf7 36.h4+–) 35.Nd5 Bd6 36.Nb6 Kd8 37.Rd7 1–0. DEFFM – GuestFTBK, freechess.org, 2018.

5.Be2 Bf3 6.Bf3 c6 7.0–0 Nf6 8.b5! e6 (8...cb5 9.Bb7 Pinning (9.Bb7 Deflection)) 9.Na3 Ba3 10.Ba3 Nd5 (10...Qd7 11.bc6 Nc6 12.Rb1+–) 11.Rb1 (better 11.Re1 Ne7 12.Rb1+–) 11...b6 (11...Qd7+–) 12.bc6 Nc6 (12...Na6 13.Qe2 Nac7 14.c4+–) 13.c4 Nf4 (13...Nde7 14.Be7 Ne7 15.Ba8 Qa8 16.Qa4 Qc6 17.Qa7 Qd7 18.Qd7 Kd7 19.Rb6 Ra8 20.Rb7 Ke8+–) 14.Bc6 (14.Bc6 Qd7 15.Bd7 Kd7 16.Qf3+–) 1–0. GuestGBJY – GuestTRSG, freechess.org, 2020.

5.Be2 Nf6 6.0–0 Nbd7 7.h3 Bh5 8.g4 (8.Na3 e6 9.c3 Bd6+–) 8...Bg6+– 9.Ne5 (9.Nc3 e6 10.b5 Bd6+–) 9...Ne5 10.Be5 e6 11.Bf3 c6 (11...Nd7 12.Bg3 Bb4 13.h4+=) 12.b5! Nd7 (12...cb5 13.Bb7 Pinning (13.Bb7 Deflection)) 13.Bb2 (better 13.Bg3!?+–) 13...cb5 (13...h5 14.bc6 bc6 15.Re1=) 14.Bb7 Rb8 15.Bc6 (15.Bg2 Qc7 16.Nc3 h5+=) 15...Qc7 (15...h5 16.Re1=) 16.Qf3= Bd6 (better 16...h5!? 17.g5 Rb6 18.Bd7 Qd7 19.Qa8 Qd8 20.Qd8 Kd8+=) 17.Bg7+– (17.Bg7 Rg8 18.Bf6+–) 1–0. GuestQTFF – GuestHBQJ, freechess.org, 2020.

5.h3 Bf3 6.Qf3 c6 7.Na3 Na6 8.b5 Nb4 9.bc6 Nc2?? 10.Nc2+– bc6 11.Qc6 (11.Qc6 Qd7 12.Qa8 Qd8 13.Qa7+–) 1–0. pierre – Bob_wins_again, internet, 2011.

5.h3 Bf3 6.Qf3 c6 7.c4 Qb6 8.a3 Nd7 9.Nc3 e6 10.Be2 Nh6 11.0–0 Nf5 12.c5 Nc5 13.bc5+– Qb2 14.Ra2 Qa2 15.Na2 Bc5 16.Rb1 Rb8 17.Qc6! bc6 18.Rb8 Ke7 19.Rh8 Ba3 20.Rh7 Nd4 21.Nc3 Bb4 22.Bh5 Kf6 23.Ne4 Ke5 24.Bf7 Nb3 25.Rg7 Bd2 26.Nd2 Nd2 27.Rg6 a5 28.Re6 Kd4 29.Rc6 Kd3 30.h4 (30.h4 Ne4 31.Ra6+–) 1–0. Pogrzeba,G – Fischer,C, freechess.de (year?).

3.Nf3 Qd6

4.a3 Bd7 5.Bd4+– Nc6 6.Bb2 e5 7.e3 (7.b5 Nd4 8.e3 Nf3 9.Qf3 c6+–) 7...f6 (7...e4 8.Nd4 0–0–0 9.d3+–) 8.Be2 Be6 9.c4 Nge7 (9...0–0–0 10.d4 ed4 11.ed4+–) 10.0–0 (10.d4 ed4 11.ed4 Bf5+–) 10...Qd7 (10...e4 11.Nd4+–) 11.Nc3 (11.d4 ed4 12.ed4 Bg4+–) 11...Nf5 12.Qc2 Bf7 13.Rfd1 0–0–0 14.d4! g6? (14...ed4 15.Nb5 Decoy) 15.Ne4 (better 15.de5!? Qe6 16.Rd8 Kd8 17.Rd1 Kc8 18.ef6 Rg8+–) 15...ed4 16.Nf6 Qe6 17.ed4 Qf6 18.d5 Qd6 (18...Ncd4 19.Nd4 Bg7+–) 19.Bh8 (19.dc6 Qc6 20.Rd8 Kd8 21.Bh8 Kc8+–) 19...Bh6 (19...Nb8 20.c5 Qf4 21.Be5+–) 20.dc6 Qc6 21.Rd8 Kd8 22.Ne5 Qe6 (22...Qe8 23.Bf6 Kc8 24.Rd1+–) 23.Nf7 (23.g4 Nh4 24.Rd1 Ke8+–) 23...Qf7 24.Rd1 Kc8 25.Bg4 b6 (25...Qe6+–) 26.Qe4 Bg5 (26...Bd2 27.Qa8 Kd7 28.Rd2 Qd5 29.Qd5 Ke7 30.Qe5 Kf7 31.Qf6 Ke8 32.Rd8) 27.Qa8 1–0. GuestCTHG – GuestJJJJ, freechess.org, 2017.

4.b5 Qb4 5.Bd4+– Qb5 6.e3 (6.Nc3 Qa5+–) 6...Qd7 (6...Qa5 7.Ne5+=) 7.c4 (7.Ne5!? Qd8 8.Nc3+=) 7...f6 (7...Nc6 8.Bc3+=) 8.Be2 (8.Bc3 e5+=) 8...e5= 9.Bb2 Qe6 (9...e4 10.Nd4=) 10.Qc2 (10.d4 e4 11.Nfd2 f5+=) 10...Nc6= 11.a3 (11.0–0 e4 12.Nd4 Nd4 13.Bd4 c5+=) 11...Bd7 (11...e4 12.Nd4 Nd4 13.ed4=) 12.Nc3 (12.d4 ed4 13.ed4 Qf5 14.Qf5 Bf5+–) 12...0–0–0 13.Rb1 Na5 (13...Nge7 14.Ne4+=) 14.Nd5 c6 (14...Nc6 15.d4+=) 15.0–0 (15.d4 Kb8 16.Qc3 b6+=) 15...Kb8 (15...g5 16.d4 g4 17.Nd2+–) 16.Nb4 (16.Bc3 Nc4 17.Nf4 ef4 18.Bc4 Qe7+–) 16...c5+= 17.Nd5 Bc6 (17...e4 18.Ne1+–) 18.e4 Ne7? (better 18...Bd7!?+–) 19.Bc3+– Bd5?? (19...Nc4 20.Bc4 Nd5 21.Rfc1+–) 20.Ba5 (better 20.cd5 Qd6 21.Ba5 b6+–) 20...Be4 21.Qe4 Nc6 (21...b6+–) 22.Bd8 f5 (22...Nd8 23.d4! cd4 24.Nd4+–) 23.Qd5 (better 23.Qh4 e4+–) 23...Qd5 24.cd5 Nd8 25.Ne5 Bd6 26.Nc4 Bf4 (26...Kc7 27.Rfc1 Re8 28.Bf3+–) 27.Bf3 (27.Rfc1 Kc7+–) 27...Kc7 28.g3 (better 28.Rfe1 Bd6+–) 28...Bh6 (28...Bd6 29.Rfc1 Kd7 30.Bd1+–) 29.Rfe1 (better 29.d6 Kd7 30.Rfe1 Bg5 31.Bb7 Nf7+–) 29...g6 (29...Kd7 30.d6 Bg5+–) 30.Re7 Kb8 31.Nd6 (31.d6 Rg8 32.Rbb7 Nb7 33.Rb7 Kc8 34.Ra7 Kd8 35.Ne5 Bd2 36.Ra8) 31...b6 (31...Bg5 32.Rd7 b6 33.d4 cd4 34.Rb4+–) 32.Nb5 Nb7 (32...Bf8 33.Ra7 Bd6+–) 33.d6 a6 (33...Bg5 34.Rb7 Kc8 35.Na7 Kd8 36.Bc6 Bd2 37.Rb8) 34.Rb7 Kc8 35.Na7 Kd8 36.Nc6 (36.Bc6 Bd2 37.Rb8) 36...Kc8 (36...Ke8 37.d7 Kf7 38.d8Q Ke6 39.Bd5) 37.Ne7 (37.Rc7) 37...Kd8 38.Bc6 Bg5 (38...Bd2 39.Rb8) 39.Rb8 1–0. DEFFM – GuestJQGC, freechess.org, 2016.

4.Bd4 Nc6 5.Bc3 (5.Bc5!? Qf6 6.Nc3+/–) 5...Nb4+= 6.Bb4 (6.e4 Nc6+=) 6...Qb4= 7.a3 (7.Nc3 Nf6=) 7...Qa5 8.e3 (8.e4 c6=) 8...e6 (8...e5 9.Bc4+=) 9.Be2= b6 (9...e5 10.0–0=) 10.0–0 Bb7 11.d4 Nf6 12.Qd2 (12.c4 Bd6=) 12...Qd2 13.Nbd2 Ne4 (13...Rc8 14.c3=) 14.Ne4 Be4 15.c4 (15.Ng5 Bb7=) 15...Bd6 (15...c5 16.Rfd1=) 16.Nd2 Bc6 17.Bf3 Bf3 18.Nf3 a6 (18...c5 19.d5=) 19.a4 (19.e4 Rd8=) 19...0–0 (19...Ke7 20.Rfb1=) 20.Rfc1 (20.Rfb1 a5=) 20...c6 21.c5 bc5 22.dc5 Be7 23.Nd4 Rfc8 (23...Bf6 24.Rab1 (24.Nc6?! Ba1 25.Ra1 Rfe8+=) 24...Bd4 25.ed4+=) 24.Rab1 Rab8? (better is 24...Bf6!?+=) 25.Rb8+– Rb8 26.Nc6 Rb7 27.Ne7 Re7 28.Kf1 Kf8 29.Ke2 Ke8 30.f4 (30.e4 e5+–) 30...Kd7 31.Kd3 (31.Rd1 Kc6 32.Rd6 Kc5 33.Ra6 e5 34.fe5 Kb4+–) 31...Kc6+/– 32.Kc4 Rb7 33.g4 (33.Rd1 a5 34.Rd6 Kc7+/–) 33...Rb2 (33...a5 34.Kd3=) 34.h4+= Rh2 (34...a5 35.Kd3+=) 35.g5 (35.h5+/–) 35...Rh4 (better is 35...e5!? 36.Rf1 h5+=) 36.Rb1 Kc7 37.Kd4 (37.Rb6 e5 38.Ra6 ef4 39.ef4 Rf4 40.Kb5 Kb8+/–) 37...f6? (better is 37...h6!? 38.gh6 g5+=) 38.gf6+– gf6 39.Rb6 e5 40.Ke4 ef4 41.ef4 (41.Ra6?! f5 42.Kf3 fe3 43.Ke3 h5=) 41...Rh5 42.Ra6 (42.Rf6 Rc5 43.Ra6 Rc4 44.Ke3 h5+–) 42...Rc5+/– 43.Rf6 h5 44.Rh6 (44.Rf5 Rc4 45.Kf3 Rc3 46.Kg2 h4+/–) 44...Rc4 (44...Ra5!?+/–) 45.Kf5+– Ra4 46.Rh5 Kd6 (46...Kd7 47.Kg5+–) 47.Rh6 (47.Rh7 Rd4+–) 47...Kd7 48.Kg5 Ke7 49.f5 Ra2 50.Rh7 Kf8 51.Kg6 Rg2 52.Kf6 Kg8 53.Rd7 Rf2 54.Rd8 Kh7 55.Rd5 Kg8 56.Ke6?? (56.Rd1 Rf3+–) 56...Kf8?? (56...Re2 57.Kd6=) 57.Kf6 Ke8?? (57...Kg8 58.Rd6 Rf1+–) 58.Re5 Kf8 59.Ra5 Kg8 60.Kg6 (60.Ra8 Kh7+–) 60...Kf8 (60...Rg2!? 61.Kh5 Kf7+/–) 61.Ra8+– Ke7 62.Ra7 Kf8 63.Rf7 Ke8 (63...Kg8 64.Rc7 Kf8 65.Kf6+–) 64.Rh7 (64.Kg7 Rg2 65.Kf6 Ra2+–) 64...Kf8 65.f6?? (better is 65.Kf6 Kg8 66.Rb7+–) 65...Rg2= 66.Kf5 Rf2 ½–½. hal1958 – O_Man, playchess.de, 2003.

4.Nd4 e5 5.Nb5+= Qb6 6.e3 a6 7.Qh5 (better is 7.N5a3!? Nd7 8.Nc4 Qb4 9.Be5 Ne5 10.Ne5+=) 7...ab5=+ 8.Qe5 Be6 9.Bd4 Qd6 10.Qd6 cd6 (10...Bd6?? 11.Bg7 c6 12.Bh8 Bb4 13.a3+–) 11.Bb5 Bd7 12.Nc3 d5 (better is 12...Nc6 13.Bc6 Bc6=) 13.Nd5+– Kd8 14.Bb6 Kc8 15.Ba5 Ra5 (15...Bc5 16.c4 Ne7 17.bc5 Nd5 18.Bd7 Nd7 19.cd5 Ra5+=) 16.Bd7 Kd7 17.ba5 Kc6 18.c4 Bd6 19.Rb1 Nd7 20.d4 h5 (20...Ne7 21.Nc3 Nc8 22.Nb5+–) 21.e4 f6 22.Ke2 h4 23.Rb3 Nh6 24.c5 Bb8 25.Rhb1 Re8 26.Kd3 Ng4 27.Rb6 Nb6 28.Rb6 Kd7 29.Rb7 Kc8 30.c6 Nf2 31.Kc4 Bh2 32.Nb6 Kd8 33.Rd7 1–0. Borrmann,Fritz – Kientzler, CiF, 1989.

4.Bd4 Qb4

5.a3 Qa5 +=.

5.a3 Qc4 6.e3+– Qd5 7.c4 (7.Ne5 e6+–) 7...Qa5 (7...Qd8 8.c5+=) 8.Bc3+– Qc5 9.d4 Qh5 10.Be2 c5 (10...Qg6 11.0–0+–) 11.Ne5 Qg5 12.0–0 cd4 13.Bd4 f6 14.Qa4 Bd7? (better 14...Nd7!? 15.f4 Qh6+–) 15.Nd7+– Nd7 16.Bf3 (worse 16.Ba7 Qe5 17.c5 f5+–) 16...e5 17.Bb2 (better 17.Bb7!? Rb8 18.f4 Qh4+–) 17...Bc5 18.Bb7 Rb8 19.Qc6 (better 19.Bc6 Qg4 20.Rd1+–) 19...Ne7+= 20.Qc7?? (20.Qb5 Nf5 21.Qc6 Nd6=) 20...Rd8?? (20...Bb6 21.Qd6 Rb7 22.Qd2–+) 21.Rd1?? (21.Qa5 Rb8 22.Qa6 Be3=) 21...Qf5?? (better 21...Bb6!? 22.Qd6 Nc5 23.Bc6 Kf7 24.Bd5 Nd5 25.Qd5 Rd5 26.cd5 Na4–+) 22.Nc3?? (22.Bc6 Bb6 23.Qb7 Nc6 24.Qc6 0–0+–) 22...Qc2?? (22...Bb6 23.Be4 Bc7 24.Bf5 Nf5–+) 23.Rab1?? (better 23.Bc6 Nc6 24.Qc6+–) 23...Ba3?? (23...Bb6 24.Qd8 Kd8 25.Ba1–+) 24.Rd7 (better 24.Ba3 Qc3 25.Qd6+–) 24...Rd7–+ 25.Qb8 (25.Bc6 Nc6 26.Qc6 Bb2 27.Rd1–+) 25...Kf7 26.Bd5 Nd5 (better 26...Rd5 27.Rc1 Qc3 28.Bc3 Rb8–+) 27.cd5 (27.Qb5 Nc3 28.Qd7 Be7–+) 27...Bb2 (better 27...Rb8 28.h3 Rb2 29.Rb2 Bb2–+) 28.Qb2 Qf5 (better 28...Qb2 29.Rb2 Rc8–+) 29.e4–/+ (29.e4 Qg4 30.Qa2–/+). GuestBVDJ – GuestNMBN, freechess.org, 2017.

5.a3 Qd6 6.Be5 Qc6 (6...Qd8 7.e4+=) 7.Nc3 Nd7 8.e4 a6 9.Be2 (9.Bd4 Ngf6 10.Bd3 Nc5+=) 9...Ne5 (9...Ngf6 10.Bg3+=) 10.Ne5 Qh6 11.d4 (11.Bh5 Be6+=) 11...Nf6 12.0–0 c6 (12...e6!?+=) 13.Qd3+/– g6 (13...Qf4!?+/–) 14.Na4+– Bg4?? (better is 14...Nd7 15.Nd7 Bd7+–) 15.Ng4 Ng4 16.Bg4 e6 (16...Bg7 17.Nc5 Rd8 18.c3+–) 17.Qb3 b5 (17...Bg7 18.Qb7 0–0 19.Rad1+–) 18.Be6! ba4 (18...fe6 19.Qe6 (19.d5)) 19.Bf7 Kd8 20.Qb6 (20...Kd7 21.Qb7 Kd8 22.Qa8 Kc7 23.Qa7 Kd8 24.Qb8 Ke7 25.Qc7 Kf6 26.e5 Kg5 27.f4 Kh5 28.Qd7 Qg5 29.Qh3 Qh4 30.g4 Kh6 31.Qh4 Kg7 32.Qf6 Kh6 33.Bg6 hg6 34.Qh8) 1–0. pierre – timelord, internet, 2006.

5.c3 Qb2 6.c4 +=.

5.Bc3 Qd6 6.g3 Be6 7.Be5 Qc6 (7...Qd7 8.Bg2=) 8.Bg2 (8.Nc3 Nd7 9.e4 A) worse 9...Ne5 10.Bb5 (10.Ne5?! Qd6 11.f4 Nf6+=) 10...Bg4 11.Ne5 Bd1 12.Kd1+–; B) 9...a6=) 8...Nd7 9.0–0 f6 (9...Ne5 10.Ne5 Qb5 11.d4+=) 10.Bf4 (10.Nd4 Qc5 11.Ne6 Qe5+–) 10...Bd5 (10...0–0–0 11.Nd4 Qc4 12.Ne6 Qe6 13.Nc3+–) 11.Nc3 Bf3 (better 11...Nb6!? 12.Nd4 Qd7+–) 12.Bf3+– (12.ef3?! e5 13.Be3 f5+=) 12...Qf3?? (12...Qc4 13.Bb7 Rb8+–) 13.ef3 1–0. Janek – yxdjango, internet, 2017.

5.Nc3 c6 6.Rb1 Qa5 7.e4 e6 8.Be2 Nd7 9.0–0 (9.Rb3 e5 10.Be3 Ngf6=) 9...Ngf6 (9...e5 10.Be3=) 10.h3 (10.e5!? Ng4 11.Re1=) 10...e5+= 11.Be3 Bb4 12.Qc1 (12.Bd3 Bc3 13.dc3 0–0+=) 12...Bc3–/+ 13.dc3 Qc3 (13...Ne4 14.Bd3 Nef6 15.Re1–/+) 14.Rd1 (better is 14.Bd2!? Qc5 15.Bb4=) 14...Ne4–/+ 15.Rb3 Qa5 16.Bd3 Nec5 17.Ra3 (17.Bc5 Nc5 18.Ra3 Nd3 19.Rdd3 Qc7 20.Ne5 0–0–/+ (worse is 20...Qe5 21.Re3 Qe6 22.Re6 fe6 23.Qf4+–)) 17...Qc7 (17...Nd3 18.cd3 Qd5 19.Ba7–/+) 18.Be2 (18.Bc5 Nc5 19.Ne5 0–0–/+ (worse is 19...Qe5 20.Re1 Nd3 21.cd3 Qe1 22.Qe1 Be6 23.Qb4+/–)) 18...b6 19.c4 (19.Bc5 Nc5 (19...bc5?! 20.Qg5 0–0 21.Qe7=) 20.Ne5 Qe5–/+) 19...0–0–+ 20.Nh2 (20.Qd2 Ne6–+) 20...Ne4 21.Qc2 Ndf6 22.Bd3 Bf5?? (better is 22...Qe7 23.Rb3 Nc5 24.Bc5 Qc5–+ (worse is 24...bc5 25.Be4–/+)) 23.f3+= Rad8 24.fe4 Be4 25.Re1 (25.c5 Rd3 26.Rad3 Nd5=) 25...Bd3 (25...Qd6!? 26.Be4 Qa3 27.Bc6 Rc8–/+) 26.Rd3= Rd3 27.Qd3 Rd8 (27...Re8 28.Bg5 Nd7 29.Ng4=) 28.Qe2 (better is 28.Qf5 Re8 29.Bg5=) 28...c5 (28...Ne4 29.Qg4 Nf6 30.Qf5+=) 29.Rd1 (better is 29.Bg5!?+/–) 29...e4 30.Rd8 Qd8 31.Nf1 (31.Ng4 Qd6=) 31...Qd6 (31...Qd3 32.Kf2=) 32.Qd2 (32.Qf2 h6=) 32...Qc7 (32...Qd3 33.Qc1=) 33.Bf4 Qc8 (33...Qe7 34.Ng3=) 34.Qd6 (34.Ng3+=) 34...Nd7 (34...h6 35.Bh6 Ne8 36.Qg3+=) 35.Qc7 (better is 35.Qe7+/–) 35...Qc7= 36.Bc7 Nf8 (better is 36...f5!?=) 37.Bb8 a6 38.Ba7 (38.Ng3 e3+/–) 38...Nd7+= 39.Ne3 (39.Ng3 Kf8+=) 39...b5= 40.a3 (40.cb5 ab5 41.Nf5 g6+=) 40...Kf8 (40...b4!? 41.ab4 cb4+=) 41.cb5= ab5 42.Nd5 (42.Nf5!?=) 42...f5+= 43.Nc7 b4 44.ab4 cb4 45.Bd4 b3 46.Ne6 Kf7 47.Ng7 f4 (47...Kg6 48.Ne6=) 48.Nh5+/– f3 (better is 48...Nb6 49.Nf4 Nc4+/–) 49.g3?? (better is 49.gf3 ef3 50.Nf4+–) 49...Nc5 50.Nf6 (50.Bc5 b2 Passed pawn) 50...e3 0–1. zabazaba (1650) – baldvin2 (1775), gameknot.com, 2013.

5.Nc3 Nc6 6.Rb1 Qc4? 7.e4+– Qe6 8.Be3 Bd7? (8...Nf6 9.Nb5 Qd7+–) 9.Rb7 Nf6 (9...Rb8 10.Nd4 Rb7 11.Ne6 fe6+–) 10.Ng5 Qd6 (10...Qg4 11.Be2 Qg2+–) 11.Nb5 Qe5 (11...e5 12.Bc4 Nd8 13.Nd6 Bd6 14.Rb3+–) 12.Nc7 Kd8 (12...Qc7 13.Rc7 a6+–) 13.Nf7 Kc8 14.Ba6 Ne4 15.Qb1 1–0. pcmvr (2830) – onamb (1800), net–chess.com, 2014.

5.Nc3 Nc6 6.Rb1 Qd6 7.Nb5 +=.

5.Nc3 Nc6 6.Rb1 Qd6 7.e3 Nd4 8.ed4 Nf6 +/–.

5.e3 Nc6 6.a3 Qd6 7.Bb5 Bd7 8.0–0 (8.Bc6 Qc6 9.Nc3 f6=) 8...Nd4 9.Bd7 Qd7 10.ed4 e6 11.c4 Nf6 12.Nc3 Be7 13.Rb1 (13.Qb3 b6=) 13...b6 14.d5 0–0 (14...Ba3 15.Ne5 Qd6 16.Qa4 c6 17.Nc6+–) 15.Ne5 (15.de6 fe6 16.Rb3 Rad8=) 15...Qd8 16.de6 fe6 17.Nc6 Qd6 18.Ne7 Qe7 19.Re1 Qa3 20.Re6 Qc5 21.d3 (21.Qe2 a5=) 21...Rfe8 (21...Ng4 22.Ne4 Qf5 23.Re7 Nf2 24.Qf1 Ne4 25.Qf5 Rf5 26.de4–/+) 22.Qe2 Re6 (22...c6 23.Re3=) 23.Qe6 Kf8 24.Ne4 Ne4 (24...Qe7!? 25.Qf5 Re8=) 25.Qe4+– (25.de4?! Re8 26.Qd5 Qd5 27.ed5 Ke7=+) 25...Re8 26.Qh7 Re2 (26...Qa5 27.Rf1+–) 27.Qh4 (27.Qh8 Kf7 28.Rf1 a5+–) 27...Qe5 28.Kf1 Rd2 (better 28...Ra2+–) 29.Re1+– Qf6 (29...Qd6 30.Qh8 Kf7+–) 30.Qh8 Kf7 31.Qe8 1–0. DEFFM – GuestZXLX, freechess.org, 2018.

5.e3 Nc6 6.Bc3 Qd6 7.Be2 Nf6 8.0–0 e5 9.Bb5 Bd7 (9...e4!? 10.Ne5 Rb8=) 10.Bc6+/– Bc6 11.Ne5 Be7 12.Bd4 0–0 13.Nc6 Qc6 14.d3 Rad8 15.Nd2 Rfe8 16.Qb1 Nd5 17.Nf3 Nc3 (17...Bf6 18.Bf6 Nf6 19.Nd4+/–) 18.Bc3 Qc3 19.Qb7 Bf6 20.Qa7 Qc2 21.d4 Ra8 22.Qb7 Reb8 23.Qd5 Rd8 (23...c6 24.Qd6 c5 25.Rfc1+– (< 25.Qc5 Qc5 26.dc5 Ba1 27.Ra1 Ra2=+)) 24.Qb3 Qe4 25.Rfc1 Qe7 26.Rc4 Rdb8 27.Qc2 Rb7 28.a4 Rba7 29.h3 g6 30.Qc3 Ra5 31.Rc7 Qe6 32.Rc6 Qe8 33.Rf6 Ra4 34.Ra4 Qa4 35.Qc7 Ra7 36.Qd8 Kg7 37.Ng5 Qb4 38.Rf7! Rf7 39.Ne6 (39...Kh6 40.Qg5) 1–0. pierre (2145) – rla, internet, 2007.

5.e3 f6 6.Bc3 Qd6 7.Nd4 (7.d4 Bg4+=) 7...Bd7 (7...e5 8.Nb5 Qc6 9.d4=) 8.Bd3 e5 9.Nb3 b6 (9...Be6 10.Be4 Nc6 11.Bb2=) 10.Qh5+= Kd8 11.a3 Be8 12.Qf3 Bc6 13.Qg3 a5 14.0–0 a4? (14...Nh6 15.f3=) 15.Nc1?? (15.Bb4 Qd5 16.Bf8 ab3 17.cb3 g5+–) 15...h5?? (better is 15...e4 16.Qd6 Bd6=) 16.Bb4+– Qd7? (better is 16...h4 17.Qh3 Qd7 18.Bf8 Qh3 19.gh3 Ne7 20.Be7 Ke7+–) 17.Bf8 e4 18.Bc4 (18.Bg7?! Rh7 19.Bf6 Nf6+–) 18...Qd2 (18...g5 19.h3 Nh6+–) 19.Nd2 (19.Nd2 g5 20.Ne2+–) 1–0. mikebaldini (1740) – ghham (1610), gameknot.com, 2014.

5.Be5 Qa5 +=.

4.Nd4 Qb4=

5.Bc3 Qc5 6.e3 a6 7.Be2 Bf5 (7...e5!? 8.Nb3 Qd6=) 8.Bf3 c6 9.Nf5 Qf5 10.d4 Nf6 11.Nd2 e6 12.Bb2 Bb4 13.c3 Ba5 14.0–0 Qd3 (14...0–0 15.e4 Qg6 16.Nc4+=) 15.Be2 (15.e4!? Qb5 16.Rb1+–) 15...Qg6+= 16.Nc4 Bc7 17.Ba3 Nd5 18.Qb3 b5 19.Nd6 Bd6 20.Bd6 Nd7 21.c4 f6?? (better is 21...N5b6+/–) 22.cd5+– (22.cd5 cd5 23.a4+–) 1–0. algernon (2495) – bonaparte (2215), net–chess.com, 2016.

5.Bc3 Qd6 6.e3 Nf6 7.Be2 e6 8.0–0 Nc6 (8...a6 9.d3=) 9.Bb5 Bd7 10.Bc6 Bc6 11.Nc6 Qc6 12.d3 Be7 13.Nd2?? (13.e4 0–0=) 13...0–0 (better is 13...Qc3 14.Rb1 Rb8–+) 14.Bb2 Nd5 15.c4 Nf6 16.Nf3 Ne8 (16...Rfd8 17.Rb1=) 17.Nd4 (17.Ne5 Qd6+=) 17...Qd7= 18.Qb3 b6 19.Ba3 Ba3 20.Qa3 c5 21.Nf3 Nf6 22.Rfd1 Rfd8 23.d4 cd4 24.Nd4?? e5–+ 25.Qb3 ed4 26.Rd4 Qc7 27.Rad1 h6 28.Rd8 Rd8 29.Rd8 Qd8 30.h3 Qd6 31.Qb2 Qc5 32.Qc2? b5 33.Kf1 Qc4 34.Qc4 bc4 35.Ke1 Nd7 36.Kd2 Nb6 37.Kc3 Kf8 38.a4 a5 39.e4 Ke7 40.f4 Na4 41.Kc4 Nb6 42.Kb5 a4 43.g4 g6 44.h4 a3 0–1. Valpa – Sjurdur_T, playchess.de, 2002.

3.Nf3 e5

4.a3 (--> 1.b4 e5 2.a3 d5 3.Bb2 d4 4.Nf3).

4.a3 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 d4).

4.a3 f6 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.Nf3 d4).

4.a4 (--> 1.b4 d5 2.a4 e5 3.Bb2 d4 4.Nf3).

4.b5 (--> 1.b4 e5 2.b5 d5 3.Bb2 d4 4.Nf3).

4.c3 f6 5.Qc2 Bg4 (5...dc3!? 6.dc3 a5=) 6.Nd4+= c5 (6...ed4 7.Qe4 A double attack) 7.bc5 Bc5 8.Nb3 Bb6 9.e3 Qd5 (9...Ne7 10.Bc4+/–) 10.c4 Qc6 11.a4 (11.d4 Nd7+/–) 11...Ne7 12.c5 (12.d4 Bf5 13.Qd2 0–0+/–) 12...Nd7+= 13.d4 ed4 14.Bd4 a6 (14...Bf5 15.Qd1 Bc7 16.f3+/–) 15.N1d2+/– Be6 16.Bd3 Bc7 17.e4 (17.Be4 Bd5+/–) 17...Be5 18.Bc4 Rc8 19.Be5 fe5 20.Rc1 Nc5 (20...Bc4 21.Qc4 Rd8 22.0–0+/–) 21.Nc5 White gets strong initiative 21...Qc5 22.Bb5! ab5 (22...Qb5 23.ab5) 23.Qc5 Rc5 24.Rc5 ba4 25.Re5 Kf7 26.Ra5 Rc8 27.Ke2 Bd7 28.Kd3 (28.Nf3 Ke8+–) 28...b5+/– 29.Nf3 Ng6 30.Kd4 (30.Rb1 Nf4 31.Kd2 Rd8+/–) 30...b4 31.Ra7 Ke8 32.Ne5 Ne5 33.Ke5 b3 34.Rd1 Rc5 ½–½. Budrewicz,H – Roczniak,Jan, corr Poland, 1967.

4.e3 Nc6 5.b5 Nb4 6.Ne5 de3 7.Qf3?? (better is 7.fe3!? Bf5 8.d3+=) 7...Nf6 (7...ed2 8.Nd2 A) < 8...Nc2 9.Kd1 f6 10.Kc2 fe5 11.Qh5 Kd7 12.Ne4+– (12.Be5?! Nf6 13.Qf7 Qe7 14.Qe7 Be7+=; 12.Qe5?! a6+/–); B) 8...Be6=) 8.Qe3?? (better is 8.Bc4 Be6 9.Be6 ef2 10.Qf2 fe6 11.Na3=) 8…Nc2–+ (9.Ke2 Ne3 10.de3 Be6–+) 0–1. gtate (1920) – vidyashankarh (2200), net–chess.com, 2003.

4.e3 de3 5.Be5 ef2 6.Kf2 =.

4.Ne5 Be6 5.b5 (5.Nf3 c5 6.bc5 Bc5 7.e3+–) 5...Qf6 (better 5...Nf6!?+=) 6.Bd4+– Bd6 (6...Nd7 7.Nf3 Qg6 8.e3+–) 7.Nf3 Qg6 (7...Qh6 8.Nc3+–) 8.e3 Nf6 (8...c5 9.Be5 Be5 10.Ne5+–) 9.c4 (9.Bd3 Qg2 10.Rg1 Qh3 11.Rg7 Nbd7+–) 9...c5 (9...Nbd7 10.d3+–) 10.bc6! Nc6 (10...bc6 11.Nc3 Combination; 10...Nc6 11.Nc3 Combination) 11.c5 (11.Nc3 Rc8+–) 11...Bc7 (11...Bf8 12.Nc3 Nd7 13.Rb1 Bc5 14.Bc5 Nc5 15.d4+–) 12.Qa4 (12.Nc3 Nd5+–) 12...0–0+– 13.Nc3 a6 (13...Rfd8 14.Bf6 Qf6 15.Rb1+–) 14.Rc1 (better 14.Rb1 Rab8 15.Bf6 Qf6 16.Ba6 ba6 17.Qc6 Qc3 18.dc3 Rb1 19.Kd2 Rh1 20.Qc7+–) 14...Bg4? (14...Nd7 15.Qc2 Qh5 16.Ne4+–) 15.Be2 (15.Bf6!? Bf3 16.Bg7 Kg7 17.gf3 Rfe8+–) 15...Bd7 (15...Nd4 16.Qd4 (16.ed4?! Rfe8+=; 16.Nd4?! Be2 17.Ke2 Qg2+–) 16...Rad8 17.Qb4+–) 16.Qc2 (16.Bf6 Qf6 17.Nd5 Qd8+–) 16...Bf5 (16...Qg2 17.Rg1 Nd4 18.Rg2 (18.ed4?! Qh3=) 18...Nc2 19.Rc2+–) 17.d3 (17.Qb2 Ra7+–) 17...Nb4 (17...Qg2 18.Rg1 Nd4 19.Rg2 (19.ed4?! Qh3=) 19...Nc2 20.Rc2+–) 18.Qb1 (18.Qb3 Nd3 19.Bd3 Bd3 20.Bf6 gf6 21.Qb7 Ba5+–) 18...Ba5 (18...Nd3 19.Bd3 Bd3 20.Qb7 Rfc8+–) 19.0–0?? (19.Nh4 Qg5 20.Nf5 Qf5+–) 19...Bh3? (better 19...Nd3 20.Qb7 Rfb8+–) 20.Ne1+– Nbd5 (20...Bc8 21.Bf3+–) 21.Bf3 (better 21.Nd5 Nd5 22.Qb7 Rad8+–) 21...Ne7 (21...Bc3 22.Bc3 (22.Rc3?! Nc3 23.Bc3 Bc8+–) 22...Nc3 23.Rc3+–) 22.Bf6 (22.Qb7 Nf5 23.Bf6 Qf6+–) 22...gf6 (22...Qf6 23.Ne4 (23.gh3?! Bc3 24.Qb7 Rab8+–; worse 23.Bb7 Rab8 24.Ne4 Qg6+–; 23.Qb7?! Bc3 24.gh3 Rab8+–) 23...Qg6 24.Qb7+–) 23.Ne4 (23.Qb7 Nf5+–) 23...Be1 (23...Rab8 24.Qb2 Nd5 25.Nd6+–) 24.Rfe1 (24.Qb7 Nf5 25.Rfe1 Nh4+–) 24...Nf5 (24...Rab8 25.Qb2 Kg7 26.Nd6+–) 25.Qb2 (25.Kh1 Nh4 26.gh3 Nf3+–) 25...Nh4 26.Nf6 Kg7 (26...Kh8 27.Nd7 Kg8 28.Be4 Nf3 29.Bf3 Bd7 30.Qb7+–) 27.Ne4 (better 27.Nd5 Kh6 28.Be4 Bf5+–) 27...f6 28.Ng3 (28.Qb7?! Rf7 29.Ng3 Rb7 30.Bb7 Ra7+=) 28...Nf3 29.gf3 Bf5 (29...Rab8 30.d4+–) 30.e4 (30.Qb7 Kh8 31.d4 Bd3+–) 30...Bd7 (30...Bc8 31.d4+–) 31.Kh1 (31.Qb7!? Qf7 32.c6 Be6+–) 31...Bc6 (31...Rab8 32.d4+–) 32.Rg1 Kh8 33.Nf5 Qh5 (33...Qe8 34.Nd6 Qd7 35.d4+–) 34.Rg3 Rg8 (34...Rad8+–) 35.Qf6 Rg7 36.Qg7 1–0. GuestTGGC – GuestQTRH, freechess.org, 2018.

4.Ne5 Bf5 5.a3 Nc6 6.Nc6+– bc6 7.e3 de3 8.fe3 (8.de3 Qd1 9.Kd1 Rd8 10.Nd2 c5 11.bc5 Nh6+–) 8...Qd5 (8...a5 9.ba5 Rb8 10.Bd4+–) 9.Qf3 (9.Nc3 Qe6+–) 9...Be4 (9...Bc2 10.Nc3 Qf3 11.gf3+–) 10.Qg3+– f5?? (10...Bg6+–) 11.Nc3 (better 11.d3 f4 12.de4 fg3 13.ed5 cd5 14.Bb5 Kf7 15.hg3 Rd8+–) 11...Qf7 12.Ne4 fe4 13.Be2 Nf6 14.0–0 Be7 15.Qe5 0–0 16.Qc3 Rae8?? (16...Qe8+–) 17.Bc4 Nd5 18.Rf7 Nc3 (18...Rf7 19.Qe5 Kf8+–) 19.Re7 Kh8 20.Re8 Re8 21.Bc3 c5 (21...h6 22.Rf1 Re7 23.Bd4+–) 22.Rf1 cb4 23.ab4 h6 24.Rf7 Kh7 25.Rg7 Kh8 26.Re7 1–0. FeegLood (2705) – navdanya (1640), lichess.org, 2015.

4.Ne5 Qg5 5.Nf3 Qf4 6.Bd4 (6.Nd4 Nf6 7.e3 Qh4+–) 6...Bg4 7.e3 Qe4 (7...Qh6 8.Bb5 Nc6 9.a3+–) 8.Bd3 Qe7 9.b5 Nf6 10.0–0 Nbd7 11.c4 g6 (11...Nc5 12.Bc5 Qc5 13.Be2+–) 12.Nc3 Bg7 13.Nd5 Bf3?! (13...Qd6+–) 14.Qf3 (14.gf3?! Nd5 15.Bg7 Rg8+–) 14...Nd5 (14...Ne5 15.Nf6 (15.Ne7?! Nf3 16.gf3 Ke7+–) 15...Bf6 16.Qb7+–) 15.Bg7 (15.Qd5?! Bd4 16.ed4 0–0–0+–; 15.cd5?! Bd4 16.ed4 0–0–0+–) 15...Rg8 16.Bb2 (16.cd5?! Rg7 17.d6 Qd6 18.Qb7 Rb8 19.Qe4 Kf8+–) 16...Nb4 (16...N5b6 17.Qb7 Nc5 18.Qc6 Qd7 19.Qc5 Qd3 20.Qe5 Kd8 21.Bd4+–) 17.Be4 (17.Bb1 Nb6 18.a3 Nc4 19.Qb7 Rd8+–) 17...c6 18.a3 f5 (18...Nc5 19.Bc6! (19.ab4?! Ne4 20.Rfd1 Ng5+–) 19...Nc6 20.bc6+–) 19.bc6 (better 19.Bb1 cb5 20.cb5+–) 19...fe4 20.cd7 Kd7 (20...Kd8 21.Qh3 Nd3+–) 21.Qh3 Kc7 22.ab4 Qb4 (22...h5+–) 23.Qh7 Kc6 24.Be5 Rac8 25.Rfb1 Qd2 26.Qb7 Kc5 27.Qb5 1–0. GuestWRSB – glebus, freechess.org, 2018.

4.c3 dc3

5.Bc3 e4 6.Ne5 =.

5.Bc3 f6 6.e3 Bg4 7.Be2 Ne7 8.Bc4 (better is 8.0–0=) 8...Nd7 (better is 8...Nd5!?=) 9.Ng5!+/– The mate threat is Bf7 9...fg5 10.Qg4 Eliminates the defender g4 10...Ng6 (10...Nc8!?+/–) 11.Qf3+– Threatening mate: Qf7 11...Nf6 (11...Qc8 12.Bf7 Kd8 13.Qh5+–) 12.Qb7 Bd6 (12...Rb8 13.Bb5 Ke7 14.Qc6+–) 13.Qc6 Ke7 14.Bb3 (14.d3 Qd7 15.Qd7 Nd7+–) 14...Qd7 15.Qd7 Kd7 16.Na3 (16.Bc2 Nh4 17.0–0 Rhc8+/–) 16...g4 (16...a5 17.Nc2+/–) 17.Nc4+– Ne4 (17...Rhf8 18.a3+–) 18.Bc2 Nc3 19.Bf5 Ke7 20.dc3 (20.Nd6?! Na2 21.Nb5 Nb4 22.Nc7 Raf8 23.Bg6 hg6 24.Ra7 Nd3 25.Ke2 e4 26.Nb5 Ke6+–) 20...Nh4 21.Be4 Raf8 22.h3 (22.Rd1 Rf6+–) 22...h5 (22...g3 23.fg3 Nf5 24.Bf5 (24.Nd6?! Ng3 25.Nf5 Nf5 26.Bf5 Rf5+/–) 24...Rf5 25.e4+–) 23.Ke2 (23.Na5 Ke6+–) 23...g6 (23...g3 24.fg3 Nf5 25.Bf5 Rf5 26.e4+–) 24.Rad1 gh3 (24...g3 25.f3+–) 25.Rh3 (worse is 25.Nd6 cd6 26.Rh3 Nf5+–) 25...Nf5 26.Rd5 (26.Nd6?! Nd6 27.Bd5 Rf6+–) 26...Ke6 27.Ra5 (27.Nd6?! Nd6 28.f3 Ne4 29.fe4 g5+/–) 27...g5 28.Bf5 (28.a4 g4 29.Rh1 h4+–) 28...Rf5 29.g4 Rff8 (29...Rf7 30.Rh5 Rh5 31.gh5+–) 30.Rh5 Rh5 31.gh5 g4 (31...Rh8 32.Nd6 cd6 33.Ra7 Rh5 34.a4+–) 32.Nd6 (32.Nd6 cd6 33.Ra7+–) 1–0. Zich,Z – Roczniak,Jan, corr Poland, 1981.

5.Nc3 Bd7 6.Ne5+/– Nf6 7.b5 c6 8.d4 cb5 9.e4 a6 10.Qb3 Qe7 11.Nd7 Nbd7 12.e5 Nb6 13.Bd3 Rd8 14.0–0 Nfd7? (better is 14...Nfd5!?+/–) 15.Rfe1+– Nb8 (15...Nc4 16.Ne4 Qh4 17.Nf6 gf6 18.Bc4 Be7 19.Bf7 Kf8+–) 16.e6 f6 (16...f5 17.Nb5! Nd5+–) 17.Nb5! Nd5 (17...ab5 18.Qb5 Decoy) 18.Ba3 ab5 (18...Qa3 19.Na3 (19.Qa3?! Ba3 20.Na3 Nb4+/–) 19...Bb4 20.Rec1+–) 19.Qb5 Nc6 20.Be7 Nde7 (20...Be7 21.Be4 0–0 22.Bd5 Nd4 23.Qb7+–) 21.Qb7 Rb8 22.Qd7 1–0. marekt – Benrubs, ChessWorld.net, 2012.

5.Nc3 Nd7!? =.

4.e3 Bg4

5.Qe2 A) 5...Bb4? 6.Qb5 (6.ed4?! Qe7+=) 6...Nc6 7.Ne5+–; B) 5...de3 6.Qb5 Nd7 7.de3 Bf3 8.gf3 Qe7 9.Qb7 Qb4 10.Qb4 Bb4 11.Nd2 Rb8=.

5.Be2 de3 6.Be5 A) 6...Bb4?? 7.Bg7 (7.fe3?! Nf6+=) 7...Bf3 8.Bf3+– (8.Bh8?! Bc6+–; worse is 8.gf3 Qh4 9.Rf1 ef2 10.Rf2 Bc5+–); B) 6...Nc6=.

5.Be2 Bf3 6.gf3 (6.Bf3 Qe7 7.Bb7 Qb4 8.Ba8 Qb2 9.Nc3 dc3 10.Rb1 cd2 11.Ke2 Qa2 12.Rb8 Ke7 13.Qd2+–) 6...Bb4–/+ 7.a3 Be7 (7...Bc5 8.Rg1 Qf6 9.Bd3–/+) 8.f4 f6 (8...ef4 9.Bd4 Bf6 10.Bf3–/+) 9.Rg1 (9.fe5 Nc6 10.Bf3 de3 11.Bc6 bc6 12.de3 Qd1 13.Kd1 Rb8=) 9...g6 10.h4 (10.f5 de3 (worse is 10...gf5 11.Bc4 Kd7 12.Qf3+=) 11.fe3 Qd7=) 10...c5 (10...de3 11.fe3 ef4 12.ef4–/+) 11.h5 (11.f5 Qd5+=) 11...Qb6–/+ 12.Qc1 (12.Bc1 ef4 13.hg6 hg6 14.Rg6 fe3 15.de3 Nd7–/+) 12...Nc6 (12...ef4 13.ed4 cd4 14.Bd3–+) 13.d3 (13.hg6 hg6 14.fe5 fe5–/+) 13...0–0–0 (13...ef4 14.Nd2–+) 14.Nd2 (14.fe5 fe5 15.Bg4 Kb8 16.hg6 hg6–/+) 14...ef4–/+ 15.Nc4 (15.ed4 cd4 16.c3 g5–/+) 15...Qc7 16.e4 (16.ed4 cd4 17.Bf3 b5–+) 16...g5 17.Bg4 Kb8 18.Rb1 Ne5 19.Ne5 fe5 20.f3 (20.Bf3 Nf6–+) 20...Nf6 21.Qd2 (21.c3 Ng4 22.Rg4 Rd6–+) 21...Ng4 22.Rg4 c4 23.dc4 Qc4 24.Rg2 (24.Rd1 Rc8 25.Rg2 Qb5–+) 24...Rhg8 25.Qa5 (25.Qe2 Qa2 26.Qd1 Ba3 27.Ba3 Qa3–+) 25...Qc5 (better is 25...Qa2!? 26.Rd1 Qb2 27.Qe5 Bd6 28.Qd4 Qa3 29.c3–+) 26.Qa4 (26.Qc5 Bc5 27.c3–+) 26...g4 27.fg4 (27.Qb3 Qa5 28.Kf1–+) 27...f3 28.Rg1 (28.Rh2 Rg4 29.Kd2 d3–+) 28...Bh4 (28...f2 29.Kf2 d3 30.Kg3 Qe3 31.Kh2 Qf2 32.Rg2 Qh4 33.Kg1 Bc5 34.Bd4 Rd4 35.Rb7 Kb7 36.Qb5 Bb6 37.Qc6 Kc6 38.Rd2 Qg4 39.Kf2 Re4 40.Kf1 Qg1) 29.Kd2 Bf2 30.Rbf1 (30.Rgf1 d3! 31.c4 Qe3 32.Kc3 d2 33.Kb4 Qc5 34.Kb3 Rg4 35.Ka2–+) 30...Be3 (30...Bg1 31.Rf3 Be3 32.Kd1–+) 31.Kd1 (31.Kd3 Rc8 32.Qb3 b5 33.Rf3 Bg1–+) 31...f2 (better is 31...Bg1 32.Qb3 f2 33.g5 Rg5 34.Qd3–+) 32.Rg2 Rgf8 (32...Qf8 33.Ke2 Qf4 34.Rff2 Bf2 35.Rf2 Qg4 36.Kd2 Qg5 37.Kd3 Qg3 38.Kc4 Qf2–+) 33.Qb4 (33.g5–+) 33...Qc6 34.Bc1 (34.Rgf2 Bf2 35.Qd2 Be3–+) 34...Qe4 35.Be3 (35.Rg3 Qf4 36.Qc4 Qg3–+) 35...de3 0–1. Szumilo – Roczniak,Jan, Pustkow Poland, 1968.

4.Ne5 Bb4

5.a3 Ba5 6.c4 dc3 7.Nc3 Qf6?? (better 7...Nf6=) 8.Qa4 Nc6? (8...c6 9.Ne4 Bd2 10.Kd2 Qe7+–) 9.Nc6 Qc6 10.Qa5 Ne7 11.e3 (11.Rc1 Qd7+–) 11...0–0 12.Qg5 (12.Qe5 Ng6 13.Qd4 f6+–) 12...f6 13.Qg3 Nf5 14.Qf4 Qb6 (14...Nd6 15.Rc1 Qd7 16.d4+–) 15.Na4 Qc6 (15...Qd6 16.Qd6 Nd6 17.d4+–) 16.Bc4 (better 16.Rc1!? Qd6 17.Rc7 Qf4 18.ef4 Nd6+–) 16...Kh8 17.0–0 (better 17.Bd3 Re8 18.Bf5 Bf5 19.Qf5 Qa4 20.0–0+–) 17...Qa4+– 18.Bd3 (18.Qc7 Bd7 19.Rac1+– (worse 19.Qb7 Rab8 20.Qd5 Rb2–/+)) 18...Qf4= 19.ef4 Rd8 20.Bf5 Bf5 21.Bc3 (21.d4 Re8=+) 21...Bd3 (21...c5 22.Rfe1=+) 22.Rfe1=+ Rd5 (22...Re8!?=+) 23.Re7+= Rc8 24.Rae1 Bb5 25.Rf7 (better 25.R1e3+=) 25...Rf5?? (better 25...Rd7 26.Rd7 Bd7=) 26.Ree7+– Re8?? (better 26...Rg8 27.Rc7 Bc6+–) 27.Re8 (27.Re8 Be8 28.Rf8) 1–0. GuestMFJV – GuestQTVJ, freechess.org, 2017.

5.a3 Ba5 6.Nc4 c5 7.Na5 Qa5 8.g3 Nc6 9.Bg2 Nf6 10.0–0 0–0 11.c3 dc3 12.Bc3+= Qd8 13.d3 Re8 14.Nd2 Rb8 15.Rb1 Nd5 16.Ba1 Be6 17.e4 Nf6 18.Qc2 Nd4 19.Qc5+= Ne2 20.Kh1 Qd3 21.Nf3 Bg4?? 22.Ne5+– Re5 23.Be5 Rc8 24.Qe3 Qe3+/– 25.fe3 b6 26.Bf6 gf6 27.Rf6 Rc3 28.Bf3 h5 29.Bg4 hg4 30.Rbf1 Re3 31.Rf7 Ra3 32.Rf8 Kg7 33.e5 Nd4 34.R8f4 Rf3 35.Rg4 Kf7 36.Rf3 Nf3 37.Rf4 Ke6 38.Rf3 Ke5 39.h4 (39.h4 a6 40.h5 a5 41.h6 Ke4 42.Rf4 Ke3 43.h7 Kd2 44.h8Q a4 45.Qd4 Kc2 46.Rf2 Kb3 47.Rb2 Ka3 48.Qc3) 1–0. mic (2100) – alaamattar (2235), net–chess.com, 2008.

5.a3 Ba5 6.Nc4 c5 7.e3 de3?? (better 7...Bc7=) 8.Bg7+– (8.Na5?! Nf6 9.Nb3 ef2 10.Kf2 0–0+–) 8...ed2 (8...Nf6 9.Bh8 ef2 10.Kf2 Qd4 11.Ke1 Qa1 12.Na5 Nbd7+–) 9.Nbd2 Qe7 10.Be2 Bg4 (10...Nf6 11.Bh8 Bc3 12.Bf6 Bf6+–) 11.Na5 1–0. DEFFM – gunawarman, freechess.org, 2018.

5.a3 Bc5 6.c3 Nf6 (6...dc3!? 7.Bc3 Nf6=) 7.cd4+= Bb6 8.Qa4 c6 9.e3 0–0 10.Bc4 Ne4 (10...Bc7 11.Qb3 Qe8+=) 11.Bf7 (better 11.0–0!?+–) 11...Rf7= 12.Qb3 (12.Nf7 Kf7 13.0–0 Be6=) 12...Qf6 (12...Ng5 13.0–0=) 13.0–0 (13.Qf7 Qf7 14.Nf7 Kf7+=) 13...Be6 14.Qc2 Nf2?? (better 14...Nd6 15.Nf7 A) worse 15...Nf7 16.d5 Bf5 A1) 17.Bf6?! Bc2 18.dc6 Nc6= (18...gf6?? 19.cb7 Be4 20.ba8R Ba8 21.d4+–); A2) 17.e4+–; B) 15...Qf7=) 15.Nf7+– Nh3? (15...Qf7 16.Rf2 Qh5+–) 16.gh3 Qg6 (16...Qe7 17.Ne5+–) 17.Qg6 hg6 18.Ne5 Bh3 (18...Nd7 19.Ng6 Bc7 20.d3+–) 19.Rf3 (19.Rf7!? Nd7 20.Rd7 Bd7 21.Nd7 Bc7+–) 19...Bf5 (19...Be6 20.Nc3 Nd7 21.Nd7 Bd7 22.d5+–) 20.Nc3 (20.d3 Bc7 21.e4 Be6+–) 20...Nd7 (20...Na6 21.Raf1+–) 21.Nd7 (21.Rf5!? gf5 22.Nd7 Rd8 23.Nb6 ab6+–) 21...Bd7 22.Raf1 Be6 23.a4 Bc7 24.Ba3 Kh7 (24...Bc4 25.Rf8 Rf8 26.Rf8 (26.Bf8?! Bf1 27.Bc5 Bd3+=) 26...Kh7 27.Ra8+–) 25.Rf8 (25.Ne4 Bf5 26.d3 Kg8+–) 25...Rf8 26.Rf8 a6 (26...Bc4 27.Ra8 Ba5 28.Ra7+–) 27.Re8 Bg4 (27...Bb3 28.Re7 Ba5 29.Rb7 Bc3 30.Rb3 Bd2 31.Kf2+–) 28.Re7 Ba5 29.Rb7 Bf3 (29...Bf5 30.Bb4 Bd8 31.Rb8+–) 30.Bf8 (30.Ra7 Bc3 31.dc3 Be2+–) 30…Kg8 1–0. GuestHGHT – GuestSHJD, freechess.org, 2019.

5.a3 Bc5 6.Nf3 Nf6 7.c3 (7.e3 de3 8.fe3 0–0=) 7...Nc6 (7...dc3!? 8.Nc3 0–0=) 8.cd4+= Bd4 (8...Nd4? 9.Nd4 0–0 10.e3+–) 9.Nd4 Nd4 10.e3 Nc6 (10...Nf5 11.Qc2=) 11.Bb5 (11.Qf3!?+=) 11...Qd5= 12.Bc6 Qc6 13.0–0 Bg4 14.Qb3 Be6 15.Qb4 Nd5 16.Qd4 0–0–0 (16...f6!?=) 17.Rc1 (17.Qa7 f6+–) 17...Qa6 18.Qg7 Rdg8 (18...Qd3 19.Qh8 Rh8 20.Bh8+=) 19.Qe5 (19.Qd4 Qe2 20.g3 Kb8+–) 19...Bh3 (19...f6 20.Qe4+=) 20.g3+– (20.g3 Be6 21.Nc3+– (21.Qh8 Rh8 22.Bh8 Qe2=+); 20.Qh8?? Rh8 21.Be5 Re8–+) 1–0. GuestQLLJ – GuestFBBS, freechess.org, 2018.

5.a3 Bc5 6.g3 Nf6 7.Bg2 Nbd7 8.Nf3 Nb6 9.d3 Na4=+ 10.Bc1 Be6 11.c4 Nb6 12.Nbd2 Bd7 13.a4 Bc6 14.a5+= Nbd7 15.Nb3 b6 16.0–0+/– Ng4 17.Nbd4 Bd4 18.Nd4 Bg2 19.Kg2 c5 20.Nc6 Qf6 21.Qa4+/– 0–0 22.Bf4 Rfc8 23.Nb4 Nde5? 24.Nd5+– Qd6 25.Be5 Ne5 26.ab6 (26.ab6 Rd8 27.Rfb1+–) 1–0. Nebe,Lutz – Huebsch,Hans, Koblenz–ch, 1995.

5.a3 Bd6 6.Bd4 Be5 7.Be5 f6 8.Bb2 (8.Bg3 Bg4+–) 8...Nc6 (8...Bg4 9.h3 Bh5 10.Nc3+–) 9.e3 (9.e4 Qe7 10.Nc3 Bf5+–) 9...Nge7 (9...Bf5 10.Bc4+–) 10.Bc4 (10.Qh5 Ng6+–) 10...a6 (10...Bf5 11.d3+–) 11.0–0 (11.Qh5 Ng6+–) 11...b5 (11...Bf5 12.d3+–) 12.Bb3 (better 12.Qh5 g6 13.Qf3 bc4 14.Bf6+–) 12...Nd5?? (better 12...Bf5+–) 13.Qh5 g6 14.Qd5 (14.Bd5 gh5 15.Bc6 Bd7 16.Ba8 Qa8+=) 14...Qd6 (14...Qd5 15.Bd5 Kd7 16.Bf6 Re8+–) 15.Qf7 Kd8 16.Bf6 Qf6 17.Qf6 (17.Qf6 Ne7 18.Qh8 Kd7 19.Qf6+–) 1–0. GuestNSBZ – vwvw, freechess.org, 2017.

5.a3 Bd6 6.Nf3 c5 7.e3 Bg4 (better 7...Qb6!? 8.Qc1 Nc6=+) 8.ed4 Qe7 9.Qe2 Qe2 (9...Bf3!? 10.Qe7 Ne7 11.dc5 Bc5 12.gf3 Nf5+=) 10.Be2+– f6 11.h3 Bf5 12.d3 Nh6 13.Nh4 (13.dc5 Bc5 14.c4 Nd7+–) 13...cd4 14.Bd4 Be5 (14...Be6 15.Be3+–) 15.Be5 fe5 16.Nf5 Nf5 17.Bh5 g6 18.Bf3 Nd4 19.Bb7 Nc2 20.Kd1 Na1 21.Ba8 Na6 22.Bc6 Ke7 23.Bb5 (23.Re1 Kd6 24.Bb5 Rb8+–) 23...Nc5 24.Re1 Kf6 25.Nd2 Rd8 26.Ne4 Ne4 27.Re4 Nb3 28.f4 Nd4? (better 28...ef4 29.Rf4 Ke5+–) 29.fe5+– Kf5 (29...Ke7 30.Bc4+–) 30.g4 Ke6 31.Bc4 Ke7 32.Rf4 Ne6 (32...Rd7+–) 33.Rf6 Nc5 34.Rf7 Ke8 35.Kc2 (better 35.Rh7 Rd3 36.Bd3 Nd3+–) 35...a5 (35...Rd7 36.Rd7 Kd7+–) 36.Rh7 g5 (36...Rd4 37.Rc7 Nd7 38.e6+–) 37.Rh8 (better 37.Rc7!? Nd3 38.Bd3 Rd5+–) 37...Ke7 38.Rd8 (38.Rh5!? Rc8+–) 38...Kd8 39.Kc3 Ke7 (39...Nd7 40.Kd4 Nb6 41.Ke4+–) 40.Kd4 Na4 41.Kd5 (41.Bb3!? Nb6 42.Ke4 a4+–) 41...Nc3 42.Kc5 Nb1 43.a4 (43.d4 Nc3 44.d5 Nd5 45.Bd5 Kd7 46.e6 Ke7+–) 43...Nd2 (43...Nc3 44.Bb3+–) 44.Kb5 Nf3 45.Ka5 Ne5 46.Kb6 Ng6 (46...Kd6 47.Bb5 Nf7 48.a5+–) 47.a5 (better 47.Kc7 Kf6 48.a5+–) 47...Nf4 (47...Kd6 48.a6 Ne7+–) 48.a6 Nh3 49.a7 Kd6 (49...Nf4 50.a8Q Nd5 51.Qd5 Kf6 52.Qf5 Kg7 53.Qg5 Kh7 54.d4 Kh8 55.Qh6) 50.a8Q Ke5 51.Qe4 Kf6 52.Qf5 (52.Qe6 Kg7 53.Qg8 Kf6 54.Qf7 Ke5 55.Kc5 Nf4 56.Qf5) 52...Ke7 (52...Kg7 53.Qf7 Kh6 54.Qf8 Kh7 55.Bg8 Kg6 56.Qf7 Kh6 57.Qf6) 53.Qe6 (53.Kc7 Nf4 54.Qf7) 53...Kd8 54.Qf7 (54.Kc6 Nf4 55.Qd7) 54...Nf4 55.d4 (55.Kc6 Nd3 56.Qd7) 55...Ng2 (55...Nd5 56.Qd5 Ke8 57.Kc7 Ke7 58.Qf7) 56.Be6 Ne3 (56...Nf4 57.Qd7) 57.Qd7 1–0. GuestDPNV – GuestJJJJ, freechess.org, 2017.

5.a3 Be7 6.e3 de3 7.fe3 Bf6 (better 7...Be6=) 8.Be2?? (better 8.Bc4 Nh6 9.Qh5+=) 8...Qd5–/+ 9.Bf3 Qb5 (9...Qb5 10.Bc3 Be5–/+) 0–1. GuestHKRL – GuestTKXW, freechess.org, 2017.

5.c3 Nc6?? 6.Nc6+– bc6 7.cb4 Qd6 8.e3 d3 9.Bg7 Bf5 10.a3 Ne7 11.Bh8 0–0–0 12.Bd4 a6 13.Bc5 Qe5 14.Nc3 Ng6 15.g3 Be4 16.f3 Bf5 17.Bg2 Be6 18.f4 Qf5 19.Qa4 Bc4 20.Qc6 h5 21.Bb6 Rd7 22.Qa8 1–0. Vetter,Udo – Gerhardt,Thomas, DESC, 2004.

5.c3 Bd6 6.cd4 +=.

5.c3 Qf6 6.Qa4+/– Nc6?? 7.Nc6+– (7.Nc6 dc3 8.Ne5 (8.Qb4?? cb2 9.Qe4 Be6–+) 8...c6 9.Nc3 Qe5 10.Qb4+–; 7.cb4?! Qe5 8.b5 Nce7 9.Bd4 Qg5+/–) 1–0. Wall,Bill – ShekyRambo, internet, 1999.

5.Nd3 a5 6.a3 Bd6 (6...Be7 7.e3=) 7.Bd4+= f6 (7...Nf6 8.Nc3+=) 8.e3+/– c5? (8...Nc6 9.Qh5 g6 10.Qb5+/–) 9.Bb2 (9.Bc5 Nc6+–) 9...b5? (9...Bf5 10.Qf3 Qc8 11.Nc3+/–) 10.Nf4 (10.Nc5 Kf8 11.Qf3 Ra7+–) 10...c4? (better is 10...Bf4 11.Bb5 Bd7 12.Bd7 Qd7+/–) 11.Qh5 Kd7 (11...Kf8 12.Ng6! hg6 13.Qh8+–) 12.Qb5 Nc6 13.Qc4 Nge7 14.Be2 Rb8 15.Bc3 Bf4 16.Qf4 Re8 17.0–0 Ng6 18.Bg4 Ke7 19.Qe4 Kf7 20.Qc4 Be6 21.Be6 Re6 22.d4 Nge7 23.d5! Qd5 24.Qd5 Nd5+/– 25.Bd2 f5 26.Nc3 Nc3 27.Bc3 Re4 28.Rfd1 Rd8 29.Rd8 Nd8 30.Ba5 Nc6 31.Bb6 g5 32.Rd1 g4 33.g3 Ne5 34.Kg2 h5 35.Bd4 Ng6 36.a4 Ne7 37.a5 Nd5 38.a6 Re8 39.a7 Ra8 40.Rb1 Ra7 41.Ba7 Nc3 42.Rb6 Nd1 43.c4 Ke7 44.c5 Nc3 45.Rh6 h4 46.Rh4 Kf6 47.c6 Kg6 48.c7 Nb5 49.c8Q Na7 50.Qe6 Kg5 51.Qh6 1–0. Valpa – Thrustnicely, playchess.de, 2004.

5.Nd3 Nc6 6.g3 (6.Nb4 Nb4 7.c3 Nc6+=) 6...Nf6 7.Bg2 0–0?? (7...Be7 8.c3=) 8.0–0?? (8.Bc6 bc6 9.Nb4 c5+–) 8...Re8?? (better is 8...Be7=) 9.Bc6+– bc6 10.Nb4 c5 11.Nd3 Qd6 12.Na3 Bb7 13.Nf4 (13.f3 Ba6+–) 13...Qc6 14.f3 Nd5 15.Nd3 (15.Nd5 Qd5 16.c4 Qd7+–) 15...Rab8 16.Nc4 Red8 (16...Qb5 17.Nce5 Nb6 18.a4+–) 17.Na5 Qh6? (17...Qb6 18.Nb3 c4 19.Bd4 Qb5+–) 18.Nc5 Ba8 19.Bd4 Rb5 (19...Ne7 20.Nab3+–) 20.Nab3 a5 (20...Ne7 21.e4+–) 21.c4 Rb3 (21...Rc5 22.Nc5 Nb6 23.Be3+–) 22.Qb3 Nb4 23.Qa4 Qd2 24.Rad1 Qe2 25.Rfe1 Bf3 26.Re2 Be2 27.Re1 Rd4 28.Qe8 1–0. ffrancis – diggerdogwoofwoof, ChessWorld.net, 2012.

5.Nd3 Qd6 6.Nb4 (6.e3 Nc6+=) 6...Qb4= 7.Ba3 Qb6 8.c3 f6 (8...Nf6 9.cd4 Qd4 10.Nc3=) 9.cd4+= Qd4 10.Nc3 Nd7 (10...Qe5 11.Qa4 Nc6 12.e3+=) 11.e3+– Qe5 12.Be2 (12.Nb5 Kd8+–) 12...Ne7 13.f4 Qa5 14.Be7 Ke7 15.0–0 Nc5 (15...Nb6 16.Rb1+=) 16.Nd5 (16.Qc2!?+–) 16...Kd6= 17.Bc4 Be6 18.d4? (18.f5 Bd5 19.Bd5 Kd5 20.d4=) 18...Bd5?? (better 18...Ne4 19.Rb1 c6 (worse 19...Bd5 20.Rb5+–) 20.Nf6 gf6 21.Be6 Ke6 22.Rb7 Rhd8= (22...Qa2?? 23.Qg4 f5 24.Qg7 Qg2 25.Qg2+–)) 19.dc5 (19.Bd5 Kd5 20.dc5 Ke6 21.Qb3 Ke7 22.Qb7 Rae8+–) 19...Qc5+= 20.Bd5 Qd5 21.Qg4 g5?? (better 21...f5 22.Qg7 Rhg8 23.Qf6 Kd7+=) 22.Rad1+– Rhd8 (22...c6 23.fg5 Rhf8 24.gf6+–) 23.Rd5 Kd5 24.fg5 Kc6 (24...b5 25.gf6 Kc6 26.Qe6 Kb7 27.Rc1+–) 25.Rc1 (better 25.Rf6 Rd6 26.Qc4 Kb6+–) 25...Kb6 26.Qb4 Ka6 27.gf6 c6 28.Rc5 b5 29.Rc6 Kb7 30.Qb5 1–0. GuestCMWC – jamminjasonj, freechess.org, 2017.

5.Nd3 Be7 6.e3 c5 7.Be2 (7.Ne5 Qb6 8.Nc4 Qf6=) 7...Nc6 8.0–0 Nf6 9.Na3 (9.Bf3 0–0=) 9...0–0 10.Re1 Nb4 (10...Be6 11.Nf4 de3 12.de3=) 11.ed4 Nd3 (11...cd4 12.Nb5 Nd3 13.Bd3=) 12.Bd3 cd4 13.Qf3 Ba3 (better 13...Bc5!?=) 14.Ba3+– Bg4 (14...Re8!?+–) 15.Qb7+– Re8 (15...Qc8 16.Qb2 Rd8 17.Be7+–) 16.Re8 Qe8 17.Bc5 Rb8 18.Qa6 (18.Qa7 Ra8 19.Qe7 Qe7 20.Be7 Nd5+–) 18...Qd8 (18...Rd8 19.Qa7 Ra8 20.Qb7+–) 19.Ba7 Ra8 20.Qb7 Rc8 (20...Ne8 21.Bc5+–) 21.Qb4 (21.Qb2 Nd5 22.Qd4 Qg5+–) 21...Be6 22.Qd4 Qd4 (22...Qe7 23.a4+–) 23.Bd4 Nd5 24.c3 Nf4 (24...Rd8 25.a4+–) 25.Bf1 Bc4 26.Bc4 Rc4 27.a4 (27.Be3!? Nd3+–) 27...Ne2 28.Kf1 Nd4 29.cd4 Rd4 30.a5 Rd2 (30...Rd7+–) 31.a6 Rd8 32.a7 Ra8 (32...Kf8 33.a8Q Ra8 34.Ra8 Ke7+–) 33.Rb1 (33.Rb1 Kf8 34.Rb8 Rb8 35.ab8Q Ke7 36.Qg8+–) 1–0. Janek – quguqu, internet, 2017.

5.Bd4?? Qd4–+ 6.c3 Qe5 7.d4 Bc3 8.Nc3 Qa5 (9.Rc1 Nf6–+) –+. Jan van Dijk – nbh999, ChessWorld.net, 2003.

5.Bd4?? Qd4 6.Nf3 Qa1 7.c3 Bd6 8.e3 Bf5 9.d3 Qa2 10.e4 Bg4 11.Be2 Bf3 12.Bf3 Nc6 13.0–0 Ne5 14.Be2 0–0–0 15.d4 Nc6 16.e5 Be5! 17.Nd2 Nf6 18.Nf3 Bf4 19.Qd3 Rhe8 20.Re1 Ne5! 21.Ne5 Be5 22.Qf5 Qe6 23.Qe6 Re6 24.de5 Re5 25.Kf1 Rde8 26.f3 Kb8 27.Kf2 Nd5 28.c4 Nc3 0–1. Fournier,Frederic (1780) – pacocasares (1700), Active (3/0), 2005.

5.e3 c5 6.a3 Ba5 7.ed4 cd4 8.Qf3 Nf6 9.h3 0–0=+ 10.Nd3 Re8 11.Kd1 (11.Kd1 Nc6 12.Be2–/+). cocohubert (1685) – Istvanny, internet, 2007.

5.e3 c5 6.ed4 cd4 7.Qf3 Nf6 8.Bc4 0–0+= 9.0–0 Be6?? 10.Be6 fe6 11.Qb7 Nbd7? 12.Nd7 Nd7 13.Qb4 e5 14.c3 Rb8 15.Qa3 d3 16.c4 Qg5 17.Bc3 e4 18.Qd6 Qg4 19.h3 Qf5 20.g4 Qf7 21.Qd5 Rbc8 22.Qf7 Rf7 23.Na3 Rf3 24.Kg2 Nf8 25.Rab1 Ng6 26.Rb7 Nf4+/– 27.Kh2 Rh3= 28.Kg1 (28.Kg1 Ne2 29.Kg2 Nf4 30.Kg1 Ne2 31.Kg2 Nf4 32.Kg1=) 1–0. erisonpassos – eldermagno, kurnik, 2011.

5.Nf3 Bc5 6.a4 Nf6 7.h3 (7.e3 de3 8.fe3 0–0=) 7...0–0=+ 8.Ba3 Ba3 9.Ra3 Nc6 10.g4 Nd5 11.Qc1 Nf4 12.Qb2 Re8 13.Kd1 a5 (13...Qd5 14.Rg1–/+) 14.g5 (better 14.e3 de3 15.fe3=+) 14...Nb4?? (better 14...Bf5–/+) 15.h4?? (better 15.Qd4 Qd4 16.Nd4+=) 15...d3!–+ 16.cd3 (16.cd3 Bg4 Decoy; 16.ed3 Qd5 Combination) 16...Bg4 17.Rg1 (17.g6 hg6 18.Ne1–+) 17...Bf3 18.ef3 (18.g6 hg6 19.d4 Ne2 20.Be2 Be2 21.Kc1 Qh4 22.Qc3 Nd3 23.Kc2 Qf2 24.Rc1–+) 18...Nfd3 (better 18...Qe7 19.Qb4 ab4–+) 19.Bd3 Nd3 20.Rd3? (20.Qb5 Nf2 21.Kc2–+) 20...Qd3 21.Qb5 (21.Kc1 Qf3 22.Rd1 Qf2–+) 21...Qf3 22.Kc1 Qf2 23.Rf1 Re1 (23...Qh4!? 24.Qd5 Re7 25.Nc3–+) 24.Re1 Qe1 25.Kc2 Qe4 26.d3 Qh4 27.Qb7 (27.Nc3 b6–+) 27...Qf2 (better 27...Qa4 28.Kc1 Re8 29.Nc3 Qf4 30.Kc2 Qh2 31.Kd1–+) 28.Nd2 (28.Kb3 Qa7 29.Qa7 Ra7–+) 28...Qc5 29.Nc4 Re8 30.Qa6 g6 (30...Qg5 31.Na5 Re2 32.Kb3 Qd5 33.Qc4 Qa5 34.Qd4–+) 31.Qa5 Re2 32.Kc3 Qe7 33.Qa8 Kg7 34.Qd5 c5 35.a5 Re1 36.Qe5 0–1. beatmeeasy (1910) – flosantos (1880), lichess.org, 2020.

5.Nf3 Bc5 6.c3 dc3 7.Nc3 Nf6 8.e3 Nc6 9.d4 Be7 (9...Bb4!?+=) 10.d5+– Nb4 11.e4 Bg4 12.a3 Bf3 13.gf3 Na6 14.e5 Nd7 15.f4 0–0 16.Be2 Bh4 17.0–0 Nb6 (17...Nac5 18.Qc2+–) 18.Qd4 c5 19.Qd1 Qc8 (19...Nc7 20.Bf3+–) 20.a4 Qf5 (20...Rd8 21.Bg4 Qb8 22.Bc1+–) 21.a5 Nd7 (21...Nc8 22.d6 Nb4 23.Bf3+–) 22.Bg4 Qf4 23.Bd7 Qe5 24.Qg4 Bf6 (24...Qg5 25.Qg5 Bg5 26.Rfd1+–) 25.Rfe1 Qd6 (25...Qg5 26.Qg5 Bg5+–) 26.Ne4 (26.Ne4 Bb2 27.Nd6 Ba1 28.Ra1+–) 1–0. Ddgs – Draess, internet, 2019.

5.Nf3 Nf6 6.Nd4 c5 7.Nb3 c4 +=.

5.Nf3 Nf6 6.Nd4 c5 7.Nf3 0–0 +=.

5.f4 Nf6 6.Bd4 (better is 6.c3!? dc3 7.Bc3=+) 6...Qd4–/+ 7.c3 Bc3 8.Nc3 Qf4 9.d4 (9.Nd3 Qg5–/+) 9...c5 10.Qa4 (10.Nf3 0–0–/+) 10...Nbd7 11.Rd1 0–0 12.Nf3 Nb6 13.Qc2 (13.Qa5 Nc4 14.Qc5 Ne3–+) 13...cd4 (13...Nc4!? 14.Rd3–+) 14.Rd4 Qc7 15.e4 Be6 16.Qd2 Rfd8 17.Be2 (17.Nb5 Qe7 18.e5 Ng4–+) 17...Rac8 18.Rd8 (better is 18.Nb5 Qc1 19.Qc1 Rc1 20.Kf2 Ne4 21.Ke3 Rd4 22.Rc1–+) 18...Rd8 19.Qb2 Nc4 20.Bc4 Bc4 21.e5 (21.Nd2 Bd3–+) 21...Ng4 22.Ne4 Re8 (better is 22...Qa5 23.Nfd2 Ne5–+) 23.h3 (23.Kd1 Ne5 24.Ne5 Re5 25.Re1 Qd7 26.Nd2 Qa4 27.Nb3 Bb3 28.ab3 Qd7 29.Qd2 Qd2 30.Kd2 Re1 31.Ke1–+) 23...Ne5 24.Ne5 (24.Qd4 f5 25.Nfd2 Nd3 26.Kd1 fe4 27.Qc4 Qc4 28.Nc4 Nf2 29.Ke2 Nh1–+) 24...Re5 25.Qd4 (25.Kf2 Rf5 26.Ke1 Qf4–+) 25...f5 26.Kf2 Re4 (27.Qc3 Re2 28.Kg1 Qc5 29.Kh2 Rg2 30.Kg2 Bd5 31.Qf3 Bf3 32.Kf3 Qc6 33.Kf4 Qh1 34.Kf5 Qh3 35.Ke5 h5–+) 0–1. nbh999 – Klaus Behrmann, ChessWorld.net, 2003.

5.c3 dc3

6.Qb3 cd2 7.Kd1+– Be6 (7...Qh4 8.Qf7 Kd8 A) 9.Nd2?! Nf6+/– (9...Qe7 10.Qe7 Ke7 11.Nd3 Bd2 12.Bg7 Bc3 13.Bc3) 10.Rc1 Be7 11.Rc3 Rf8 12.Qg7 Nbd7 13.Ndf3; B) 9.Qg7 Qf2 (9...Bd7 10.Nd7 Qf2 11.Nd2 Qf4 12.Nf3 Nd7 13.Qh8) 10.Nd2+– Qf8 11.Qh8 Nf6 12.Nf7 Ke8 13.Qf6; 7...Qe7 8.Nd3 Nc6 9.Bg7 Be6 10.Qb2 Bg4 11.a3 0–0–0 12.Nb4 Na5 13.Bh8) 8.Qb4 f6 (8...b6 9.Qa4 (9.Qb5 Kf8 10.Nd2 f6 11.Nef3 Ne7 12.Nd4 Bd7 13.Qb3) 9...Nd7 10.e4+– (10.Nc6 Qg5 11.h4 Qh6 12.Bd4 Ngf6 13.Nd2) 10...Ngf6 11.Nc6 Nc5 12.Nd8 Na4 13.Bf6; 8...Nf6 9.Nd2 Nbd7 10.Nd3 b6 11.g3 c5 12.Qa4 0–0 13.Bg2) 9.Nf3 (9.Qb7!? Bd5 (9...Nd7 10.Nc6 Qc8 11.Qc8 Rc8 12.Nd2 Ne7 13.Nd4) 10.Qb5 c6+– (10...Nd7 11.Nd2 Ne7 12.Nd7 Qd7 13.Qd7) 11.Qb7 Qb6 12.Qc8 Qd8 13.Qd8) 9...Nd7 (9...Nc6 10.Qb7 (10.Qe4 Qd6 11.Ba3 Qd7 12.Qd3 Qd3 13.ed3) 10...Nge7 11.Qa6+– (11.Nbd2 Rb8 12.Qa6 Rb2–/+ 13.Qa3) 11...Rb8 12.Ba3 Rb6 13.Qd3; 9...Ne7 10.Qb7 Nbc6 11.Qa6 Rb8 12.Ba3 Rb6 13.Qd3) 10.e3 (10.Qb7 Rb8 11.Qc6 Rb2 (11...Ne7 12.Qe6 Rb2 13.e3) 12.Qe6 Ne7+– 13.e3; 10.Nbd2 Ne7 11.Ba3 c5 12.Qb7 0–0 13.Qa6) 10...Ne7 (10...c5 11.Qd2 Ne7 12.Nc3 0–0 13.Ke1) 11.Nbd2 (11.Qb7 Rb8 12.Qe4 Nc5+/– 13.Qc2) 11...Nd5 (11...b6 12.Qh4+– (12.Bc4 Nc5 13.Bd4) 12...0–0 13.Nd4; 11...a5 12.Qe4 Bd5 13.Qc2) 12.Qa3 (12.Qb7!? Rb8 13.Qa6 Rb6+–) 12...c5 13.Bb5 (13.e4+– 2.38) 13...0–0 14.Bd7 Qd7 15.Qc5 Rac8 (15...Rfd8 16.Nd4+–) 16.Qa7 Rfd8 17.Ke2?? (17.Qd4 Qb5 18.a4 Qa5+–) 17...Rc2?? (better is 17...Qb5 18.Ke1 Qb2–+) 18.Qa3?? (better is 18.Bd4+–) 18...Nf4 19.Kf1?? (19.ef4 Rd2 20.Kf1 Qb5 21.Kg1 Rb2+=) 19...Rd2 (19...Qb5 20.Nc4 Qc4 21.Qd3 Qd3 22.Kg1 Ne2 23.Kf1 Nc1 24.Kg1 Qd1 25.Ne1 Qe1) 20.Bd4?? (better is 20.ef4 Qb5 21.Kg1 Rb2 22.h3+=) 20...Bc4 (20...Bc4 21.Ke1 Rd3 22.Qd3 Nd3 23.Kd2 Nf2–+; 20...Qb5 21.Qd3 Qd3 22.Kg1 Rd1 23.Ne1 Ne2 24.Kf1 Nc1 25.Kg1 Re1) 0–1. Trkn – dure_1982, itsyourturn.com, 2000.

6.Qb3 Qe7 7.Nc3 Nf6= 8.a3 Qe5 9.Qb4 Na6 10.Qb5 Qb5 11.Nb5 c6 12.Nd4 0–0 13.e3.

6.Qb3 Nh6? 7.Qb5 Nd7 8.Nd7 Bd7 9.Qc5. COMP – Gross.

6.Bc3 Bc3 7.Nc3 Nf6 8.d4 0–0 9.e3 Nd5 (9...Nbd7 10.Bc4=) 10.Ne4 (10.Nd5 Qd5 11.Qc2 Qa5 12.Qd2 Qd5+=) 10...f6 11.Qh5?? (better is 11.Nd3=) 11...fe5–+ 12.de5 (12.Qe5 Nc6 13.Qg5 Qg5 14.Ng5 Ncb4–+) 12...Rf5 13.Nf6 (13.Qd1 Re5 14.Bc4–+) 13...Nf6 14.Qh4 (14.Qd1 Qd1 15.Rd1 Re5 16.Rd8 Re8 17.Re8 Ne8 18.Bc4 Kf8–+) 14...Re5 15.Bc4 Kh8 16.0–0 (16.Be2–+) 16...Re4 17.Qg5 Rc4 18.Rfd1 Qe8 19.a4 (19.Rac1 Rc1 20.Rc1 Nc6–+) 19...Ra4 20.Ra4 Qa4 21.Qh5 Bg4 (21...Nh5?? 22.Rd8 Qe8 23.Re8) 22.Rd8 Ng8 23.Qd5 Qa1 24.Qd1 Bd1 25.h3 a5 26.e4 a4 27.f4 Bc2 28.Kh2 Qf1 29.e5 Be4 30.Kg3 (30.Rd2 Qf4 31.Kg1 Qd2 32.Kf1 Bg2 33.Kg1 Bh3 34.e6 Qg2) 30...Qg2 31.Kh4 Qf2 32.Kg5 (32.Kg4 Qf3 33.Kh4 Qf4 34.Kh5 g6) 32...Qg3 33.Kh5 g6 0–1. Jan van Dijk – Klaus Behrmann, ChessWorld.net, 2003.

6.Bc3 Bc3 7.Nc3 Nf6 8.e4 0–0 9.d4 Nbd7 10.Bc4 Qe7 11.Bf7 (11.f4!?=) 11...Kh8 12.Nd5 Nd5 13.ed5?? (better is 13.Bd5 Ne5 14.de5–/+) 13...Ne5–+ (13...Rf7?! 14.0–0 Rf5 15.f4–+) 14.Be6 (14.de5 Qe5 15.Kf1 Rf7 16.Qe1–+) 14...Qb4 15.Qd2 (15.Kf1 Qb2 16.f3 Nd3 17.Qd3 Qa1 18.Kf2 Qh1–+) 15...Nd3 16.Ke2 Rf2 17.Kd3 Rd2 18.Ke3 (18.Ke4 Rd4 19.Kf3 Qc3 20.Kf2 Rd2 21.Ke1 Ra2 22.Kf1 Qa1) 18...Qd4 19.Kf3 g5 20.g4 (20.Bc8 Qf4) 20...Qd3 0–1. Jan van Dijk – marekt, ChessWorld.net, 2003.

6.Nc3 c5 7.Qa4 Nd7 8.Ne4 Qc7 9.Nd3 b5 (9...Kf8+–) 10.Qc2 (10...Bb7 11.Nb4+–; 10.Qb5?! Rb8 11.Qc4 Kf8+–) 1–0. kamret (2200) – NN, GameColony.com, 2003.

6.Nc3 Nc6 7.Nc6+/– bc6 8.Ne4 Nf6 9.Bf6 gf6 10.Qa4 Qd4 11.Qc6+– Kf8 12.Rd1 Rb8 13.Qc7 Bf5?? 14.Qb8 Kg7 15.Qg3 Bg6 16.Nc3 f5 17.e3 Qg4 18.Qe5 f6 19.Qc7 Kh6 20.h3 Qh5 21.Qf4 Qg5 22.Qb4 Bh5 23.g4 fg4 24.hg4 Qg4 25.Qg4 a5 26.Rh5 1–0. Djoudi,Amar (2115) – Davidson,Allan D, internet, 2002.

6.Nc3 Qd4 7.Qa4 c6 8.Nf3+/– b5?? 9.Qb3+– Qd6 10.Nb5!! cb5 11.Bg7 Be6 12.Qc2 Nc6 13.Bh8 Rc8 14.Qh7 (14.Qh7 Nge7 15.e4+–) 1–0. marekt – titkar, sachy.sk, 2008.

6.Nc3 Qd6 7.Nb5 Qc5? 8.Qa4 Bd7 9.Nd7 Nd7 10.Bd4 Bd2 11.Kd2 Qg5 12.e3 Rc8 13.Rc1 Ne7 14.Na7 Rd8 15.Rc7 Qd5 16.Bb5 0–0 17.Bd7 Qg2 18.Qd1 Qf2 19.Qe2 Qh4 20.Rb7 Ng6 21.Rhb1 Qg5 22.Nc6 Ra8 23.Be6! Nh4 24.R1b5 Qh6 25.Bf7! Kh8 26.Rh5 Qc6 27.Bg7! Kg7 28.Qg4 Ng6 29.Rh7! Kh7 30.Bg6 (30.Bg6 Kh8 31.Qh5 Kg8 32.Qh7) 1–0. woschkat (1990) – dennism (1760), net–chess.com, 2001.

6.Nc3 Nd7 7.Nf7 Qe7?? 8.Nh8+– Ngf6 9.Qb3 Ne5 (9...Nc5 10.Qc2+–) 10.Nd5 Nd5 11.Qd5 Bf5 (11...Ng4 12.Qg8 Qf8 13.Qf8 Kf8 14.Rc1+–) 12.Be5 (12.Be5 Rd8 13.Qg8 Qf8 14.Qf8 (14.Qg7 Bd2 15.Kd1 Bb4 16.Qd7 Rd7 17.Bd4 Rd4 18.Kc1 Ba3) 14...Kf8 15.Bf4+–) 1–0. DEFFM – jsutour, freechess.org, 2018.

6.Nc3 Nd7 7.Nf7!+/– Kf7 8.Qb3 Ke8 9.Qb4 Qe7 10.Qe7 Ne7 11.Nb5 Nd5 12.e4 a6 13.Nd4 N5f6 14.Ne6 Ke7 15.Nc7 Rb8 16.e5 Ng4 17.Ba3 Kf7 18.e6 (18.e6 Kg6 19.Bd3 Kh5 20.ed7 Bd7 21.Rc1+–) 1–0. Woelfelschneider,Peter – Ifcanales, 2009.

6.Nc3 Nd7 7.Nf7 Kf7 8.Qb3 Kf8 9.Qb4+– Ne7 (9...c5 10.Qf4 Qf6 11.Qg3+–) 10.Nd5 c5? (10...Ke8 11.Ne7 c5+–) 11.Qf4 Ke8 (11...Nf6 12.Nf6 Ng6+–) 12.Nc7 (12.Nc7 Qc7 13.Qc7+–) 1–0. GuestLQXW – gunawarman, freechess.org, 2018.

6.Nc3 Qe7? 7.Nd3?? (7.Qa4 c6 8.Nd5 Bd2 9.Kd2+–) 7...Bd6 8.e3 a6 (8...Nf6 9.Nb5=) 9.Nd5 Qd8?? (9...Qg5 10.f4 Qh6 11.Be5 Be5 12.Ne5=) 10.N3f4 (better 10.Bg7 Qg5 11.Nc7 Bc7 12.Bh8 Nc6+–) 10...f6? (better 10...Kf8+=) 11.Qh5+– g6? (11...Kf8 12.Ng6! hg6 13.Qh8 Be6+–) 12.Ng6! Kd7 (12...hg6 13.Qg6 Double attack (13.Qh8 Pinning; 13.Qh8 Deflection)) 13.Nh8 (13.Nh8 Qf8 14.Qh7 Kd8 15.Nf7 Ke8 16.Nd6 cd6 17.Rc1+–) 1–0. GuestYDBL – GuestPFHQ, freechess.org, 2017.

6.Nc3 Be7 7.e4 Nd7 +=.

6.Nc3 f6? 7.Qa4+/– c6 8.Qb4 fe5 9.Ne4 Nf6? (better is 9...Qe7 10.Qe7 Ke7 11.Be5 Nf6+/–) 10.Nd6 Kd7 11.g3 (11.Nb7?! Qe7 12.Nc5 Ke8+–; 11.Nc8?! Kc8 12.Be5 Re8+/–) 11...Na6 (11...Qe7 12.Bh3 Kc7 13.Bc8 Rc8 14.Qb7 Kd6 15.Ba3 c5 16.Qc8 Qc7 17.Qf8 Ke6 18.Bc5 Qb7+–) 12.Bh3 Kc7 13.Be5 Nb4 14.Nc8 Qd6 15.Bd6 Kd8 16.Bb4 (16…Rc8 17.Bc8 Kc8 18.Bc3+–) 1–0. b4_player (2165) – babywawatk_SI, GameColony.com, 2002.

6.Nc3 f6? 7.Qa4+– Nc6?? 8.Nc6 bc6 9.Qb4 Bd7 1–0. GuestYQJX – Husan, freechess.org, 2020.

6.Qa4 c6

7.Nc3 Be7 8.Qb3 Nh6 9.Rb1 =.

7.Nc3 Be7 8.d4 =.

7.Nc3 a5

8.a3 Bc3 9.Bc3 Nf6 +=.

8.a3 Bd6 9.Ne4 Nf6 10.Qd4 (10.Nf6 Qf6 11.Nc4+–) 10...Be7?? (better is 10...Ne4 11.Qe4 0–0=+) 11.Qd8+– Bd8 (11...Kd8 12.Nf7 Ke8 13.Nh8 Ne4 14.Bg7+–) 12.Nd6 (12...Ke7 13.Nc8 Ke6 14.Nd6+–) 1–0. Furlepa,Zdzislaw – Roczniak,Jan, corr 1. AMM Poland, 1991.

8.a3 Be7 =.

8.e3 Be6

9.a3 Be7 =.

9.Be2 b5 10.Qc2 =.

9.Be2 f6 10.Nf3 b5 11.Nb5 cb5–/+ 12.Bb5 The passed pawn on d2 will become decisive later 12...Bd7 (12...Nd7 13.0–0–/+) 13.Rc1 (13.a3 Be7=+) 13...Ne7 (13...Bb5 14.Qb5 Nd7 15.0–0–/+) 14.a3 (14.Nd4 Ng6=+) 14...Bd6 15.Qe4 (15.Nd4 0–0=+) 15...Ra7–/+ (< 15...Bb5 16.Qa8 Bc6 17.Qa7=) 16.Bc4 (16.Nd4 Bb5 17.Nb5 Ra6–/+) 16...Bf5 17.Bb5 Nd7 18.Qh4 Rb7 19.a4 0–0 20.Nd4 Ne5 (20...Bb4 21.Nf5 Nf5 22.Qe4 Bd2 23.Ke2 Bc1 24.Rc1 Rb5 25.ab5–+) 21.Nf5 Nf5 22.Qe4 Bb4 23.0–0 Nd6 24.Qd5 Rff7 25.d4 Ng4 26.Bc6+= Rb6 27.Qf3 Nh6 28.Bd5+= Qe8 29.Rc7 Kh8 30.Bf7+/– Nhf7 31.Rfc1 h6 32.h4 Rb8 33.e4 Rc8 34.Rc8 Nc8 35.e5 fe5 36.Qg4 Ne7 37.de5+/– Nd8 38.Rd1 Qg8 39.f4 Ndc6 40.e6 Qh7 41.h5 Nf5 42.Rd7 Nfe7+/– 43.Kh2 Kg8 44.f5!+– Nf5 45.Rf7 Nce7? 46.Qf3 (46...Kh8 47.Rf8 Ng8 48.Rf5 Bd6 49.Kh3+–) 1–0. Piszcz,Kazimierz – Roczniak,Jan, corr 1. AMM Poland, 1991.

9.Be2 f6 10.Nf3 b5 11.Qc2!? Ne7 12.a4 ba4 13.Ra4 +=.

9.Be2 f6 10.Nf3 Bc3 11.Bc3 b5 12.Qf4 (12.Qe4 Qd5 13.Qc2 Ne7+=) 12...Ne7 13.Bf6 0–0 14.Be7 Qe7 15.Qe4 Qf6 (15...Ra7 16.0–0+/–) 16.0–0 (16.d4 Bd5 17.Qg4 Qf7+/–) 16...Bd5+= 17.Qc2 (17.Qg4 Na6+=) 17...Nd7 (17...Na6 18.d4+=) 18.Nd4 (18.e4 Qg6 19.d3 Bf7+/–) 18...Rae8+= 19.Rac1 Re4 (19...Qg5 20.f3 Ne5 21.e4=) 20.f4 (better is 20.Nc6!? Ra4 21.Bb5 Ra2 22.Qd3+–) 20...Rd4+= 21.ed4 Qd4 22.Kh1 Nb6 23.d3 Rf4+= 24.Rf4 Qf4 25.Rf1 Qd6 26.Qd2 Nc4 27.Qg5 Ne5 28.Qf4 Ba2 Bf3 Qf6 30.Qd2+= Bf7 31.Qa5 g6 32.Qc3 Qd6 33.Bc6?? b4–+ 34.Qa1 Nc6 35.Rf6 Qe5 36.Qf1 Bd5 37.Rf8 Kg7 38.Rc8 g5 39.h3 b3 40.d4 Nd4 41.Qa1 Qe4 42.Qb2 Qe1 43.Kh2 Qe5 44.Kh1 h5 45.Qc3 Qe4 46.Qb2 Qe1 47.Kh2 Qe5 48.Kh1 g4 49.Rc3 Qe4 50.Qd2 Kg6 51.Re3 Qf4 52.hg4 hg4 53.Qd3 Nf5 (54.Qd5 Qe3 (54...Ne3?! 55.Qg8 Kh5 56.Qe8 Kg5 57.Qg8 Kf5 58.Qf8 Ke4 59.Qb4 Nc4 60.Qc4 Ke5 61.Qb3=+) 55.Qg8 Ng7–+) 0–1. Piszcz,Kazimierz – Roczniak,Jan, corr 2. AMM Poland, 1993.

8.e3 f6

9.Nf3 =.

9.Nd3 b5

10.Qb3 Be7

11.a4 b4 12.Ne4 Qd5 13.Qd5 cd5 =.

11.Be2 a4 12.Qc2 a3

13.Bc1 Qa5 14.0–0 +=.

13.Bc1 Qa5 14.Nf4 b4!? 15.Ne4 f5 =.

13.Bc1 Qa5 14.Nf4 Nh6 15.Nb5!+/– g5 (15...cb5 16.Qc8) 16.Nh5 0–0 (16...Ba6!? 17.Nd4 Be2 18.Ne2 Qa4 19.Qa4 Ra4+/–) 17.Nd4+– Qe5 (17...Qc5 18.Bc4 Kh8 19.d3+–) 18.Rb1 Bd7 19.Bd3 f5 20.f4 gf4 21.Nf4 Bh4 22.g3 Be7 23.Rb3 Ra5 (23...Kh8 24.Bc4+–) 24.Bc4 Kh8 (24...Nf7 25.Qc3+–) 25.Qc3 Qe4 (25...Bf6 26.Ba3 Ra3 27.Ra3+–) 26.0–0 (26.Qa5?! Qh1 27.Bf1 Ng4+–) 26...Qe5 (26...Ra8 27.Ba3 c5 28.Bc5 Bc5+–) 27.Nd3 Qc7 28.Ne6 Bf6 29.Qb4 (29.Qf6 Rf6 30.Nc7 Ra7+–) 29...c5 30.Ndc5 Nc6 31.Nc7 (31.Nf8?! Nb4 32.Ncd7 Qc4 33.Nf6 Ng4 34.Ng4 Na2 35.Ra3 Ra3 36.Ba3 Qg4 37.Bb2 Kg8+–) 31...Nb4 32.Nd7 Rc8 (32...Na2 33.Ra3 Ra3 34.Ba3+–) 33.Nf6 Rc7 34.Rb4 Rc6 35.Nh5 Rc8 36.d3 Rca8 37.Bd2 Ng4 38.Bc3 Ne5 39.Ra4! (39...h6 40.Ba5+–) 1–0. Diener,Rudolf – Proscinski, corr ICCF WT–M, 1985.

13.Bc1 Bf5 14.e4 Bg6 15.Rb1 =.

13.Bc1 Nh6 14.Nf4 =.

6.Nc3 a5

7.a3 Bd6 8.Nf3 (8.Ne4 Be7+=) 8...Nh6 (8...Nf6 9.Ne4=) 9.e3 (9.Nb5 0–0+=) 9...c6 (9...0–0 10.Be2=) 10.d4 0–0 11.h3 (11.Ne4 Be7+=) 11...Nd7 (11...Re8 12.Be2=) 12.Bd3+= Nf6 13.Qc2 g6 (13...Re8 14.Ng5+=) 14.0–0 Be6 15.Ne4 (15.e4 Bf4+=) 15...Ne4 16.Be4 Bf5 (17.Bf5 Nf5+=; 16...f5 17.Bd3=). Zamarski – Roczniak,Jan, corr 1. AMM Poland, 1991.

7.a3 Be7 8.Qb3 Nh6 9.Nd5 a4 10.Qd3 f6 11.Rc1 c6 12.Ne7 Qd3 13.Nd3 (worse is 13.ed3 Ke7 14.Nf3 Be6–/+) 13...Ke7 14.e4 Re8 15.f3 Nf7 16.Nf4 Ng5 17.Bc4 Ne6 18.Nh5 Rg8 19.f4 b5 20.Ba2 b4 21.ab4 a3 22.Bc3 Rd8 23.f5 Nd4 (23...Ng5 24.Kd1 Kf8 25.Re1+/–) 24.Ng7+– Ra4 25.Kd1 (25.Nh5 Na6 26.Nf6 Kf6 27.Bd4 Rd4 28.Rc6 Ke7 29.f6 Kd7+–) 25...Na6 26.Rb1 Nb5 (26...Nc7 27.Re1+/–) 27.Kc1 c5 28.Bb3 Rb4 29.Bb4 Nb4 30.Bc4 Nd6 31.Bd5 ½–½. anizandolivia – marekt, ChessWorld.net, 2003.

7.a3 Be7 8.Qb3 Nh6 9.Nd5 f6 10.Rc1 c6 11.Ne7 Qe7 12.Nc4 b5 13.Nb6 Be6 14.Qf3 (14.Qg3 Nf5 15.Qf4 g5=) 14...Ra6 15.Bd4 Qb7 16.Qh5 Kd8 17.Qc5 (17.Bf6 gf6 18.Qh6 Qe7=) 17...Nf5 18.e4 (18.e3!?=) 18...Nd4–/+ 19.Qd4 Ke7 20.Na4 ba4 21.Ba6 Qa6 22.Qa4 Rd8 23.Rc3 Rd3 24.0–0 Rd2 25.e5 fe5 26.Qh4 Kd6 27.Qh7 Qe2 28.Re3 (28.Qg7?? Rd1 29.Qe5 Ke5 30.Re3 Qe3 31.fe3 Rd3–+) 28...Qg4 29.h3 Qd4 30.Qg7 Nd7 31.Qg6 c5 (31...Qd5 32.Qe8=) 32.Re4 (32.Rfe1!?=) 32...Qd3=+ 33.Rfe1 Rd1 34.Rd1 Qd1 (35.Kh2 Qd3–/+) 0–1. Alissa – marekt, ChessWorld.net, 2003.

7.Qa4 Nd7 +=.

7.e3 Nd7 8.Nd7 Bd7 9.Nd5 +=.

7.e3 Nf6 8.Bb5 c6 9.Bc4 =.

7.e3 Nf6= 8.Bb5 Nbd7 =.

7.e3 Nf6= 8.Bc4 0–0 9.Qb3 (9.0–0 Nbd7 10.Nd7 Bd7=) 9...Qe7 10.d4 (10.a3 Bd6 11.d4 c6=) 10...a4=+ 11.Qc2 a3 12.Bc1 Bd6 (12...Bf5 13.Bd3 Bd3 14.Qd3=+) 13.f4= b6 (13...Bb4 14.0–0=) 14.0–0 Bb7 (14...Ba6 15.Ba6 Ra6 16.Nb5=) 15.Bd2 (15.Rb1 Na6=) 15...Nbd7 (15...Nc6 16.Nb5=) 16.Qb3 (16.Rac1 c5= (16...Ne5? 17.fe5 Be5 18.de5 Qe5 19.Rf5+–)) 16...Ne4= (< 16...Be5 17.fe5 (17.de5?! Ng4 18.Qd1 Qh4=) 17...Ne4 18.Ne4 Be4 19.Bb4+/–) 17.Ne4 Be4 (< 17...Be5 18.fe5 Be4 19.Bb4+/–) 18.Bd5 (18.Bd3 Nf6= (< 18...Ne5 19.fe5 Bd3 20.ed6+/–)) 18...Bd5 19.Qd5 Nf6 (19...Rae8 20.Rab1=) 20.Qc6 (20.Qf3 Rac8=) 20...Qe6 21.Rfc1 h6 22.Be1 Rfb8 23.e4 Qe8 24.Rc2 b5 25.Bh4+= Rb6 26.Qe8 Ne8 27.Nd7 Rb7 28.e5 Bf8 29.Rb1+/– f6 30.Nf8 Kf8 31.Be1 Kf7 32.Kf2 fe5 33.fe5 Ra4 34.Ke3+– Rb6 35.Rb3 g5 36.Bb4 Rba6 37.d5 h5 38.Kd4 Kg6 39.Kc5 c6 40.dc6 Kf5 41.Kd5 (41...Nc7 42.Kd6+–; 41.e6 Nc7 42.e7 Ra8+–) 1–0. Skonieczny,Jerzy – Roczniak,Jan, corr 2. AMM Poland, 1993.

7.g3 c6 8.Bg2 Nd7 9.Nd7 Bd7 10.Ne4 f6 11.a3 Be7 12.0–0 Nh6 13.Rc1 Qc8 (13...Be6 14.Nc5 Bc5 15.Rc5+=) 14.d4 Bh3 15.Qb3 (15.d5 Bg2 16.Kg2 Qg4+=) 15...Bg2 16.Kg2 Qf5 17.Nc5 Qd5 (17...Rb8 18.Nb7 Qd7 19.Qc2 Rb7 20.e4–+) 18.Qd5+/– cd5 19.Nb7 Nf5 (19...Rb8 20.Rc7+/–) 20.Rc7 h5 (20...Bd8 21.Nd8 Rd8 22.Rb1+–) 21.Rfc1+– Kf7 22.R1c5 White gets the initiative 22...Kg6 (22...Ke6 23.R5c6 (23.Ra5 Ra5 24.Rc6 Kd7 25.Na5 Ra8–/+) 23...Kf7 24.Kf3+–) 23.Rd5 (23.Ra5?! Ra5 24.Na5 Ra8+/–) 23...Rhc8?! (23...Bd8 24.Rc2 (24.Rd8?! Rhd8 25.Nd8 Rd8+–; 24.Nd8?! Rhd8 25.Rd8 Rd8+–) 24...Ne7 25.Rd7+– (25.Nd8?! Nd5 26.Nc6 Rhe8+=; 25.Rd8?! Rhd8 26.Nd8 Rd8+–)) 24.Rdd7 (24.Rc8 Rc8 25.e4 Ne3 26.fe3 Rc2 27.Kh3 Rb2 28.Na5 Ba3+–) 24...Rc7 25.Rc7 Bd8 (25...Bd6 26.Nd6 Nd6 27.Kf3+–) 26.Rd7 Bb6 (26...Rb8 27.e4 (27.Nd8 Rb2 28.e4 Ne3 29.Kh3 Ng4+–; 27.Rd8?! Rb7 28.Bc1 Rb1+–) 27...Nh6 28.Bc3+– (28.Nd8?! Rb2 29.Ne6 Ng4 30.Rg7 Kh6+–; 28.Rd8?! Rb7 29.Bc1 Nf7+–)) 27.e4 Nh6 28.Rd6 Bc7 29.Rc6 Bd8 30.Nd8 (30.Nc5 Rb8 31.Bc3 Bb6+–) 30...Rd8 31.d5 Kf7 32.e5 (32...fe5 33.Rc5+–; better is 32.Rc7!? Kg6+–) 1–0. Kuperski,Marek – Roczniak,Jan, corr 1. AMM Poland, 1991.

7.e3 c6

8.a3 Bd6 9.Nc4 (9.Ne4 Nf6 10.Nf6 Qf6+/–) 9...Nf6 10.Na4 (10.Nd6 Qd6 11.d4 0–0+=) 10...Bc7= 11.Bf6 gf6 (11...Qf6 12.Nab6 Bg4 13.Qg4 (13.Na8?! Bd1 14.Nc7 Kf8 15.Rd1 Qd8=+) 13...Qa1 14.Ke2 Bb6 15.Nb6+–) 12.Nc3 b5 13.Nb2 Nd7 (13...Qe7 14.Qf3 Ra7 15.d4+=) 14.Qc2 (14.d4 Rb8+=) 14...Bb7 (14...0–0 15.d4+=) 15.Rc1 Bd6 16.Qe4 Qe7 (16...Kf8 17.Nb5 Nc5 18.Qf5 cb5 19.Rc5 Bc5 20.Qc5 Kg7 21.Qb5+=) 17.Nb5 Kd8? (17...cb5 18.Qb7) 18.Nd6+– Qd6 19.Qd3 Qd5 20.Qd5 cd5 21.d4 Nb6 22.Bb5 Rc8 23.Rc8 Bc8 24.Ke2 Bd7 25.Bd7 Kd7 26.Rc1 Rc8 27.Rc8 Nc8 28.Nd3 Kc6 29.a4 Nb6 30.Nc5 f5 31.Kf3 Na4? 32.Na4 Kb5 33.Nc5 (33...h6 34.Kf4+–) 1–0. Ewert,Jerzy (2000) – Roczniak,Jan (2000), corr 1. AMM Poland, 1991.

8.Bc4 Be6 +=.

8.Ne4 Bf5 9.Qb3 Nh6 10.a3 Be4 11.ab4 +=.

8.Ne4 Bf5 9.Qh5 Be6 10.a3 +=.

8.Ne4 Nh6 9.Nc6! Nc6 10.Bg7 Qh4?? (10...f5 11.Nf6 Kf7 12.Bh8 Qh8+=) 11.Nf6+– (11.Bh8 Qe4 12.a3 Bg4+–) 11...Ke7 12.Bh8 Be6 Black gets deadly initiative 13.Bg7 (better is 13.g3 Qg5 14.h4+– (14.Nh7?! Qf5+–)) 13...Rd8+/– 14.g3 Qg5 15.Ne4 Qg7 16.a3 Bd5 17.ab4 Be4 18.Rg1 Nb4 19.Rc1 Qb2 20.Be2? (better is 20.Rc7 Kd6 21.Rc3–/+) 20...Bc2–+ 21.Rc2 Qc2 (22.d4 Qd1 23.Kd1 a4–+; 21...Nc2 22.Kf1–+) 0–1. Sternik,Ryszard – Roczniak,Jan, corr Poland, 1990.

8.Bc4 Nh6

9.0–0 b5 10.Be2 0–0 11.Rc1 f6 12.Nf3 a4 13.d4 Be6 14.a3 Ba5 15.Qc2 Bf5 16.e4 Bg6 17.Rfd1 (17.Rfe1 Re8 18.Bd3 b4 19.ab4 Bb4+/–) 17...Qd7 (17...Qe7 18.Nh4 Bf7 19.Bd3+=) 18.d5= White gets the initiative 18...Bc3 19.Bc3 cd5 20.Qa2 Bf7 (20...Be4!? 21.Qb2 Qd6=+) 21.Qb2 (21.ed5!? Rd8 22.Qb2 Bd5 23.Bb5+/–) 21...Qb7+= 22.e5 Nd7 (22...fe5 23.Ne5 Be8 24.Bf3 Rf3 25.Nf3+–) 23.ef6 gf6 (23...Nf6 24.Bf6 gf6 25.Bb5+=) 24.Bb5+– Ng4 25.Qb4 (25.Bd4 Rab8 26.Rb1 Bg6 27.Bd7 Qd7 28.Qb8 Rb8 29.Rb8 Kg7+/–) 25...Nge5 26.Ne5 Ne5 27.Be5 (27.Bd4 Be8 28.Rc5 Bb5 29.Rb5 Qf7+/–) 27...fe5 28.Qg4 Bg6? (28...Kh8 29.Bc6 Qb8 30.Ba8 Qa8+–) 29.Bc6+– Qb2 30.Bd5 Kh8 31.Ba8 Qf2 32.Kh1 Bc2? 33.Re1 Ra8 34.Qe6 Qf5 35.Re5 Qe6 36.Re6 Bb3 37.Rec6 Bg8 38.Rc8 Ra6 39.Rb8 Kg7 40.Rc7 Bf7 41.Rbb7 Rf6 42.Kg1 Kg6 43.Ra7 h5 44.Ra4 (44...Bb3 45.Rd4+–) 1–0. Maciejewski – Roczniak,Jan, corr 1. AMM Poland, 1991.

9.0–0 b5 10.Be2 f6 11.Nf3 a4 12.a3 White fights for the Initiative 12...Ba5 13.d4 Nd7 (13...0–0!?+=) 14.d5+/– Bc3 15.Bc3 Bb7 16.dc6 Bc6 17.Nd4 Rc8 18.Nc6 (18.Bd2 Qb6+–) 18...Rc6 19.Bb4 Qb6 20.Qd5 Nf7 21.Bb5 Rc7 (21...Nfe5 22.Rad1 Qb7 23.Bd6+–) 22.Qa8 (better is 22.Rfd1 Nfe5 23.Ba5 Qc5 24.Bd7 Nd7 25.Qe6 Qe7 26.Qe7 Ke7 27.Bc7 Re8+–) 22...Nd8 23.Qa4 Ra7 24.Bd7 Rd7 25.Rfd1 Qc6 26.Rd7 Qd7 (26...Qa4?? 27.Re7 Kf8 28.Ra7 Qb4 29.ab4+–) 27.Qd7 Kd7 28.Rd1 Kc6 29.Rd6 Kb5 30.Rd7 (30.Rd5 Kc6 31.e4 Re8+–) 30...Rg8 (30...Ne6 31.Rb7 Kc4 32.e4+–) 31.Kf1 Nc6 32.Rf7 (32.Bd6 Rd8 33.Rd8 Nd8+–) 32...Nb4 33.Rb7 (< 33.ab4 Kb4 34.Rd7 Kc5+/–) 33...Ka4 (33...Kc5 34.ab4 Kc6 35.Re7+–) 34.ab4 (34.Rb4?! Ka3 35.Rb7 Ka4+/–) 34...Kb3 35.Ke2 Kc3 36.e4 h5 37.Ke3 Kc4 38.Kf4 (38.b5 Ra8+–) 38...g6 (38...Ra8 39.b5+–) 39.Rf7 (39.b5 Rd8+–) 39...f5 40.ef5 gf5 41.g3 (41...Kb4 42.Rf5+–; < 41.Kf5 Rg2 42.f4 Kb4+/–) 1–0. Garbacki – Roczniak,Jan, corr 1. AMM Poland, 1991.

9.a3 Bd6 10.Qh5 0–0 11.Ne4 b5 12.Ba2 c5 13.Ng6 Bf5 14.Qf3?? hg6?? 15.Nd6+/– Qd6 16.Qa8 Nc6 17.Qa6 Rb8 18.0–0 Ng4 19.f4 Bc8 20.Be5 Qd7 21.Qc6 Qc6 22.Bb8 Bb7 23.Rf3 Qf6 24.Be5? (24.Rb1 Qh4 25.f5 Bf3 26.Bg3–+) 24...Ne5 (better is 24...Qh4 25.f5 Bf3–+) 25.fe5+– Qe5 26.Bf7 Kf8 27.Raf1?? (better is 27.d4 Qe7 28.d5+–) 27...Bf3–+ 28.Rf3 Qa1 29.Kf2 Qa3 30.Bc4 Ke7 31.Bb5 Qb2 32.Be2 (32.Ba4 Qd2 33.Kf1 Qa2–+) 32...Qd2 (better is 32...a4–+) 33.Rf4 Ke6 34.Rc4 Kd6 (34...Kd6 35.h3 g5–+) 0–1. lines (Kolbusz and Roczniak), 1965.

9.a3 Bd6 10.Qh5 f7 seems the pivot of the position 10...0–0 11.Ne4 b5 12.Ba2 c5 (12...Be5 13.Qe5 Nf5 14.Qf4+=) 13.Ng6 (13.Rc1 Be6 14.Be6 fe6+–) 13...Bf5 (better is 13...Re8 14.Nd6 Qd6=) 14.Qf3?? (14.Nd6 hg6 15.Qf3 Ra6 16.Nb5 Rb6+/–) 14...hg6?? (better is 14...Bg4 15.Nf6 gf6 16.Qa8 hg6–/+) 15.Nd6+/– Qd6 16.Qa8 Nc6 17.Qa6 Rb8 Black threatens Bc8 18.0–0 Ng4 (18...Qc7 19.Bd5 Ne7 20.Bf7 Nf7 21.Bc3–+) 19.f4= Bc8 20.Be5 Qd7 (20...Ba6? 21.Bd6 Rd8 22.Bc5 Rd2 23.Rfd1+–) 21.Qc6 Qc6 22.Bb8 Bb7 Threatening mate... how? 23.Rf3 Qd7 (better is 23...Qf6!? 24.Rb1 Qh4–+ (24...Bf3?! 25.gf3 Qd8 26.fg4–+)) 24.Rg3–/+ c4 (24...Qd2?! 25.Rg4 c4 26.Be5 Qe3 27.Kh1=) 25.a4 Nf6 26.ab5 Qb5 27.Be5 Ne4 28.Rg4 (28.Rf3 Nd2 29.Rf2 Qd5–+) 28...Nd2 29.h3 Be4 30.Bc3 Nb3 (30...Bf5 31.Rh4 Qd5 32.Kh2–+) 31.Rd1 f6 32.Rh4 (32.Kf2 Kf7–+) 32...Qb6 (32...Qa4!? 33.Rd8 Kf7 34.Rhh8–+) 33.Kf2 a4 34.g4? (34.Rg4 Qc6–+) 34...Bd3 (34...g5 35.Rh5 gf4 36.Bd4–+) 35.Re1? (better is 35.g5–+) 35...Qd6 (35...g5 36.fg5 Nc5 37.Bd4 Ne4 38.Kf3–+) 36.Rd1 (36.g5 Nc5 37.Bd4 Ne4 38.Kg1 Ng5–+) 36...Qa3 (36...g5 37.Rh5–+) 37.Bb1 Nc5 38.Bd4 Ne4 39.Kg2 Qb3 40.Bd3 cd3 41.Rc1 Qa2 42.Kf3 Nd2 (42...f5 43.gf5 gf5 44.Rc8 Kf7 45.Rc2 Qc2 46.Bg7 Qe2) 43.Kg3 Nc4 44.Bc3 (44.f5 d2 45.Rg1–+) 44...Qc2!! 45.Rc2 dc2 (45...dc2 46.Kf2 c1Q–+) 0–1. Drozd,Hans – Roczniak,Jan, corr Poland, 1964.

9.d4 b5 10.Bd3 Bf5 11.0–0 Bd3 12.Nd3 0–0 13.Nb4 (13.Qf3 Qg5+=) 13...ab4= 14.Ne4 Nd7 (14...Qd5 15.Nc5+=) 15.Qf3 f5 16.Nd2 (16.Nd6 Qc7 17.Qf4 Nf7 18.Nf5 Qf4 19.ef4 Nd8=) 16...Qb6 (16...Ne5! 17.Qe2 Ng6+=) 17.Rfc1+/– Rfc8 18.Nb3 g6 (18...Qc7 19.a3+/–) 19.Nc5 Nc5 20.Rc5 Nf7 21.Qg3 Nd8 (21...Qc7!? 22.Qf3 Qb6+/–) 22.Rf5+– Ne6 23.Rf6 Nc7? (better is 23...Re8+/–) 24.e4+– Rf8 (24...Kh8 25.a3 ba3 26.Ra3 Ra3 27.Qa3 b4+–) 25.Rg6! (25...hg6 26.Qg6 Kh8 27.d5 Qd4 28.Bd4 Rf6 29.Bf6) 1–0. Kozun,Piotr – Roczniak,Jan, corr 1. AMM Poland, 1991.

9.Qh5 0–0 10.a3 Be7 11.Ne4 b5 12.Ba2 c5 13.g4 (13.d3!?=) 13...c4 14.g5 White fights for the Initiative 14...Nf5 15.Rg1 (15.d3 A) 15...cd3? 16.Bf7 Rf7 17.Qf7 (17.Nf7 Qd5 18.Nh6 Nh6 19.Qe8 Bf8 20.gh6 d2 21.Kd1 Qb3 22.Ke2 Qb2 23.Nd2 Na6–/+) 17...Kh8 18.Ng3+–; B) 15...Bb7=+) 15...g6 (better is 15...Be6!?–/+) 16.Qf3 Ra6 (16...Bb7 17.a4 Bb4=+) 17.Ng4 h6 (17...c3 18.Bc3 b4 19.Qf5 bc3 (19...Bf5?? 20.Nh6) 20.Nh6 Kg7 21.Qe5 f6 22.Qb8 Rb6+–) 18.Nef6+– Bf6 19.Nf6 (19.gf6?! Kh7=; 19.Bf6?! Qb6+/–) 19...Rf6 20.gf6 (20.Bf6!? Qd6 21.Bb1+–) 20...Qd6+/– 21.0–0–0 Be6 22.e4 (22.Bb1 Kh7 23.Bf5 Bf5 24.d4 cd3 25.Kd2=) 22...Qd3?? (better is 22...Nd4 23.Qe3 Rd8+/–) 23.Qd3+– cd3 24.Be6 (24.ef5?! Ba2 25.fg6 Rc8 26.Bc3 b4+–) 24...fe6 25.Rg6 (< 25.ef5 ef5 26.Rg6 Kf7 27.Rg7 Ke6 28.Re1 Kd5+–) 25...Kf7 26.ef5 (26...ef5 27.Rg7 Ke6 28.Re1 Kd5 29.Re5 Kc6 30.f7+–) 1–0. Pietrzak,Janusz – Roczniak,Jan, corr 1. AMM Poland, 1991.

8.Ne4 Nf6

9.Qf3 Be7 +=.

9.Nf6 gf6 10.Nd3 Bd6 11.Qf3 Attacks the isolani on f6 11...Nd7 12.Qe4 Qe7 13.Qe7 Ke7 14.f4 Nc5 15.Nc5 Bc5 16.Bd3 Bd7 17.Rc1 Bd6 18.Kf2 b5 (18...Rad8 19.Be4+=) 19.g4 h6 20.g5 (better is 20.Be4!? Rac8 21.g5 hg5 22.fg5+=) 20...hg5+= 21.fg5 Rh2 (better is 21...fg5!? 22.Bh8 Rh8+=) 22.Rh2+= Bh2 23.Bf6 Kd6 24.Be4 Exerts pressure on the backward pawn 24...Re8 25.d3 (25.Bf3 Be5 26.d4 Bf6 27.gf6 Rh8+=) 25...Be5= 26.Be5 Re5 27.g6 fg6 28.Bg6 Rc5 (28...Rg5 29.Be4+=) 29.Rc5= Kc5 30.Bf7 b4 31.Bc4 (31.Kf3 a4 32.Ke2 Bg4 33.Kd2 Bf3=) 31...Kd6 32.Ke1 Be6 33.Be6 Ke6 34.Kd2 c5 35.Kc2 a4 36.d4 (36.Kc1 Kd5+=) 36...c4 (36...cd4!? 37.ed4 Kd6–/+) 37.a3+= b3 (37...ba3 38.e4–/+) 38.Kc3= Kd5 39.Kb2 Ke4 Do you see the mate threat? 40.Kc3 Kd5 ½–½. Woda,Jan – Roczniak,Jan, corr Poland, 1967.

9.Nf6 Qf6 10.a3 Bf8 11.Bc4 +=.

9.Ng5 0–0!? =.

9.Ng5 Be6

10.Ne6+= fe6 11.a3 Bd6 12.Qb3 Qe7 13.Bc4 a4 14.Qa2 Nd5 +=.

10.Ne6 fe6 11.a3 Bd6 12.Qb3 Qe7 13.Nc4 Ne4 +=.

10.Ne6 fe6 11.a3 Bd6 12.Qb3 Qe7 13.Be2 a4 14.Qc2 Nbd7 15.d4 0–0 16.0–0 Nd5 17.g3 (17.Bd3 N5f6+=) 17...Be5 18.de5 Rf7 (18...Qc5 19.Rac1 Qc2 20.Rc2+=) 19.Bd3+= Nf8 20.e4 Nc7 21.f4 Nd7 22.Rac1 g6 (22...Nb5 23.Bb5 cb5 24.Qc7+=) 23.Bc4 (23.f5 ef5 24.Bc4 Ne6 25.ef5 gf5 26.Rf5 Raf8 27.Rf7 Qf7+/–) 23...Qc5 (23...b5 24.Ba2 c5 25.f5+=) 24.Kg2+/– b5 25.Ba2 (25.Bd3 Qc2 26.Rc2 c5+/–) 25...Qc2 26.Rc2 c5 27.Rd1 c4 28.Rcd2 Nc5 29.Bb1 N7a6 30.Rd8 (30.Bc3 Rb8+=) 30...Rd8= 31.Rd8 Kg7 (31...Rf8 32.Rd4=) 32.f5 h5 (32...Rf8 33.f6 Kf7 34.Rd4=) 33.Rd6 (33.f6 Kh7+=) 33...Rf8 34.Bd4 (< 34.fe6 Re8=+) 34...Nb3? (better is 34...gf5!? 35.ef5 ef5 36.e6 Kg8+=) 35.Be3 Nac5 36.f6 Kf7+/– 37.Rc6 Nd7 38.Rc7 Rd8 39.Rb7 Na5 40.Rb5 Nc6 41.Bf4 Nd4 42.Rb4 g5 43.Rc4 (43...Nb5 44.Ra4 gf4 45.gf4+/–; 43.Bg5!? Ne5 44.Ra4+–) 1–0. Sternik,Ryszard – Roczniak,Jan, corr Poland, 1991.

10.Ne6+= fe6 11.a3 Bd6 12.Qb3 Qe7 13.Be2 a4 14.Qc2 Nbd7 15.d4 0–0 16.0–0 Nd5 17.g3 (17.Bd3!? g6 18.Nc4+=) 17...Be5 18.de5 Rf7 (18...Qg5 19.Rab1=) 19.Bd3 Nf8 20.e4 Nc7 21.f4 Nd7 22.Rac1 g6 (22...Nb5 23.Bb5 cb5 24.Qc7=) 23.Bc4 (23.Rf3 Nb5 24.Bb5 cb5+=) 23...Qc5 (23...b5 24.Bd3 c5 25.f5+=) 24.Kg2 (24.Qf2 b5 25.Qc5 Nc5 26.Bb5 cb5 27.Rc5 b4 28.ab4 a3+–) 24...b5+= 25.Be2 Na6 (25...Qc2!? 26.Rc2 c5+=) 26.Qd3+/– Qb6 27.Qd6 (better is 27.f5+/–) 27...Nf8? (27...Qe3 28.Bf3 Qb3+–) 28.Rc6 Qb7 (28...Qe3 29.Qd3 (29.Ra6?! Qe2 30.Rf2 Qe4 31.Kh3 Rc8=; 29.Bb5?! Qe4 30.Kf2 Rb8+–) 29...Qd3 30.Bd3+–) 29.Rb6 (29...Qe4 30.Bf3 Qc2 31.Rf2+–) 1–0. Sternik,Ryszard – Roczniak,Jan, corr Poland, 1991.

10.Ne6+= fe6 11.a3 Bd6 12.Qb3 Qe7 13.Be2 (13.d4 a4 14.Qc2 0–0+=) 13...a4 14.Qc2 Nbd7 15.d4 0–0 16.0–0 Qe8 (16...Nd5 17.Bd3 g6 18.Nc4+=) 17.g4 (better is 17.Rab1+=) 17...Qg6?? (better is 17...Qe7=) 18.Bd1 (better is 18.Ng6!? hg6 19.f4 g5 20.fg5 Nd5+–) 18...Qf7?? (18...Qc2 19.Bc2 Be5 20.de5 Ng4 21.Rac1–/+) 19.Nd3 (better is 19.Nf7 Rf7 20.Qc4+–) 19...Nb8 20.f3? Be7?? 21.Re1 g5 22.Rc1 (22...Bd6 23.Nc5+=). Sternik,Ryszard – Roczniak,Jan, corr Poland, 1991.

7.e3 Be6

8.a3 Bc3 9.Bc3 f6?? 10.Qh5+– Kf8 11.Ng6! hg6 12.Qh8 Qd5 (12...Bd5 13.d4+–) 13.Rb1 b6 14.f3 (14.Rb5 Qd6+–) 14...Qd6 (14...Qh5 15.Qh5 gh5 16.d4+–) 15.Bb2 Nc6 16.Rc1 Rd8 17.d4 Nce7 (17...Kf7 18.Bb5 Nge7 19.Qh7+–) 18.Be2 Nf5 19.Kf2 (19.e4 Nd4 20.Bd3 Nb5+/–) 19...Kf7 (19...Ke7 20.Bd3 Ngh6 21.Qh7+–) 20.d5 (20.Qh7 Nge7+–) 20...Bd7? (20...Bd5 21.e4 Nge7+–) 21.e4 Nfe7 22.Qh4 (22.Qh7 c6 23.dc6 Nc6+–) 22...Nh6 (22...c6 23.dc6 Nc6 24.Rhd1+–) 23.Qg3 Qg3 24.hg3 c5 25.Rb1 (25.Ke3 g5+–). Brzoza,Miroslaw – Roczniak,Jan, corr, 1993.

8.a3+= Bc3 9.Bc3 f6?? 10.Qh5+– Kf8 (10...Ke7 11.Ng6! hg6 12.Qh8+–) 11.Ng6! hg6 12.Qh8 Qd7 (12...Qd5 13.Qh4+–) 13.Be2 b6 (13...Nc6 14.Rb1 b6 15.0–0+–) 14.0–0 Nc6 (14...Na6 15.d4+–) 15.Rfc1 Rd8 16.Bb5 (16.d4 Bd5+–) 16...Bd5 17.f3 Qd6 18.d4 Nce7 (18...Kf7 19.e4 Nge7 20.Qh7+–) 19.Be1 c6 20.Bd3 Qe6 (20...Kf7 21.Bg3 Qe6 22.Re1+–) 21.e4 (21.Bf2 Bb3+–) 21...Bb3 22.Bf2 c5 23.d5 Qc8 24.Rab1 a4 25.Bc4 Bc4 26.Rc4 Qa6 27.Rc3 Qa5 28.Be1 Qa6 29.Bg3 Rd7 30.Rb2 Ra7 31.Bf4 g5 32.Bg3 Ng6 33.Bd6 N6e7 34.Rc5! Kf7 35.Qh5 (35...g6 36.Qh7 Ke8 37.Be7 Ne7 38.Rcb5+–; 35.Rcb5 Rd7 36.Qh5 Ng6 37.Rb6 Qc4+–) 1–0. Brzoza,Miroslaw – Roczniak,Jan, corr 2. AMM Poland, 1994.

8.a3+= Bc3 9.Bc3 Nf6 +=.

8.a3+= Be7 9.Bc4 Nd7 10.Qa4 =.

8.a3+= Be7 9.Qf3 c6 10.Qg3 +=.

8.a3 Bf8 +=.

8.Bc4 Bc4 9.Nc4 Nf6 10.Qf3 c6 (10...Nc6+=) 11.Qg3 (11.Ne4!? Ne4 A) 12.Bg7? Nd2 (< 12...Bd2 13.Ke2 Nc3 14.Bc3 Bc3 15.Rad1–+) 13.Nd2 Qd2 (13...Bd2 14.Ke2 Rg8 15.Qe4 Qe7 16.Qh7 Rg7 17.Qg7=) 14.Kf1 Qd3 15.Kg1 Rg8–+; B) 12.Qe4 Kf8 13.0–0+=) 11...0–0 (11...b5 12.Qg7 Rg8 13.Qh6 bc4 14.Rg1–+) 12.Ne4 Nbd7 13.a3 (13.Ncd6 b5=) 13...Be7 14.Ncd6 (14.0–0 b5 15.Ncd6 Nh5+=) 14...Bd6 15.Nd6 Qc7 (15...Nc5 16.0–0=) 16.Nf5+= Qg3 17.Ng3 (17.hg3 Rfd8+=) 17...Rfe8= 18.0–0 (18.Nf5 Re6=) 18...b6 (18...Rad8 19.Rab1=) 19.Rfc1 (19.Rab1 b5=) 19...c5 20.Rab1 Ng4 (20...Re6 21.d4=) 21.Nf5 g6 22.Nd6 Re6 23.Nb5 Rc8 24.d4 Ngf6 25.Rc2 Kf8 26.Rbc1 h5 27.dc5 Nc5 28.Nd4 Rd6= 29.Nb3 Rcd8 30.Nd4 Nd3 31.Nb5 Nc1 32.Nd6 Rd6 33.Rc1 Ke7 34.Bd4 Ke6 35.f3 Kd5 36.Kf2 Nd7 37.Ke2 Nc5 38.Bc5 bc5 39.Rd1 Ke5 40.Rd6 Kd6=+ 41.Kd3 a4 42.Kc4 h4 43.e4 f5 44.ef5= gf5 45.g4 fg4 46.fg4+– h3? 47.Kb5 Ke5?? 48.Kc5= Kf4 49.Kd4 Kg4 50.Ke4 ½–½. Gajda,Leszek – Roczniak,Jan, corr 2. AMM Poland, 1994.

8.Bc4 Nd7 9.Be6 Ne5 10.d4 =.

8.Be2 Nd7 9.Qa4 c6 10.Nf3 =.

8.Be2 Nd7 9.Qa4 Qg5 10.Nd5 (10.a3 Qg2 11.Bf3 Bc3 12.Bg2 Bb2 13.Nd7 Kd8 14.Qh4 Kd7+–) 10...Bd6 (10...0–0–0 11.Nb4 Ne5 12.g3 ab4 13.f4 Nd3 14.Bd3=) 11.Nd7 (11.h4 Qg2 12.Bf3 b5+–) 11...Bd7 12.Qe4 Kf8 (12...Be6 13.Nf4 Bf4 14.ef4+=) 13.f4 Qh4 (13...Bf5 14.Qf3 (< 14.fg5 Be4 15.Bf3 Bd3=) 14...Qh4 15.g3+=) 14.g3 Qd8 15.0–0 f6 (15...Ne7 16.Ne7 Be7 17.Qb7–+) 16.f5 (16.Bd4 c6 17.Nb6 Rb8+/–) 16...Bc6= 17.Qc4 (17.Bc4 b5 18.Bb3 a4=) 17...Bg3 18.Ba3 (18.hg3 Bd5) 18...Bd6 19.Nf4 Bd7 (19...Qd7 20.Ne6 Ke8 21.Bd6 cd6 22.Bh5 Ke7 23.Ng7=) 20.Bd6 cd6 21.Qd5 (21.Rab1 Rc8 22.Ne6 Be6 23.Qe6 Qc7=) 21...Ne7 22.Ne6 (< 22.Qd6 Bf5 23.Qd8 Rd8–/+) 22...Be6 23.Qe6 h5 24.Rac1 Rb8 25.Rc3 d5 26.Rfc1 b5?? 27.Rc7+– Qe8 28.Bb5!! Rb5 29.Rc8! Rb8 30.Re8 Re8 31.h4 Rh7 32.Rc7 (32...a4 33.Ra7+–) 1–0. Blaszczak,Jan – Roczniak,Jan, corr 2. AMM Poland, 1993.

8.Be2 Nd7 9.Nd7 Qd7 10.a3 Bf8 +=.

8.Be2 Ne7 9.0–0 0–0 10.a3 Bc3 11.dc3 +=.

8.Be2 Ne7 9.0–0 Nd7 10.Ne4 (10.Nb5 0–0+=) 10...Ne5= 11.Be5 f6 12.Bb2 (12.Bd4 0–0=) 12...Qd5 (12...0–0 13.d4=) 13.Bh5 Ng6 14.Bf3 (14.d3 0–0+=) 14...Qd3= 15.Nf6? (15.a3 Bb3 16.Qc1+/–) 15...gf6–/+ 16.Bf6 Rf8 (16...0–0 17.Bb7 Rab8 18.Qf3 Rb7 19.Qb7 Rf6 20.Qc7 Qd2 21.a4–+) 17.Bb7 Rb8 18.Bc6 Bd7 (18...Kf7 19.Qf3 Kg8 20.Rab1–/+) 19.Qf3 (19.Bd7 Qd7 20.Bd4 c5–/+) 19...Be7 (19...Qd2 20.Rad1 Rf6 21.Qf6+–) 20.Bd7 Qd7 (21.Rab1 Rb1 22.Rb1 Bf6 23.Qa8 Kf7 24.Qa5 c5–+; 20...Kd7?! 21.Qg4 Kd8 22.Qd4 Qd4 23.Bd4=+) 0–1. Pegiel,Marek – Roczniak,Jan, corr Poland, 1993.

8.Be2 Ne7 9.Bf3 c6 =.

8.Be2 Nf6 9.Bf3 c6 10.0–0 =.

8.Ne4 f6? 9.Qh5+– Kf8 10.Ng6! hg6 11.Qh8 Qd5 12.Nc3 (12.a3 Be7 13.Ng3 Qb3+–) 12...Bc3 (12...Qh5 13.Qh5 gh5 14.a3+–) 13.Bc3 Nc6 (13...Qh5 14.Qh5 gh5 15.d4+–) 14.Qh4 Nge7 (14...g5 15.Qa4+–) 15.e4 Qd6 (15...Qd8 16.Rb1 b6 17.a3+–) 16.Be2 (16.Qh8 Ng8 17.a3 Kf7+–) 16...Rd8 (16...Kg8 17.Rb1 b6 18.a4+–) 17.0–0 b6 (17...Nd4 18.Bd4 Qd4 19.Rac1+–) 18.d4 g5 (18...Qa3 19.d5 Qc3 20.de6+–) 19.Qh8 Bg8 20.Rfd1 (20.d5 Ng6 21.Qh5 Nf4+–) 20...Ng6 21.Qh3 Nb4 22.e5 Qe7 23.a4 Nf4+/– 24.Qf3 Bd5 25.Bb4 ab4 26.Qe3 Bg2 27.Bf3 Bf3+= 28.Qf3 fe5 29.de5 Rd1 30.Rd1 Qe5 31.Qc6 Qe7 32.Kh1 Qe8=+ 33.Qe8 Ke8 34.Rd4 b3 35.Rb4+/– Kd7 36.Rb3 Kd6 37.Rg3 Ne6 38.Rg4 c5 39.Kg2 Kd5 40.Kf1 c4 41.Ke1 Nc5 42.Rg5 Kd4 43.Kd2?? Ne4–+ (44.Kc1 Ng5–+) 0–1. Sternik,Ryszard – Roczniak,Jan, corr Poland, 1993.

8.Ne4 Nf6 9.Nf6+= Qf6 (9...gf6 10.Nf3+=) 10.Qc2 (10.Qa4 Nd7 11.Nd3 Qh4+=) 10...Qe7 (10...Qd8 11.Bb5 c6 12.Bd3=) 11.Bb5 Kf8 12.a3 Bd6 13.Qc3 (13.Nc4 Qg5 14.Nd6 cd6+=) 13...Be5 (13...Qg5 14.Nf3 Qg6 15.Bd3+/–) 14.Qe5 f6 15.Qc3 c6 (15...Kf7 16.d4+=) 16.Be2 Kf7 17.Bf3 (17.Bh5 g6 18.Be2 Kg7+/–) 17...Nd7 18.d4 Qd6 (18...Bd5 19.Bd5 cd5 20.Qb3+=) 19.0–0 (19.Bh5 Kg8+=) 19...Nb6 (19...Rhd8 20.Qc2 Kg8 21.Be4+=) 20.e4 (20.Rfb1 Nc4+/–) 20...Rhd8+= 21.Qc2 Nc4= 22.Rfd1 Nb2 23.Qb2 Rab8 24.Rac1 Kg8 25.Qc3 a4 26.Be2 Rdc8 27.Bc4 b5 28.Qb4 Rd8 29.Qd6 Rd6 30.Be6 Re6 31.d5 cd5 32.ed5 Rd6 33.Rd4 b4 34.ab4+/– a3 35.Ra1 Ra8 36.Rd3 Rb6 37.Rb3 Rd8 38.Raa3 Rd5 39.Ra8 Kf7 40.h4 Rb7 41.g3 Rdb5 42.Ra4 h5 43.Kf1 Re5 44.Ra2 Rb6 45.Re2 Reb5 46.Re4 g5 47.Ke2 Rd5 48.Ke3 f5 49.Rd4 Re6 50.Kd3 Rd4 51.Kd4 gh4 52.gh4 Re4 53.Kd5 Rh4 54.b5 Ra4? 55.b6 Ra8 56.b7 Rb8 57.Kc6 Kg6 58.Kc7 Rh8 59.b8Q Rb8 60.Kb8 (60...h4 61.Kc7+–; 60.Rb8 h4+–) 1–0. Sternik,Ryszard – Roczniak,Jan, corr 2. AMM Poland, 1994.

8.Ne4 Nh6 9.a3 Be7 10.Qa4 Nd7 11.Nc6 bc6 12.Bg7 +/–.

8.Qf3 Ra7 +=.

8.a3 Bd6

9.Qa4 c6 10.Ne4 f6 11.Nc4 Be7 (11...Bc7 12.Nc5 Bc8–/+) 12.Qb3+/– b5 (12...Bc8 13.Nb6 a4 14.Na4+/–) 13.Ncd6 Bd6 14.Qe6 Be7 15.Be2 (15.Nc5 Nh6+/–) 15...Qd7+= 16.Qb3 a4 17.Qc2 Nh6 18.0–0 0–0 19.Rac1 (19.d4 f5 20.Nc5 Bc5 21.Qc5 Na6+/–) 19...Qd5 (19...Rd8+=) 20.Nc5 (20.d4!?+/–) 20...Bc5= 21.Qc5 Qd2 22.Rc2 Qd7 23.Rd1 Qf5 24.Bf3 (24.Bd3 Qc5 25.Rc5 Re8=) 24...Qc5 25.Rc5 Ra6 26.Rdc1 (26.Bd4 Rd8=) 26...Rd8=+ 27.Bd4 (27.Bc6? Rc6 (27...Nc6 28.Bf6 gf6 29.Rh5–+) 28.Bd4 Rdd6–+) 27...Rd6 28.R5c2 Nf5 29.Bc5= Re6 30.Rd2 Kf7 31.Bg4 g6 32.Bf5 gf5 33.Rcd1 Re5 34.Bd6 Re8 35.Bb8 Rb8=+ 36.Rd7 Kg6–/+ 37.Rc7 b4–+ 38.ab4 Rb4 39.g3 a3 40.Rdd7 h6 41.Kg2?? a2 42.h3 a1Q 43.Rh7 Qe1 (44.Rcd7 Ra2 45.Rdg7 Kh5 46.g4 fg4 47.Rh6 Kh6 48.Rg6 Kg6 49.hg4 Qf2 50.Kh3 Qh2) 0–1. Szczesiak,Zenon – Roczniak,Jan, corr 2. AMM Poland, 1994.

9.Nb5 Be7 10.Qf3 c6 11.Nf7 (11.Nd4 Bd5 12.e4 Bf6 13.ed5 Be5 14.dc6 Bd4 15.Qe4 Kf8 16.cb7 Bf2 17.Kf2 Ra7+–) 11...Bf7+= 12.Bg7 Bf6 13.Qe4 Kd7 14.Bh8 Bh8 15.Rd1 (15.Qd3 Ke7 16.Qd8 Kd8 17.Nc3+=) 15...Na6? (15...Bg6 16.Qg4 Ke7 17.Qg5 Nf6 18.Qe5 Kd7+/–) 16.Qh7+– Qf6 17.Nc3 Bg7? (better is 17...Ke8+–) 18.Ba6 Ra6 (18...ba6 19.Ne4 Qh6 20.Nc5 Ke7 21.Qh6 Nh6+–) 19.Ne4 Qg6 20.Nc5 (20...Kd6 21.Qg6 Bg6 22.Na6+–) 1–0. Kuperski,Marek – Roczniak,Jan, corr 2. AMM Poland, 1994.

9.Nb5 Nf6 10.Nd6 Qd6 11.Nc4 +=.

9.Nb5 Nf6 10.Nd6 Qd6 11.Be2 (11.Nc4 Qd8+=) 11...0–0= 12.Qc2 Nbd7 13.Nd7 Nd7 14.Bf3 (14.Rc1 c6+=) 14...c6= 15.Rc1 Bd5 (15...f5 16.0–0=) 16.e4+= Be6 17.d4 Nb6 18.0–0 f5 (18...Nc4 19.d5 cd5 20.ed5 Bd5 21.Rfd1+–) 19.Qc5 (19.Rfe1 Qd7+=) 19...Qc5= 20.dc5 fe4 21.Be4 Nc4 22.Rc2 Rad8 23.Re2 (23.Re1 a4+=) 23...Rd2 (23...Bf5 24.Bc3=) 24.Rd2+= Nd2 25.Re1 Re8 (25...Rd8 26.h3+=) 26.Bc3 (26.Bf5! Bf7 27.Re8 Be8 28.Bc3+/–) 26...Nb3= 27.Bc2 a4 (27...Nc5 28.Ba5 g6 29.Bb4=) 28.f4 (28.Re5!?+=) 28...Nc5+= 29.Ba5 (29.Re5 Nd7 30.Rg5 g6+=) 29...Nb3 (29...b5 30.Bb4 Nb3 31.Kf2+=) 30.f5 (30.Bb6!?+=) 30...Na5–/+ 31.Re6 (31.fe6 Nb3–/+) 31...Re6–+ 32.fe6 Nc4 (32...b5 33.Bh7 Kf8 34.Kf2–+) 33.Ba4 Na3 34.Kf2 (34.Bb3 Kf8–+) 34...Kf8 35.Ke3 Ke7 36.Bb3 Nb5 37.Ke4 Nc7 38.Ke5 b5 39.h4 g6 40.Bc2 Ne6 41.h5 gh5 42.Bh7 h4 43.Be4 (43.Bg8 Nc5–+) 43...Nd8 (43...c5 44.Bf5 Nc7 45.Be4–+) 44.Bd3 (44.Kf5 c5–+) 44...Nf7 45.Kf5 Kd6 46.Bc2 (46.Be4 b4–+) 46...c5 47.Kg4 b4 48.Kh4 c4 49.Kg4 (49.Kg3 b3 50.Bd1 Kc5–+) 49...b3 (49...b3 50.Bd1 Ne5 51.Kf4 Nd3 52.Ke3 Nb4–+) 0–1. Zich,Z – Roczniak,Jan, corr Poland, 1975.

9.Ne4 Be7 +=.

8.Be2 f6

9.Bc4 Bc4 10.Nc4 Nc6 =.

9.Nf3 Nc6 10.a3 Bc3 11.Bc3 (11.dc3 Qd1 12.Rd1 Nge7+=) 11...Qd6 (11...Nge7 12.e4+=) 12.0–0 Nge7 13.d4 Nd5 14.Bb2 Nb6 (14...Rd8 15.Qc2 f5 16.Bb5+=) 15.e4+/– Bc4 (15...Nc4 16.Bc3 Ne7 17.d5 Nd5 18.ed5 Bd5 19.Nd4+–) 16.d5 Be2 17.Qe2 Ne7 18.Nd4 0–0 19.a4 (19.Rac1 c6+/–) 19...c6 (better is 19...f5!? 20.Ne6 Rf7+/–) 20.Ba3+– Qd7 21.dc6 (21.Be7 Qe7 22.Rfb1 Qe5+–) 21...Qd4 (21...bc6 22.Rfd1 Qb7 23.Nf5 Nf5 24.Bf8 (24.ef5?! Rfe8 25.Qc2 Nd5=) 24...Rf8 25.ef5+–) 22.cb7 (22...Rae8 23.b8Q Rb8 24.Be7+/–; 22.Be7 bc6 23.Bf8 Rf8+–) 1–0. Dziel,Jaromir – Roczniak,Jan, corr 2. AMM Poland, 1993.

9.Nf3 Ne7

10.0–0 0–0 11.a3 Bd6 12.d4 +=.

10.0–0 Bc3 11.Bc3 0–0 12.Qb1 +=.

10.0–0 Bc3 11.Bc3+= 0–0 12.Qc2 +=.

10.0–0 Bc3 11.Bc3 Nd5 12.Qb3 b6 13.Bc4 (13.Nd4 Bf7+=) 13...Qd6 (13...a4 14.Bb5 c6 15.Ba4=+) 14.e4 (14.d3 a4 15.Qc2 Nc6+=) 14...Nc3 (14...a4 15.Qc2 Nc3 16.Qc3 Bc4 17.Qc4+=) 15.Be6 (< 15.dc3 a4 16.Qb5 c6 17.Qb6 Bc4–+; 15.Qc3?! Nc6+=) 15...Ne2 (15...Ne4? 16.Bd5 c6 17.Be4+–) 16.Kh1 Nf4 (16...Nc6 17.Bf7 Kd8 18.Bd5+=) 17.Bf7 Ke7 18.d4 (18.Bc4 Nc6+=) 18...Nc6 (better is 18...a4 19.Qc4 b5=+) 19.e5+= fe5 20.de5 Qh6 21.Rac1 (21.Bc4 Qg6 22.g3 Ne6+/–) 21...Rhc8 (21...Rhd8 22.Nh4 Qh4 23.Rc6+=) 22.Rfd1 a4 23.Qe6?? Ne6–+ (24.Rc6 Kf7–+) 0–1. Pegiel,Marek – Roczniak,Jan, corr Poland, 1993.

10.0–0 Bc3 11.Bc3+= Nd5 12.Qb3 (12.Nd4 Bf7+/–) 12...b6 (12...Ra7 13.Nd4 Bf7 14.Qa3+=) 13.Nd4+/– Bf7 14.Bb5 Kf8 15.Bb2 (15.Qc2 Kg8+/–) 15...c5+= 16.Nf5 (16.Nf3 Nb4 17.Qa4 Bd5+=) 16...Nb4 17.Qc3 (17.Qd1 Ba2 18.Qg4 Ra7+=) 17...Na2= 18.Qc2 Nb4 (18...Qd5 19.Ba3 Na6 20.d4–+) 19.Qe4 Bd5 20.Qh4 (20.Qg4 g6 21.Ng3 Bc6 22.Bc6 N8c6=) 20...Be6 (20...Bc6 21.Bc6 N8c6 22.d4=) 21.Ng3 (21.Qg4 Ra7=) 21...N8c6 22.Nh5 h6 23.Nf6 Qd2 24.Rab1 Rd8? 25.Nh5+– Rd7 26.Ng7 Bf7 27.Ne6!! Be6 28.Bh8 Qd6 29.Qh6 Kg8 30.Bf6 Bd5 31.Be2 Be4 32.Bc4 Bd5 33.Rfd1 Qe6 34.Bd5 Qd5 35.Rd5 Nd5 36.Qg6 Kf8 37.Bg7! Rg7 38.Qc6 Nb4 39.Qb6 (39...Kf7 40.Qa5+–) 1–0. Pegiel,Marek – Roczniak,Jan, corr 2. AMM Poland, 1994.

10.0–0 Nbc6!? =.

10.Nd4 Bf5 +=.

6.Nc3 Bc3

7.Bc3 f6

8.Qa4 c6 9.Ba5 Qe7 10.Nf3 Bf5 +=.

8.Qa4 c6 9.Qe4 fe5 10.Qe5 Ne7 11.Qg7 Rf8 =+.

8.Qa4 c6 9.Qe4 Qe7 10.Qh4?? (better is 10.Nc4+=) 10...fe5–+ 11.Qe7 Ne7 (11...Ke7 12.Be5 Nf6 13.d4–+) 12.Be5 0–0 (12...Kf7 13.e4–+) 13.e3 (13.e4 Be6–+) 13...Be6 14.Be2 (14.d4 Nd7 15.Bd6 Rfe8–+) 14...Ng6 15.Bg3 Nd7 (16.d4 Rae8–+; 15...Re8 16.e4–+) 0–1. Ewert,Jerzy – Roczniak,Jan, corr Poland, 1993.

8.Qa4 c6= 9.Nf3 Be6 10.Ng5 (10.Rb1 b5 11.Qc2 Ne7+=) 10...Bc8 (10...Bd5 11.e4 Qe7 12.Be2+=) 11.e3 (11.Ne4 Ne7=) 11...Ne7= (11...fg5? 12.Bg7 b5 13.Qb3+–) 12.Nf3 Be6 (12...b6 13.d4+=) 13.Qc2 Qd6 (13...Qd7 14.Nd4+=) 14.Bd3 h6 15.Nh4 (15.Bg6 Kd8+=) 15...0–0= 16.Ng6 (16.0–0 Re8+=) 16...Ng6 (16...Rf7 17.Nf4+=) 17.Bg6+= Rd8 18.0–0 Na6 (18...c5 19.Rab1 b6 20.Rfd1+=) 19.Bh5 (19.d4 Rab8+=) 19...Qd3 (19...Bc4 20.Rfc1 Bd3 21.Qb3 Qd5 22.Bd1=) 20.Qb2 (20.Qd3 Rd3 21.Be2 Rd7+=) 20...Nc5 (20...b5 21.Rfc1=) 21.Bd4 b6 22.Bc5 bc5 23.Rfd1 Rab8 24.Qc1 c4=+ 25.f4 Bd5 26.Kf2 g5 27.g3 f5 28.Be2 Qe4 29.Rg1 g4 30.Qc3 Kf7 31.h3? h5?? 32.h4 c5 33.Qa5 Rdc8 34.Qa7+= Kg6 35.Qa3 Rc7 36.d3?? cd3–/+ 37.Qd3 Qd3 38.Bd3 Rb2 39.Be2 Bc4 40.Rge1 Ba2 41.Rac1 Bd5 42.Kf1 c4 43.Bd3 Rd2 44.Bc2 Bg2 (45.Kg1 Bh3–+) 0–1. Gajda,Leszek – Roczniak,Jan, corr Poland, 1994.

8.Qa4 c6 9.Nf3 Ne7 10.Qb3 Nd5 11.e3 Nc3 12.dc3 Qe7 13.Bc4 b5 (13...Nd7 14.Nd4=) 14.Bd3 Be6 (14...g6 15.a4 Be6 16.Qb2 ba4 17.0–0+=) 15.Qc2+– Na6 16.a4 Nc5 17.ab5 Nd3 18.Qd3 c5 (18...Bd5 19.Rd1+–) 19.0–0 0–0 20.Ra6 Bg4?? (better 20...Rad8 21.Qe4 Rfe8+–) 21.Qc4+– Be6 22.Re6 Qf7 23.Qe4 Rae8 24.Re8 Re8 25.Qc6 Qe7 (25...Qf8 26.Ra1 Rd8 27.Qc7+–) 26.Rd1 h6 (26...Qf8 27.Rd7+–) 27.Rd7 Qf8 28.Qb7 (28.Nh4 Re7+–) 28...Rb8 29.Rg7! Kh8 (29...Qg7 30.Qd5 Double attack (30.Qb8 Deflection; 30.Qb8 Overloading)) 30.Qa7 (better 30.Rf7 Rb7 31.Rf8 Kg7+–) 30...Rb5 (30...Ra8 31.Rh7 Kg8+–) 31.Rh7 Kg8 32.g3 (32.Nd2 Ra5 33.Qd7 c4+–) 32...Rb1 (32...Ra5 33.Qd7 c4 34.Re7+–) 33.Kg2 Rb2 (33...Rb8+–) 34.Nh4 f5 35.Ng6 Qf6 36.Rc7 Qg6 (36...Rd2 37.Ne7 Kg7 38.Nd5 Qf7 39.Rf7 Kg6 40.Rg7 Kh5 41.Qf7) 37.Rc8 Qe8 38.Re8 1–0. DEFFM – safben, freechess.org, 2018.

8.Qa4 c6= 9.Nf3 Ne7 10.e4 =.

8.Qa4 Bd7 9.Nd7 Qd7 10.Qe4 Ne7 11.Qb7 Qc6 12.Qc6 Nbc6 13.g3 Kf7 14.e4 Rab8 (14...Rhd8 15.Rb1+–) 15.d4 Rhe8 16.Kd2 Nb4 (16...Rbd8 17.d5+–) 17.Rb1 Na2? (17...Nbc6+–) 18.Bc4 White prepares the advance d5 18...Kf8 19.Ba2 Nc6 (19...a5 20.Rhc1 Ra8 21.Rb5+–) 20.d5 Ne7 21.Ba5 Ng6 (21...c5 22.Rhc1+–) 22.Bc7 Rb1 23.Bb1 Re4 (23...Rc8 24.Rc1 Ra8+–) 24.Be4 (24.Be4 Ke8 25.d6+–) 1–0. Adlai – Spesjhp, internet, 2019.

8.Nd3 +=.

8.e3 fe5–/+ 9.Qh5 Kd7 10.Qf5 Ke8 11.Qe5 (11.Qh5 Kd7 12.Qf5 Ke8 13.Qh5 Kd7=) 11...Ne7=+ 12.Qg7 Rg8 (12...Rf8 13.Qh7 Bf5 14.Qh5 Ng6 15.Bc4=) 13.Qh7= Be6 14.Be2 (14.Qh5 Bf7 15.Qb5 Nbc6 16.Qb7 Bd5=) 14...Qd6 (14...Qd7 15.Bf3 Nbc6 16.d4=+) 15.Qh5 (15.Qd3 Nd5=+) 15...Bf7 16.Qb5 Nbc6 17.Bf3 b6 (17...Rb8 18.d4=+) 18.0–0 (better is 18.Bb4! Qb4 19.Bc6 Nc6 20.Qc6 Ke7 21.Qc7 Kf8 22.h4=) 18...a6=+ 19.Qe2 b5 (19...Bg6 20.d4=+) 20.Rfd1 (20.d3 Rd8–/+) 20...b4 (20...Rd8 21.d4–/+) 21.Bb2=+ a5 22.a3 b3 23.d4 a4 24.d5= Ne5 25.Be5+/– Qe5 26.d6 Rd8 27.dc7 Rd1 28.Rd1 Qc7 29.Qb5 Kf8 30.Qa4 b2 31.Be4 Bg6= 32.Bb1 Bb1 33.Rb1 White fights for the Initiative 33...Qb7 34.f3 Rg6 35.Qd4+= Rb6 36.Kf2 Rb3 37.e4 Qb6 38.Qb6+/– Rb6 39.Ke3 Rb3 40.Kd2 Nc6 41.a4 Nd4 42.a5 Nb5+/– 43.Kc2 Nd4 44.Kd1 Nb5 45.a6 Kf7 46.a7+– Na7 47.Kc2 Rb7 48.Rb2 Rd7 49.Kc3 Ke6 50.Rd2 Nb5+/– 51.Kc2 Nd4 52.Kd1 Ke5 53.Ke1 Rh7 54.h3 Rc7 55.Kf2+– (55...Nb3 56.Rd5 Ke6 57.g4+–) 1–0. Wisniewski,Jan – Roczniak,Jan, corr 2. AMM Poland, 1993.

8.e4 Nd7?? 9.Qh5+– g6 10.Ng6! hg6 (10...hg6 11.Qh8 Pinning (11.Qh8 Deflection)) 11.Qh8 Kf7 (11...Ke7 12.Bc4 Kd6 13.d4+–) 12.Bc4 Ke7 13.Qg7 Ke8 (13...Kd6 14.Bg8 Qe8+–) 14.Qf7 1–0. GuestVZPY – GuestCXPM, freechess.org, 2020.

8.e4 fe5 9.Qh5 Kd7 10.Qf5 Ke8 11.Qe5 Ne7 12.Qg7 Rg8 13.Qh7 Qd6+=.

8.Nf3 Nc6 +=.

7.Bc3 Nf6

8.Qa4 c6 9.e3 (9.Qd4 Be6+=) 9...0–0 (9...Nbd7 10.Be2+=) 10.Be2+= Be6 11.0–0 Nbd7 (11...Nd5 12.Bd4=) 12.Nd7+= Nd7 13.Qc2 (13.Qf4 Re8+=) 13...Qg5 (13...Nb6 14.d3+=) 14.Bf3 (14.f4 Qh6+=) 14...Nb6 (14...Ne5 15.Be4 f5 16.Be5 fe4 17.Qe4=) 15.Be4 h5 (15...f5!? 16.f4 Qg6=) 16.f4+/– Qg4 17.Rf3 (17.d3 f5 18.Bf3 Qg6+=) 17...Qh4 (17...Bd5 18.Bf5 Bf3 19.Bg4 Bg4 20.Bd4+–) 18.Rg3 Bg4 (18...f6 19.f5 Bd5 20.Bd5 Nd5 21.d3+=) 19.Bf3 (19.d3 Rfe8+/–) 19...g6 (19...Rfe8+=) 20.Kf2 (better is 20.Bg4!? hg4 21.Bd4+/–) 20...Qh2=+ 21.Bg4 hg4 22.Rg4 Qh6 (22...Qh5 23.Rg5 Qh4 24.Ke2+=) 23.Rh1!! (23...Qh1 24.Rg6 Kh7 25.Rg7 Kh8 26.Rf7 Kg8 27.Qg6) 1–0. Gajda,Leszek – Roczniak,Jan, corr Poland, 1993.

8.Qa4 c6 9.e3 0–0 10.Qh4 Nd5+= 11.Qd8 (11.Qd4 f6 12.Nf3 Qe7=) 11...Rd8= 12.Bc4 Be6 13.Bd5 Bd5 14.0–0 (14.f3 f6 15.Nd3 Bc4=) 14...Nd7 15.Rfb1 Ne5 16.Be5 c5 17.Rb2 Rd7 18.Rc1 b6 19.a3 Be4 (19...Re8 20.Bf4+=) 20.Bc3 (20.f3 Bd3=) 20...Bd3+= 21.f3 f6 22.Kf2 Rad8 23.a4 h5 24.e4 Kf7 25.h4 Re8 26.Rg1 f5 27.e5 Re6 (27...f4 28.g3+=) 28.f4 (28.Ke3!?=) 28...a6+= 29.Ke3 (29.Ra1 Rg6+=) 29...b5–/+ 30.ab5 ab5 31.Ra2 (31.Ba5 Bc4 32.Rgb1 Rg6–/+) 31...b4 32.Bb2?? (32.Ba1–/+) 32...c4 (better is 32...Bc4 33.Ra5 Rd3 34.Ke2 Ra3 35.d3 Bd3 (worse is 35...Ra5 36.dc4 Ra2 37.Rb1–+) 36.Kd2 Ra5 37.Kd3 Ra2–+) 33.Bd4 b3 34.Rb2? Rg6–+ 35.g3 Rg4 36.Bc3 g5–+ 37.hg5 Be4 38.d4= Bc2 39.Kf2 h4 40.gh4 Rf4 41.Ke3? Rh4–/+ 42.Kf3 Be4 43.Kg3 Rg4 44.Kf2 Rf4 45.Ke2 Kg6 46.Rd2?? Rf3 47.Bb4 Rh7 48.d5 Rh2 49.Kd1 b2 0–1. purplegadge (1790) – yulio (1900), gameknot.com, 2014.

8.Qa4 Nbd7 9.Nd7 Bd7 10.Qf4 0–0 (10...Bc6 11.Bf6 gf6 12.d4+=) 11.Bf6 Qf6 12.Qf6 gf6 13.d4 Rad8 14.e3 Bc6 15.Kd2 (15.Bd3 Rfe8 16.Kd2 Bd5+/–) 15...a6 (15...f5 16.Kd3+/–) 16.Bd3 Bg2?? (better is 16...Rfe8+/–) 17.Rag1+– Kh8 18.Rg2 Rg8 19.Rg8 Rg8 20.Rc1 c6 21.Rb1 b5 22.Rc1 (22.Be4 Rc8+–) 22...Rg2 23.Ke2 Rh2 24.Rc6 Rh1 (24...b4 25.Rf6 Kg7 26.Ra6+–) 1–0. MT – guest2229, ICC, 2003.

8.Qb3 0–0 9.Bb4 Ne4 10.Rd1 (10.Qe3 Nd6=) 10...Qf6 (better is 10...Qd4 11.Nd3 Be6=+) 11.f3?? (11.Qe3 Re8 12.Qe4 Re5 13.Qc4=) 11...Qe5 (better is 11...Qh4 12.g3 Ng3–+) 12.Bf8+= (< 12.fe4 Re8=+) 12...Kf8 13.fe4 Qe4 14.Rc1 Qh4 (14...c6 15.e3+=) 15.g3+/– Qe4 (15...Qd8 16.Bg2 c6 17.Be4+/–) 16.Rc7+– Be6 17.Qa3 (17.Qc2!? Qc2 18.Rc2 Bd5+–) 17...Kg8+/– 18.Qd3 Qd3 19.ed3 Na6 20.Rb7 Bd5–+ 21.Ra7 Ra7 22.Rg1 Nb4 23.Kf2 Ra2 24.Ke3 g5 25.Bh3 Be6 26.Be6 fe6 27.Rf1 g4 28.Ke2 e5 29.Rf5 Ra5 30.Rg5 Kf7 31.Rg4 Nc6 32.Rg5 e4?? 33.Ra5–/+ ed3 34.Kd3 Ke6?? 35.Rh5+– (35...Ne7 36.Rh7+–) 1–0. Istvanny – Alex Raistrick, internet, 2007.

8.e3 0–0 9.Bc4 Nbd7 10.Nd7 Bd7 11.Qf3 Bc6 (11...Ne8 12.Rb1 Bc6 13.Qg4+=) 12.Bf6+/– Bf3? (better is 12...Qf6 13.Qf6 gf6+/–) 13.Bd8+– Rad8 (13...Bg2 14.Rg1 Rfd8 15.Rg2+–) 14.gf3 Rd6 15.d4 Re8 16.Rb1 Rd4 (16...b6 17.d5+–) 17.Be2 Rd6 18.Rb7 Red8 19.Rc7 Rb6 (19...a5 20.Rg1 g6 21.Rg5+–) 20.0–0 (20...a5 21.Rfc1+–) 1–0. anizan dolivia – nbh999, ChessWorld.net, 2003.

8.e4 0–0 9.Qb1 (9.Qf3 c5+=) 9...Re8 (9...Qd6!?=) 10.Bc4+/– Nbd7? (better is 10...Re7+/–) 11.Nf7+– Re4 (11...Qe7 12.Nd6 Kh8 13.Ne8 Qe8+–) 12.Qe4!! Qf8 (12...Ne4 13.Nd8 Discovered attack) 13.Bf6 Nf6 14.Qe5 Bd7 15.Qc7 b5 16.Bb3 Re8 17.Ne5 Be6 18.Bd1 (better is 18.Be6 Re6 19.d4+–) 18...Bc4 19.Bf3 Qb4 20.Rc1 Qb2 21.Kd1 (21.Rc3 Ne4 22.Rd3 Nd2 23.Bd5 (23.Rd2?? Re5 24.Qe5 Qe5 25.Kd1 Qa1 26.Kc2 Qh1–+) 23...Bd5 A) 24.Rd2 Qa1 (24...Re5?! 25.Kd1 Qb1 26.Qc1=) 25.Ke2 Re5 26.Kd3 Be4 (26...Qh1? 27.Qb8 Kf7 28.Qe5 Qf1 29.Kd4+–) 27.Ke3 Bg2 28.Kf4 Rf5 29.Ke3 Rf3 30.Ke2 Bh1 (30...Qh1?! 31.Rd1 Bf1 32.Rf1–+) 31.Rd8 Rf8 32.Rf8 Kf8 33.Qb8 Kf7 34.Qa7 Kg6–+; B) 24.Rd5 Qb1 25.Kd2 Qa2 26.Ke3 Qd5 27.f4+/–) 21...Re5+= 22.Qa7?? (22.Rc4 bc4 23.Qc4 Kh8 24.d4+=) 22...Ba2–+ Threatening mate: Bb3. 23.Rc8 Ne8 24.Qe3 Bb3 25.Ke2 Bc4 26.Ke1 Qa1 27.Bd1 Kf7 28.f4 (28.Rc5 Re3 29.fe3–+) 28...Re3 (28...Re3 29.de3 Qb2 30.Rc4 bc4–+) 0–1. mtra – Seaman2, internet, 2002.

8.e4 0–0 9.Qf3 Nbd7 10.d4 Qe7 11.Rd1 c5 12.Nd7 (12.Bc4!? cd4 13.Nd7 Ne4 14.0–0 Nc3 15.Nf8 Nd1 16.Rd1 Kf8 17.a3=+) 12...Bd7–/+ 13.dc5 Rfe8 (13...Ne4 14.Qe3 Rfe8–+ (< 14...Qc5 15.Qc5 Nc5 16.f3–/+)) 14.Bf6+= gf6 (14...Qe4 15.Qe4 Re4 16.Kd2 gf6 17.Bd3+=) 15.Qg3 Kh8 16.Bd3 Qc5 17.0–0 Rg8 18.Qh4 Qg5 19.Qg5 Rg5 20.Rd2 Rag8 21.f4 R5g7 22.Rc1 (22.Bc4 Bc6 23.Bd5 f5 24.Bc6 bc6 25.ef5 a5+/–) 22...Bc6+= 23.g3 h5 24.Rc5 Rh7 25.Kg2 h4 26.Kf3 hg3 27.hg3 Rh3 28.Rg2 Rg6 (29.Bc4 Kg7+/–) +/–. Alissa – nbh999, ChessWorld.net, 2003.

8.e4 0–0 9.Qf3 Nbd7 10.d4 Qe7 11.Bd3 Ne5 12.de5 Ng4 13.0–0 Ne5 14.Qg3 f6 15.Be5 Qe5 16.Qe5 fe5 17.Rfc1 c6 18.Rc5 Re8 19.Rd1 Be6 20.Re5 Ba2 21.Re8 Re8 22.Ra1 Rd8 23.Be2 Rd2 24.Kf1 a5?? 25.Ra2!! Rd4 26.f3 a4 27.Kf2 b5 28.Ke3 Rd8 29.Ra3 Kf8 30.f4 Ke7 31.e5 Ra8 32.Kd4 b4 33.Ra1 a3 34.Bc4 Ra5 35.Bb3 g6 36.Ba2 Rb5 37.Rb1 c5 38.Kc4 Ra5 39.Rd1 h6 40.Rd5 b3 41.Kb3! c4 42.Kc4 Ra4 43.Kd3! Rf4 44.Ke3 Rb4 45.Rd3 Rb2 46.Bd5!! a2 47.Ra3 Rb5 48.Kd4 Rb2 49.Ra2 Ra2 50.Ba2 1–0. Trkn – Thomas Lazar, itsyourturn.com, 2000.

8.e4 0–0 9.Qf3 Nbd7 10.Nd7 Nd7 11.Bc4 Qh4 +=.

8.e4 Nbd7 9.Qf3 0–0 10.d4 c6 (10...Qe7 11.Qf4=) 11.Bc4 (11.Be2 Ne5 12.de5 Nd7+=) 11...Ne5 (11...Qe7 12.Rc1=) 12.de5 Nd7 13.0–0 Qe7 14.Rfd1 b5 (14...Ne5?? 15.Be5 Qg5 16.Bd6+–) 15.Bb3 a5 Black prepares b4 (15...Ne5?? 16.Be5 Re8 17.Bd6+–) 16.a3 (16.Qg3 Nc5 17.Bc2 Be6+=) 16...Nc5 (16...Ne5? 17.Be5 Qg5 18.Bd6+–) 17.Bc2 Be6 18.Rd6 (18.Rab1 Nb7 19.Bd4 c5=) 18...b4 19.ab4 ab4 20.Ra8 Ra8 21.Bb4 Nb7 22.Rd4 c5 23.Ba3 Qg5 (23...Na5 24.Rd3+=) 24.Rd1+= Qe5 25.Rb1 Qc7 (25...Nd8 26.Bb2 Qg5 27.Bc1+=) 26.e5+/– Ra7 27.Be4 Na5 28.Qc3 Nb7 (28...Nb3 29.Rb3 Bb3 30.Qb3 Qe5 31.Bb2+/–) 29.Qd3 (29.h3 h6+/–) 29...h6 30.h3 Bc8 31.Rb5 Ra5 (31...c4 32.Qc3 Qd7 33.Rb1+/–) 32.Bb2 (32.Rb7 Bb7 33.Bb7 c4=) 32...Rb5 (32...Ra7!?+/–) 33.Qb5 Kf8 34.Bd5 Nd8 35.Ba3 Ne6 36.Be6 Be6 37.Qc5 (37.Bc5 Kg8 38.f4 Qd8+/–) 37...Qc5 38.Bc5 Kg8 39.f4 (39.f3 h5+/–) 39...h5 40.Kf2 Kh7 41.Ke3 Kg6 42.Be7 (42.Bf8 h4+/–) 42...Bd5 (42...Kf5 43.Bf8+=) 43.g4+/– f5 (43...hg4 44.hg4 Be6 45.Kf3+/–) 44.gf5 (44.gh5 Kh5 45.Kd4 Be6+–) 44...Kf5 45.h4 g6 ½–½. Ventimiglia,Charles (1760) – Athens,Jim (1700), IECC, 1998.

6.Nc3 Bd6

7.Qa4 c6 8.d4 f6 9.Nd3 (9.Nf3 Ne7=) 9...b5 (9...Ne7 10.e3=) 10.Qb3 (10.Qc2 Qa5+=) 10...a5 (10...Qe7 11.e3=) 11.e4 (11.Ne4 Bc7+=) 11...a4 (11...Qe7 12.f3=) 12.Qd1 (12.Qc2 a3 13.Bc1 Ne7+=) 12...Ne7 13.e5 fe5 14.de5 Bc7 15.Qh5 g6 16.Qg5? (16.Qh4 a3 17.Bc1 Bf5=+) 16...0–0 (better is 16...a3 17.Bc1 Qd4–/+) 17.Ba3 (17.Rd1 Nf5 18.Qd8 Rd8=) 17...Rf7 (17...Ba5 18.0–0–0 Nf5 19.Qd8 Rd8 20.Ne4=) 18.0–0–0 (18.Rd1 Qd4 19.Bb4 Nd5 20.Nd5 Qd5=+) 18...Nd5 (18...Qd4 19.Be7 Qc3 20.Kb1 Bf5–+) 19.Qd8+= Bd8 20.Nd5 cd5 21.Be2 (21.Bd6 Nc6+=) 21...Be6 22.Bd6 (22.f4 Na6=) 22...Nc6= 23.f4 (23.Kb1 Be7=) 23...Nd4 24.Bh5? (better is 24.Bf1 Rc8 25.Kb1=+) 24...gh5–+ 25.Nc5 Rf4 (25...Bb6 26.Ne6 Ne6 27.Rd5 Be3 28.Kb2 Rf4 29.Rb5 Rf2 30.Kb1 Rg2 31.Rb2 Rb2 32.Kb2–+) 26.Rd4 Rd4 27.Ne6 Rc8 28.Kb1 Rg4 (29.g3 Kf7–+; better is 28...Rd2!? 29.Re1–+) 0–1. Kuperski,Marek – Roczniak,Jan, corr 2. AMM Poland, 1993.

7.Qa4 c6 8.d4 Nf6 9.e4 =.

7.Qa4 c6 8.Qd4 Nf6 9.Nc4 Bc7 10.Qd8 Kd8 11.d4 Be6 12.e4 Re8 (12...Nbd7 13.e5 Nd5 14.Ne4+=) 13.e5 Nd5 14.Ne4 Nb4 15.Kd2 Na2 (15...b6!?+=) 16.Nc5 Nb4 (16...b5 17.Ne6 fe6 18.Ra2 bc4 19.Bc4+/–) 17.Nd6 (17...Bc8 18.Ne8 Ke8 19.Bc4+–) 1–0. Alissa – Klaus Behrmann, ChessWorld.net, 2003.

7.Qa4 c6 8.Ne4 Be7 =.

7.Ne4 Be5 8.Be5 Nf6 (8...f6!? 9.Bg3 Nc6+=) 9.Nf6+– gf6 10.Bc3 (10…Nc6 11.Qa4+/–) 1–0. anizan dolivia – Klaus Behrmann, ChessWorld.net, 2003.

6.Nc3 Ne7??

7.Qb3+– 0–0 8.Qb4 Nbc6 9.Nc6 Nc6 10.Qf4 Qe7 (10...Be6 11.Nb5 Rc8 12.Qg3+–) 11.Nd5 Qc5 (11...Qd6 12.Qg3 Qg3 13.hg3 Bg4+–) 12.Qg5 Ne5 (12...Qd4 13.Bd4 Nd4 14.Nf6 Kh8+–) 13.Qe5 f6 14.Nf6! Rf6 (14...Rf6 15.Qc5 Discovered attack; 14...gf6 15.Qc5 Discovered attack) 15.Qc5 Rf7 16.e4 (16.e3 Be6 17.Qe5 Rf6 18.Qc7 Rf7+–) 16...Be6 17.d4 (better is 17.Qe5 Rf6+–) 17...b6 18.Qc6 (18.Qc6 Raf8 19.Qe6+–) 1–0. Huelle,Gunter (1795) – Mueller,Marius, Leipzig VfB op, 2008.

7.Qb3 0–0 8.Qb4 Nec6 9.Nc6 Nc6 10.Qc5 Be6 11.e3 Qh4 (11...Ne7 12.d4+–) 12.d4 Ne7 (12...Rfd8 13.Bb5 Rd6 14.d5+–) 13.g3 (13.Qc7 Nd5 14.Qg3 Qd8+–) 13...Qf6 14.Bg2 c6 (14...b6 15.Qc7 Rfc8+–) 15.Ne4 Qf5 16.Qe7 Rfe8 (16...Qb5 17.Bc3+–) 17.Qc5 (17.Qb7 Bd5 18.Nd6 Qe6 19.Ne8 Re8 20.Bd5 Qd5+–) 17...Bd5 (17...Qg4 18.Nd6 Re7 19.Nc8+–) 18.Nd6 Qd3 (18...Qh5 19.Bd5 Qd5 20.Qd5 cd5 21.Ne8 Re8 22.Rc1+–) 19.Bd5 cd5 20.Ne8 (20.Rd1 Re3 21.fe3 Qe3 22.Kf1 Qf3 23.Kg1 Qd1 24.Kg2 Qe2 25.Kh3 Qh5 26.Kg2 Qe2 27.Kh3 Qh5 28.Kg2 Qe2=) 20...Re8 21.Qd5 Rc8 (21...Qa6 22.Rd1+–) 22.Qb7 Qf5 23.0–0 1–0. michaelbuss – willow27, ChessWorld.net, 2005.

7.Qb3 Bc3 8.dc3?! 0–0 +=.

7.Qb3 Bc3 8.Qc3?! f6 9.Nd3 Nd5 =.

7.Qb3 Bc3 8.Bc3?! 0–0 +=.

7.Qb3 Bc3 8.Qf7 1–0. pierred – islanderfan, slowchess.com, 2006.

6.Nc3 Nf6

7.Qa4 c6 8.Qb4 Na6 (8...a5 9.Qf4 Be6 10.d4+–) 9.Qa3 Be6 (9...Qb6 10.Nc4 Qb4 11.Nd6 Ke7 12.Nc8 Rhc8 13.e4+–) 10.e3 (10.Nc6 bc6 11.Qa6 Qb6+–) 10...c5 (10...Nb8 11.d4+–) 11.Ba6 (11.Bb5 Bd7 12.Ba6 ba6 13.Qc5 Qb6+–) 11...ba6 12.Qc5 Rc8 (12...Rb8 13.Rb1+–) 13.Qa3 Qc7 14.d4 Bc4 (14...Rb8 15.0–0+–) 15.Rc1 (15.Qa4 Kf8+–) 15...Qb7 16.f3 Nd7 (16...Be6+–) 17.Ne4 Qd5 18.Nd6 Kd8 1–0. DEFFM – GuestCCGK, freechess.org, 2018.

7.Qa4 Nc6 8.Nc6 bc6 9.Qb4 a5 10.Qc5 Qd6 11.Qg5+–.

7.Qa4 Nc6 8.Nc6 bc6 9.Qb4 Bd7 10.Ba3 Rb8 (10...Nd5 11.Qa5 Ne7 12.Qc5+–) 11.Qc5 Ng4 (11...Nd5 12.e3 Qe7 13.Qa7+–) 12.h3 Nf6 13.Qe5 (13.e4 Be6+–) 13...Be6 14.e3 Ng8 (14...Rg8+–) 15.Qg7 (15.Qg7 Nf6 16.Qh8 Kd7 17.Qg7+–) 1–0. DEFFM – AMINAAA, freechess.org, 2019.

7.Qa4 Nc6 8.Nc6 bc6 9.Qb4 Be6 10.Ba3 Rb8 11.Qa4 Nd7 12.e3 (12.Qa7?! Ra8 13.Qd4 Ra3 14.Qg7 Ke7+–) 12...c5 (12...Rb7 13.d4+–) 13.Bc5 (13.Qa7?! Ra8 14.Qb7 Ra3+–) 13...Rb2 (13...c6 14.Bd6 Rb7 15.Rc1+–) 14.Bb5 (14.Qc6 Qg5 15.Ne4 Qd8+–) 14...Qg5 15.Ba3 Qg2 (15...Rb5 16.Nb5 Qg2 17.Nc7 Kd8 18.Ne6 fe6+–) 16.Bc6 Qh1 17.Bh1 c5 (17...Rb8+–) 18.Bb2 0–0 19.Qa7 (19.Ba3 Rc8 20.Qa7 c4+–) 19...Ne5 20.Ba3 Nd3 21.Kf1 (21.Ke2 Bc4+–) 21...Bc4 22.Kg1 (22.Bd5 Bd5 23.Nd5 Kh8+–) 22...h6 23.Bc5 Rc8 24.Bd4 Rc6 25.Qa8 Kh7 26.Qc6 (26.Qc6 Be6 27.Be4 f5 28.Qe6 Nf4 29.Bf5 Ng6 30.Bg6 Kh8 31.Qe8) 1–0. DEFFM – shatirhassan, freechess.org, 2018.

7.Qa4 Bd7 8.Qb4 (8.Qb4 Nc6 9.Qc5+–) 1–0. DEFFM – cresox, freechess.org, 2018.

7.Qa4 Nbd7 8.Qb4?! Ne5 9.Nb5 Nc6+–.

7.Qa4 Nbd7 8.Nd7 Bd7 9.Qb4 a5 10.Qc5 (10.Qb7?! Rb8 11.Qa6 Rb2 12.Qa5 0–0+–) 10...b6 11.Qe5 Be6 12.Qb5 Bd7 13.Qe5 Be6 14.Ne4 Ne4 15.Qe4 0–0 (15...Kf8 16.Qe5 Rg8 17.Ba3 Ke8 18.e3+–) 16.e3 (better 16.Qe5!? Qf6 17.Qf6 gf6 18.Bf6 Bd5+–) 16...Bd5 17.Qg4 f6 18.Bc4 Kh8 19.d3 Bc4 (19...b5 20.Bd5 Qd5 21.d4+–) 20.Qc4 Qd6 21.0–0 c6 (21...b5 22.Qc2+– (22.Qb5?! Rfb8 23.Qf5 Rb2+–)) 22.a4 Rfd8 23.d4 Rab8 24.Rac1 c5 (24...Rdc8 25.e4+–) 25.dc5 bc5 (25...Qc5 26.Qc5 bc5 27.Bc3+–) 26.Ba3 Qe5 27.Qc5 Qe4 (27...Kg8 28.Qe5 fe5 29.Rc5+–) 28.Rc4 (28.Qa5 Ra8 29.Rfd1 Rd1 (29...Ra5?? 30.Rd8 Qe8 31.Re8) 30.Rd1 h6+– (30...Ra5 31.Rd8 Qe8 32.Re8)) 28...Qd3 29.Rc3 Qd1 (29...Qd5 30.Qd5 Rd5 31.Rfc1+–) 30.Qa5 Rd5 (30...Qd7 31.Rc7 Qg4 32.Rb7+–) 31.Qc7 (31.Qb5 Rdb5 32.Rd1 Ra5+–) 31…Rbd8 0–1. GuestSHSP – HeadlessHessian, freechess.org, 2017.

7.Qa4 Nfd7 8.Nd7 Nc6 9.Ne5 Qd6 (9...Rb8 10.Nc6 bc6 11.Qc6 Qd7 12.Qe4 Be7+–) 10.Nc6 bc6 11.Ne4 Bd2 12.Nd2 0–0 13.e3 Rd8 14.Bd4 c5 (14...Bd7 15.Qc2 Qg6 16.Bd3 Qg2 17.0–0–0+–) 15.Ne4 Qd7 (15...Bd7 16.Qa3 Qg6 17.Nc5+–) 16.Bb5 Qg4 17.Nc5 Qg2 (17...Qg6+–) 18.Bc6 Qg4 19.Ba8 Bf5 20.Qa7 h6 21.Bd5! Rd5 22.Qa8 Kh7 23.Qd5 f6 24.h3 Qh5 25.Rg1 c6 26.Rg7! Kg7 27.Ne6 Kh7 (27...Be6 28.Qh5 c5 29.Rb1 Bc8 30.Qc5 Bd7 31.Qe7 Kg6 32.Qf6 Kh5 33.Rb5 Bb5 34.Qf5 Kh4 35.Bf6) 28.Qd7 Kg6 (28...Qf7 29.Qf7 Kh8 30.Bf6) 29.Qg7 1–0. Buettner,Fritz (2445) – Tortoza,Carlos, CiF, 2008.

5.c3 Bc5?

6.Qb3 Qe7 7.cd4 Bd6 8.Nc3 +/–.

6.Qb3 Qf6 7.Qb5 Nc6 8.cd4 Bb6+/–.

6.Qb3 Qf6 7.cd4 Bb6 8.e3 Ne7 9.d5 (better is 9.Bb5 c6 10.Bc4+/–) 9...0–0+– 10.Nd7! Qg6 (10...Bd7 11.Bf6) 11.Nf8 Qg5 (11...Kf8 12.d3+–) 12.Nh7 (12.f4 Qh6 13.Nh7 Qh7+–) 12...Kh7 13.h4 (better is 13.d6 Nd5 14.Nc3+–) 13...Qf5 (13...Qd5 14.Qd5 Nd5+–) 14.Bd4 (better is 14.Bd3+–) 14...Ba5?? (better is 14...Bd4 15.ed4 Nd5+–) 15.Bd3 1–0. Poschmann,Hans – Pigg,Charles, CalChess State–ch, 1994.

6.Qb3 Qf6 7.cd4 Bd6 8.Nc3 Ne7+–.

6.Qb3 Qf6 7.cd4 Bd6 8.e3 Ne7 9.Bb5 (9.Nc3 0–0+–) 9...c6 (9...Nbc6!? 10.Nc3 Be6+–) 10.Bc4 0–0 11.Nf7?? (better 11.Nc3 Be5 12.de5+–) 11...Rf7= 12.Bf7 Qf7 13.Ba3 Ba3 14.Qf7 (14.Na3 b5 15.Qf7 Kf7=) 14...Kf7 15.Na3 Na6 (15...Be6 16.Ke2=) 16.Nc4 Nb4 (16...Kf6!?=) 17.Rb1+– a5 (17...Na2 18.Nd6 Kf6 19.Ke2+– (19.Nb7 Rb8–/+)) 18.a3 Bf5? (better 18...Nbd5 19.Nd6 Kf8 20.Nc8 Nc8 21.Rb7 Nd6+–) 19.Nd6+– Kg6 (19...Kf6 20.Nf5 Nc2 21.Kd1 Na3 22.Ra1+–) 20.Nf5 Nd3 (20...Kf5 21.ab4 ab4+–) 21.Ke2 (21.Ke2 Nf4 22.ef4 Nf5 23.d5 Re8 24.Kd1+–) 1–0. DEFFM – GuestMHQT, freechess.org, 2019.

6.Qb3+/– Nh6?? 7.Qb5+– Nd7 8.Nd7 Bd6 (8...Be7 9.Nf6 Kf8 10.Ne4+–) 9.Nf6 (9.Ne5 Ke7 10.cd4 Re8+–) 9...Kf8 10.Ne4 Ng4 (10...dc3 11.Nbc3 a6 12.Qd3+–) 11.Nd6 dc3 12.Nc8 cb2 13.Qb2 Qc8 14.e3 a6 15.Be2 Nf6 16.Nc3 c6 17.d4 b5 18.0–0 h5 19.Qb4 Kg8 20.Bf3 Qc7 21.Rfc1 Ng4 (21...Rh6 22.a4 Ng4 23.g3+–) 22.Bg4 (better is 22.h3 Qh2 23.Kf1 Nf6+–) 22...hg4 23.g3 Re8 (23...Qd7 24.Qc5+–) 24.Nd5 Qb7 25.Nf4 g5 (25...Qd7 26.Qc5 Rh6 27.Nd3+–) 26.Nd3 Kg7 (26...f5 27.Qb3 Kf8 28.Ne5+–) 27.Ne5 (27.Qc5 Qe7+–) 27...c5 (27...Rh2 A) worse is 28.Kh2 c5 29.Kg1 cb4–/+; B) 28.Rc6?! Reh8 29.Ng4 Rh1 30.Kg2 Qc6 (30...Ra1 31.d5 Ra2 32.Qc3 Kg8 33.Qe5+–) 31.d5 Qd5 32.e4 Qe6 33.Qd4 f6 34.Rh1 Rh1=; C) 28.Qc5 Rh5 29.Ng4+–) 28.Rc5 Rh2 Do you see the mate threat?. Black gets deadly initiative 29.Rc6 (29.Kh2 Decoy to h2 29...Rh8 A beautiful mate combination) 29...Reh8= The mate threat is Rh1 30.Kf1 (30.Ng4 Rh1 31.Kg2 Qc6 (31...Ra1 32.d5 Ra2 33.Qc3 Kg8 34.Rc8 Qc8 35.Qc8 Kg7 36.Qc3 Kg8 37.d6+–) 32.d5 Qd5 33.e4 Qe6 34.Qd4 f6 35.Rh1 Rh1 36.Kh1 Qg4=) 30...Rh1 31.Ke2 Ra1 32.Qb2 (better is 32.Qd6 Ra2 33.Kd3+=) 32...Rhh1–/+ 33.d5 Rhe1 34.Kd3 Threatening mate... how? 34...Rad1 35.Ke4 Qe7 36.Kf5?? (36.Qc3 Rc1! 37.Qb3 Rc6 38.dc6–+) 36...Rd5 37.e4 (37.Kg4 Re5 38.Qd4–+) 37...Qd7 0–1. Trkn – Noreaster, itsyourturn.com, 2001.

6.Qb3 Nh6? 7.Qb5 Nd7 8.Nd7 Bd7 9.Qc5 +–. Gross – Jakob, (Gross).

6.Qb3 Nh6 7.Qb5 Nd7 8.Nd7 Bd6 9.Nf6 Kf8 10.Ne4 Ng4 11.Nd6 dc3 12.Nc8 cb2 13.Qb2 Qc8 14.e3 a6 15.Be2 Nf6 16.Nc3 c6 17.d4 b5 18.0–0 h5 19.Qb4 Kg8 20.Bf3 Qc7 21.Rfc1 Ng4 22.Bg4 hg4 23.g3 Re8 24.Nd5 Qb7 25.Nf4 g5 26.Nd3 Kg7 27.Ne5?? c5! 28.Rc5 Rh2 29.Rc6 Reh8 30.Kf1 Rh1 31.Ke2 Ra1 32.Qb2 Rhh1 33.d5 Rhe1 34.Kd3 Rad1 35.Ke4 Qe7 36.Kf5 Rd5 37.e4 Qd7 0–1. Trkn – Noreaster, itsyourturn.com, 2001.

6.d3 dc3 7.Bc3 Nf6 8.e3 =.

6.d3 Qd6 7.Nc4 (7.Qa4 Nd7 8.cd4 Bb4 9.Nd2 Ngf6+=) 7...Qd5 8.Nbd2 b5 9.e4 Qg5 (better is 9...de3 10.Ne3 Be3 11.fe3 a6+/–) 10.g3?? (better is 10.cd4 Bb4 11.d5+/–) 10...bc4 11.Nc4 (11.cd4 Qf6 12.Qa4 Nd7 13.Qc4 Rb8 14.dc5 Rb2–/+) 11...Ne7 (11...Nc6 12.Qa4 Bd7 13.Bh3–+) 12.Be2 (12.cd4 Bb4 13.Nd2 Bg4–/+) 12...dc3 (12...Nec6!? 13.f4 Qe7 14.Nd2–+) 13.Bc3 Nbc6 (13...0–0 14.d4 Bb6 15.Rc1–+) 14.d4–/+ Bb4 (better is 14...Bb6–/+) 15.Qc2?? (better is 15.Bb4 Nb4 16.Qa4 Nbc6 17.Ne5+=) 15...Nd4–+ 16.Qc1 Qa5 (better is 16...Qg6 17.Bd3 Nd5 18.Bb4 Nb4–+) 17.Na5+– Ba3 (17...Ne2 18.Ke2 (18.Bb4?! Nc1 19.Rc1 Bd7+/–) 18...Ba5 19.Ba5+–) 18.Qd2 (better is 18.Qd1 Ne2 19.Qa4 c6 20.Ke2 Bc5+–) 18...c5 (18...Ne2 19.Qe2 0–0 20.Qd2+–) 19.Nc4 (better is 19.Bd4 cd4 20.Nc4 Bb7 21.Na3 Be4+–) 19...Nb5 (19...Ne2 20.Qe2 Bb4 21.Nd6 Kf8 22.Bb4 cb4+–) 20.Ne3 (better is 20.Na3!? Nc3 21.Qc3 0–0+–) 20...Nd4 (20...Nc3 21.Qc3 Bb4 22.Bb5 Bd7 23.Bd7 Kd8 24.Qb4 cb4+–) 21.Bd4 Bb4 (21...cd4 22.Qd4 0–0 23.Nc2+–) 22.Bc3 Bc3 23.Qc3 Bb7 24.Qg7 Ng6 25.Bh5 (25.Bb5 Ke7 26.Nf5 Ke6 27.Bc4 Bd5 28.Bd5 Kd7 29.Qf7 Ne7 30.Qe6 Kd8 31.Qd6 Ke8 32.Qe7) 25...0–0–0 26.Bg4 (26.Qf7 Ne5 27.Qe6 Nd7+–) 26...Kb8 27.Qf7 (27.Rb1 Rhe8+–) 27...Rhf8 28.Qh7 Ne5 29.Rb1 Nd3 30.Ke2 (better is 30.Kf1 Nb4 31.a3 Rh8+–) 30...Nb4?? (better is 30...Rf2 31.Kd1 Nb2 32.Ke1 Nd3 33.Kd1 Nb2 34.Kc1 Nd3 35.Kd1=) 31.Rbd1 (better is 31.a3 Ba6 32.Ke1 Bd3+–) 31...Ba6 32.Ke1 Nd3 33.Ke2 (better is 33.Rd3 Bd3 34.Qh5 Ka8+–) 33...Nb2 (33...Rf2) 34.Ke1 (better is 34.Nc4 Bc4 35.Ke3 Nd1 36.Rd1 Rd1 37.Bd1+–) 34...Nd3 35.Kf1 (better is 35.Rd3 Bd3 36.Qh5 Ka8+–) 35...Nf2 36.Kg1 (36.Kg1 Nd1 37.Bd1+–) 1–0. esso78 – Odin(Aesir), ChessWorld.net, 2004.

6.d3 Be6 7.g3 (7.cd4!? Bb4 8.Nd2+=) 7...Ne7 (7...Bd5 8.Rg1 f6 9.Nc4+=) 8.Bg2= Nbc6 (8...Bd5 9.Nf3 Nbc6 10.0–0+=) 9.Qa4 (9.Nc6 Nc6 10.Bc6 bc6=) 9...Bd5+= 10.0–0? (10.Bd5 Qd5 11.Nf3 Nf5=) 10...Bg2–/+ 11.Kg2 0–0 (better is 11...b5!? 12.Nc6 Qd5 (worse is 12...ba4 13.Nd8 Rd8 14.Rc1+/–) 13.e4 de3 (13...ba4 14.ed5 Nc6 15.dc6+–; 13...Qc6?! 14.Qb3+=) 14.Qe4 Qe4 (14...Qc6?! 15.Qc6 Nc6 16.d4=) 15.de4 Nc6 16.fe3 Rb8–/+) 12.Nc6 (12.cd4 Nd4 13.Nc3 Re8=) 12...Qd5+= 13.f3 Nc6 14.Nd2 (14.cd4 Bd4 15.Nc3 Qe5+=) 14...Rfe8 15.Ne4 h6 (15...f5 16.Nc5 Re2 (16...Qc5?! 17.Qb3 Kh8 18.Rae1=) 17.Rf2 Rf2 18.Kf2 Qc5 19.Qb3 Kh8 20.cd4 Nd4 21.Qb7 Re8–/+) 16.Nc5? (better is 16.c4 Qh5 17.Qb5=) 16...Re2–+ 17.Rf2 Rf2 18.Kf2 Qc5 19.cd4 Qd5 (19...Qh5 20.Kg2–/+) 20.Qc4 Rd8 (20...Qh5 21.Kg2–/+) 21.Re1 (21.Qd5 Rd5 22.Rb1 Rb5–/+) 21...Nd4 (better is 21...Qh5 22.Kg2 Qg5+=) 22.Qc3? (better is 22.Qd5 Rd5 23.Re8 Kh7 24.Re7–/+) 22...c5 (22...Qf3 23.Kg1 c5 24.a3–+) 23.Re3 (23.f4 Qa2 24.Re5 b6–+) 23...b6 (23...Qa2 24.Re5 b6 25.Kg2–+) 24.Qe1? (better is 24.Qc4 Qh5 25.Kg2–+) 24...Nc2?? (better is 24...Qa2!? 25.Qc3–+) 25.Re8?? (25.Qc3 Nd4 26.Qe1 Qa2 27.Qc1–+) 25...Kh7 (25...Re8 26.Qe8 Kh7 27.Qe4 Qe4 28.fe4–+) 26.Rd8–/+ Qd8 27.Qe4 Kg8 28.Qg4 Nd4 29.Qe4 (29.a3 Ne6 30.Qe4 a6–+) 29...Qd7 (29...f5 30.Qe3–+) 30.Qa8 (30.Kg2 Ne6–+) 30...Kh7 31.Qe4 g6 (31...f5 32.Qf4–+) 32.g4 Qe6 (32...a6 33.Qe5–/+) 33.Qe6 Ne6 34.Be5 a5 (34...g5 35.Ke3–/+) 35.f4 f5 (35...f6 36.Bd6–/+) 36.gf5 gf5 37.Ke2 (37.a4 Kg6–/+) 37...Kg6 (37...b5 38.Ke3–/+) 38.Ke3 (38.a4!?–/+) 38...b5 39.Bd6 b4 40.Be5 Kh5 41.d4 (41.Kf3–+) 41...cd4 42.Bd4 (42.Kd3–+) 42...Nd4 43.Kd4 Kg4 44.Ke5 (44.Kc4 Kf4 45.Kb5–+) 44...a4 45.h3 Kh3 46.Kf5 Kh4 (better is 46...b3 47.ab3 ab3 48.Kg6–+) 47.Kg6 h5 48.f5 b3 49.ab3 ab3 50.f6 b2 51.f7 b1Q 52.Kg7 Qb7 53.Kg8 Qf7! 54.Kf7 Kg4 55.Kf6 h4 56.Ke5 (56.Kf7 h3–+) 56...h3 57.Ke4 h2 58.Ke3 h1Q 59.Kf2 (59.Kd4–+) 59...Qe4 60.Kf1 (60.Kg1 Qe2 61.Kh1 Kf3 62.Kg1 Qg2) 60...Kg3 0–1. gtate (1655) – michaelmicro (1865), net–chess.com, 2001. (=1.Nf3 d5 2.b4 d4 3.Bb2 e5 4.Ne5 Bb4 5.c3 Bc5)

6.Nd3 Bb6= 7.cd4 Bd4 8.Bd4 Qd4 9.Nc3 Nf6 10.e3 Qb6 11.Rb1 Qe6? (11...Qd6 12.Qa4 c6 13.Ne4 Ne4 14.Qe4 Qe7 15.Qe7 Ke7 16.Ne5=) 12.Nf4 (12.Nc5!? Qe7 13.Nb7+/–) 12...Qe7 13.Bb5 Bd7? (13...c6 14.Qc2 0–0= (14...cb5? 15.Ncd5 Qd8 16.Nc7 Ke7 17.Na8+–)) 14.Bd7+– Nbd7 15.Rb7 Ne5? (better is 15...Nc5 16.Rb1 0–0+/–) 16.d4+– Qa3?! (16...Ng6 17.Qa4 Kf8 18.Ng6 hg6 19.Ra7 Ra7 20.Qa7+–) 17.Rc7 (better is 17.Rb3 Qa5 18.de5 Qe5 19.Qc2+–) 17...Qc3 (17...Ned7+–) 18.Rc3 Ne4 (18...Ned7 19.0–0+–) 19.Qa4 Ke7 20.Rc7 Kf6 21.Qa6 Kg5 (21...Kf5 22.Rf7! Nf6 23.Qe6 Kg5 24.Qe5 Kh6 25.g4 Ng4 26.Qg7) 22.h4 Kf5 (22...Kg4 23.f3 Nf3 24.gf3 Kf3 25.Qe2 Kg3 26.Qg2) 23.Rf7! Nf7 (23...Nf7 24.Qe6 Mate attack) 24.Qe6 1–0. nimzomorph – MARYMARY, ChessWorld.net, 2011.

5.Nd3 Ba5

6.c3 dc3 7.Nc3 Nf6 8.e3 0–0 9.Be2 Bf5 10.Nc5 Bc3 11.Bc3 b6 12.Bf3 c6 13.Nb3 Ne4 14.0–0 Nd7 (14...Re8 15.Nd4 Bg6 16.Be4 Be4 17.d3=) 15.Bb2 Rc8 16.Rc1 (16.Nd4!? Qg5 17.h4+=) 16...c5= 17.d3 Ng5 18.e4 Be6 19.Bg4 Nf6 20.Be6 Ne6 21.Qe2 Rc7 22.Nd2 (22.Qf3!?=) 22...Rd7+= 23.Rcd1 (23.Be5!?+=) 23...Nf4–/+ 24.Qf3 N6h5 (24...Nd3!? 25.Bc3 Re8–/+) 25.Nc4 Rd3 26.Rd3 (26.Ne3!? f5 27.ef5=) 26...Qd3–/+ 27.Ne3 Qe2 28.Qe2 Ne2 29.Kh1 Rd8 30.Ba1 (30.Nd5!?–/+) 30...Nhf4–+ 31.Re1? (31.g3 Nd3–+) 31...Nd4 (better is 31...Rd2!? 32.a3–+) 32.Bd4 (32.Rd1 b5–+) 32...Rd4 33.f3 Nd3 34.Rf1 Nb4 35.a3 Nc6 36.h3 Rd3 37.Nc2 Rc3 38.Rf2 Rd3 39.Re2?? f6 40.Re3 Rd1 41.Kh2 Rd2 42.Rc3 Ne5 43.Ne3? Nf3 44.Kg3 Nd4 45.Kh2 Ne6 46.Nd5 Nd4 47.Nf4?? Kf7–+ 48.Nd3 Ke6 49.Ne1 Ke5 50.Re3 Kf4 (50...Kf4 51.Rg3 g6–+ (worse is 51...Ke4 52.Rg7 Ke3 53.Rg3 Ke2 54.Nf3–+)) 0–1. Valpa – Saemi, playchess.de, 2002.

6.e3 de3?? 7.Bg7+– ef2 8.Nf2 f6 9.Bh8 Qd4 10.c3 Qf4 11.Qb3 Ne7 12.Bc4 Qe5 13.Be2 Bf5 14.0–0 b6 15.Re1 Qc5 16.d4 Qc6 17.Bb5 Nd7 18.Bc6 0–0–0 19.Bd7 Rd7 20.Bf6 Nd5 21.Re8 Kb7 22.Nd2 Nf6 23.Rf8 Rd6 24.Nc4 Be6 25.Na5 Ka6 26.Qa3 ba5 27.Rf6 Rb6 28.Re6! Re6 29.Qc5 a4 30.Qc4 Ka5 31.Qe6 c5 32.dc5 Kb5 33.Qd7 Kc5 34.Qh7 Kc4 35.Qa7 Kc3 36.Qa4 Kb2 37.a3 Ka1 38.Nd3 Ka2 39.Qc2 Ka3 40.Qb1 (40.Qb1 Ka4 41.Qb4; 40.Qc3 Ka4 41.Qb4) 1–0. elsh1403 – spaski2, kurnik, 2011.

6.g3 Nc6 7.Bg2 A) 7...Nf6 8.Na3 (8.0–0 0–0 9.Na3 Bb6 10.e4 Bg4 11.Qe1 Qe7 12.Nc4 Nd7 13.Ba3; 8.c4 0–0 9.Qa4 Qe8 10.Bc6 Qc6 11.Qc6 bc6 12.Bd4 Re8 13.f3) 8...0–0 9.Nc4 Bb6 10.Ba3 Re8 11.f4 Be6 12.Nce5 Ne5 13.Ne5; B) 7...Nge7 8.Na3 (8.0–0 0–0 9.Na3 Bb6 10.e3 Re8 11.Re1 de3 12.de3 Be6 13.Nb5; 8.e4 0–0 9.0–0 b6 10.a4 Be6 11.Na3 Qd7 12.Nf4 a6 13.Ne6; 8.e3 0–0 9.0–0 Re8 10.Na3 Bb6 11.Re1 de3 12.de3 Be6 13.Nb5) 8...0–0 9.0–0 Bb6 10.e3 Re8 11.e4 Be6 12.Nf4 Qd7 13.Qh5.

6.g3 Qd5 7.f3 Nc6 8.c4 (8.Nf4 Qb5 9.Nd3 Nf6 10.Na3 Qa6 11.Rb1 Bb6 12.Nf4 Qa4 13.c3; 8.Na3 Nf6 9.Nf4 Qc5 10.Nd3 Qf5 11.Nc4 0–0 12.Bg2 Bb6 13.0–0) 8...Qd8 9.Bg2 Nge7 10.Na3 Nf5 11.0–0 0–0 12.f4 Re8 13.Rc1.

6.g3 Qd5 7.f3 Nf6+= 8.Nf4 (8.c4 Qe6 9.Bd4 Nc6 10.Nf4 Qe7 11.Bc3 0–0 12.e3 Be6 13.Be2) 8...Qd6 (8...Qc5 9.Nd3 Qb6 10.Ba3 Nd5 11.Kf2 Na6 12.Kg2 Bf5 13.Ne5) 9.Na3 Nc6 (9...b5 10.Nb5 Qb6 11.a4+= (11.c4 Nc6 12.Qa4 a6 13.Nd4) 11...Nc6 12.Rb1 0–0 13.Ba3; 9...Qc5 10.Nd3 Qd5 11.Nf4 Qc5 12.Nd3 Qd5 13.Nf4) 10.Nc4= Qb4 11.Na5 Qa5 (11...Qb2 12.Rb1 Qa2 13.Ra1) 12.c3 dc3 (12...Qb6 13.Qb3) 13.Bc3 Qf5 (13...Qg5 14.e4=) 14.e4 (14.Qb1 Qg5+=) 14...Qg5 15.Bf6 (15.d4 0–0+=) 15...Qf6= 16.Nd5 Qd8 17.Bb5 Bd7 18.0–0 (18.d4 0–0=) 18...Ne5 (18...a6 19.Bc6 Bc6 20.Ne3=) 19.Bd7 Qd7 (worse is 19...Kd7 20.f4 Ng6 21.Qb3+/–) 20.d4 Nc4 (20...Ng6 21.Rc1 c6 22.Ne3+=) 21.Qd3 (21.Qc1 b5 22.Qg5 f6 23.Qh5 Kd8+=) 21...b5 22.Nc3 (22.Ne3 Ne3 23.Qe3 0–0+=) 22...Rd8 (22...0–0 23.Rab1 a6 24.Na4=) 23.Rab1 (23.a4 c6+= (worse is 23...Qd4 24.Qd4 Rd4 25.ab5+/–)) 23...a6= (worse is 23...Qd4 24.Qd4 Rd4 25.Nb5+/– (worse is 25.Rb5 Kd7+=)) 24.a4 Qd4 25.Qd4 Rd4 26.ab5 ab5 (better is 26...Nd2!?=) 27.Nb5+/– (worse is 27.Rb5 Kd7+=) 27...Rd7 (27...Rd3 28.Nc7 Kd7 29.Nd5+/–) 28.Rbc1 (28.Nc7 Ke7 29.Nd5 Ke6+/–) 28...Nd2 29.Rf2 Nb3 (29...0–0 30.Rc7 (30.Nc7?! Rc8=) 30...Rfd8 31.Rd7 Rd7 32.e5+/–) 30.Rc7 Rc7 31.Nc7 Kd7 32.Nd5 Ke6 33.Rb2 Nd4 34.Kf2 Rc8 35.f4 (35.Rb7 Rc2 36.Ke3 Nc6+–) 35...Rc5 (35...f5!? 36.Rb6 Rc6 37.Rc6 Nc6+/–) 36.Rb6 Kd7 37.Rb7 Ke8 38.Re7 (38.g4 Ra5+–) 38...Kf8 39.Rc7 Rc7 40.Nc7 Ke7 41.Nd5 Kd6 42.Ke3 Nc2 43.Kd2 Nd4 44.Kd3 Nf3 45.h4 Ne1 46.Kd2 Nf3 47.Ke3 Ne1 (47...Nh2 48.Kd3+–) 48.Nb4+– Kc5 49.Nd3 Nd3 50.Kd3 h5 51.e5 (51.Kc3!? Kc6+–) 51...Kd5+/– 52.Ke3 f6 53.ef6 gf6 54.g4 hg4 55.h5 Ke6 56.h6 Kf7 57.f5 ½–½. hal1958 – saemi, playchess.de, 2002.

6.g3 Qd5 7.Rg1 Nf6= (7...Nc6 8.Bg2 Qh5 9.Nf4 Qc5 10.c3 Bb6 11.cd4 Nd4 12.Nd3 Qe7 13.e3; 7...Ne7 8.Bg2 Qd8 9.c3 Nbc6 10.cd4 0–0 11.Na3 Nd4 12.Nc4 Nec6 13.e3) 8.Bg2 Qf5 9.Bd4 Nc6 10.Bc6 bc6 11.Nc3 0–0 12.g4 Qg5 13.Rb1.

6.g3 Nf6 7.Bg2 A) 7...0–0 8.0–0 (8.Na3 Nc6 9.0–0 Bf5 10.Nc4 Bb6 11.e3 Re8 12.a4 Be4 13.Be4) 8...Nc6 9.Na3 Bf5 10.Nc5 Rb8 11.Nc4 Bb4 12.Nd3 Be7 13.Re1; B) 7...Nc6 8.0–0 (8.Na3 Bb6 9.0–0 0–0 10.e4 Re8 11.Re1 Bg4 12.Qb1 Nd7 13.Nc4; 8.c4 Ne7 9.Qa4 c6 10.c5 0–0 11.Na3 Bf5 12.Nc4 b5 13.cb6) 8...0–0 9.Na3 Bf5 10.Nc4 Bb6 11.e3 Re8 12.a4 Be4 13.Be4.

5.e3 de3

6.fe3 Qe7 7.Bc4 f6?? 8.Nf7 Qe3 9.Kf1?? (better is 9.Qe2 Qe2 10.Ke2+–) 9...Qf4–/+ 10.Kg1 Qc4 11.Nh8 Qc5 12.d4 Qd5 13.Nc3 Bc3 14.Bc3 Bf5 15.Qe2 Kf8?? (15...Ne7 16.Bb2 Nbc6=) 16.Re1 (better is 16.Bb4 c5 17.Bc5 Qc5 18.dc5+–) 16...Nc6+= 17.h3 Nge7 (17...Qa2?! 18.Qb5 Nge7 19.Qb7=) 18.g4 Bd7 19.Qe4 Kg8 20.Qd5 Nd5 21.Bd2 Nd4 22.c4 Nf3 (22...Kh8?! 23.cd5 Nf3 24.Kf2 Nd2 25.Re7–/+) 23.Kf2 Ne1 (23...Nd2?! 24.cd5 Kh8 25.Re7–/+; 23...Kh8?! 24.Kf3 Nb6 25.Kf2 Nc4 26.Bf4+=) 24.cd5 (24.Re1 Nb6–+ (24...Kh8?! 25.cd5 Re8 26.Re8 Be8 27.Kf3–/+)) 24...Nd3 (24...Kh8?! 25.Re1 Re8 26.Bf4 Re1 27.Ke1–/+) 25.Ke3 Ne5 (25...Kh8?! 26.Kd3 Bb5 27.Kc3–+) 26.Bc3 Re8 27.Be5 (27.Rb1 Ng4 28.Kd2 Ne3 29.Rb7 Nd5–+) 27...Re5 28.Kd4 Kh8 29.Rc1 c6 30.dc6 Bc6 31.Rc3 h5 32.gh5 Rh5 33.a3 Rd5 34.Kc4 Kh7 35.Re3 f5 36.a4 (36.Rg3 f4 37.Rg4 Rf5–+) 36...f4 37.Ra3 g5 38.a5 a6 0–1. bratek55 (1655) – nexhi2010 (1605), kurnik, 2011.

6.fe3 Qe7 7.Bc4 Nh6 8.Qh5 Can f7 get defended? 8...0–0 9.Nc3 Bf5 (better is 9...Be6!?+=) 10.Nd5+/– Qd6 11.0–0 Bg6? (better is 11...b5!? 12.Qg5 bc4 13.Nc4 Qg6 14.Qg6 Bg6 15.Nb4 Rd8+/–) 12.Qg5+– (12.Ng6?! hg6 13.Qg5 Kh7+– (13...Bd2?? 14.Rad1+–)) 12...b5 13.Bb3 (13.Nb4?! bc4 14.Bc3 a5 15.Ng6 Qg6 16.Qg6 hg6+–) 13...a5 14.Nf6! (14.Nb4?! ab4 15.h4 c5 (15...Qd2?? 16.Rad1 Qd1 17.Rd1+–) 16.Ng6 Qg6 17.Qc5 Na6 18.Qb5 Rfc8+–) 14...Kh8 (14...Qf6 15.Bf7) 15.Ng6 hg6 (15...fg6 16.Ne4 Qe7 17.Rf8 Qf8 18.Qh6 Bd2+–) 16.Nh5! f6 (16...gh5 A pinning theme 17.Qg7 The nicest combinations are those leading to mate) 17.Rf6!! Rf6 (17...gf6 Theme: Deflection from h6 18.Qh6 A beautiful mate combination) 18.Bf6 (18.Nf6 Bd2 19.Qg6 Be3 20.Kh1 gf6 21.Bf6 Qf6 22.Qf6 Kh7 23.Qe7 Kg6 24.Qe4 Kg7 25.Qa8 a4 26.Qb8 ab3 27.Qc7 Kg6 28.Qc6 Kg7 29.ab3 Bd4 30.Qd7 Kg6 31.Qd4 Ng4 32.Qg4 Kf6 33.Ra6 Ke5 34.Re6 Kd5 35.Qf5 Kd4 36.Qe5) 18...Kh7 19.Bg7 (19.Ng7?! Nd7 20.Bb2 Bd2+/–) 19...gh5 (19...Nf5 20.Nf6 Kg7 21.Ne8 Kh7 22.Nd6 Bd6+–) 20.Bh6 (better is 20.Bf6 Qf6 21.Qf6+–) 20...Qg6 21.Qd8 (21.c3 Qg5 22.Bg5 Bd6+–) 21...Kh6 (21...a4 22.Qc7 Kh6 23.Qf4 Qg5 24.Qb4 ab3 25.Qb3 Nc6+/–) 22.Rf1 Threatening mate: Qh8 22...Ra6 23.Bf7 Qg7 (23...Qh7 24.c3 Ba3+–) 24.Rf5 (24.Qb8?! Rf6 25.Qe8 Bd6 26.Rf6 Qf6+–) 24...Rg6 (24...Qf8 25.Qg5 Kh7 26.Be6 Re6 27.Rf8 Bf8 28.Qf5 Rg6 29.Qf8+–) 25.Bg6 1–0. Pietrzak,Janusz – Ciesielski,Janusz, corr Poland, 1975.

6.fe3 Nf6 7.Bc4+= 0–0 8.0–0 Bd6 (8...c6 9.Qf3 Be6 10.d3=) 9.Qf3 c6?? (9...Be5 10.Be5 Nbd7 11.Bd4+=) 10.a4 (better is 10.Nf7 Rf7 11.Bf6 gf6 12.Qf6 (12.Bf7?! Kf7 13.Nc3 Kg7=) 12...Qf6 13.Rf6+–) 10...Qe7? (10...Be6 11.Na3=) 11.Nd3?? (better is 11.Nf7 Nd5 12.Bd5 cd5 13.Qd5 Bh2 14.Kh2+–) 11...Ng4= 12.g3 Will f7 fall? 12...Ne5 (better is 12...Nh2!? 13.Kh2 Qh4 14.Kg1 Qc4 15.Bg7 Kg7 16.Qf6 Kg8 17.Qg5 Kh8 18.Qf6 Kg8 19.Qg5 Kh8 20.Qf6 Kg8=) 13.Ne5 Be5 14.Be5 Qe5 15.Nc3 (15.Bf7!? Kh8 16.Nc3+/–) 15...Be6 16.d4 Qd6 17.Ne4 Qe7 18.Be6 Qe6 19.Qf5 Qf5 20.Rf5 Nd7 (20...b6 21.Nd6+=) 21.Nd6 g6 22.Rf4 b5 (22...b6!?+/–) 23.ab5+– cb5 24.Nb5 a5 25.c4 Nb6 (25...f5 26.c5+–) 26.Nd6 f5 27.Rf2 Rf6 (27...Nc8 28.Nc8 Rfc8 29.Ra4+–) 28.c5 Nd7 (28...Re6+–) 29.Rfa2 Re6 30.Kf2 (30.Ra5 Ra5 31.Ra5 Nf6+–) 30...Nb6 (30...Nf6 31.h3+–) 31.Ra5 (31.cb6?! Rd6 32.Rb2 Rb8+–) 31...Ra5 32.Ra5 Nd5 33.Nc4 Kf7 (33...Kf8 34.Kf3+–) 34.Ne5 (34.c6 Nc7+–) 34...Ke7 (34...Kg7 35.c6 Nc7 36.Ra7+–) 35.Ra7 Kf6 (35...Kf8 36.Rh7 Nf6 37.Rc7+–) 36.Rf7 Kg5 37.Rh7 (37.Rh7 Ra6 38.h4 Kf6 39.Rf7 Ke6 40.Rg7+–) 1–0. Kleinke,Uwe – Barz,M, Schwerin, 1978.

6.fe3 Nf6 7.Bc4 Be6 8.Be6 fe6 9.0–0 0–0 10.Nc3 (10.d3 Bc5 11.Qe1 Nbd7 12.Nd7 Qd7 13.Bf6 Rf6 14.Rf6 gf6+=) 10...Nbd7 11.Nd3 Ba5 (11...Bd6 12.Qf3 Ne5 13.Ne5 (13.Qb7 Nd3 14.Rf6 Qf6–+) 13...Be5 14.d4+= (< 14.Qb7 Qd2 15.Qb3 Qe3 16.Kh1 Rfe8–/+)) 12.Ne2 (12.Rb1 c5=) 12...Bb6 (12...Ne4 13.Nd4 Bd2 14.Ne6 Be3 15.Kh1=+) 13.Kh1 (13.a4 Ne4 14.Rf8 Qf8=) 13...Qe7 14.a4 (14.Qe1 Ne4 15.Rf4 Nec5=) 14...a6 (14...Ne4 15.Rf4 Ndc5 16.Ba3 Rf4 17.Nef4=) 15.a5= Ba7 16.Ng3 e5 17.Nf5 Qe6 18.Qe2 (18.Qf3 e4 19.Qh3 Ne8=) 18...e4 19.Nb4 (19.Ne1 Bc5=) 19...c5 20.Na2 Nd5?? (better is 20...Bb8=) 21.Qg4+– (21.Ng7?! Qd6 22.Nf5 Qg6+/–) 21...N7f6 (21...Qg6 22.Qe4 Rf5 23.Rf5 Nc7+–) 22.Qg7 1–0. Fredek (2065) – Zamkinoz, Freundschaftspartie, 5m + 0s, 2006.

6.fe3 Nf6 7.Nd3 Bd6= 8.Be2 0–0 9.0–0 Ne4 10.Nf4 Qh4 11.Bd3 f5 (11...Nc5 12.Bc4=) 12.Rf3 (better 12.Qh5!? Qh5 13.Nh5+–) 12...Nc6 13.Rh3?? (better 13.Bc4 Kh8 14.Ng6 hg6 15.Rh3 Qh3 16.gh3+=) 13...Qg5 (better 13...Qf2 14.Kh1 Qf4 15.Bc4 Kh8 16.ef4 Nf2 17.Kg1 Nd1–+) 14.Be4 (14.Bc4 Kh8 15.Rh5 Bf4 16.Rg5 Bg5+–) 14...fe4+– 15.Rg3 Bf4 16.ef4?? (better 16.Rg5 Bg5 17.Qh5+–) 16...Qc5=+ 17.Kh1 Rf7 18.Nc3 Bf5 (worse 18...Rf4 19.Rg7 Kf8 20.Rh7+–) 19.Ne2 Rd8 20.Rb1 e3 21.d3 b6 22.a3 (better 22.Bc1=+) 22...Na5 (22...Re8!?=+) 23.Be5 (23.Qc1!?+=) 23...Nc4= 24.d4? (better 24.Bd4 Rd4 25.Nd4 Na3 26.Nf5 Rf5 27.Ra1=) 24...Qa3–+ 25.Bc7?? (25.Rg5 h6 26.Rf5 Rf5–+) 25...Rdd7 (better 25...Rc7 26.Rc1 Bg6–+) 26.Be5 Qa2 (better 26...Qa5–+) 27.c3?? (better 27.Rc1–/+) 27...Bb1 (27...Qb1 28.Qb1 Bb1 29.Kg1–+) 28.h3 (28.Ng1 b5–+) 28...Be4 29.Kh2 (29.Ng1 Qf2 30.Ne2 Rd5–+) 29...Ne5 (29...Qd2 30.Qf1 Bd3 31.Qf3 Qe2 32.Qc6–+) 30.fe5 (30.Re3 Bc2 31.Nc1 Bd1 32.Na2 Nc4–+) 30...Rf2 31.e6 (31.e6 Re7 32.Rg4 Re2 33.Qf1–+). Abdullaevich (1955) – Mr_Ferchichi (1945), lichess.org, 2020.

6.fe3 Qh4

7.g3 Qg5 8.Qf3 =.

7.g3 Qe4

8.Qf3 Bf5 9.a3 Be7 10.Bg2 Qf3 11.Bf3 +=.

8.Qf3 Nf6 9.Qe4+= Ne4 10.a3 (10.Nd3 Bf8+=) 10...Be7 11.Bg2 Nd6 12.Nc3 (12.Nd3 f6=) 12...f6 (12...c6 13.Ne4=) 13.Nd5 Bd8 14.Nd3 c6 15.N5f4 0–0 (15...Ba5 16.Bd4=) 16.Nc5 (16.Bc3 Be7=) 16...Re8 17.Bh3 (17.Bd4 Nb5 18.Nb3 Nd4 19.Nd4 Bb6=) 17...Bh3 18.Nh3 Bb6 19.Bd4 (19.Nd3 c5=) 19...Na6 (19...Nb5 20.Kf2–/+) 20.Na6 (20.Nb3 c5 21.Bb2 c4=+) 20...Bd4–/+ 21.c3 Bc3!–+ 22.Rc1 Re3 23.Kd1 Bd2 24.Kd2 Ra3 25.Nc5 Re8 26.Nf4–/+ b5 27.Ra1 Nc4 28.Kc2 a5 29.Nfe6 Kf7 30.Ra3 Na3 31.Kb3 Nc4 32.Re1 Ne5 33.Nd4 Rd8 34.Re4 Rd5 35.Nb7 a4 36.Kc3 Rd7 37.Nc5 Rd8 38.Kb4 Rd5 39.h4 h5 40.Nc6 Nc6 41.Kb5 Ne7 42.Ra4–/+ Nf5 43.Ra3 Re5 44.Rd3 Re3 (45.Re3 Ne3–+) 0–1. Gajda,Leszek – Roczniak,Jan, corr Poland, 1994.

8.Qf3 Qf3

9.Nf3 f6 10.Bc4 Nc6 11.Ng5 Nh6 (11...fg5? 12.Bg7 Bf5 13.Bh8 Bc2 14.a3+–) 12.Be6 (12.0–0 Bd6 13.Ne4 Bh3 14.Nd6 cd6=) 12...Bd6 (12...Ng4 13.Bg4 Bg4 14.h3=+) 13.Bc8= Rc8 14.0–0? (14.Ne4 Kd7=+) 14...0–0 (better is 14...fg5 15.Bg7 Rg8 16.Bh6 Rg6 17.Bg5 Rg5–/+) 15.Ne4= Be7 16.a3 f5 (16...Rcd8 17.h3=) 17.Nf2 Nf7 (17...Rcd8 18.Nd3=) 18.d4 Rcd8 19.c4 Bg5 20.Nd1 Nd6 21.Nd2= Rde8 22.Rf3 b6 23.Kf2 h5 24.a4 Ne4 25.Ne4 fe4 26.Rf8 Kf8 27.Bc3 Bf6 28.Ke2 Ke7 29.Rb1 Kd7 30.d5 Ne5 31.Be5 Be5 32.Nf2 Bd6 33.Rg1 a5 34.h3 g5= 35.g4 h4 36.Rf1 c6 37.dc6 Kc6 38.Rd1 Bg3 39.Rd5 Bf2 40.Kf2 Rf8 41.Kg2 Rf3 42.Rg5 Re3 43.Rh5 Rg3–/+ 44.Kh2 Ra3 45.Rh4 Ra4–/+ 46.g5 Rc4 47.g6. Gajda,Leszek – Roczniak,Jan, corr Poland, 1994.

9.Nf3 f6 10.Bc4 Nd7 11.Ba3 Ba5 12.0–0 =.

9.Nf3 f6 10.Nd4 a6 11.Bc4 Nh6 12.Nc3 c6 13.a3 Ba5 14.Ne4 b5 15.Bb3 Bc7 16.Be6 (16.0–0 Be5+=) 16...Ke7 17.Bc8 (17.Bb3 Nf5=) 17...Rc8= 18.a4 b4 19.a5 (19.c3 a5=) 19...Be5 20.c3 (20.Rf1 c5 21.Nf5 Nf5 22.Be5 Ke6 23.Bf6 gf6 24.Rf5 Kf5 25.Nd6 Ke6 26.Nc8 Nc6+=) 20...c5=+ 21.Nf3 Nf7 (21...Nd7 22.d4 f5 23.Ne5 fe4 24.Nd7 Kd7 25.dc5=) 22.0–0 (22.d4 f5 23.Ne5 fe4 24.Nf7 Kf7 25.Rf1 Kg6 26.cb4 cb4+=) 22...Nd7 (22...Nd6 23.Nd6 Kd6 24.d4 cd4 25.cd4 Bg3 26.hg3+–) 23.Rac1 (23.d4 bc3 24.Bc3 Bd6=+) 23...Nd6 (23...b3 24.Ne5 Nfe5 25.d4–+) 24.Ne5 (24.Nd6 Kd6 25.d4+/–) 24...Ne5–/+ Black fights for the Initiative 25.Nd6 Kd6 26.cb4 cb4 27.Be5 fe5 28.Rc8 Rc8 29.Rb1 Rb8 30.Kf2 Kc5 31.Ke2 Kb5 (32.h3 Ka5–+) 0–1. Szczepaniak,Alicja – Roczniak,Jan, corr 1. AMM Poland, 1991.

9.Nf3 f6 10.Nd4 Ne7 11.Bc4 =.

9.Nf3 f6 10.Bg2 c6 11.0–0 Bf5 12.d3 Nd7 13.Nd4 Ne7?? (better is 13...Bg6+=) 14.Nf5+– (14.Rf5?! Nf5 15.Nf5 g6+–) 14...Nf5 15.Rf5 0–0 16.Nc3 Rfe8 17.Ne4 Re6 (17...Be7 18.g4+–) 18.Bh3 Re7 19.Rf3 (19.a3!? Re4 20.de4 Bc5+–) 19...Rf8 (19...Nc5 20.Bf5+–) 20.Bd7 (20.Rb1 Nc5 21.Bf6 gf6 22.Rb4 Ne4 23.Re4 Re4 24.de4 Kg7+–) 20...Rd7 21.Raf1 a5 22.a3 Be7 23.Nf2 (23.g4 b5+–) 23...b5 24.Ng4 b4 25.ab4 ab4 26.e4 Bc5 (26...Ra8 27.Kg2+–) 27.Kg2 Bd4 28.Bd4 Rd4 29.Ne3 Ra8 30.R1f2 Rd7 31.Nc4 Ra2 (31...Re7 32.h4+–) 32.Rf5 (32.e5 Rf7+–) 32...Rda7 (32...b3 33.cb3 Rf2 34.Kf2 Rd3 35.Na5+–) 33.Rc5 R7a6 34.Kf3 (34.e5 h6+–) 34...g5 (34...Kf7 35.e5+–) 35.Ke3 Kg7 36.Rcf5 b3 37.cb3 Rf2 38.Rf2 c5 39.Rb2 Kg6 40.b4 cb4 41.Rb4 h5 42.h3 (better is 42.Rb2 Rc6+–) 42...g4 (42...Ra1 43.Rb6 Rg1 44.Kf2+–) 43.hg4 hg4 44.Kf4 Ra1 45.Kg4 Rd1 46.Rb6 Kg7 47.Rd6 Kf7 48.Rd5 Rf1 49.Rf5 Rf5 (49...Rd1 50.Rf3 Rh1 51.Nb6+–) 50.Kf5 (50.Kf5 Kg7 51.d4+–) 1–0. mikebaldini (1705) – tonyy (1660), gameknot.com, 2014.

9.Nf3 f6 10.Bg2 Nc6 =.

5.Nf3 c5

6.a3 Ba5 7.e3 Bg4 8.Be2 Nf6 9.0–0 (9.Nd4 Be2 10.Ne2 0–0+–) 9...0–0 (9...Qb6 10.Bc1 de3 11.fe3=) 10.ed4 (10.Nd4 Be2 11.Ne2 Re8+–) 10...cd4 (better 10...Bf3!? 11.Bf3 cd4=) 11.Nd4+– Be2 12.Qe2 Nc6 (12...Nbd7 13.Nf5+–) 13.Nc6 bc6 14.Qf3 Bd2?? (14...Qd5!? 15.Qf4 Nh5+–) 15.Nd2 (better 15.Bf6 Qf6 16.Qf6 gf6 17.Nd2+–) 15...Qd2 16.Bf6 gf6 17.Qf6 (17.Rfd1 Qc2 18.Rac1 Qg6+–) 17...Qc2+– 18.Rfc1 Qg6 19.Qc6 Rac8 (19...Qc6 20.Rc6 Rfd8 21.Rac1+–) 20.Qa4 (20.Qc8!? Rc8 21.Rc8 Kg7+–) 20...Rc1 21.Rc1 Qf5 (21...a6 22.h3 Qe6 23.Rc6 Qe1 24.Kh2 Qf2 25.Ra6+–) 22.h3 (22.Qa7 Re8+–) 22...Rc8? (better 22...a5!?+–) 23.Rc8 Qc8 24.Qa7 Qc1 25.Kh2 Qf4 26.Kg1 Qc1 27.Kh2 Qf4 28.g3 Qf3 (28...Qe5+–) 29.Qd4 (29.a4 Kf8+–) 29...h6? (better 29...Qa3 30.g4 Qf3+–) 30.Qg4+– Qg4 31.hg4 Kf8 32.Kh3 Ke7 33.Kh4 1–0. AhmedSultanov (1640) – ASshakhmaty (1660), lichess.org, 2019.

6.c3 dc3 7.Nc3 Bf5? 8.e4 Bg6 9.Bc4 (9.Na4!? Kf8 10.a3+/–) 9...Nf6 10.d3 (10.Nd5 Ne4 11.Nb4 cb4 12.Bg7 Rg8+=) 10...Nc6 (10...a6 11.0–0 b5 12.Bb3+=) 11.0–0 Bh5 (11...0–0 12.Nd5 Nd5 13.Bd5+=) 12.h3 (12.Nd5 Nd5 13.ed5 Bf3 14.Qf3 Nd4 15.Qe3 Kf8+/–) 12...Nd4 (better is 12...0–0!?=) 13.g4 Ng4 (better is 13...Nf3!? 14.Qf3 Bg6+/–) 14.Nd4+– (14.hg4?! Bg4 15.Bf7 Kf8 16.Nd4 cd4 17.Qg4 dc3 18.Bc3 Bc3=) 14...Qg5? (14...Qd4 15.Qb3 Qf6 16.hg4 Bg4 17.Nb5+/–) 15.Qa4 (15.Nf3 Qg6 16.Nh4 Qg5 17.Bb5 Kf8+–) 15...Kd8 (15...Kf8 16.Nf3 Qf6+–) 16.f4?? (16.Nf3 Qf6 17.Nd5 Qf3=) 16...Qg6 (better is 16...Qh4 17.Nf5 Qh3+/–) 17.f5?? (17.Bf7 Qf7 18.hg4 Bg4+–) 17...Qg5?? (better is 17...Qd6 18.Nc6 bc6 19.hg4 Qg3 20.Kh1 Qh3 21.Kg1 Qg3 22.Kh1 Qh3 23.Kg1 Qg3=) 18.Bc1?? (better is 18.Nf3 Qe3 19.Kg2+–) 18...Ne3 19.Kf2 Qf4 (19...Qf4 20.Kg1 Qf1 21.Kh2 Qg2; 19...Bc3?! 20.Nc6 bc6 21.Be3 Qh4 22.Kg2–/+) 0–1. zabazaba (1695) – dragqueen1 (1625), gameknot.com, 2013.

6.e3 Nc6 7.Bb5 Nge7 8.0–0 (8.a3 Ba5 9.ed4 cd4 10.Bd4 0–0+=) 8...0–0= 9.a3 Ba5 10.d3?? (10.ed4 cd4 11.Re1 Qb6=) 10...Bg4?? (better is 10...Qb6 11.a4 a6–+) 11.Nbd2 Bd2 12.Qd2 Bf3 13.gf3 Ne5 14.Qe2 Qb6 15.ed4? (15.Rfb1 Qg6 16.Kh1–/+) 15...Nf3?? (better is 15...Qb5 16.c4 Nf3 17.Kh1 Nd4 18.cb5 Ne2–+) 16.Qf3+= Qb5 17.Rfb1 cd4 18.Bd4 Qg5 (18...Qd7 19.Qb7 Qg4 20.Kf1 Qd4 21.Qe7=) 19.Kh1+= Nf5 20.Bb2 f6 (better is 20...Nh4!? 21.Qb7 Rab8+=) 21.Rg1+/– Qh5 1–0. mr5reasons1 (1730) – nwaj (1700), gameknot.com, 2013.

6.e3 Nc6 7.Bc4 Nf6 8.a3 Ba5 9.ed4 cd4 10.Qe2 Kf8 11.0–0 Bg4 12.h3 Bh5 13.Re1 (13.Qd3 Rc8 14.Re1 Bb6=) 13...Qd7 (13...Qd6 14.Qd3 Bc7 15.g3 (15.Bd4?? Bf3 16.Bc5 Qc5–+; 15.Nd4?? Qh2 16.Kf1 Qh1) 15...Bf3 16.Qf3=+) 14.Qd1 (14.Qd3 Bb6=) 14...Bc7 15.Bb5 Qd6 (15...Kg8 16.c4=+) 16.Bc6 (16.g4 Bg6=) 16...bc6 17.g4 Ng4 18.hg4 (18.Bd4?? Nh2 19.Be5 Nf3 20.Qf3 Bf3 21.Bd6 Bd6–+) 18...Bg4 19.Qe2 (19.Bd4 Qg6 20.Kg2 Bf5 21.Kf1 Bc2–+) 19...f6 (19...Rb8 20.Bc1 Qf6 21.Ne5 Be2 22.Nd7 Ke7 23.Nf6 Kf6 24.Re2=) 20.Qe4 (better is 20.d3 Rb8 21.Nbd2+/–) 20...f5? (better is 20...Bh5 21.Qf5 g6+=) 21.Qd4+– Qg6 22.Re6! Qe6 23.Qg7 Ke8 24.Qh8 (24.Qc7? Bf3 25.Qe5 Rg8 26.Kf1 Kd7 27.Qe6 Ke6–+) 24...Kd7 25.Ne5 (25.Qg7 Qe7 26.Ne5 Be5 27.Qe7 Ke7 28.Be5 Rg8+–) 25...Be5 26.Qa8?? (better is 26.Qe5 Bd1 27.Qg7 Qe7 28.Qe7 Ke7 29.d4+–) 26...Bc7–+ 27.Nc3 (27.Qa7?? Qe1 28.Kg2 Bf3 29.Kf3 Qe4) 27...Bf3 (28.Ne4 fe4 29.Qe8 Qe8 30.Be5 Qe5 31.Re1 Qh2 32.Kf1 Qh1#; 27...Qe5 28.Qc8 Kc8 29.f4 Qd4 30.Kg2 Qd2 31.Ne2 Qe2 32.Kg3 Qf3 33.Kh2 Qf2 34.Kh1 Bf3) 0–1. Klaus Behrmann – nbh999, ChessWorld.net, 2003.

6.e3 de3 7.fe3 f6 8.c4 Bf5 9.Be2 Nc6 10.0–0 Bg6 11.Nc3 Nge7 12.a3 Ba5 13.Qb3 Bc3 14.Bc3 (worse is 14.dc3 Qd7+=) 14...b6 15.d4 0–0 16.d5 Na5 17.Qa2 (17.Ba5 ba5 18.Nd2 Rb8+/–) 17...Nf5+= 18.e4 Ne3 19.Rfc1 Be4 20.Ba5 ba5 21.Qd2 Bf3 22.Bf3 Re8? (22...Nf5 23.d6 Qd6 24.Qf2+=) 23.Rc3 (better is 23.d6 Rb8 24.Rc3+–) 23...Nf5+/– 24.Qf4 (better is 24.d6!? Qd6 25.Qd6 Nd6 26.Ba8 Ra8 27.Rd1+/–) 24...Nd6 25.Rcc1 Rb8 26.Qg3 (26.Re1 Re1 27.Re1 f5=) 26...Re5 27.h3 Qc7 28.Bg4 Rbe8 29.Be6 Kf8 (29...Kh8 30.Rab1+=) 30.Rab1 Nb7?? (30...Ne4 31.Qg4=) 31.Qh4 (better is 31.Rb7 Qb7 32.Qe5 fe5 33.Rf1 Ke7 34.Rf7 Kd6 35.Rb7+–) 31...h6 32.Rb5 Nd8 33.Bg4 Nf7 34.Rcb1 Nd6–/+ 35.R5b3 Nc4 36.Rb7 Re1! 37.Re1 Re1 38.Qe1 Qb7 39.Be6 Ne5 40.Qe4 c4 41.Qh7 Nf7 42.d6? Qb6–+ 43.Kh1 Qd6 44.Bc4 Qa3 45.Qc2 Qa1 46.Kh2 Qe5 47.Kh1 Ng5 48.Bb3 Ne4 49.Qc4?? Ng3 50.Kg1 Qe1 51.Kh2 Nf1 52.Kh1 Nd2 (52...Nd2 53.Kh2 Nc4 54.Bc4 a4–+) 0–1. mr5reasons1 (1660) – beans1993 (1635), gameknot.com, 2012.

5.Nf3 Nc6

6.a3 Bc5 7.d3 Nf6 8.c3 0–0 9.cd4 Nd4 10.Nbd2 Bg4 (10...Nf3 11.Nf3 Re8 12.e3=+) 11.e3 Nf3 12.Nf3 Re8 13.d4 (13.Be2!?=) 13...Bb6=+ 14.Be2 Qd7 (14...Ba5!? 15.Kf1 Nd5=+) 15.0–0= Rad8 (15...Qe6 16.h3 Bf3 17.Bf3=) 16.Qb3 (16.Ne5 Be2 17.Nd7 Bd1 18.Nf6 gf6 19.Rad1 f5+=) 16...Ne4 17.Rad1 c6 (17...Qd6 18.d5=) 18.Rfe1?? (better 18.Ne5 Be2 19.Nd7 Rd7 20.Rfe1 Bd1 21.Rd1+–) 18...Bc7 19.a4 a5 (19...Ba5!? 20.Ne5 Be1 21.Nd7 Bf2 22.Kf1 Be2 23.Ke2 Rd7=+) 20.Ba3 Bh5 21.Rc1 Bf3 22.gf3?? (better 22.Bf3 Nd2 23.Qd1 Nf3 24.Qf3=) 22...Ng5 (better 22...Qh3 23.f4 Bf4 24.ef4 Qb3–+) 23.f4 Ne6?? (better 23...Qh3!? 24.f3 Nf3 25.Bf3 Qf3–+) 24.Bg4?? (24.Qb7 Bd6 25.Qd7 Rd7 26.Bd6 Rd6+–) 24...f5?? (better 24...Nd4 25.Bd7 Nb3 26.Be8 Nc1 (worse 26...Re8 27.Rcd1 b5 28.Rd7+–) 27.Bf7 Kf7 28.Rc1 Rd2=+) 25.Bh3 g6 26.Bg2 Qg7? (better 26...Rb8!?+–) 27.Qb7+– Qh6 (27...Bd6 28.Qg7 Kg7 29.Bd6 Rd6 30.Rc6 Rc6 31.Bc6+–) 28.Qc6 Rb8 (28...Bb8 29.Qb5+–) 29.Qd7 (better 29.Bd5 Kh8 30.Be6 Qg7+–) 29...Rbc8 (29...Rbd8 30.Qb5 Bb8+–) 30.Bd6 (better 30.Bd5 Kh8 31.Be6+–) 30...Bd6?? (better 30...Rcd8 31.Qe8! Re8 32.Bc7 Nc7 33.Rc7 Qf8+–) 31.Rc8 (31.Rc8 Rc8 32.Qe6 Kg7 33.Qd7 Kg8 34.Bd5 Kh8 35.Qc8 Qf8 36.Qa6+–) 1–0. alessandrocarvalhaes (1860) – juvelink88 (1795), lichess.org, 2020.

6.a3 Bc5 7.e3 Nf6 8.Bb5 de3 9.fe3 Bd7 10.0–0 0–0 11.Nc3 a6 12.Ba4 b5 13.Bb3 Bg4 14.h3 Bh5 15.d4 Bd6 16.Qe1 Qe7 (16...Re8 17.Rd1+=) 17.e4 (17.Nd5 Nd5 18.Bd5+=) 17...Bg6?? (better is 17...Bf3 18.e5 Rae8 19.ef6 Qf6–+) 18.e5+– Nd4 19.ed6 Nf3 20.Rf3 Qd6 21.Rd1 Qc5 22.Kh1 Rae8 23.Qf1 Bh5?? (23...Qe7 24.Rf6! Qf6 25.Qf6 gf6 26.Nd5+–) 24.g4 (better is 24.Rf6!? c6+–) 24...Ng4? (24...Bg6 25.Kh2+/–) 25.hg4?? (25.Rd5!? Qc6 26.Rh5 Re1 27.Qe1 Qf3 28.Kg1 Nf2+–) 25...Bg4 26.Rf4?? Qh5+= 27.Kg1 Bd1 28.Nd1 Qg5 29.Kh2 Qh5? 30.Kg3+/– Qg5? 31.Rg4+– Qe5 32.Be5 Re5 33.Qf4 Re7 34.Qd4 g6+– 35.Re4 (35.Re4 c5 36.Qd5 Re4 37.Qe4+–) 1–0. Fournier,Frederic (1650) – agrurion, Active, 2006.

6.c3 dc3= 7.Nc3 Nf6 8.e3 (8.a3 Bd6=) 8...0–0 9.Be2 (9.Bb5 Bd7=) 9...Bf5 (9...Re8 10.0–0=+) 10.0–0= Re8 11.Bb5 (11.d3 Qd7=) 11...Bd3=+ 12.Bd3 Qd3 13.Qb3 a5 (13...Rab8 14.Rfc1=+) 14.a3 (14.Na4 Qb3 15.ab3 b5=) 14...a4=+ 15.Qd1 Bc3 16.Bc3 Ne4 17.Ne1 (17.Qb1 Nc5=) 17...Qd5=+ 18.Qc1 (18.Rb1 Nc3 19.dc3 Qd1 20.Rd1 Ne5=) 18...Qc4= 19.f3? (better is 19.Rb1 Rab8 20.Nf3=) 19...Nc3–+ 20.dc3 (20.Qc3 Qc3 21.dc3 Re3–+) 20...Na5 21.Qc2 (21.Rb1 Nb3 22.Qb2 Re3–+) 21...Re3 22.Rd1 Rc3 23.Qd2 Qc5 24.Kh1 Qa3 25.Nc2 Nc4 26.Na3 Nd2 27.Rd2 Ra3 28.Rfd1 Kf8 29.Rd7 b5 30.Rc7 Re3 31.Rb7 a3 32.Rb5 a2 33.Ra1 Rae8 34.h3 Re1 (35.Re1 Re1 36.Kh2 a1Q 37.Rb8 Ke7 38.Rb7 Kd6–+) 0–1. 73DADDELDU37 – Antaeus, mySchach.de, 2005.

6.e3 Nge7 7.Nd4 Nd4 8.Bd4 +=.

6.e3+= Bg4 7.ed4 (7.Be2 d3 8.Bg7 de2 9.Qe2 Qd6+–) 7...Nf6 (7...Nd4 8.Bd4 Bf3 9.Qf3 Qd4 10.c3 Qe5 11.Kd1+/–) 8.c3 (8.Bb5 0–0 9.Bc6 bc6=) 8...Be7 (8...Qe7 9.Qe2 Bf3 10.gf3=) 9.Na3 (9.Be2 0–0=) 9...0–0 10.Be2 Re8 11.Nc4 (11.0–0 Nd5=) 11...Bd6 (11...Bf3 12.Bf3 Ba3 13.Kf1 Bb2 14.Nb2=) 12.0–0 Qd7 (12...Nd5 13.Nd6 Qd6 14.Bc4=) 13.Ne3 Bh5 14.Re1 Ne7 (14...Rad8 15.d5 Ne7 16.c4+=) 15.Ne5+/– Be5 16.de5 Be2 17.Qe2 Ne4 (17...Nfd5 18.d4+/–) 18.d4 Ng5 (18...Rad8 19.c4+/–) 19.c4 Nc6 (19...Ng6 20.Qh5 h6 21.Rad1+/–) 20.Red1 (20.f4 Ne4+–) 20...a5 (20...Ne7 21.Qh5 h6 22.d5+–) 21.Qg4 (better is 21.h4!? Ne4 22.Qf3+–) 21...Qg4+/– 22.Ng4 h6 23.f4 Nh7 24.d5 Na7 25.c5 h5 26.Nf2 Rad8 27.d6 cd6 28.cd6 f6 29.Rac1 Nc6 30.Re1 Kf7 31.Nd3 Nf8 32.Nc5 Rb8 33.Re2 g5 34.Rce1 Ne6 35.Ne6 Re6 36.f5 Ree8? 37.e6 Kg7 38.e7 Kf7 39.Re6 (39...Ne7 40.Rf6 Kg8 41.de7 Re7 42.Re7 Rc8 43.Rg6 Kf8 44.Rb7 Rc1 45.Bc1 g4 46.Bh6 Ke8 47.Rg8) 1–0. Eisenhauer,Erik – Michel,Thomas, SBRhH–ch H GER, 2001.

6.e3 de3??

7.fe3?? Nf6= 8.Bb5 0–0 9.0–0 a6 (9...Bd7 10.Bc6 Bc6 11.Nh4=) 10.Ba4 (10.Bc6 bc6 11.Ne5 Qd5+=) 10...Bg4 (10...Na5 11.Qe1=) 11.h3 (11.Bc6 bc6 12.Qc1 Bd6=) 11...Bh5 (11...Bd7 12.Nh4 Ne4 13.Rf4=) 12.d3 (better is 12.Bc6 bc6 13.Qc1=) 12...Ne5?? (12...b5 13.Bb3+=) 13.g4?? (better is 13.Be5 Bd6 14.Bb2+–) 13...Nfg4 (13...Bg4!? 14.hg4 Neg4=) 14.hg4+= Bg4?? (better is 14...Ng4 15.Qe2 Qe7+=) 15.Be5+– b5 (15...Qe7 16.Bf4+–) 16.Bb3 Re8 (16...Bd6 17.Bb2+–) 17.Bf4 (17.Bf7 Kf7 18.Nh2 Kg8 19.Ng4 Re5 20.Ne5 Qg5 21.Ng4 h5+–) 17...Qf6 18.Nbd2 (better is 18.c3 Bc5 19.d4+– (19.Bc7 Re3 20.Kg2 Qh6 21.Bf7 Kh8=)) 18...Bd2 19.Qd2 Bf3 20.Bc7 (20.Bg3 c5+–) 20...Qg6 21.Kf2 Qg2 (21...Qc6 22.Bf4 Bg2 23.Rfb1+–) 22.Ke1 Qg5 (22...Qg4 23.Bf7! Kf7+–) 23.Rf3 Qg1 24.Rf1 (better is 24.Ke2 Qa1 25.Bf7 Kh8 26.Rf1+–) 24...Re3= 25.Qe2 (better is 25.Qe3! Qe3 26.Kd1=) 25...Re2–/+ 26.Ke2 Qg2 (better is 26...Re8!? 27.Kd2 Qe3 28.Kc3 Qc5 29.Kd2 Qc7 30.Bf7 Qf7 31.Rf7 Kf7–/+) 27.Ke3= Re8 28.Kd4 Qg4?? (28...Re7 29.Ba5+=) 29.Kc3?? (better is 29.Kc5!? Re6 30.Be6 fe6 31.d4+–) 29...Re7 (better is 29...b4 30.Kb2 Qd4 31.Kb1 Re7+=) 30.Bd6+= Rd7 31.Bc5 Rc7 32.d4 Qg3 (32...g6 33.Kb4 Kg7 34.Rad1+=) 33.Kb2+/– Qg2? (better is 33...h5+/–) 34.Rae1+– h6 35.Rg1 (better is 35.Bf7!? Kh7 36.Rg1 Qg1 37.Rg1 Rf7 38.a4+–) 35...Qf2 (better is 35...Qd2!?+=) 36.Ref1+– Qe2 37.Rh1 (37.Bd6 Ra7+–) 37...Kh7 (better is 37...a5 38.Bb6 Rb7+=) 38.Rfg1 (38.Bf7 b4+/–) 38...Rc5 (38...g6!?=) 39.dc5 (39.Re1 Qf2 40.dc5 Qc5 41.Bf7 a5+/–) 39...Qe5+= (39...Qe5 40.c3 b4+=) +=. TriAngel – Sideswipe, ICC, 1999.

7.Bg7 ed2 8.Nbd2 Qe7 9.Be2 Bd2 10.Qd2 Bg4 11.Bh8 Bf3 12.gf3 Rd8 13.Qe3 Qe3 (13...Rd6 14.Rg1 Nh6 15.Qe7 Ke7 16.Rb1+–) 14.fe3 Nge7 15.Bf6 (15.Rb1 b6+–) 15...Rd6 16.Be7 Ne7 17.Bd3 h6 18.Rb1 b6 19.Rg1 c6 20.Rg4 Re6 (20...f5 21.Rg7+–) 21.Kf2 (21.Ra4 Re3 22.Kf2 Re5 23.Ra7 Ra5+–) 21...Kd7 (21...Rd6 22.a3+–) 22.Rd4 (22.Ra4 Kd6+–) 22...Rd6 23.Rd6 Kd6 24.Rd1 (24.Rg1 f6+–) 24...Ke5 (24...Nd5 25.Bc4 Kc5 26.Bb3+–) 25.Rg1 (better 25.Bc4!? Kf6+–) 25...Kf6 26.Rg4 Ng6 (26...c5 27.f4 Nd5 28.e4+–) 27.Bg6 fg6 28.Rd4 Ke6 29.Rd8 h5 (29...Ke5 30.Rc8 Kd5 31.e4 Kd6 32.Rg8+–) 30.Ra8 a5 31.Rb8 b5 32.Kg3 a4 33.Kf4 (33.Kf4 Kf6 34.Rf8 Kg7 35.Rc8+–) 1–0. aravind555 – fixedgearpioneer (1620), lichess.org, 2019.

7.Bg7 ef2 8.Kf2 Bc5 9.d4 Nd4 10.Nd4?! Nf6 11.c3 Ng4 12.Kg1 Rg8 +/–.

7.Bg7 ef2 8.Kf2 Bc5 9.d4 Nd4 10.Bh8 Nf3 11.Bd4 Bd4 12.Qd4 Qd4 13.Kg3 Qa1 14.Bb5 Kf8 15.Kf3 Qf6 16.Ke3 Qe5 17.Kf2 Qb5 18.Re1 Qc5 19.Kg3 Qd6 20.Kf2 Bf5 21.Re3 Qf4 22.Rf3 Qh4 23.Kg1 Qd4 24.Kf1 Bg4 25.Nc3 Bf3 26.gf3 Qc3 27.Kg2 Qd2 28.Kg3 Qg5 29.Kf2 Rd8 30.f4 Qf4 31.Kg1 Qe3 32.Kg2 Rd2 33.Kf1 Qf2.

7.Bg7 ef2 8.Kf2 f6?? 9.Bh8 (9.c3!? Nh6 10.Bh8 Bd6+–) 9...Bc5 10.Ke1 Kf7 (10...Qe7 11.Qe2 Be6 12.Nc3+–) 11.Bc4 Be6 (11...Kg6 12.Qe2 h6 13.Bd3 f5 14.Ne5 Ne5 15.Be5+–) 12.Ng5 (better 12.Be6 Ke6 13.Qe2 Kd7 14.Qd3 Ke6 15.Qe4 Kd6 16.Kd1+–) 12...fg5 13.Qh5 Ke7 14.Qh7 Kd6 15.Be6 (15.Nc3 Bf2 16.Kf2 Qf8 17.Kg1 Bc4 18.Ne4 Ke6+–) 15...Ke6 (15...Qe7 16.Qd3 Ke6 17.Kd1+–) 16.Rf1 (16.Qe4 Kd6 17.Qg6 Ke7+–) 16...Qe7 17.Qf5 Kd6 18.Kd1 Qe6 19.Qg5 Re8 Do you see the mate threat? 20.Nc3 a6 21.a3 Kd7 (21...b6+–) 22.Qc5 Qg4 23.Kc1 Nge7 (23...Qg2 24.Qf5 Re6 25.Nd5+–) 24.Bf6 (24.Nd5 Nd5 25.Qd5 Kc8+–) 24...Rf8 (24...Qg2 25.Rf2 Qg6 26.h4+–) 25.Kb2 Qg2 (25...b6 26.Qg5 Rg8 27.Qe3+–) 26.Rae1 Rf7 27.d4 (27.Qc4 Rf6 28.Rf6 Qg7 29.Qe6 Kd8+–) 27...b6 (27...Qg6 28.Nd5 Ng8+–) 28.Qc4 Rh7 29.Qe6 Ke8 30.Qc8 Kf7 (30...Nd8 31.Be7 Qf3 32.Bd8 Kf8 33.Rf3 Kg7 34.Qg4 Kh6 35.Qg5) 31.Be7 Kg6 (31...Qf1 32.Rf1 Ke7 33.Re1 Ne5 34.Re5 Kf7 35.Qf5 Kg8 36.Qg6 Rg7 37.Re8) 32.Rg1 (32.Qf5 Kg7 33.Qf6 Kg8 34.Qf8) 32...Rh2 (32...Rf7 33.Rg2 Kh5 34.Qh3) 33.Rg2 (33.Rg2 Rg2 34.Qg8 Kf5 35.Rf1 Rf2 36.Rf2) 1–0. BeepBeepImAJeep (2565) – ensaha (2400), lichess.org, 2015.

7.Bg7+– ef2 8.Kf2 Nf6? 9.Bh8 Bg4 (9...Ng4 10.Kg1+–) 10.Qe2 Kf8 11.Qc4 Qe7 12.Bd3 (12.Be2 Ne4 13.Kf1 Rd8+–) 12...Bc5 13.Kf1 Re8 (13...Bf3 14.gf3 Kg8 15.Bf6 Qf6 16.Qc5 Qf3 17.Kg1 Qg4 18.Kf2 Qf4 19.Ke1 Re8 20.Be2 Re2 21.Ke2 Qe4 22.Qe3 Qg2 23.Kd3 Qh1 24.Qg3 Kh8+–) 14.Qf4 Ng8 (14...Qd6 15.Qf6 Qf6 16.Bf6+–) 15.Qg4 Qe6 (15...f6 16.Nc3 Qf7 17.Rb1+–) 16.Qg7 (16.Bg7 Ke7 17.Qg5 Kd6+–) 16...Ke7 17.Qg5 f6 18.Qc5 Kf7 19.Bc4 (19…Qc4 20.Qc4 Re6 21.d4+–) 1–0. marekt (2275) – aissanov (2115), ICC, 2003.

4.Ne5 Nc6

5.Nc6 bc6 6.a3 c5 7.c3 cb4 8.cb4 (8.ab4 dc3 9.Nc3 Nf6+/–) 8...Nf6 (8...Rb8 9.Qa4 Bd7 10.Qc2+/–) 9.Qc2 (9.e3 c5+/–) 9...Be7 (9...Rb8 10.e3 c5 11.bc5 Bc5 12.Qc5 Rb2 13.a4+/–) 10.e3 (10.Qc4 Be6 11.Qd4 Qb8+–) 10...de3+/– 11.de3 0–0 (11...Bd7 12.Bd4+/–) 12.Nc3 (12.Bd3 a5 13.b5 Bb7+/–) 12...Bb7 13.Rd1 Qc8 (13...Qb8 14.Nb5 Rc8 15.Qf5+/–) 14.Nb5 c5 (14...Rd8 15.Qc7 (worse is 15.Nc7 Rd1 16.Kd1 Qd8 17.Ke1 Rc8+=) 15...Rd1 16.Kd1 Qc7 17.Nc7 Rd8 18.Ke1+/–) 15.Bf6+– Bf6 (15...gf6 16.Nd6 Bd6 17.Rd6 cb4 18.Qc8 Rfc8 19.ab4+/–) 16.bc5 Rd8 17.Nd6 (17.Rc1 Bc6+–) 17...Qc7 18.Bc4 (18.Rd2 Rab8 19.Bc4 Bg2 20.Bf7 Kf8=) 18...Bg2+/– 19.Bf7 (19.Rg1 Bf3 20.Rc1 Kf8+/–) 19...Kf8 20.Rg1 Bf3 21.Rd2 (better is 21.Bd5!? Qa5 22.Kf1 Rd6 23.Bf3 (23.cd6?! Bd5 24.Rg3 Rd8=) 23...Rd1 24.Qd1+/–) 21...Rd6+= 22.Rd6 (better is 22.cd6 Qf7 23.Rg3= (worse is 23.Qh7 Rb8 24.Rg3 Qh5–/+)) 22...Kf7?? (better is 22...Qf7 23.Rg3 Qh5+=) 23.Qc4 (23.Qh7?? Qa5 24.Kf1 Qb5 25.Qd3 Rb8 (25...Qc5?! 26.Rf6 gf6 27.Qh7 Ke6 28.Qh3 Qf5 29.Rg3 Qh3 30.Rh3–+) 26.Qb5 Rb5 27.Rd7 Ke8–+) 23...Kf8 (23...Ke7 24.Re6 Kd7 25.Rf6 Qa5 26.Kf1 gf6 27.Qf7 Kc6 28.Qf6 Kb5 29.Qf3 Rb8+–) 24.Rf6! gf6 (24...gf6 25.Qg8 Mate attack) 25.Rg8 (25.Qg8 Ke7 26.Rg7) 25...Ke7 26.Rg7 1–0. combijack (1755) – pawnpusher2011, gameknot.com, 2010.

5.Nc6 bc6 6.a3 c5 7.c3 g6 8.cd4 cd4 9.e3 Bg7 10.Bc4 Qg5?? (better 10...Ne7+–) 11.Qf3 de3 (11...Nf6 12.Qa8 0–0 13.Bd4+–) 12.Bg7 (12.Bg7 ed2 13.Nd2 Qe7 14.Kf1+–) 1–0. emmasdad – raymac, ChessWorld.net, 2017.

5.Nc6 bc6 6.a3 c5 7.bc5 Bc5 8.e3 de3 (8...Rb8 9.ed4 Bd4 10.Bd4 Qd4 11.Nc3+–) 9.fe3 Ne7 (9...Qh4 10.g3 Qg5 11.Bb5 Kf8 12.Nc3+–) 10.Bd3 (10.Bg7 Rg8 11.Bf6 Qd6+–) 10...0–0 (10...Rb8 11.Bg7 Rg8 12.Be5+–) 11.0–0 (11.Bh7!? Kh7 12.Qh5 Kg8 13.Qc5 Qd6 14.Qd6 cd6+–) 11...Bd6 12.Qh5 The mate threat is Qxh7 12...g6?? (better 12...Ng6+–) 13.Qh6 f6 (13...Bh2 14.Kh1 f6 15.Rf6 Rf6 16.Bf6+–) 14.Rf6 (better 14.Bc4 Nd5 15.Bd5 Be6 16.Be6 Kh8 17.Nc3+–) 14...Rf6 15.Bf6 (better 15.Bc4 Nd5 16.Bd5 Be6 17.Be6 Kh8 18.Bf7+– (18.Bf6?! Qf6 19.Nc3 Qe6+–)) 15...Qf8 (15...Kf7 16.Be7 Qe7 17.Qh7 Ke6 18.Qg6 Kd7+–) 16.Qf8 (16.Bc4 Nd5 17.Bd5 Be6 18.Be6 Qf7 19.Qg7) 16...Kf8+– 17.Nc3 Nf5 18.Rf1 Be7 (18...Ke8 19.Nb5+–) 19.Be7 (better 19.Be5!? Ke8 20.Nb5 Bd8+–) 19...Ke7 20.Bf5 (20.Nd5!? Kd6 21.Nf6 Be6+–) 20...Bf5 21.d3 Rf8? (21...Rb8+–) 22.e4 Be6 23.Rf8 Kf8 24.Kf2 (24.Nb5 c5 25.Na7 Ba2+–) 24...c5 (24...c6 25.Na4+–) 25.Ke3 a5 (25...Ke7 26.Kf4+–) 26.d4 (26.Na4 c4+–) 26...cd4 27.Kd4 Ke7 28.Ke5 Kf7 29.Nd5 Bd5 (29...h5+–) 30.ed5 Ke7 31.c4 a4 32.c5 White prepares d6 32...Kd7 33.Kd4 (33.c6!? Kc7+–) 33...h5 34.c6 Kc7 35.Kc5 g5 36.d6 Kd8 37.c7 Kc8 38.Kd5 (38.Kc6 h4 39.d7) 38...Kd7+– 39.Kc5 (better 39.g3 h4+–) 39...g4?? (39...Kc8 40.Kc6 h4 41.d7) 40.g3+– h4 41.gh4 g3 42.hg3 Kc8 (42...Ke6 43.c8Q Ke5 44.d7 Ke4 45.d8Q Kf3 46.Qf5 Kg3 47.Qd2 Kh4 48.Qdf4) 43.h5 Kd7 44.h6 Kc8 (44...Ke6 45.c8Q Ke5 46.h7 Kf6 47.h8Q Kg6 48.Qe6 Kg5 49.Qhe5) 45.Kd5 (45.h7 Kb7 46.h8Q Ka7 47.Qb8 Ka6 48.Qb6) 45...Kd7 (45...Kb7 46.h7 Kb6 47.h8Q Kb5 48.Qb8 Ka5 49.c8N Ka6 50.Qb6) 46.h7 Kc8 47.h8Q Kd7 (47...Kb7 48.c8Q Kb6 49.Qc6 Ka5 50.Qhc3) 48.Qd8 (48.c8Q) 1–0. BeepBeepImAJeep (2555) – lel20, lichess.org, 2018.

5.Nc6 bc6 6.c3 c5 7.bc5+– Bc5 8.cd4 Bd4?? (better is 8...Rb8+/–) 9.Qa4+– Bd7 10.Qd4 Nf6 11.Qe3 (11.Qf4 Be6+–) 11...Be6 12.g3 (12.Qg5 Rg8+–) 12...0–0 13.Bf6 (13.Qg5 h6 14.Qh4 Nd5+–) 13...Qf6 14.Qc3 Qe7 15.Bg2 Bg4 (15...Rab8 16.0–0+–) 16.0–0 (16.Qc4 Be6 17.Qa6 Rae8+–) 16...Rac8 17.e3 Qd7 18.d4 Qb5 19.Nd2 Be2 20.Rfc1 Bd3 21.Nc4 Bc4 22.Qc4 Qc4 23.Rc4 f6 24.Bd5 Kh8 25.Bb7 Rb8 26.Rc7 a5 27.Rac1 Kg8 28.Bd5 Kh8 29.Be6 h6 30.Rc8 Rfc8 31.Rc8 Rc8 32.Bc8 Kg8 33.e4 Kf7 34.f4 Ke7 35.Kf2 Kd8 36.e5 fe5 37.fe5 1–0. algernon (2155) – kingsbishop (2350), net–chess.com, 2003.

5.Nc6 bc6 6.c3 Qd7 7.cd4 Bb4 8.Qa4+–.

5.Nc6 bc6 6.e3 de3 7.Qe2 (7.de3?! Bb4 8.Nd2 Nf6+=; 7.fe3?! Qh4 8.g3 Qb4+=) 7...Bb4?? (better 7...Be6 8.Qe3 Nf6+–) 8.Bg7+– (8.Qe3?! Kf8+–). DEFFM – GuestMKZR, freechess.org, 2018.

4.Ne5 Qd5

5.Nd3 +=.

5.Nf3 Bb4 6.Bd4 Nc6?? 7.Bg7+– Bf5 8.c3 Bc5 9.Bh8 f6 (9...0–0–0 10.Qb3 Qd7 11.e3+–) 10.Qb3 0–0–0 (10...Nce7 11.e3 Qb3 12.ab3+–) 11.Qd5 Rd5 12.e3 (12.d4 Bf8+–) 12...Be7 13.Bc4 Rd8 14.Bg7 Na5 15.Bg8 (better 15.Bf7 Bd3+–) 15...Rg8 16.Bh6 Nc4 (16...Bd6 17.g3+–) 17.0–0 (17.Ke2 Nb2 18.Ne1 c5+–) 17...Nb2 (17...Be4 18.Kh1+–) 18.g3 (18.d4!? Bh3 19.Ne1 Nd3 20.Nd3 Rg2 21.Kh1 Rg6+–) 18...Nd3 19.Nd4 (better 19.Ne1+–) 19...Rg6 (19...Bh3+–) 20.Nf5 Rh6 (20...Bc5 21.h3+–) 21.Ne7 (better 21.Nh6!? Kd7+–) 21...Kd8 (21...Kd7 22.Nf5 Rg6 23.Na3+–) 22.Nf5 Kd7 (22...Rg6+–) 23.Na3 (23.Na3 Rg6 24.e4+–) 1–0. GuestBBFM – GuestQTBB, freechess.org, 2017.

5.Nf3 c5 6.bc5 Bc5!? 7.c3 dc3 8.Nc3 Qd8 +/–.

5.Nf3 c5 6.bc5 Bc5 7.c3 Nc6 8.cd4 Nd4? (better is 8...Bb4+–) 9.Bd4 f6 (9...Bd4 10.Qa4 Qc6 11.Qc6 bc6 12.Nd4+–) 10.Nc3 Qd6 (10...Qh5+–) 11.Ne4 Qd5 (11...Qe7 12.Nc5 b6 13.Qa4 Kd8 14.Nd3+–) 12.Nc5 (12...b6 13.e4+–) 1–0. pcmvr (2110) – lwarren (2305), net–chess.com, 2006.

5.Nf3 c5 6.bc5 Nf6 7.Bd4+– Nc6 (7...Ne4 8.e3+–) 8.Bf6 gf6 9.d4 Bg4 10.Nc3 Qd7 11.e3 0–0–0 12.Bb5 a6 (12...Rg8 13.Qd3+–) 13.Ba4 (13.Bd3 Qc7 14.0–0 Rg8+–) 13...Qc7 14.Bc6 Qc6 15.h3 (15.Qe2 Rg8+–) 15...Bf3?! (15...Bc5 16.Ne5 Qe6 17.Qg4 Bb4 18.Qe6 fe6+–) 16.Qf3 (16.gf3?! Bc5 17.Nb1 Bb4 18.Ke2 Bd6+–) 16...Qf3 17.gf3 Rg8 18.Rb1 Bh6 (18...f5 19.Na4 f4 20.c4 fe3 21.fe3+–) 19.Ne4 Kc7 (19...Bf8 20.Nf6 Rg6 21.Nh7 Bc5 22.f4+–) 20.Nf6 Rg6 21.Ng4 (21.Ne4 Bf8+–) 21...Bg7 22.Ke2 (22.f4 Bd4 23.ed4 Rd4+–) 22...Re6 (22...h5 23.Nh2+–) 23.Kd3 (23.c3 f5 24.Nh2 Rd7+–) 23...h5 (23...Rc6 24.Kc4+–) 24.Nh2 Bf8 25.Kc3 Be7 26.Kb3 (26.Rb3 Rg6+–) 26...Rg6 (26...Bh4 27.c3+–) 27.f4 (27.Rbg1 Rdg8 28.Rg6 Rg6+–) 27...Rdg8 (27...Bh4 28.Kc4+–) 28.Nf3 1–0. alexp (2435) – yetzaline (2270), net–chess.com, 2016.

4.Ne5 Qd6

5.Nd3 Nc6 6.b5 Nb4 7.e3 de3 8.de3 Nf6 (8...Bd7 9.Bc3 Nd5 10.Be5+/–) 9.Be2 Ne4 (better is 9...Nd3!? 10.Qd3 Be7+/–) 10.0–0+– Be7 (10...Bd7+–) 11.Nb4 Qb4 12.Ba3 Qa5 (12...Qa4 13.Be7 Ke7 14.Bd3+–) 13.Be7 Ke7 14.Qd4 Nd6 15.c4 Nf5 (15...f6 16.Rd1 Rd8 17.c5+–) 16.Qc5 Nd6 17.Rd1 (17.Qe5 Kf8 18.c5 Ne8+–) 17...Kf8 18.Nd2 b6 19.Qc7 Ne8 20.Qc6 Rb8 21.Nb3 Qc3 22.Rd8 Qe5 23.Re8! Qe8 24.Qd6 Kg8 25.Qb8 g6 26.Qa7 Qe6 27.Nd4 Qf6 28.a4 Kg7 29.a5 ba5 30.c5 Rd8 31.c6 Qd6 32.Ra5 Qb4 33.Qc7 Rf8 34.Ra8 Bg4 35.Rf8 Kf8 36.Bf1 h5 37.b6 Qa5 38.Qd6 Kg7 39.b7 Qa7 40.h3 Bd1 41.b8Q (41...Qb8 42.Qb8 Ba4 43.c7 Bd7 44.Qd8 Bf5 45.Nf5 Kh7 46.c8R gf5 47.Qh8 Kg6 48.Rg8) 1–0. pereira – KingJunior, internet, 2006.

5.Nd3 Nf6 6.a3 b6 (6...Nc6 7.e3 a6 8.Be2+/–) 7.e3 c5 (7...de3 8.de3 Bb7 9.Nc3+/–) 8.ed4 cd4 9.Be2 Bb7 (9...a5 10.ba5 Ra5 11.0–0+/–) 10.0–0 Ne4 11.Re1 Be7 12.Bf3 f5 13.Nc1 0–0 14.d3 Rf6?? (better is 14...Nf2 15.Kf2 Qh2 16.Re7 Qh4 17.Kg1 Bf3 18.Rg7 Kg7 19.Qf3 Qe1 20.Qf1 Re8 21.Qe1 Re1 22.Kf2 Re7+–) 15.de4 (15.Be4?! fe4 16.de4 Re6+–) 15...fe4 16.Be4 Rh6 17.h3 (17.Bb7?! Qh2 18.Kf1 Qh1 19.Ke2 Re6 20.Kd2 Bg5 21.Kd3 Re1+–) 17...Nc6 (17...Be4 18.Re4 Bf6 19.Qe2+–) 18.b5 Bd8 (18...Nd8 19.Qd4 Qd4 20.Bd4 Be4 21.Re4+–) 19.bc6 Bc6 20.Bc6 (better is 20.Qd4 Qd4 21.Bd4 Bg5+–) 20...Bc7 (20...Qc6 21.Nb3 Rg6+–) 21.Ba8 Qh2 22.Kf1 Qh1 23.Ke2 Re6 24.Kd3 Re1 25.Qg4 Qf1 26.Ne2 Qf2 27.Bd5 Kf8 28.Qc8 Ke7 29.Qc7 Kf8 30.Qd8 1–0. Richard,Andy – Gumminger,Fred, IECC, 1999.

4.Ne5 Bd6

5.Bd4 Bb4 6.Nc6!! bc6 7.Bg7 f6 8.Bh8 Be6 (8...Nh6 9.e3 Bg4 10.Be2+–) 9.e3 (9.c3 Bd6+–) 9...Qe7 (9...Qd5 10.a3 Ba5 11.c3+–) 10.Bd3 Nh6 (10...Qf7 11.Qf3 f5 12.a3+–) 11.Qh5 Nf7 12.Qh7 Nd7 13.Ba6 (13.Bg7 Rb8+–) 13...Nf8 14.Qh4 (14.Qh5 Rb8+–) 14...Ng6 15.Qe4 Ngh8 (15...Nfe5 16.Bb7 Rb8 17.Bf6 Qf6 18.Qb4 Bc8+–) 16.Qc6 Bd7 (16...Qd7 17.Qa8 Nd8 18.a3+–) 17.Qa8 Qd8 (17...Nd8 18.Qa7 Qe4 19.Qc7 Qg2 20.Rf1+–) 18.Qe4 (18.Qa7 c6+–) 18...Be7 19.Nc3 (19.Qb7 Ng6+–) 19...Ng5 (19...Nd6 20.Qd4 Bc6 21.Qa7+–) 20.Qh4 (better 20.Qb7 c6+–) 20...Ng6 (20...Nhf7 21.Rb1+–) 21.Qh5 Kf7 (21...Bf5 22.h4 Qd6 23.Bd3 Bd3 24.cd3 Qd3 25.e4+–) 22.Bd3 (better 22.h4 Ne6 23.Qh7 Kf8 24.Qg6 Qe8 25.Qh6 Kg8+–) 22...Qg8 23.Nd5 Bd6 24.Nf4 Bf4 25.ef4 Ne6 (25...Qh7 26.Bg6 (26.fg5?! Qh5 27.Be4 Qg5=) 26...Qg6 27.Qg6 (27.fg5?! Qh5 28.f4 fg5=+) 27...Kg6 28.fg5 fg5 29.h4+–) 26.f5 Nef4 27.fg6 Ng6 (27...Kg7 28.Qf3 Qe6 29.Be4 Ng6 30.0–0+–) 28.Qd5 Be6 29.Qe6! Ke6 30.Bc4 Ke7 31.Bg8 Nf4 32.0–0–0 (32.g3 Ng6+–) 32...Ng2 33.Rde1! Kf8 (33...Ne1 34.Re1 Combination) 34.Reg1 Nf4 35.Bc4 Nh3 36.Rg8 (36.Rg6 Ke7 37.Re1 Kd6 38.Rf6 Kd7 39.Rf7 Kc6 40.Re6 Kc5 41.Rc7 Kb4 42.c3 Ka5 43.Ra7) 36...Ke7 37.Re1 Kd6 38.d4 Nf2 39.Rd8 Kc6 40.Re6 Kb7 41.Ba6 1–0. GuestSSGD – GuestMJBS, freechess.org, 2018.

5.Bd4 Bb4 6.Nc6!! bc6 7.Bg7 Nf6 8.Bh8 Be6 9.e3+–.

5.Bd4 Bb4 6.Nc6 Nc6 7.Bg7 Nf6 8.Bh8 Bf5 9.e3 Bg4 10.Be2 Be2 11.Qe2 Ne5 (11...Qd6+–) 12.Qb5 Nc6 13.c3 (worse 13.Qb7 Kd7 14.Bf6 Qf6+–) 13...Ba5 (13...Be7 14.Bf6 Bf6 15.Qb7 Ne7+–) 14.Qb7 Qe7 1–0. DEFFM – GuestNPDT, freechess.org, 2018.

5.Nf3 Nc6 6.b5 Nce7 7.Bd4 Bd7?? (better 7...Nf5 8.Bb2 Nf6+–) 8.Bg7 Nh6 (8...Ng6+–) 9.Bh8 Bb5 10.Bb2 (10.Nc3 Bc6+–) 10...Qd7 11.e3 (11.Nc3 Bc6+–) 11...0–0–0 12.Bb5 Qb5 13.Bc3 Nd5 14.Nd4 Qb6 15.0–0 (15.Qh5 Be7+–) 15...Nc3 (15...Bc5 16.Qf3+–) 16.Nc3 Qc5 (16...Be5 17.Rb1 Qg6 18.Ncb5+–) 17.Rb1 Qe5 (17...c6 18.Qf3 Bf8 19.Qh3 Kc7 20.Qg3 Kc8 21.Rb7 Kb7 22.Rb1 Qb6 23.Rb6 ab6 24.Qf4+–) 18.f4 Qg7 19.Qh5 (better 19.Qf3 b6+–) 19...Kb8 (19...Rg8 20.g3 Qg6 21.Qd5+–) 20.Nf5 (20.Nc6 Kc8 21.Nd8 Kd8 22.Rb7 a6+–) 20...Qf8 (20...Nf5 21.Qf5 b6+–) 21.Nh6 Qe7 22.Ng4 (22.Qf7 Qf8 23.Qh7 Bb4+–) 22...Bb4 23.h3 (better 23.Nd5 Qc5 24.Rb4 Rd5 25.Qf7 b6+–) 23...Rd2 24.Nb5 (better 24.Ne5 Qc5 25.Rb3 Qe3 26.Kh2 a5 27.Qf7 Qc5+–) 24...Bc5 (24...a6 25.Nd4 c5 26.Nf3 Rc2 27.Qh7 Ra2 28.Nfe5+–) 25.Qh7 (25.Rbd1!? Bb4+–) 25...Be3 26.Kh1 Rd8 (26...a6 27.Ne3 ab5 28.Rb5+–) 27.Ne5 (better 27.Rfe1!? Qe6+–) 27...Bb6 28.Qf7 Qc5 29.Nd7 Rd7 (29...Kc8 30.Nc5 a6 31.Rbd1 Rh8 32.Qd7 Kb8 33.Qd8 Rd8 34.Rd8) 30.Qd7 (30.Qe8 Rd8 31.Qd8) 30...a6 (30...Qe7 31.Qe7 c6 32.Qe8 Bd8 33.Qd8) 31.Qe8 (31.Qd8) 1–0. Akrapovik (1650) – Kathiryoji (1670), lichess.org, 2020.

4.Ne5 f6

5.Nd3 b6 (5...Bg4!?+=) 6.e3+/– de3 7.de3 g6 8.Be2 h5 9.0–0 Nc6 (9...Bd6 10.Nc3+–) 10.b5 (10.Bf3 Bb7 11.Be4 Rh6+–) 10...Nb4 (10...Nce7 11.Nc3+–) 11.Nb4 (11.Bf3 Bg4 12.Bg4 Nd3 13.cd3 hg4 14.Qg4 Kf7+–) 11...Bb4 (11...Qd1 12.Rd1 Bb4 13.Bf3+–) 12.Qd8 (12.Bd3!? Bg4 13.Bg6 Ke7+–) 12...Kd8 13.a4 a5 14.c4 Ne7 (14...Bg4 15.Bd3 g5+–) 15.Bf6 Rf8 16.Be7 (16.Bf3 Ra7 17.Rd1 Ke8+–) 16...Be7 (16...Ke7 17.Rc1+–) 17.Bf3 Bf6 18.Ra3 Be6?? (18...Rb8+–) 19.Ba8 Ke7 (19...Bc4 20.Rc1 Be2 21.Nc3+–) 20.Bd5 Bf5 21.e4 Be6 22.Re1 Bd4 23.Re2 g5 24.Nd2 (24.Rd3 Bg4 25.Red2 Be5+–) 24...g4 (24...Bg4 25.Nf3 Bf3 26.Rf3 Rf3 27.gf3+–) 25.g3 Kd6 26.Nf1 (better is 26.Rd3 Bc5+–) 26...Kc5 (26...Ke5 27.Rd3 Bc5 28.Nd2+–) 27.Ne3 (27.Be6 Kb4 28.Rd3 Rf6+–) 27...Rf3 (27...Bd7+–) 28.Be6 Be3 29.Ree3 Re3 30.Re3 Kd6 31.Bf7 Kc5 32.e5 Kb4 33.e6 Ka4 34.e7 Kb4 (34...c5 35.bc6 b5 36.c7 Kb4 37.e8Q bc4 38.Qb8 Kc5 39.c8Q Kd4 40.Qd6) 35.e8Q a4 (35...c5 36.bc6 a4 37.Qe5 b5 38.Qb5) 36.Qe7 Ka5 (36...c5 37.bc6 Ka5 38.Qa7 Kb4 39.Qb6) 37.Qc7 (37.Rd3 a3 38.Ra3) 37...Kb4 (37...h4 38.Qd6 hg3 39.Qd2) 38.Qd6 1–0. Trkn – erikdred, itsyourturn.com, 2000.

5.Nf3 Bb4 6.Nd4 c5 7.Nf3 Bg4 8.e3 Nh6 9.Bb5 Nd7 10.a3 0–0?? (better 10...Ba5+–) 11.ab4+– Ne5 (11...cb4 12.c3+–) 12.Be5 (better 12.bc5!? Bf3 13.gf3 Qd5+–) 12...fe5 13.Be2 (better 13.bc5 e4 14.Be2 ef3 15.gf3+–) 13...e4 14.Ne5 Be2 15.Qe2 (15.Ke2?! Qf6 16.f4 ef3 17.gf3 Qe5=+) 15...cb4? (better 15...Qf6 16.Qc4 Nf7+–) 16.Qc4 Kh8 (16...Nf7 17.Nf7 Rf7 18.0–0+– (18.Qb4?! Qf6 19.Nc3 Qf2 20.Kd1 Qg2+–; worse 18.Qe4 Qf6 19.Ra4 Qf2 20.Kd1 a5+–)) 17.0–0 (17.Qe4 a5+–) 17...a5 18.c3 (18.Qe4 Nf7+–) 18...bc3 19.Nc3 (19.Qc3?! Qd5+–) 19...Re8 20.Nf7 (better 20.Qb5!? Qc7 21.f4 ef3 22.Nf3 Red8+–) 20...Nf7 21.Qf7 Rf8 (21...Qd2 22.Qb3 Rac8+–) 22.Qb7 Qd2 23.Ne4 Qd8 (23...Qb4 24.Rfb1 Qb7 25.Rb7 Kg8+–) 24.Ng5! Qf6?? (24...Qg5 25.Ra4 Combination) 25.h4 (better 25.f4 Rae8+–) 25...Rab8 (25...h6 26.Nf3+–) 26.Qe4 g6 27.Ra5 Rbe8 28.Qd4 (28.Qb4 Rb8 29.Qc5 Qb6+–) 28...Qd4 (28...h6 29.Nf3 Kg7 30.Rfa1+–) 29.ed4 Rf4 (29...h6 30.Nf3+–) 30.Nf3 h5 (30...Kg7 31.Rd1+–) 31.Ra7 Rd8 (31...Kg8 32.Rb1 Rf7 33.Ra6+–) 32.Re1 1–0. GuestJPWZ – Guesting, freechess.org, 2018.

5.Nf3 Bb4 6.Nd4 Nc6 7.e3 Nd4 8.Bd4 Ne7 9.Bc4 c5 (better 9...Nc6!?+–) 10.Bc5!+– Bc5 11.Qh5 g6 12.Qc5 b6 13.Qd4 (13.Qb5 Qd7+–) 13...Qc7? (13...Qd4 14.ed4 Bb7 15.f3+–) 14.Bb5 (better 14.Qf6 Rf8 15.Qh4+–) 14...Nc6?? (better 14...Kf7+–) 15.Qf6 Rf8 (15...Kd7 16.Qh8 Kd6 17.Nc3+–) 16.Bc6 (better 16.Qc6 Qc6 17.Bc6 Ke7 18.Ba8+–) 16...Bd7 17.Bd7 (17.Ba8?! Rf6 18.Nc3 Bc6 19.Bc6 Qc6+–) 17...Qd7 18.Qe5 Kd8 19.Nc3 Re8 (19...Rc8 20.Rd1+–) 20.Qg5 Re7 (20...Kc8 21.Rd1+–) 21.Nd5 Qf5 (21...h6 22.Qe7 Qe7 23.Ne7 Ke7+–) 22.Qe7 (22.Qe7 Kc8 23.Qc7; 22.Ne7?! Qg5 23.Nc6 Kc7+=) 1–0. GuestDPKR – antonfed, freechess.org, 2017.

5.Nf3 Bb4 6.Nd4 Ne7 7.e4 0–0 8.Bc4 Kh8 9.0–0 Nbc6 10.Nc6 Nc6 11.d4 a6 12.f4 Bd7 (12...Rb8 13.a3 Bd6 14.e5+–) 13.e5 (13.a3 Ba5 14.f5 Bb6+–) 13...fe5 14.c3 (worse 14.de5 Qe7 15.Kh1 Rae8+=) 14...Ba5 (14...Be7 15.fe5 Bf5 16.Ba3+–) 15.fe5 Bb6 16.Kh1 Qe7 (16...Qg5 17.Qd3 Na5 18.Na3+–) 17.Ba3+– Qg5?? (better 17...Rf1 18.Qf1 Qe8+–) 18.Bf8 (18.Bf8 Bf5 19.Ba3+–) 1–0. GuestYXKJ – GuestPRWV, freechess.org, 2019.

5.Nf3 Bb4 6.Nd4 Nh6 7.c3 (7.e3 Nf7+–) 7...Bc5 (7...Bd6 8.e3+–) 8.Qb3 (8.e3 Nf7+–) 8...Bd4 (8...Bd6 9.e3+–) 9.cd4 Nc6 (9...Nf5 10.e3+–) 10.e3 (10.d5 Ne7+–) 10...a6 (10...Nf7 11.Be2+–) 11.Be2 Qd6 (11...Na5 12.Qc3 Nc6 13.Bf3+–) 12.Ba3 Qd7 13.0–0 Nf7 (13...Nf5 14.d3+–) 14.Nc3 Na5 (14...Nd6 15.d3+–) 15.Qc2 b5?? (better 15...Nc6+–) 16.Qe4 Qe6 (16...Kd8 17.Qa8 Qc6 18.Qc6 Nc6 19.Rac1+–) 17.Qa8 Nc4 18.Nd5 Kd7 (18...Kd8 19.Bc4 bc4 20.Rfc1+–) 19.Nf4 Qf5 (19...Nb6 20.Qa7 Qf5 21.Rac1+–) 20.d5 (20.d5 Na3 21.Qc6 Ke7 22.Qc5 Kd8 23.Qa3+–) 1–0. DEFFM – GuestXRXV, freechess.org, 2018.

5.Nf3 c5 6.bc5 Bc5 7.c3 d3 8.ed3 (8.Qb3+–) 8...Ne7?? (better 8...Qb6 9.Qb3 Bf2 10.Kd1 Be6 11.Qb6 Bb6+= (11...ab6? 12.d4+–)) 9.d4+– Bd6 10.Bc4 a6 11.Kf1 (11.0–0!? Nbc6+–) 11...Nbc6 12.Qb3?? (12.Qe2 b5 13.Bd5 Qd7+–) 12...Rf8?? (12...Na5 13.Bb5 ab5 14.Qb5 Bd7 15.Qe2–+) 13.g3?? (better 13.Be2+–) 13...Na5–+ 14.Qa4 (14.Bb5 ab5 15.Qb5 Bd7 16.Qe2–+) 14...Bd7 15.Qc2 Nc4 16.Ba3? (16.Kg2–+) 16...Ba3 17.Na3 Na3 18.Qh7 Bb5 (better 18...Bc6!? 19.Kg2 Qd5 20.Qd3–+) 19.Kg2 Nc2! 20.Rab1?? (20.Qc2 Qd6 Combination) 20...g5 (better 20...g6 21.Rb2 Bc6–+) 21.Qc2–/+ Bc6 22.Rhe1 g4?? (22...f5 23.h3 Rf7–+) 23.Qg6+= Kd7 24.Qg4 Kc7 (24...f5 25.Qh5+=) 25.Kg1 (25.c4+–) 25...Rg8? (better 25...Qd7!? 26.Qd7 Kd7+–) 26.Qf4+– Qd6?? (better 26...Kc8 27.Qf6 Bf3 28.Qe7 Qd7+–) 27.Qd6 (better 27.Re7 Bd7 28.Rb7 Kb7 29.Qd6+–) 27...Kd6+= 28.Nh4 Rae8 (28...b5 29.Re2+=) 29.c4+– 1–0. GuestHGPG – GuestLLZT, freechess.org, 2017.

4.Ne5 Qf6?

5.Bd4+– Nc6 6.Nc6 Qc6 7.Nc3 Qc4 8.Be5 (better is 8.e3 Qb4 9.Nb5+–) 8...Qb4? (better is 8...f6 9.e4 Qf7+–) 9.Nd5 (9.Bc7?! Nf6+–) 9...Qa5 10.Nc7 Kd8 (10...Kd7 11.Bg3 (11.Na8?! Qe5 12.c3 Qb8+–) 11...Rb8 12.e4+–) 11.Bg3 (11.Na8?! Qe5 12.e3 Nf6+/–) 11...Rb8 12.Nb5! Qb5 13.Bb8 Bf5 (13...a6 14.e3 Qc6 15.c4+–) 14.Ba7 b6 (14...Qc6 15.Qb1+–) 15.e4! Be4 (15...Qa5 16.Bb6! Qb6 17.ef5 Bd6+–) 16.Bb5 Kc8 17.Qg4 Kb7 (17...f5 18.Qf4 Bc6 19.Bc6 Kd8 20.Bb6 Ke7 21.Qe5 Kf7 22.Be8) 18.Qd7 Ka8 19.Bb6 Nf6 (19...Kb8 20.Qc7 Ka8 21.Qc8) 20.Qa7 1–0. fajgo – vello01, internet, 2002.

5.Nf3 Bb4 6.Bd4 Qd6 7.Bg7 Nf6 8.Bh8 Nc6 9.c3 Ba5 10.Bf6 (10.Qa4 Bb6+–) 10...Qf6 11.d4 Be6 12.d5 (better 12.e3 0–0–0+–) 12...Ne5 (12...Bd5 13.Nfd2 0–0–0+–) 13.de6 (better 13.Ne5 0–0–0 14.Qc2 Bd5+–) 13...fe6 (13...Nf3 14.ef3 Bc3 15.Nc3 Qc3 16.Ke2 Qe5 17.Kd2 Rd8 18.Bd3 Qf4 19.Kc2 Qa4 20.Kb1 Qb4 21.Qb3 Qb3 22.ab3 Rd3 23.Kc2+–) 14.e3 (better 14.Ne5 Qe5 15.Qb3 0–0–0+–) 14...Nf3 15.Qf3 (better 15.Ke2 Ne5+–) 15...Bc3 16.Nc3 (better 16.Ke2 Qf3 17.Kf3 Ba1 18.Bd3+–) 16...Qc3= 17.Ke2 Qa1?? (better 17...Qc2 18.Ke1 Qc3 19.Ke2 Qc2 20.Ke1 Qc3 21.Ke2=) 18.Qh5+– Kd7 (18...Kd8 19.Qh4 Ke8 20.Qa4 Kf8 21.f4+–) 19.Qh7 Kd6 20.Qd3 Ke7 21.Kf3 (better 21.Qa3 Kd7 22.Qb3+–) 21...Rf8?? (21...Qf6 22.Ke2 Qa1 23.Qa3 Kf7+–) 22.Kg3?? (22.Ke4 Rf2 23.Qb5+–) 22...Qa2 (22...Qg7 23.Qg6 Qg6 24.Kh4 Rh8) 23.Be2+– Qb2 (23...Qd5 24.Qh7 Rf7 25.Qh4 Rf6 26.f3+–) 24.Qh7 (better 24.f4+–) 24...Kd6?? (24...Rf7 25.Qh5 Rf5+–) 25.Qd3 (better 25.Rd1 Kc6 26.Bf3 Rf3 27.Kf3 Qf6 28.Kg4 Qb2 29.Qe4 Kc5+–) 25...Ke7 26.Qh7 Kd6 27.Rd1 Kc6 28.Qd7 (better 28.Qe4 Kc5 29.Qe6 Qg7 30.Bg4 b5 31.Rd5 Kb4+–) 28...Kb6 29.Qe6 c6 30.Qc4 (better 30.Qe7 Rg8 31.Kf3+–) 30...Qe2 (30...Qe5 31.f4 Qe3 32.Bf3 Kc7+–) 31.Qe2 Rg8 32.Kh3 Rf8 33.Rb1 (33.Qb2 Kc7 34.Qg7 Rf7 35.Qe5 Kb6 36.Rb1 Ka6 37.Qa1) 33...Kc7+– 34.Qh5 (34.Qb2 b5 35.Qg7 Kb6 36.Qf8 Kb7 37.Qd6 a6 38.Rc1 c5 39.Rc5 b4 40.Rc7 Ka8 41.Qd8) 34...Rh8 35.Qh8 a5 (35...a6 36.Qg7 Kd6 37.Rd1 Ke6 38.Qd7 Kf6 39.Rd6 Ke5 40.Qe6) 36.Qg7 Kb8 (36...Kd6 37.Rd1 Kc5 38.Qd4 Kb5 39.Rb1 Ka6 40.Qb6) 37.Qb7 1–0. alessandrocarvalhaes (1830) – dvs15lsa (1855), lichess.org, 2020.

4.Ne5 Nf6

5.c4 Bb4?? 6.Qa4+– Nc6 7.Nc6 bc6 8.Qc6 1–0. GuestKRWG – GuestZMZN, freechess.org, 2019.

5.c4 Nc6 6.Nc6 bc6+=.

5.e3 de3= 6.Bc4 (6.fe3 Bb4 7.Bc4 Be6+=) 6...ef2 7.Kf2 Ne4 8.Kg1 Qf6 (8...Nd6!?=) 9.Qe2+– Qf5?? (better 9...Qb6 10.d4 f5+–) 10.Nf7+– (10.Bf7?! Kd8 11.Bd5 Nd6+–) 10...Rg8 (10...Bc5 11.bc5 Rf8 12.Ba3+– (12.Bg7?! Rf7 13.Bf7 Kf7+–)) 11.Ng5!! Kd8 (11...Qg5 12.Qe4 Double attack (12.Bg8 Discovered attack; 12.Qe4 Deflection)) 12.Ne4 (better 12.Qe4 Qe4 13.Ne4+–) 12...Bb4 (12...Rh8+–) 13.Bg8 Nc6 (13...Qg6 14.Qd3 Nd7 15.Nf2+–) 14.Bg7 Nd4 1–0. DEFFM – GuestTXGZ, freechess.org, 2018.

5.Nf3 Bb4 6.Bd4 Nc6 7.Bc3 Bg4 8.e3 0–0 9.Be2 Qd6 10.0–0 Rae8 11.Bb4 Qb4 12.Nc3 Ne5? (better 12...b6+–) 13.Ne5 Re5 14.Bg4 (better 14.Rb1 Be2 15.Qe2+– (15.Rb4?! Bd1 16.Rd1 b6+–; 15.Ne2?! Qe4+–)) 14...Ng4? (14...Qg4!? 15.Qg4 Ng4+–) 15.h3 (better 15.Rb1!? Qc4+–) 15...Nf6 16.Rb1 Qc4 (16...Qd6 17.Rb7 Ra5 18.d3+–) 17.Rb7 Rd8 (17...Ra5 18.Qf3+–) 18.Ra7 Ne4 19.Ra4 Qc6 20.Re4 Re4 21.Ne4 Qe4 22.d4 c5 23.c3 cd4 24.cd4 h6 25.Qb3 g5 (25...Rc8 26.Rd1+–) 26.a4 (26.Qb6 Qd5 27.Qh6 Rd6+–) 26...h5 Black prepares g4 (26...Ra8 27.Ra1+–) 27.a5 g4 28.hg4 Qg4 (28...hg4 29.a6+–) 29.a6 h4 (29...Qd7 30.Qb7+–) 30.a7 h3 31.g3 (better 31.Qb7+–) 31…Qf3–+ (31...Qf3 32.Qd5 Qd5–+) 0–1. Abdullaevich (1760) – anatol14, lichess.org, 2019.

3.Nf3 e6

4.a3 a5 A) 5.Nd4 A1) 5...ab4 6.ab4 (6.e3 Nf6 7.ab4 Ra1 8.Ba1 Bb4 9.Bc3 Bc5 10.Bb5) 6...Ra1 7.Ba1 e5 8.Nf3 e4 9.Ne5 Nf6 10.c4; A2) 5...e5 6.Nb3 (6.Nf3 e4 7.Ne5 Be6 8.e3 ab4 9.ab4 Ra1 10.Ba1) 6...ab4 7.ab4 Ra1 8.Ba1 Nd7 9.Bc3 Ngf6 10.e3; A3) 5...Nf6 6.ba5 (6.b5 e5 7.Nb3 a4 8.Nc1 Bd6 9.Nc3 0–0 10.g3) 6...Ra5 7.e3 Nc6 8.Nc6 bc6 9.Nc3 Be7 10.Bd3; B) 5.b5 B1) 5...c5 6.c3 (6.e3 Nf6 7.ed4 Nbd7 8.Bd3 cd4 9.Bd4 Bc5 10.Be3) 6...d3 7.ed3 Nf6 8.a4 Nbd7 9.Na3 Nb6 10.Be2; B2) 5...Nf6 6.Bd4 (6.Nd4 e5 7.Nf3 e4 8.Ne5 Nbd7 9.Nc4 Bc5 10.Nc3) 6...Nbd7 7.Nc3 Bc5 8.e3 Bd6 9.e4 e5 10.Be3; B3) 5...Bc5 6.c3 (6.d3 Nf6 7.Nbd2 0–0 8.Nb3 Bd6 9.Bd4 Nbd7 10.Nbd2) 6...d3 7.ed3 Nf6 8.d4 Be7 9.c4 Nbd7 10.Nc3.

4.a3 a6 5.Bd4+/– Nc6 6.e3 (6.Bb2 Nf6+/–) 6...Nd4+= 7.ed4 Nf6 8.c3 Bd6 9.Bd3 b5 10.Ne5 Bb7 11.0–0 (11.Qe2 0–0 12.0–0 Nd5+=) 11...0–0 (11...Be5 12.de5 Qd3 13.ef6=) 12.f4 Qc8 13.a4 Bd5 14.Na3 ba4 (14...Qb7!? 15.Qe2 c6+/–) 15.Qa4 Qb7 16.Rf2 Be7 (16...Rfb8 17.Nac4+/–) 17.Nac4 Bc4 (17...Rfe8 18.Ne3+–) 18.Bc4+– Ne4 (18...Bd6 19.Ba6 Qb8 20.Qc6+–) 19.Re2 Bf6 20.Nd7 Rfd8 21.Bd3 (21.Ba6?! Bd4 22.cd4 Qd5+/–; 21.Nf6?! Nf6 22.f5 ef5+–) 21...Nd6 22.Nf6 gf6 23.f5 ef5 24.Rf2 Rdc8 (24...Qd5 25.Qa5 Qa5 26.Ra5+– (worse is 26.ba5 c5+–)) 25.Bf5 Nf5 26.Rf5 Kg7 (26...Re8 27.Rf6 Re2 28.Rf3+–) 27.Qd1 (27.Raf1 Re8+–) 27...Rg8 28.Qf3 (28.Qf1!? Qc6+–) 28...Qf3 29.Rf3 Rge8 30.Re3 Re6 31.Kf2 f5 32.Ra5 Re3 (32...Rf6 33.Re7 c6 34.d3+–) 33.de3 Kf6 (33...Re8 34.Ra6 Rb8 35.Kf3+–) 34.b5 Ke6 (34...Kg7+–) 35.Ra6 (35.Ra6 c6 36.Ra8 cb5 37.Rb8+–) 1–0. Drexhage,Ulrich – McMichael,Andrew, IECG, 2000.

4.a3 Nc6 5.b5+/– Nce7 6.Bd4 f6 (6...Nf5 7.Bb2+/–) 7.e4 Ng6 8.Be3 b6 (8...Bd6 9.Bc4+/–) 9.Bc4+– Bc5 (9...Qd6 10.Nc3+–) 10.Bc5 bc5 11.0–0 N8e7 12.Nc3 0–0 13.d4 cd4 14.Nd4 Kh8 (14...Kf7 15.f4 Qd6 16.f5+–) 15.Ne6 Qd1 (15...Be6 16.Be6 a6 17.Qd8 Rfd8 18.Rfd1+–) 16.Rad1 Be6 17.Be6 c6 (17...Rad8 18.g3+–) 18.Rd7 Ne5 (18...cb5 19.Nb5 Rfd8+–) 19.Re7 cb5 20.Nb5 Rae8 21.Re8 Re8 22.Rd1 h6 23.Rd6 Kh7 (23...Rb8 24.c4+–) 24.Na7 Ng6 25.c4 Nf4 26.Bd7 Rd8 (26...Ra8 27.Nb5 Ra4+–) 27.Bf5 Kg8 28.Rd8 (28.Rd8 Kf7 29.c5 Ne2 30.Kf1+–) 1–0. kamret (2180) – Phylogeny, GameColony.com, 2003.

4.a3 d3 5.cd3 (5.ed3 a5+/–) 5...Nc6 (5...Nf6 6.Nc3+/–) 6.b5 (6.Nc3 Nf6+/–) 6...Na5 (6...Nce7 7.Qa4+/–) 7.Qa4 (7.Bc3 b6+/–) 7...b6 8.d4 (8.Nc3 a6+/–) 8...Nf6 9.e3 (9.Bc3 a6+/–) 9...Bd7+= 10.Qc2 (10.Ne5 a6+/–) 10...Nd5 (10...c6!?+=) 11.Ne5+/– Bc8 (11...Rc8 12.e4 Nf4 13.Qc3+/–) 12.Nc3 (12.e4 Ne7+/–) 12...Nc3 (12...f6 13.Nc4 Nc4 14.Bc4+/–) 13.Bc3+– Nb7 (13...f6 14.Ba5 fe5 15.Bc3 ed4 16.Bd4+– (16.ed4?! Bb7+=)) 14.Bb2 (14.Be2 Bd6+–) 14...Nd6?? (better is 14...Na5+–) 15.Qc6 (15.Qc6 Bd7 16.Nd7+– (16.Qd7?! Qd7 17.Nd7 Kd7+–)) 1–0. Wall,Bill – Rigimon, internet, 2004.

4.a3 Bd6 A) 5.Nd4 A1) 5...Ne7 6.Nb5 (6.Nc3 Nbc6 7.Nf3 0–0 8.Ne4 Ng6 9.e3 f5 10.Nd6) 6...0–0 7.Nd6 cd6 8.Nc3 Nbc6 9.e3 e5 10.Bd3; A2) 5...e5 6.Nf3 (6.Nb5 Nf6 7.N1c3 0–0 8.Nd6 Qd6 9.e3 a5 10.Nb5) 6...Nf6 7.Ne5 0–0 8.d4 Nc6 9.Nd2 Ng4 10.Ng4; A3) 5...Nf6 6.Nc3 (6.Nb5 Nc6 7.Nd6 cd6 8.Nc3 0–0 9.e3 a6 10.Be2) 6...0–0 7.e3 e5 8.Ndb5 Be7 9.d4 e4 10.d5; B) 5.d3 B1) 5...a5 6.Nd4 (6.Nbd2 Nf6 7.Nd4 0–0 8.ba5 e5 9.Nb5 Nc6 10.Nc4) 6...Nf6 7.Nd2 0–0 8.b5 Nbd7 9.Nc4 Nc5 10.a4; B2) 5...Nc6 6.b5 (6.Nbd2 Nf6 7.b5 Na5 8.Bd4 0–0 9.Ne5 Qe7 10.e3) 6...Ne5 7.Nbd2 Nf3 8.Nf3 Nh6 9.Bd4 0–0 10.e4; B3) 5...Nf6 6.Nbd2 (6.Nd4 Nc6 7.Nc6 bc6 8.Nd2 0–0 9.Nc4 Rb8 10.e4) 6...Nc6 7.b5 Na5 8.Bd4 0–0 9.Ne5 Bd7 10.c4; C) 5.e3 C1) 5...Ne7 6.ed4 (6.Nd4 0–0 7.Nb5 Nbc6 8.Nd6 cd6 9.Nc3 e5 10.Bd3) 6...0–0 7.Nc3 Nbc6 8.b5 Na5 9.Bd3 Nd5 10.g3; C2) 5...Bd7 6.Nd4 (6.ed4 Nf6 7.Nc3 0–0 8.Bd3 Nc6 9.0–0 a6 10.Qe2) 6...Nf6 7.Nc3 Nc6 8.Nc6 bc6 9.Bd3 a5 10.0–0; C3) 5...Nf6 6.Nd4 (6.ed4 0–0 7.Bd3 Nd5 8.0–0 Nf4 9.Nc3 Nd3 10.cd3) 6...0–0 7.Nc3 e5 8.Nf3 Nc6 9.b5 Na5 10.Be2; D) 5.e4 D1) 5...Nh6 6.Nd4 (6.e5 Be7 7.Nd4 0–0 8.Bb5 Bd7 9.Qf3 c5 10.bc5) 6...0–0 7.Nc3 Nc6 8.Nc6 bc6 9.Bc4 a5 10.b5; D2) 5...c5 6.c3 (6.e5 Be7 7.c3 Nh6 8.bc5 d3 9.Nd4 Nc6 10.Bd3) 6...Nd7 7.Qa4 cb4 8.ab4 Ne7 9.cd4 0–0 10.Nc3; D3) 5...e5 6.c3 (6.Bd3 Nf6 7.c3 0–0 8.0–0 Re8 9.Qe2 Nc6 10.b5) 6...dc3 7.Nc3 Nf6 8.Bb5 Nc6 9.d4 ed4 10.Nd4.

4.a3 Bd7 5.Nd4 Nf6 6.Nf3 a6 (6...a5!?=) 7.c4 b6 8.e3 Bc6 9.d4 g6 (white timed out). chessxliv (2130) – smoothoperator (2100), net–chess.com, 2014.

4.a3 Be7 5.Bd4 Bf6 6.e3 Nc6 (6...Bd4 7.Nd4 e5 8.Nb3+–) 7.Bf6 Qf6 (7...Nf6 8.d4+–) 8.Nc3 (8.d4 Nh6+–) 8...Nge7 (8...e5 9.d4+–) 9.Nb5 0–0 (9...Kd8!? 10.Nc3+–) 10.Nc7 Rb8 11.Bd3 (11.b5 Ne5 12.d4 Nf3 13.Qf3 Qf3 14.gf3 b6+–) 11...a6 (11...e5 12.0–0+–) 12.0–0 (12.b5 ab5 13.Nb5 e5+–) 12...Rd8 (12...e5 13.b5 ab5 14.Nb5+– (worse 14.Bb5 Qd6–/+)) 13.b5 Ne5 (13...ab5 14.Nb5 (14.Bb5?! Rd7+=) 14...e5 15.Qe2+–) 14.Rb1 (14.ba6 Nf3 15.Qf3 Qf3+–) 14...Rd7 (14...Nd3 15.ba6 Nc6 16.cd3+–) 15.Ne5 Qe5 16.b6 Nf5 (16...Qa5 17.Qg4+–) 17.Qg4 (17.Qh5 Qa5+–) 17...Nd6 (17...Nh6 18.Qh4+–) 18.Qb4 a5 (18...Qh5 19.c4+–) 19.Qd4 (19.f4 Qe3 (19...ab4?? 20.fe5 Nf5 21.Rb4+–) 20.de3 ab4 21.Rb4 Nf5 22.Bf5 ef5+–) 19...Qd4 20.ed4 f6 (20...Rd8 21.Rfe1+–) 21.Ne6 Re7 22.Nc5 (22.Nc7 Bf5 23.Bf5 Nf5+–) 22...Bg4 (22...Bf5 23.Bf5 Nf5 24.d5+–) 23.Rfe1 Rbe8 24.Re7 (24.Re3 Kf7+–) 24...Re7 25.Nb3 a4 26.Nc5 f5 (26...Bf5 27.Bf5 Nf5 28.d5+–) 27.Na4 f4 28.c4 Nf5 (28...Bf5 29.Bf5 Nf5+–) 29.f3 1–0. Janek – Mezemis, internet, 2017.

4.a3 Ne7 A) 5.e3 A1) 5...Nd5 6.Nd4 (6.Bd4 Nc6 7.c4 Nd4 8.Nd4 Nf6 9.Nc3 e5 10.Nf3) 6...e5 7.Nf3 e4 8.Ne5 Nd7 9.Qh5 Qf6 10.Nc4; A2) 5...a5 6.Nd4 (6.Bd4 Nbc6 7.Nc3 Nf5 8.Bc5 Bc5 9.bc5 0–0 10.Rb1) 6...ab4 7.ab4 Ra1 8.Ba1 Nbc6 9.Nc6 Nc6 10.b5; A3) 5...de3 6.fe3 (6.de3 Qd1 7.Kd1 a5 8.b5 Nd7 9.Nbd2 Nc5 10.e4) 6...Nbc6 7.Bd3 Nd5 8.Nc3 a6 9.0–0 Be7 10.Nd5; B) 5.e4 B1) 5...de3 6.fe3 (6.de3 Qd1 7.Kd1 a5 8.b5 Nd7 9.Nc3 Nc5 10.Bc4) 6...Nd7 7.Nc3 a5 8.Bb5 c6 9.Bd3 ab4 10.ab4; B2) 5...a5 6.Bd4 (6.Bd3 ab4 7.ab4 Ra1 8.Ba1 Ng6 9.Nd4 Bb4 10.0–0) 6...Nec6 7.Bb5 Bd7 8.Bb2 ab4 9.0–0 Ra5 10.Bc4; B3) 5...c5 6.c3 (6.Bb5 Bd7 7.Qe2 Qb6 8.a4 Nec6 9.a5 Qc7 10.bc5) 6...d3 7.Qb3 Nbc6 8.c4 Ng6 9.b5 Na5 10.Qd3; C) 5.Bd4 C1) 5...Nf5 6.Bb2 (6.Bc3 Nc6 7.e3 a6 8.Bd3 Be7 9.g4 Nd6 10.Bg7) 6...Nc6 7.Nc3 Be7 8.e4 Nh4 9.Nh4 Bh4 10.Bd3; C2) 5...a5 6.b5 (6.Nc3 Nbc6 7.e3 Nd4 8.Nd4 Nf5 9.Nb3 ab4 10.ab4) 6...Nf5 7.Bb2 Bd6 8.e4 Nh4 9.e5 Bc5 10.Nc3; C3) 5...Nbc6 6.Bb2 (6.Bc3 Nf5 7.e3 a6 8.Bd3 Be7 9.g4 Nd6 10.Bg7) 6...Nf5 7.Nc3 Be7 8.e4 Nh4 9.Nh4 Bh4 10.Bd3; D) 5.Nd4 D1) 5...Nec6 6.Nf3 (6.Nc6 Nc6 7.e3 h5 8.b5 Na5 9.Be2 Bd7 10.Nc3) 6...Nd7 7.e3 a6 8.g3 f6 9.Nc3 Bd6 10.Be2; D2) 5...Bd7 6.Nf3 (6.Nc3 Nbc6 7.Nc6 Nc6 8.e3 Bd6 9.b5 Ne5 10.f4) 6...Nbc6 7.e3 Nf5 8.Bd3 a6 9.Nc3 Be7 10.Ne4; D3) 5...Nbc6 6.Nc6 (6.Nf3 Nf5 7.Nc3 Be7 8.e4 Nh4 9.Nh4 Bh4 10.Bd3) 6...Nc6 7.e3 Bd7 8.Qf3 f6 9.b5 Na5 10.Bd3.

4.a3 Nf6 A) 5.Nd4 A1) 5...a5 6.b5 (6.e3 ab4 7.ab4 Ra1 8.Ba1 Bb4 9.Bb5 Nbd7 10.Nc3) 6...Bc5 7.e3 0–0 8.Nf3 Nbd7 9.Nc3 e5 10.Bd3; A2) 5...e5 6.Nf3 (6.Nb3 Bd6 7.Nc3 0–0 8.e3 Nc6 9.Bd3 Qe7 10.f3) 6...e4 7.Ne5 Bd6 8.Nc4 0–0 9.Bf6 Qf6 10.Nc3; A3) 5...c5 6.Nf3 (6.bc5 Bc5 7.Nb3 Bb6 8.c4 Nc6 9.c5 Bc7 10.Nc3) 6...cb4 7.c3 bc3 8.Nc3 Nc6 9.e3 Be7 10.Qc2; B) 5.c3 B1) 5...a5 6.b5 (6.Qa4 Bd7 7.b5 d3 8.ed3 c6 9.Qb3 cb5 10.d4) 6...dc3 7.Nc3 Nbd7 8.d4 Bd6 9.e4 e5 10.Bc4; B2) 5...dc3 6.Nc3 (6.Bc3 Bd6 7.Bf6 Qf6 8.Nc3 Nc6 9.Ne4 Qg6 10.Nd6) 6...Nc6 7.d4 Be7 8.b5 Na5 9.e3 0–0 10.Bd3; B3) 5...d3 6.ed3 (6.h3 Bd6 7.ed3 0–0 8.Be2 a5 9.0–0 Bd7 10.d4) 6...Bd6 7.c4 0–0 8.Nc3 Nc6 9.Nb5 e5 10.c5; C) 5.b5 C1) 5...a6 6.Nd4 (6.Bd4 ab5 7.Nc3 Nc6 8.Bf6 gf6 9.Nb5 e5 10.e3) 6...ab5 7.e3 Nc6 8.Bb5 Bd7 9.Qf3 Nd4 10.Bd7; C2) 5...c5 6.e3 (6.c3 d3 7.ed3 Nbd7 8.a4 Bd6 9.Na3 Nb6 10.Be2) 6...de3 7.fe3 Nbd7 8.Bd3 Bd6 9.0–0 0–0 10.Nc3; C3) 5...Bc5 6.c3 (6.e3 de3 7.de3 0–0 8.Nbd2 a6 9.Nb3 Bd6 10.a4) 6...d3 7.ed3 0–0 8.d4 Bd6 9.c4 Nbd7 10.Nc3; D) 5.Bd4 D1) 5...Bd6 6.e3 (6.Nc3 Nc6 7.Bf6 Qf6 8.e3 0–0 9.Ne4 Qe7 10.Bd3) 6...Nc6 7.Bb2 0–0 8.Bd3 e5 9.Nc3 Re8 10.Ng5; D2) 5...Bd7 6.e3 (6.Bb2 a5 7.Nc3 ab4 8.ab4 Ra1 9.Qa1 Bb4 10.e3) 6...Nc6 7.Bb2 Bd6 8.Bd3 0–0 9.0–0 Qe7 10.c4; D3) 5...Nc6 6.Bb2+= (6.Bf6 Qf6 7.Nc3 Be7 8.Nb5 Bd8 9.e3 a5 10.ba5; 6.Bc3 a6 7.e3 Bd7 8.Bd3 Bd6 9.Bb2 0–0 10.Nc3) 6...Bd6 7.e3 0–0 8.Bd3 e5 9.Nc3 Re8 10.Ng5.

4.b5 a6 5.a4 ab5 (5...Nf6 6.Bd4 ab5 7.ab5 Ra1 8.Ba1+–) 6.ab5+– (worse 6.Nd4 b4=+) 6...Ra1 7.Ba1 c6 8.Bd4 (8.Nd4 Nf6+–) 8...cb5 9.e3 Bd7 (9...b4 10.Ne5+–) 10.Ne5 (10.Nc3 b4 11.Nb5 Nf6+–) 10...Nc6 11.Nd7 Qd7 12.Bb5 Qe7? (better 12...Nh6!?+–) 13.0–0 Nf6 14.c4 Qd8 (14...Qc7 15.Bf6 gf6 16.d4+–) 15.Qf3 Be7 (15...Qd6 16.Bf6 gf6 17.d4+–) 16.Bc6 bc6 17.Qc6 Kf8 (17...Qd7 18.Qa8 Qd8 19.Qb7+–) 18.c5 (18.Nc3 Qe8 19.Qb7 Qd7 20.Qa8 Ne8+–) 18...g6 (18...Ng4 19.h3 e5 20.Ba1+– (worse 20.hg4 ed4 21.ed4 Qd4+–)) 19.Qb7 Kg7 20.c6 (20.Nc3 Re8 21.c6 Kh6+–) 20...Bd6 (20...Qd6 21.f4 Re8 22.Nc3+–) 21.f4 Qe7 (21...Re8 22.Nc3 Kg8 23.Bf6 Qf6 24.c7 Bc7 25.Qc7+–) 22.Bf6 Kf6 (22...Qf6 23.c7 Bc7 24.Qc7 Qb2+–) 23.Qb2 Kf5 24.Qh8 Qc7 25.h3 Qc6 26.g4 Ke4 27.Qd4 1–0. GuestXJBP – GuestNLQR, freechess.org, 2020.

4.b5 c5 5.c3 Qb6 6.a4 Nc6 7.Na3 (7.bc6?! Qb2 8.Na3 dc3=) 7...Na5 (7...dc3 8.Bc3 Nb4 9.Nc4+–) 8.cd4 c4? (better 8...cd4 9.Rc1 Qd6+–) 9.e3+– Nb3 (9...Nf6+–) 10.Nc4 Qd8 11.Qb3 Nf6 12.Ba3 Be7 13.Bd3 0–0 14.0–0 Re8 (14...Nd5 15.Rfc1+–) 15.Nfe5 (better 15.Rfc1 Nd5+–) 15...b6 (15...Nd5 16.Qb1 g6 17.Rc1+–) 16.Nc6 White plans a5 16...Qc7 17.Be7 Re7 18.a5 e5 (18...Rb8+–) 19.ab6 Qb7 20.Nd6 Qd7 21.Ra7 Ra7 22.ba7 Bb7 23.Nb7 Qb7 24.Ne7 Qe7 25.a8Q Ne8 26.b6 g6 (26...Qd7 27.b7 ed4 28.b8Q g6 29.Qe8 Qe8 30.Qe8 Kg7 31.Qbf7 Kh6 32.Qg6 hg6 33.Qg6) 27.b7 Kg7 (27...Qd7 28.b8Q Kg7 29.Qe5 Kh6 30.Qae8 f5 31.Qf4 Kg7 32.Qbg8 Kf6 33.Qee5) 28.b8Q Nf6 (28...Nd6 29.Qh8 Kh6 30.Qaf8 Qf8 31.Qf8 Kh5 32.Be2 Kg5 33.f4 ef4 34.h4 Kh4 35.ef4 Nc4 36.Qh6) 29.Qh8 Kh6 30.Qaf8 Qf8 (30...Kh5 31.Qd1 Kg5 32.h4 Kh4 33.Qf6 Qf6 34.Qh6) 31.Qf8 Kg5 (31...Kh5 32.Qbf7 Ng4 33.Qh7 Nh6 34.Qfh6 Kg4 35.Q7g6) 32.Qbf7 e4 (32...Ng4 33.Qh7 Ne3 34.Bg6 Nf1 35.Qh5) 33.Qf6 (33.Qf6 Kg4 34.Be2) 1–0. DEFFM – GuestBMNT, freechess.org, 2019.

4.b5 c6 5.Bd4 (5.Nd4 e5 6.Nb3 Bd6+=) 5...cb5 6.e3 (6.e4 a6+=) 6...Nc6 (6...a6!?+=) 7.Bb5+– Bd7 8.0–0 (8.Nc3 Nd4 9.Nd4 Nf6+–) 8...Nd4+= 9.Bd7 (9.Nd4 Nf6+=) 9...Qd7 10.Nd4 e5 (10...Nf6 11.d3+=) 11.Nf3+– Bd6 12.d4 e4 13.Nfd2 f5 (13...Nf6 14.c4+–) 14.c4 Nf6 15.c5 Bc7 16.Qb3 b6 17.cb6 ab6 18.Nc3 Qf7 19.Qb5 (19.Nc4 0–0 20.Nb5 Kh8+–) 19...Qd7 20.Rfc1 Ra5 21.Qc4 (better 21.Qb4 Nd5 22.Nd5 Rd5 23.Rc2+–) 21...Bd6? (better 21...Qd6!?+–) 22.Rab1 (better 22.Nce4 Ne4 23.Ne4+–) 22...Nd5?? (22...Ng4 23.h3 Nf6+–) 23.Nd5 Rd5 (23...Bh2 24.Kh2 Rd5 25.Qc8 Qc8 26.Rc8 Rd8+–) 24.Qc8 Qc8 25.Rc8 Kf7 (25...Ke7 26.Rh8 Ra5 27.Rh7 Ra2 28.Nc4+–) 26.Rh8 Bb4 (26...Bc7+–) 27.Rb4 Rb5 28.Rb5 (28.Rb5 Ke7 29.Re5 Kf7 30.Rf5 Kg6 31.Rb5 Kf7 32.Rb6 h5 33.Nc4 Ke7 34.d5 h4 35.Ne5 g5 36.Re6) 1–0. DEFFM – Vitejvpekle, freechess.org, 2018.

4.b5 Bd7 5.Nd4 (5.a4 a6 6.Nd4 ab5 7.ab5 Ra1 8.Ba1 c5 9.bc6 Nc6+–) 5...Nf6 (5...c5 6.Nf3 Bb5 7.Na3+=) 6.e3 Bc5 (6...e5 7.Nb3 a6 8.Be5 ab5 9.Nc3+–) 7.Qf3+– c6 8.Bd3 (8.Nc3 0–0 9.Bd3 cb5+–) 8...cb5+– 9.Qb7 Bd4 10.Bd4 (10.ed4?! Nc6 11.Qa6 Nb4=) 10...Bc6?? (better 10...Nc6 11.Bf6 gf6 12.Qb5 Rg8+–) 11.Bb5+– Bb5 12.Qa8 (12.Qb5?! Nbd7+–) 12...Bc6 (12...a5 13.Nc3 Bc6 14.Qa7+–) 13.Qa7 Bg2 (13...Nbd7 14.0–0 0–0 15.Nc3+–) 14.Rg1 Be4 (14...Nc6 15.Qa4 Bf3 16.Rg3+–) 15.Rg7 Bc2 (15...Nbd7 16.Nc3 Bc2+–) 16.Qf7 1–0. DEFFM – GuestSCGC, freechess.org, 2018.

4.Bd4 f6 5.b5 b6 6.e3 e5 7.Bb2 a5 (7...a6 8.d4+/–) 8.a4 Bg4 9.Be2 Bf3 (9...Bb4!?+/–) 10.Bf3+– (10.gf3?! Nd7+/–) 10...Ra7 11.0–0 Ne7 12.d4 Nd7 13.de5 fe5 (13...Ne5 14.Be5 fe5 15.Ra3+–) 14.Nd2 h6 (14...Ng6 15.Nc4+–) 15.c4 (15.Nc4 g6+–) 15...Rg8 16.Bc6 (better is 16.Ne4+–) 16...Kf7?? (16...Nc6 17.bc6 Nf6 18.Be5+–) 17.Qf3 (better is 17.Nf3 Nc6 18.bc6+–) 17...Nf6 18.Be4?? (better is 18.Rad1 Nc6 19.Qc6+–) 18...Qd2= 19.Bc1?? (better is 19.Be5!? Qd7 20.Rad1=) 19...Qb4 20.Bd3–/+ Qc3 21.Ra3+= Qb4 22.Qd1 e4–+ 23.Be2 Qb1 24.Rb3 Qa1 25.Ra3 Qe5–+ 26.Ra2 Ra8 27.Bb2 Qd6 28.Qb1 h5 29.Bf6= gf6 30.Qe4 Qe6?? 31.Qa8+– c6 32.Bh5 Kg7 33.bc6 Kh6 34.Bf3 Qh3 35.c7 Nc8 36.Qd5 Bd6 37.g3 Bc7 38.Qg8 Qf5 39.Bd1 Qb1 40.Qf8 Kg5 41.h4 1–0. Valpa – Thrustnicely, playchess.de, 2004.

4.Nd4 b6 5.a3 Bb7 6.d3 Nf6 7.e4 a6 8.Nf3 Be7 9.Be2 b5 10.Nbd2 c5 11.c3 Nc6 12.0–0 Qb6 13.bc5 Bc5 14.d4 Be7 15.d5 (better is 15.c4+–) 15...ed5= 16.ed5 Nd5 17.c4 bc4 (better is 17...Nf4=) 18.Nc4+/– Qd8 19.Bg7 Rg8 20.Bh6?? (20.Be5 Ne5 21.Nce5 Nc3+/–) 20...Rg6?? (better is 20...Nc3 21.Qc2 Ne2 22.Kh1 Rg2–+) 21.Be3 (21.Bd2!? Qd7+–) 21...Ne3+/– 22.Ne3 Kf8 23.Qb3 Rb8 24.Rfd1 Qe8 (24...Qc7 25.Bd3 Rg7 26.Qc4+/–) 25.Qc2 Rc8 (better is 25...Bf6 26.Rab1 Be7+–) 26.Qb3?? (26.Qb2 Rb8 27.Qh8 Rg8 28.Qh7 Bf6 29.Qh6 Bg7 30.Qd6 Qe7+–) 26...Rb8 27.Qc4 (27.Bd3 Re6+–) 27...Kg8 28.Qa4 Qf8 29.Bd3 Bc5? 30.Bg6 hg6 31.Qh4 Be3 32.fe3 Qg7 33.Rab1 Na5 34.Qf4 Qf8 35.Rd7 Qe8 36.Rbd1 Bf3 37.gf3 Nc6 38.R1d2 Qe6 39.R2d6 Rb1 40.Kg2 Rb2 41.Kg3 Qe5 42.Rc6 Qf4 43.ef4 a5 44.Ra6 Rb5 45.Rda7 g5 46.Ra5 gf4 47.Kf4 Rb6 48.Rg5 Kf8 49.Ra8 Ke7 50.Re5 Kf6 51.Re4 Rb2 52.h4 Kg6 53.a4 Rh2 54.Kg3 Ra2 55.a5 Ra3 56.a6 Ra5 57.a7 Kf6 58.Rf4 Kg7 59.Kg4 f6 60.Rf5 Ra4 61.f4 Ra1 62.Rb5 Rg1 63.Kf5 Ra1 64.Rb7 1–0. mic (2105) – grahamtrue (2120), net–chess.com, 2007.

4.a3 c5

5.b5 a6 6.e3 (6.c3 d3 7.ed3 ab5 8.d4 Bd7 9.Be2 Nf6 10.0–0) 6...ab5 7.ed4 Nc6 8.dc5 Nf6 9.d4 Bd7 10.Nc3.

5.b5 Bd7 6.e3 de3 7.de3 Qb6 8.c4 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 Be7?? (better is 11...f6+=) 12.Bg7+– Bf6 13.Bh8 Bh8 14.Bd3 Qa5 15.Qd2 Qa1 16.0–0 Qf6 (16...h6 17.Be4 Qa7 18.Qd6+–) 17.Qa5 e5 18.Bh7 Ne7 (18...Nh6 19.Rd1+–) 19.Be4 (better is 19.Qc7 Nec6 20.bc6 Nc6+–) 19...Qd6 20.Bb7 f6 (20...f5 21.e4 Nc8 22.Nc3+–) 21.Nc3 Qd3 22.Qa8 Qd6 23.Rd1 Qc7 24.Na4 (better is 24.b6!? Qd8+–) 24...Bc8 25.Bc8 Nc8 26.Qd5 Ne7 27.Qe4 Nd7 (27...Kf8 28.b6 Qc8 29.b7+–) 28.Qh7 e4 29.Qh8 Nf8 30.Nh4 Qe5 31.Nb6 Qg5 (31...Kf7 32.g3 Qc7 33.Qh5 Kg8 34.Nd5+–) 32.Ra1 Kf7 33.Ra7 f5 34.Nd5 Nfg6 35.Ng6 Qg6 (35...Qh6 36.Ne5 Ke6 37.Re7 Kd6 38.Qh6) 36.Re7 1–0. cmulligan (2160) – tundeski (2065), net–chess.com, 2011.

5.b5 Nd7 6.e3 (6.c3 e5 7.d3 a6 8.Nbd2 ab5 9.Qb3 Qa5 10.e3) 6...Nb6 7.ed4 Na4 8.Bc1 cd4 9.c3 Qa5 10.Ne5.

5.b5 Nf6 6.c3 (6.e3 de3 7.fe3 Bd6 8.Bd3 Nbd7 9.0–0 0–0 10.Nc3) 6...Nbd7 7.cd4 cd4 8.Bd4 Bd6 9.Nc3 e5 10.Be3.

5.c3 A) 5...cb4 6.cb4 (6.ab4 Nf6 7.Nd4 e5 8.Nf3 e4 9.Ne5 Nc6 10.Nc6) 6...Nf6 7.Nd4 Be7 8.d3 0–0 9.Nd2 Bd7 10.Nc4; B) 5...dc3 6.Nc3 (6.dc3 Qd1 7.Kd1 Nf6 8.Nbd2 a5 9.b5 Nbd7 10.e3) 6...cb4 7.ab4 Nf6 8.b5 Nbd7 9.d4 Bb4 10.Qb3; C) 5...Nf6 6.bc5 (6.cd4 cb4 7.ab4 Bb4 8.Nc3 Nc6 9.e3 0–0 10.Qb3) 6...d3 7.ed3 Bc5 8.d4 Be7 9.Bd3 Nc6 10.0–0.

5.bc5 Bc5 6.e3 (6.d3 Nc6 7.Nbd2 Nf6 8.Nb3 Bb6 9.a4 e5 10.Ba3) 6...de3 (6...Nf6 7.Bd4 (7.ed4 Be7 8.Nc3 Nc6 9.Bd3 Nd4 10.0–0) 7...Bd4 8.Nd4+= 0–0 9.Nc3 e5 10.Nf3; 6...Nc6 7.Bb5 Nge7 8.ed4 Bb6 9.Nc3 0–0 10.0–0) 7.Bb5 (7.Bg7 ef2 8.Ke2 e5+– (8...Nf6 9.Bh8 Nc6 10.d4) 9.Bh8 Nc6 10.Nc3) 7...Bd7? (better is 7...Kf8!? 8.fe3 (8.de3 Qd1 9.Kd1 Bd7 10.Bc4) 8...Nf6+/– (8...Qb6 9.Nc3 Nf6 10.Bd3) 9.0–0 Nc6 10.Nc3) 8.Bd7+– Qd7 (better is 8...Kf8 9.Bb5 ef2 10.Kf1 a6+–) 9.Bg7 ef2 10.Kf1 Qb5 (10...Nc6 11.Bh8 Nh6 12.Nc3+–) 11.Qe2 Qe2 12.Ke2 Nc6 (12...Nd7 13.Bh8 f6 14.g4+–) 13.Bh8 f6 (13...Nh6 14.Nc3+–) 14.Nc3 Nd4 (14...Kf7 15.Ne4 Be7 16.g4+– (worse is 16.Kf2 Nh6+–)) 15.Nd4 Bd4 16.Rab1 b6 (16...Bc3 17.dc3 b6 18.Rhf1+–) 17.Ne4 (17.Nb5!? Rd8 18.Nd4 Rd4+–) 17...Kf7 18.Rb4 (worse is 18.Nf2 Ne7 19.c3 Bf2 20.Bf6 Kf6+–) 18...e5 (18...Be5 19.d4 Bf4 20.Rb3+–) 19.Rc4 Ne7 (19...Ke6 20.Rc7 h5 21.Rf1+–) 20.Bf6 Re8 (20...Nd5 21.Rc6+–) 21.Be7 Re7 (21...Ke7 22.Rc7 Ke6 23.c3+–) 22.c3 Bc5 (22...b5 23.Rb4 Bb6 24.Rb5+–) 23.Nc5 bc5 24.Rc5 Ke6 (24...Kg6 25.Kf2 Re6 26.Rb1+–) 25.Rf1 Kd6 26.Ra5 e4 (26...Kc6 27.Rf2 Kb6 28.Rd5+–) 27.Rf2 Ke6 28.Ra6 Ke5 29.g4 Kd5 30.d3 ed3 31.Kd3 Ke5 32.Rf5 1–0. Woelfelschneider,Peter (2325) – Tortoza,Carlos (1745), CiF, 2010.

5.bc5 Nc6 6.c3 (6.e3 Bc5 7.ed4 Bd4 8.Nd4 Nd4 9.Bb5 Kf8 10.Bd4) 6...e5 7.Qa4 Bc5 8.Ne5 Nge7 9.Qc4 Qd5 10.Qd5.

4.b5 Bc5

5.Nd4?? Bd4–+ 6.Bd4 Qd4 7.Nc3 (7.c3 Qb6 8.e3 Nf6–+) 7...a6 (7...Nf6 8.e3 Qd6 9.Bc4–+) 8.e3 Qh4 9.ba6 (better 9.Rb1–+) 9...Ra6?? (better 9...Na6 10.Rb1 Nf6–+) 10.g3 (10.Ba6 Na6 11.Qf3 e5=+) 10...Qd8 11.Ba6 ba6 (11...Na6 12.Qg4 Qf6 13.Rb1=+) 12.0–0 (12.Rb1 Nd7=) 12...a5 (12...Nf6 13.Rb1 Nc6 14.Qe2=+) 13.Rb1 (13.Qg4 Kf8= (13...Qd2?? 14.Qg7 Qc2 15.e4+–)) 13...Nc6 14.Qg4 Kf8 (14...g6 15.Qf3 Nge7 16.d4=) 15.Qc4 (15.Qf3 Nge7 16.d3 Nd5=) 15...Nb4 (15...Nge7 16.d4=) 16.Qc5 (16.a3 Na6+= (16...Nc2? 17.Nb5+–)) 16...Ke8 (16...Ne7!?=) 17.Qa5 Nd5 (17...Nc6 18.Qb5 Nge7 19.d4+–) 18.Ne4 (18.Rb8+–) 18...e5 (better 18...Bd7!?+–) 19.c4 Ndf6 (19...f5 20.Qb5 (20.Qd5?! Qd5 21.cd5 fe4+–) 20...Ke7 21.Ng5+– (21.cd5?! fe4 22.Qb4 Qd6+–; 21.Qd5?! Qd5 22.cd5 fe4+=)) 20.Qe5 Ne7 (20...Qe7 21.Qe7 Ke7 22.Rb8 Ne4 23.Rc8+–) 21.Nf6 gf6 22.Qf6 Rg8 23.d4 h5 (23...Bf5 24.Rb7 Qc8 25.Rb5+–) 24.Rb8 c6 (24...Qd6 25.Qd6 cd6 26.Rfb1+–) 25.Rfb1 (25.Qe5 h4+–) 25...Rg6 (25...Qc7 26.Qh6+–) 26.Qh8 Rg8 27.Qh5 (better 27.Qe5 f6 28.Qh5 Kd7+–) 27...c5 (27...Qc7 28.a4+–) 28.Qc5 Rg3 (28...Rg6+–) 29.hg3 Kf8 30.R1b7! Qa5 (30...Bb7 31.Rd8 Mate attack) 1–0. DEFFM – GuestCQWQ, freechess.org, 2018.

5.e3 de3 6.Bg7 ef2 7.Ke2 Qd5? 8.d4 Bb6 (8...Qe4 9.Kf2 Nh6 10.Bh6 Bd6+–) 9.Kf2 f6 (9...Nf6 10.Bh8 (worse 10.Bf6 Rg8+–) 10...Nbd7 11.Ke1+–) 10.Bh8 Kf7 (10...e5 11.Nc3 Qe6 12.Na4+–) 11.Qd3 (11.c4 Qd7 12.Qd3 Ke8+–) 11...e5 12.Qh7 Kf8 (12...Ke8 13.Qh5 Kd8 14.Qh4+–) 13.Kg3 (13.Nbd2 Bd4 14.Ke1 Qd7+–) 13...ed4 (13...Bd4 14.Nbd2 Ne7 15.Bg7 Ke8 16.Ne4 Nf5 17.Qf5 Bf5 18.Nf6 Kd8 19.Nd5 Ba1 20.Bf6 Kd7 21.Bc4+–) 14.Qg7 (14.Bd3 Qd6 15.Kf2 Qe7+–) 14...Ke8 15.Bc4! Qd6 (15...Qc4 16.Re1 Double attack) 16.Kh4 Qf4 (16...Ne7 17.Qf7 Kd8 18.Qf6+– (18.Bf6?? Qf4 19.Kh5 Bg4 20.Kh4 Bf3 21.Kh3 Qg4)) 17.g4 Qh6 18.Kg3 Qg7 19.Bg7 Ne7 20.Bf6 Kf8 (20...c5 21.Re1 Bd8 22.Nh4+–) 21.Re1 Ng6 (21...Ng8 22.Bd4 Bd4 23.Nd4 Ne7+–) 22.Ng5 c6 (22...Ne5 23.Nh7 Ke8 24.Re5 Be6 25.Re6 Kf7 26.Re7 Kg6 27.Bd3 Kh6 28.Bg7) 23.Nh7 1–0. onur604 (2320) – ms_blooming (1950), lichess.org, 2020.

5.e3 de3 6.Bg7 ef2 7.Ke2 Qd7?? 8.d4 (worse 8.Bh8 Qb5 9.d3 Nc6+–) 8...Qb5 9.Kf2 Qb2 10.Nbd2 (10.Bh8?! Qa1 11.Bc4 Nd7+=; 10.dc5 Qg7 11.Na3 Nf6–+) 10...Bd4 (10...Nh6 11.Bh8 Ng4 12.Kg1 Ne3+–) 11.Bd4 (11.Bd4 Qb4 12.Bh8+–) 1–0. DEFFM – egoy, freechess.org, 2019.

5.e3 de3 6.Bg7 ef2 7.Ke2 e5 8.Bh8 e4+–.

5.e3 e5 6.Bc4 Qe7 7.0–0 Nf6 (better 7...de3!? 8.fe3 Bd6+–) 8.ed4+– Bd4 (8...ed4 9.Re1 Be6+–) 9.Bd4 ed4 10.Re1 (10.Nd4?! 0–0 11.c3 Re8+–) 10...Be6 11.Nd4 0–0 (11...Kd8 12.Qf3 Kc8+–) 12.Ne6 (12.Be6?! fe6 13.Ne6 Re8+–) 12...Re8 13.Nc3 fe6 14.Re6 (worse 14.Be6 Kf8 15.Bc8 Qe1 16.Qe1 Re1 17.Re1 a6 18.Bb7 Ra7 19.ba6 Na6+–) 14...Qe6 15.Qe2 (worse 15.Be6 Re6 16.Qf1 Nbd7+–) 15...Kf7 (15...Qc4 16.Qc4 Kh8+–) 16.Re1 1–0. Pierre – GuestG74, internet, 2020.

5.e3 Nf6 6.ed4 Bb6 7.a4+– a6 8.a5 Ba7 9.c4 Bd7 (9...0–0!?+–) 10.Nc3 ab5 (10...Bc8 11.Bd3 Bd4 12.Nd4 Qd4 13.Qc2+–) 11.cb5 Nd5 (11...Bc8 12.Ra4+–) 12.Nd5 ed5 13.Qb3 Be6 (13...Qe7 14.Be2 0–0 15.b6 Bb6 16.ab6 Ra1 17.Ba1+–) 14.b6! cb6 (14...Bb6 15.ab6 Ra1 16.Ba1 cb6 17.Bd3+–) 15.ab6 Bb6 (15...Nc6 16.ba7 0–0 17.Bd3+–) 16.Ra8 1–0. GuestRLPC – chopinscherzo, freechess.org, 2019.

4.b5 Qd5

5.Bd4 Nd7 (5...Qb5!? 6.e4 Qd7+=) 6.Nc3+– Qf5 (6...Qd6 7.e4+–) 7.e4 Qg4 (7...Qg6 8.e5+–) 8.Be2 (8.e5 Qg6+–) 8...f5 (8...Ngf6!?+–) 9.0–0 (9.Ne5 Qg2 10.Bf3 Qh3 11.Bh5 Ke7+–) 9...fe4 (9...Ngf6 10.ef5 ef5 11.Re1+–) 10.Ne5 Qf4 (10...Qh4 11.g3 Qh6 12.Bh5 g6 13.Nd7 Bg7 14.Bg7 Qg7+–) 11.Bh5 g6 12.Ng6 hg6 13.Bg6 (13.Bh8?! gh5 14.Qh5 Kd8+–) 13...Kd8 14.Bh8 Ngf6 15.Qe2 Ng4 16.g3 Nc5 (16...Qg5 17.Qe4 Nde5 18.Be5 Ne5+–) 17.gf4 1–0. GuestYKFM – GuestWBWS, freechess.org, 2020.

5.Nd4+– Bc5 (5...Qh5 6.Nc3+–) 6.Nb3 Bb6?? (better 6...Nf6+–) 7.Bg7 Nf6 (7...Qb5 8.Nc3 Qh5 9.Bh8+–) 8.Bh8 Bd7 (8...Nbd7 9.e3+–) 9.Bf6 Qf5 10.Bh4 Bb5 11.a4 Bc4 12.a5 Bb3 13.ab6 Bc2 14.Qc1 cb6 15.Ra2 Bb1 16.Qc8 1–0. DEFFM – GuestCJKS, freechess.org, 2019.

4.Bd4 Bb4??

5.Bg7+– Qd5 6.Bh8 f6 7.e3 Nc6 8.Nd4! Nd4 9.ed4 (9.c3 Nc6 10.cb4 Nb4+–) 9...Qd4 10.Qh5 (10.Qh5 Kf8 11.c3 Qe4 12.Kd1+–) 1–0. GuestMVZK – GuestSTRJ, freechess.org, 2018.

5.Bg7+– Bd6 6.Bh8 f6 7.e3 Qe7 8.Nd4 c5 9.Qh5 (9.Nb5 Be5 10.d4 cd4 11.ed4 Bc7+–) 9...Kd7 10.Bb5 (10.Nb5 Be5 11.d4 cd4 12.ed4 Bc7 13.Nc7 Kc7+–) 10...Kc7 11.Nf3 a6 12.Bd3 Nc6 (12...f5 13.e4 Nf6 14.Bf6 Qf6 15.Qh7 Kd8 16.Nc3+–) 13.Qh7 Qh7 14.Bh7 Nb4 (14...Bd7 15.Nc3+–) 15.Na3 (15.a3 Nc6+–) 15...e5 16.Bg8 (16.Bg8 Bg4 17.Bf6 Bf3 18.gf3 Rg8 19.h4+–) 1–0. mikebaldini (1655) – wildworld, gameknot.com, 2015.

5.Bg7+– f6 6.Bh8 Nc6 7.e3 Nh6 8.Nh4 Ne5 9.Qh5 Nef7 10.Bg7 Nf5 11.Nf5 ef5 12.Bc4 Qe7 13.Qh7 (13...Nd6 14.Qg6 Kd7 15.Bf6+–) 1–0. Sundin,Tommy – Oeberg, Iggesund, 1988.

5.Bg7+– f6 6.Bh8 Qe7 7.a3 Bd6 8.e3 Nc6 9.Bb5 Bd7 10.0–0 0–0–0 11.Re1 Nh6 12.Bf6! Qf6 13.Nc3 Rg8 14.Ne4 Qf5 15.Bd3 Qg4 16.Nd6 cd6 17.Bf1 Kb8 18.d4 Ne7 19.Rb1 Bc6 20.e4! Ka8? 21.Nd2 Qg5 22.Re3 Ng6 23.Rg3 Qh4 24.Nc4 Rd8 25.d5 Bd5 26.ed5 ed5 27.Qd5 Rd7 28.Na5 Qe7 29.Ba6 (29...Rc7 30.Bb7 Rb7 31.Nb7 Qf7 32.Qd6 Qf8 33.Rg6 Qe8 34.Na5 Qe1 35.Re1 Nf7 36.Re8 Nd8 37.Rd8) 1–0. wlittle (2185) – wmalone (2040), net–chess.com, 2004.

5.Bg7+– f6 6.Bh8 Qe7 7.c3 Bd6 8.e3 (8.e4 e5+–) 8...h6 (8...Nh6 9.Nd4 Qf8 10.Qh5 Ke7 11.Qh4+–) 9.Nd4 (better 9.Qc2 Qf7 10.c4 Na6+–) 9...Qh7 10.Qh5 (10.Bc4 Qh8 11.Ne6 Nc6+–) 10...Ke7 11.Bf6! Nf6 (11...Kf6 12.Bc4 Combination; 11...Nf6 12.Qh3 Combination) 12.Qh4 Nbd7 13.Bc4 (13.f4 Qg6+–) 13...Ne5 14.Be2 Ng6 15.Bd3?? (15.Qh3 e5 16.Nf5 Kd8+–) 15...Qg7?? (better 15...Nh4 16.Bh7 Nh7=) 16.Qh3+– e5 (16...Bd7 17.Bb5 c6 18.Bc4+–) 17.Nf5 Bf5 18.Bf5 (18.Qf5?! Nh4 19.Qh3 Qg2 20.Qg2 Ng2 21.Ke2 Nh4+–) 18...Nf8 (18...e4 19.f3 Nh4 20.fe4 (20.Be4?! Ng2 21.Ke2 Ne4 22.fe4 Qg6+–) 20...Qg2 21.Qg2 (21.Qh4 Qh1 22.Ke2 Rg8 23.Qh6 Qc1–+) 21...Ng2 22.Ke2+–) 19.0–0 Re8 20.e4 (20.d3 N8h7 21.Qf3 e4 22.de4 Ng5+–) 20...Kd8 (20...Ng6 21.d4 Nf4 22.Qf3+–) 21.c4 (21.Qe3 Ng6+–) 21...c6 (21...Ng6 22.Bg6 Qg6 23.Nc3+–) 22.Nc3 (22.Qe3 b6+–) 22...Kc7 (22...Ng6 23.Kh1+–) 23.Rab1 Kb8 (23...Ng6 24.Ne2+–) 24.a4 (24.Qd3 Bc5+–) 24...a6 (24...Rd8 25.Ne2+–) 25.Rb6 (better 25.Rb3 N8d7+–) 25...Ka7 (25...N8d7 26.Rb2 Nc5+–) 26.Rfb1 Rb8 (26...Bc5 27.Rb7 Qb7 28.Rb7 Kb7 29.Qh6+–) 27.Qe3 (better 27.Bc8 h5+–) 27...Ka8 28.Rb7! Rb7 (28...Rb7 29.Rb6 Double attack (29.Rb6 Decoy); 28...Qb7 29.Rb7 Combination) 29.Rb7 (29.Rb6!? Rb6 30.Qb6+–) 29...Qb7 (29...Kb7 30.Ne2=) 30.h3 (30.Qh6 Qf7+=) 30...N8d7 (30...h5 31.d4=) 31.a5 (31.Qh6 Be7+–) 31...Bc5 (31...Bf8!?=) 32.Qh6+= Ka7 (better 32...Bb4+=) 33.Na4?? (33.g4 Qb2 34.Na4 Qa1 35.Kg2 Bf8 36.Qe3 Kb7+–) 33...Bd4 (better 33...Qb1 34.Kh2 Bf2 35.Qe3 Be3 36.de3 Qb3 37.Bd7 Nd7–+) 34.c5?? (34.Nb6!? Bb6 35.ab6 Kb6 36.d4+–) 34...Qb5 (34...Qb1 35.Kh2 Bf2 36.h4 Qg1 37.Kh3 Qh1) 35.Nb6?? (better 35.Nc3 Qc5 36.Bd7 Nd7 37.Qh7=+) 35...Qb1 36.Kh2 Bf2 37.Bd7 (37.Nc8 Kb8 38.h4 Qg1 39.Kh3 Qh1) 37…Qg1 0–1. GuestZSWT – PETECVET, freechess.org, 2016.

5.Bg7+– Nf6 6.Bh8 Ng4 7.h3 (7.e4 Nc6+–) 7...Nh6 (7...Nf6 8.a3 Bd6 9.Nc3+–) 8.Bb2 (8.e4 Bd7+–) 8...Nc6 9.e3 f6 (9...a6 10.Bd3 f5 11.e4+–) 10.Bd3 (10.Nd4 Nd4 11.Qh5 Kd7 12.Bd4 Qf8+–) 10...Qe7 (10...f5 11.e4+–) 11.Nd4 Ne5 12.Qh5 Nef7 13.Bh7 Bd7 14.0–0 (14.a3!? Bd6+–) 14...0–0–0 15.Nc3 (15.a3 Bd6+–) 15...Rh8 16.Bd3 Nf5 (16...e5 17.Nd5 Qd6 18.Nb4 Qb4 19.Nb3+–) 17.Nf5 (17.Bf5?! Rh5 18.Bg4 Rh4=) 17...ef5 (17...Rh5?? 18.Ne7 Be7 19.Bg6+–) 18.Qe2 Ng5 19.f4 (better 19.Nd5 Qg7 20.Kh2 Qh6+–) 19...Nh3 (19...Bc3 20.Bc3 Ne4 21.Rab1+–) 20.gh3 Rh3 21.Kf2 (better 21.Qg2 Qh7 22.Ba6+–) 21...Rh2 22.Ke1 Re2 23.Ke2 (23.Ne2?! Qe3 24.Rd1 Qe6+–) 23...Qg7 24.Rg1 Qh6 (24...Qf7 25.a3 Bf8 26.Ke1+–) 25.Rh1 (25.Rg8!? Bf8 26.Rh1 Qh1 27.Rf8 Be8 28.Re8 Kd7+–) 25...Qg6 (25...Qf8 26.Nd5 Qg8 27.Rag1 (27.Nb4?! Qg2 28.Ke1 Qg3 29.Kf1 Qf3 30.Kg1 Qg3 31.Kf1 Qf3 32.Ke1 Qg3 33.Kd1 Qf3 34.Ke1 Qg3=) 27...Qd5 28.Rh8 Be8 29.Re8 Kd7 30.Ra8+–) 26.Rag1 Qf7 (26...Qe8 27.Nd5 Be6 28.Nb4+–) 27.a3 (better 27.Rh8 Be8 28.Bf5 Kd8+–) 27...Bd6 (27...Bf8 28.Rh8 Be6+–) 28.Rh8 Bf8 (28...Be8 29.Bf5 Kd8+–) 29.Rgg8 c6 30.Rf8 Qf8 31.Rf8 Kc7 32.Rf6 b5 33.Bf5 Bf5 34.Rf5 a5 35.Re5 Kd6 36.d4 b4 37.ab4 ab4 38.Ne4 Kc7 39.f5 Kb6 40.f6 c5 (40...Kc7 41.f7 Kb7 42.Re7 Ka6 43.Nc5 Kb6 44.Rb7 Ka5 45.f8Q b3 46.Qd8) 41.Nc5 b3 (41...Kb5 42.Ne6 Kc6 43.f7 Kb7 44.f8Q Kc6 45.Qc8 Kb6 46.Qc7 Ka6 47.Ra5) 42.cb3 (42.c4 Kc7 43.Re7 Kb6 44.Rb7 Kc6 45.f7 Kd6 46.f8Q Kc6 47.Qf6) 42...Kb5 43.Nd3 (43.Nd3 Kc6 44.Re6 Kb7 45.f7 Kc7 46.d5 Kd7 47.Nc5 Kd8 48.f8Q Kc7 49.Rc6; 43.f7 Ka5 44.f8Q Kb6 45.Qd6 Ka7 46.Re7 Ka8 47.Qd8) 1–0. AhmedSultanov – Oleg_79, lichess.org, 2019.

5.Bg7+– Nh6 6.Bh8 f6 7.c3 Bf8 8.Qc2 Qd7 (8...e5 9.d4 ed4 10.Nd4+–) 9.Bf6 (9...Qf7 10.Bg5+–) 1–0. market (1910) – Knightseyes (1635), GameColony.com, 2002.

4.Bd4 Nc6

5.Bb2 Bb4?? 6.Bg7+– Nf6 7.Bh8 Bd6 8.a3 Ne5 9.d3 (9.e3!? Ng6 10.Bg7 Nh5+–) 9...Nf3 10.ef3 Be5 11.c3 c5 12.g3 b6 (12...Qd5 13.Rg1 Ng4 14.Be5 Nh2 15.Be2 Qe5 16.Qa4 Kf8 17.Qf4 Qf4 18.gf4+–) 13.Bg2 (13.f4!? Bd6+–) 13...Bb7 14.Ra2 (14.0–0 Qd5+–) 14...Bd5 (14...Nd7 15.Be5 Ne5 16.d4+–) 15.c4 (15.Re2!? Bd6+–) 15...Bc6 16.0–0 Ke7 17.Nd2 Qh8 18.Re1 Nd7 19.Ne4 Qg7 20.f4 Nf6 21.fe5 Ne4 22.Be4 Be4 23.Re4 Rd8 24.Rd2 f5 25.Re3 f4 26.Rf3 Rf8 27.d4 a5 28.dc5 bc5 29.Rd7 Ke8 30.Rg7 h5 31.Qd7 1–0. the_root – raven_king, gameknot.com, 2013.

5.Bb2 Nge7 6.b5+– Nb8 7.e3 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.c4 (11.Nc3 Nd5+–) 11...Qa5 (11...Ng6 12.bc6 Nc6 13.d4+–) 12.Bc3+– Qc7?? (better 12...Qd8+–) 13.Be5 (13.Be5 Qd8 14.Bb8 cb5 15.cb5+–) 1–0. DEFFM – GuestVYBP, freechess.org, 2018.

5.c3 b5 6.e4 Nf6? (better is 6...Nd4!? 7.Nd4 a6+/–) 7.Bb5+– Bd7 8.Bd3 (8.Bc6!? Bc6 9.d3 a5+–) 8...a5 9.ba5 Na5 10.0–0 c5 11.Be3 c4 12.Bc2 Qc7 13.Bd4 Be7 14.d3 cd3 15.Qd3 Qb7 16.Re1 Bc6 17.Nbd2 0–0?? (17...Qc7+–) 18.e5 Ne4 19.Ne4 Be4 20.Re4 g6 21.Rg4 Rad8 22.h4 Kh8 23.Ng5 Bg5 24.Rg5 Rg8 25.h5 Rdf8 26.Rb1 Qe7 27.Rg3 Qh4 (27...Nc6 28.Qf3 Rc8 29.Bc5 Qc5 30.Qf6 Rg7 31.h6 Qe5 32.hg7 Kg8 33.Qe5 Ne5 34.a4+–) 28.hg6 fg6 29.Qa6 Qd8 30.Qe6 Qe8 (30...Rg7+–) 31.Qe8 Re8 32.e6 Rg7 33.Re1 (better is 33.Ba4 Rc8+–) 33...Kg8 34.Bg7 Kg7 35.Rf3 (better is 35.e7 Nc6 36.Rge3 h5+–) 35...Nc6 (35...Re7 36.a4+–) 36.Ba4 Rc8 37.Bc6 Rc6 38.e7 (38...Rc8 39.e8Q Re8 40.Re8+–) 1–0. Zembla – real1, HCL–C1802 playchess.de, 2003.

5.c3 Nd4 6.cd4 Bb4 7.Qa4 Bd7 8.Qb4 Ne7 9.Nc3 Bc6 10.e4 0–0 11.Bc4 a6 12.0–0 b5 13.Bd3 Bb7 14.Ne2 Nc6 15.Qb3 Na5 (15...Qd6 16.Rac1+–) 16.Qc3 Nc6 17.Rac1 b4 (17...f6 18.Qb3 Qd6 19.Rc5+–) 18.Qb2 a5 19.Rc5 White prepares the advance e5 19...a4 (19...Nb8 20.Rfc1 c6 21.Nf4+–) 20.Rfc1 a3 (20...Qe7 21.Rc6 Bc6 22.Rc6+–) 21.Qb1 Qd6 (21...Rb8 22.Rc6 Bc6 23.Rc6+–) 22.e5 Qd7 23.Bb5 Ra5 (23...b3 24.Ng5 g6 25.Ne4+–) 24.Bc6 Bc6 25.Ng5 h6 26.Qh7 1–0. Janek – tscjs, internet, 2018.

5.c3 Nd4 6.cd4 Bd7 7.Nc3 +=.

5.c3 Nd4 6.cd4 Nf6 7.Nc3 +=.

5.c3 Nd4 6.Nd4 e5 =.

5.c3 f6 6.b5 Nd4 7.Nd4 e5 8.Nf3 Bg4 9.e4 Qd7 (9...Bc5 10.h3 Bh5 11.Bc4+=) 10.Bc4+/– Nh6 11.0–0 Be6 (11...Nf7 12.h3 Nd6 13.Bb3+=) 12.Qb3 (12.Be6 Qe6 13.d4 ed4 14.cd4 Bd6+/–) 12...Bc4 (12...Bg4 13.Ne1+=) 13.Qc4 Nf7 14.d4 Bd6 (14...Nd6 15.Qe2+/–) 15.a4 b6 (15...f5 16.de5 Ne5 17.Ne5 Be5 18.f4+–) 16.Nbd2 0–0 17.d5 (17.Rfd1 Rac8+–) 17...Bc5 18.Nb3 Bd6 19.a5 Rac8 (19...Rfd8 20.Qd3+–) 20.Qc6 Qg4 21.a6 (better is 21.Nfd2!?+–) 21...Qe4+= 22.Rfe1 Qf4 23.Nbd2 Ng5 (23...f5 24.Nf1+=) 24.Ng5+/– Qg5 25.Ne4 Qg6 26.Qc4 (26.Rad1 Rfd8+/–) 26...f5+= 27.Nd6 (27.Ng3!?+=) 27...cd6+= 28.Qd3 Rf6 (28...f4 29.Qg6 hg6 30.Rec1+=) 29.Ra4 f4 30.Qg6 Rg6 31.Rc1 f3 32.g3 Re8 33.Re4 Rf8 34.c4 Rf4? 35.Rce1 h5?? 36.Rf4+– ef4 37.Re7 fg3 38.fg3 h4 39.Kf2 hg3 40.hg3 Rf6 41.Ra7 Rf8 42.Rb7 Ra8 43.Rb6 Rc8 44.a7 Kh7 45.Rb8 Rc4 46.a8Q Rc2 47.Kf3 Rc3 48.Kg2 Rc2 49.Kh3 Rc5 50.Rh8 Kg6 51.Qe8 Kf5 52.Rh5 g5 53.Qe6 1–0. Trkn – webguy4, itsyourturn.com, 2000.

5.c3 Nf6 6.Bf6+/– Qf6 7.d4 Be7 (7...a6 8.e3+/–) 8.e3 (8.e4 Bd7+/–) 8...0–0 (8...Bd7 9.Bd3+/–) 9.Bd3 h6 (9...Qh6 10.0–0+/–) 10.Nbd2 a6 11.0–0 e5 12.d5 Nd8 (12...Nb8 13.Ne4 Qf5 14.Qb3+–) 13.Ne4 Qb6 (13...Qf5 14.Qb3 c6 15.c4 cd5 16.cd5+–) 14.Qb3 (better is 14.Ne5 f5 15.Qb3+–) 14...f6? (better is 14...Bd6+–) 15.d6 Be6 16.Bc4 (16.de7?! Bb3 17.ef8R Kf8 18.ab3 Ne6+–) 16...Bc4 17.Qc4 Kh8 (17...Rf7 18.de7 Ne6+–) 18.de7 Rg8 (18...Re8 19.ed8N Rad8 20.Rfd1+–) 19.Qg8! Kg8 20.e8Q (20.ed8R?! Rd8 21.Nc5 a5+–; 20.ed8Q?! Rd8 21.Nc5 a5+–; 20.ed8N?! Rd8 21.Nc5 a5+–; 20.ed8B?! Rd8 21.Nc5 a5+–) 20...Kh7 21.Rfd1 (21.Rfd1 f5 22.Nc5+–) 1–0. market – mateen_smart, gamecolony.com, 2007.

5.c3 Nf6 6.Bf6+/– Qf6 7.d4 Bd6 8.e4 e5 9.d5 (9.Bb5 Bd7 10.d5 Nb8 11.Bd7 Nd7+/–) 9...Nb8 (9...Ne7 10.Nbd2+=) 10.Nbd2+/– 0–0 11.Be2 a5 12.a3 Bg4 13.h3 Bh5 14.g4 (14.Nc4 Bg6 15.Bd3 ab4 16.ab4 Nd7+/–) 14...Bg6+= 15.h4 h6 (15...Qf4!? 16.Qb1 h6+/–) 16.g5+/– hg5 17.hg5 Qd8 18.c4 (18.Rh4 ab4 19.ab4 Ra1 20.Qa1 c6+–) 18...ab4 (18...b6 19.b5+/–) 19.ab4+– Ra1 20.Qa1 Bb4 21.Qe5 Bd6 22.Qb2 b6 (22...Re8 23.c5 Bf4 24.Qb7 Nd7+/–) 23.Rh4 (better is 23.e5!? Bc5 24.Qc3+–) 23...Re8+/– 24.Bd1 Be7 25.Qb5 Rf8 26.Qb2 (26.Qb3 Re8+/–) 26...Bg5 (better is 26...Re8!?=) 27.Ng5+/– Qg5 28.Nf3 Qe7 29.Qe5 Re8 30.Qe7 Re7 31.Ng5 Nd7+= 32.f3 Nc5 33.Kf2 f6= 34.Nh3 f5 35.Nf4 Bh7 36.Nd3?? fe4 37.Nc5+= ef3?? 38.Kf3?? bc5+= 39.Kf4 Re4 40.Kg3 Rh4 41.Kh4 Bd3 42.Bb3 Kf7 43.Kg5 g6 44.Kf4 Kf6 45.Ke3 Bf1 46.Kf2 Bh3 47.Ba4 Ke5 48.Ke3 Bf5 49.Bc6 g5 50.Ba8 g4 51.Bb7 g3 52.Kf3 Kd4 53.Kg3 Bd3 54.Ba6 Bc4 55.Bc4 Kc4 0–1. mtrold1 – sisil, internet, 2001.

5.Bc3 Nb4 6.a3 Nc6 7.e3 Nge7 8.Be2 Nd5 9.Bb2 Bd7 (9...Bd6 10.c4 Nf6 11.d4+=) 10.c4 Nde7 (10...Nf6 11.0–0+=) 11.0–0 Ng6 12.Ne1 (12.d4 Bd6+=) 12...f6 (12...e5 13.d4=) 13.f4 Be7 14.Bh5 Na5 15.Qe2 Bc6 16.Nc3 Qd7 17.Rb1 Kf7 (17...Rd8 18.d4 0–0 19.Nf3+=) 18.Bg6 (18.d4 f5+–) 18...hg6+= 19.f5 (19.d4 Rh5+=) 19...Rh6 (19...gf5!? 20.d4 Ke8–/+) 20.fe6 (20.fg6 Kg6 21.d4 Kf7=) 20...Qe6 (worse 20...Ke6 21.Nf3 Bf3 22.Rf3+=) 21.Nd1 (21.d3!?=) 21...Rah8–/+ 22.h3 Qe4 (22...Nc4 23.Nf3 Bf3 24.Rf3–/+) 23.Nc3 (better 23.d3!? Qh4 24.Be5+=) 23...Qc4–/+ 24.d3 Qe6 25.e4? (better 25.Nf3 Ke8 26.Nd4=+) 25...Bc5–+ 26.Kh1?? (26.Rf2 Nb3 27.Rd1–+) 26...Bd4 (26...Rh3 27.gh3 Qh3 28.Qh2 Qh2) 27.Nf3–/+ Bc3?? (better 27...Rh3 28.gh3 Rh3 29.Nh2 Bc3 30.Bc3 Rd3 31.Qd3 Be4 32.Qf3 Bf3 33.Rf3 Nb3–+) 28.Ng5+– (28.Bc3?! Rh5+–) 28...Ke7 29.Ne6 (29.Bc3 fg5 30.Bg7 Rh3 31.gh3 Rh3 32.Kg2 Rd3 33.Bf8 Ke8 34.Qd3 Be4 35.Qe4 Qe4 36.Kg1 Nc4–+) 29...Ke6 (29...Bb2 30.d4 Ba3+–) 30.Bc3 b6 (30...Rh5 31.Qg4 Kf7 32.Qg3+–) 31.Qg4 (better 31.Qa2 Ke7 32.Bb4 Kd8 33.Ba5+–) 31...Kd6 (31...Ke7 32.Ba5 Bd7+–) 32.e5 (32.Bb4 Ke5 33.d4 Kd4 34.Rfd1 Ke5 35.Bc3) 32...Ke7 33.ef6 gf6 34.Bf6 (34.Rbe1 Be4 35.Re4 Kf8 36.Rf6 Kg8 37.Re8 Kh7 38.Rf7) 34...Ke8 35.Bh8 (35.Qe6 Kf8 36.Bh8 Bf3 37.Rf3) 35...Rh8 (35...Bg2 36.Kg2 b5 37.Qe6 Kd8 38.Bf6) 36.Qg6 (36.Qc8 Ke7 37.Qc7 Ke6 38.Rbe1 Be4 39.Re4 Kd5 40.Qd7 Kc5 41.Re5) 36...Kd8+– 37.Qf6 Kc8 38.Qh8 Kb7 39.Rf7 Bg2 40.Kg2 Nc6 (40...Nc4 41.Qd8 Ne3 42.Kf3 Nd5 43.Qd5 Ka6 44.Rc7 b5 45.Qb5) 41.Rc1 (41.Rc1 Ka6 42.Qc8 Ka5 43.Rf5 Ne5 44.Re5 b5 45.Qd7 a6 46.Rc4 c5 47.Qd8; 41.Qh7 Nd8 42.Rc7 Kb8 43.Qd7 a6 44.Qd8) 1–0. Akrapovik (1630) – kecup (1660), lichess.org, 2019.

5.Bc5 Nb4 6.Bf8 Kf8 7.c3 +=.

5.Bc5 Bc5 6.bc5 e5 =.

5.Bb2 Nb4

6.a3 Nc6 7.e3 Nf6 8.Be2 Bd6 9.c4 (9.d4 b6=) 9...b6 (9...0–0 10.d4=) 10.0–0 Bb7 (10...0–0 11.d4=) 11.d3 (11.d4 0–0=) 11...Qe7 (11...0–0 12.Nc3=) 12.Nbd2 (12.e4 e5=) 12...a5 (12...0–0 13.d4=) 13.e4 (13.d4 0–0+=) 13...e5= 14.Qa4 (14.Nh4 Bc8=) 14...0–0–0 (14...0–0!?=+) 15.Nb3+= h6 16.Nh4 (better 16.Rfc1 Nd7 17.Rab1+=) 16...Ne4? (better 16...Qe8 17.Kh1 Ne7 18.Qe8 Rhe8+=) 17.Nf5+– Nc5?? (better 17...Qe8 18.Bg4 Kb8 19.de4 Nd4 20.Qe8 Rhe8 21.Nbd4 ed4+–) 18.Ne7 Ne7 (18...Be7 19.Nc5 Bc5 20.Bg4 Kb8 21.Bf3+–) 19.Nc5 Bc5 20.Be5 f6 (20...Nc6 21.Bg7 Rhg8 22.Bf3 (22.Bh6?! Nd4 23.Rfb1 Bg2=+) 22...Rg7 23.Bc6 Rd3 24.Rfd1 Rd1 25.Rd1+–) 21.Bg3 (21.Bb2 Rhe8+–) 21...Nc6 (21...Rd4 22.Rfe1+–) 22.Bg4 (22.Bf3 Ne5 23.Bb7 Kb7 24.Be5 fe5+–) 22...Kb8 23.Rad1 (23.Bf3!? Nd4 24.Bb7 Ne2 25.Kh1 Kb7+–) 23...Nd4 24.Rfe1 (better 24.Rd2+–) 24...f5?? (better 24...Bc6 25.Qc6 Nc6=+) 25.Bf3! Bf3 (25...Bf3 26.gf3 Combination; 25...Nf3 26.gf3 Combination) 26.gf3 Nf3 27.Kg2 (27.Kf1 Ne1 28.Re1 Rd3+–) 27...Ne1 28.Re1 Rd3 (28...Rhf8 29.Be5 Kb7 30.Rb1 (30.Bg7?! Rg8+–) 30...Rd3 31.Qb5+–) 29.Re8 Re8 (29...Rd8 30.Rh8 Rh8 31.Qd7+–) 30.Qe8 Kb7 31.Qf7 Bd6 32.Qg7 (better 32.Qf5!? Rd4 33.Qf3 Kb8 34.Bd6 Rd6 35.Qf8 Kb7 36.Qg7 Rd3+–) 32...Bg3 (32...f4 33.Bh4+–) 33.hg3 Ra3 34.Qh6 Rd3 (34...Rc3 35.Qe6 Ka7 36.f4+–) 35.Qf4 a4 36.Qf5 Rd6 (36...Rd4 37.Qf3 c6 38.g4+–) 37.Qe4 (better 37.Qf3 Rc6 38.g4+–) 37...Ka6 (37...Rc6 38.c5!+–) 38.c5! bc5 39.Qa4 Kb6 40.Qb3 Kc6 41.Qc4 (41.g4 Rd5+–) 41...Rd4 42.Qb3 (42.Qe6 Kb5+–) 42...c4?? (42...Rd6 43.g4 Rg6 44.Qf3 Kb6+–) 43.Qc3+– Kc5 (43...Kd5 44.f4 c5 45.Qf3 Kd6 46.f5+–) 44.f4 Rd3 (44...Kd5 45.Qf3 Kd6 46.f5 Rd2 47.Kh3+–) 45.Qe5 (45.Qa5 Kc6+–) 45...Kb4 (45...Rd5 46.Qc7 Kd4 47.Qb6 Rc5 48.f5+–) 46.Qc7 (46.f5 Rd7+–) 46...c3 (46...Rd2 47.Kh3 c3 48.f5+–) 47.Qb6 (better 47.f5 Rd2 48.Kf3 Rd3 49.Ke4+–) 47...Ka3 (47...Kc4 48.f5 c2 49.f6+–) 48.Qa5 (better 48.Qa6 Kb2 49.Qd3+–) 48...Kb2 49.Qb5 Kc2 50.f5 Rd2 51.Kh3 (better 51.Kf3 Rd3 52.Ke2 Rd2 53.Ke3 Rg2 54.Qa4 Kb2 55.Qb4 Ka2+–) 51...Kc1 (51...Rf2 52.Qc6+–) 52.f6 (better 52.Qc4 Kb2 53.f6 Kc2+–) 52...c2 53.f7 Rf2 54.Qb3 (better 54.Qd7 Kb1 55.Qb7 Kc1+–) 54...Kd1 (54...Kd2 55.Qb4 Kd3 56.Qd6 Kc4 57.Qc6 Kd3 58.Qd5 Ke2+–) 55.Qd3 Ke1 56.Qe3 Kf1 57.Qc1 Ke2 58.Qc2 Ke3 59.Qf2! (59.Qf2 Ke4 60.f8Q Kd3 61.Q8c5 Ke4 62.Qfe3) 1–0. GuestTTQS – GuestDKTF, freechess.org, 2016.

6.d4 Qd5 7.e3 Qf5 8.Na3 Nc6 9.Bd3?? Qa5–+ 10.Qd2 Bb4 11.c3 Ba3 12.0–0 Bd6 13.e4 Qh5 14.c4 Nb4 15.Bb1 Nh6?? 16.a3? Na6–+ 17.Bc2 0–0 18.e5 Be7 19.Rac1 f6 20.Qd3 f5 21.d5 Nc5 22.Qe3 Ng4 23.Qe2? ed5 24.cd5 b6 25.h3? Nh6 26.Rfd1 Ne4 27.d6 cd6–+ 28.Be4 fe4 29.Qe4 Bf5 30.Qd5 Qf7 31.ed6 Qd5 32.Rd5 Bd8 33.Ne5 Bg5 34.Rc7 Rac8 35.Nc6= Rc7 36.dc7 Re8 37.g4 Re1? 38.Kg2+– Be4 39.f3 Bf3 40.Kf3 Re3 41.Kf2 Rh3 42.c8Q Kf7 43.Ne5 (43...Ke7 44.Rd7 Ke6 45.Qc6) 1–0. touchdown – Barry49434, ChessWorld.net, 2005.

6.e3 h6 7.c4 a6 (7...Nf6 8.d4=) 8.Qb3 Nf6 9.a3 Nc6 10.d4 Be7 11.d5 (11.Bd3 0–0+=) 11...ed5= 12.cd5 Na7 (12...Qd5 13.Qd5 Nd5 14.Bg7=) 13.Be2 (13.Nc3 0–0+=) 13...0–0 (13...Qd5 14.Qd5 Nd5 15.Bg7=) 14.0–0 (14.Nc3 b5+=) 14...Bd6 (14...Qd5!? 15.Qc3 Nc6=+) 15.Nbd2 (15.Nc3 Re8+=) 15...c6 (15...Nd5 16.Rfd1=) 16.e4 (16.Bf6 Qf6 17.Ne4 Qg6 18.Nd6 Qd6+=) 16...Re8 17.Bd3 cd5? (better 17...Bf4+=) 18.e5+– (18.ed5?! Nd5 19.Bc4 Be6=+) 18...Ne4 19.ed6 Nd2 20.Nd2 Qd6 21.Qc3 f6 22.Bg6 Rd8 23.Nf3 Nb5 24.Qd3 Be6 25.Bh7 Kh8 26.Bf5 (26.Rfe1 Rac8+–) 26...Bf5 27.Qf5 Re8 28.Nh4 (28.Rfe1 Rac8+–) 28...Re2 29.Ng6 Kg8 30.Bc1 (30.Rab1 Qe6 31.Qe6 Re6+–) 30...Nd4 (30...Re4 31.Bf4 Qe6 32.Qe6 Re6 33.Bg3+=) 31.Qf4 (better 31.Qd3 Re4 32.Be3+–) 31...Nb3?? (better 31...Qf4 32.Nf4 Re5+–) 32.Qd6+– Na1 33.Qd5 Kh7 34.Qd3 Rae8 (34...Ree8+–) 35.Ne7 Kh8 36.Qe2 Nb3 37.Ng6 Kh7 (37...Kg8 38.Qe8 Kh7 39.Ne7 Nc1 40.Qg8) 38.Qe8 Nc5 39.Nf8 (39.Ne7 b5 40.Qg8) 39…Kh8 1–0. GuestJRCJ – GuestNZMF, freechess.org, 2018.

6.e4 a6 7.a3+– Nc6 8.d4 Nf6 9.Bd3 Be7 10.c4 0–0 11.0–0 h6 12.Nbd2 (12.d5 Na5 13.Nc3+–) 12...Nh7 (better 12...Nd4!? 13.Nd4 e5+=) 13.d5+– ed5 (13...Na5 14.Bc3 b6 15.Qc2+–) 14.ed5 (14.cd5 Nf6+–) 14...Na7 (14...Nf6 15.Re1 Re8 16.Bf6 Bf6 17.Re8 Qe8 18.dc6 Ba1 19.cb7 Bb7 20.Qa1+–) 15.Qc2 f5? (15...Nf6 16.Rad1+–) 16.Rfe1 (16.Rae1 b6+–) 16...Ng5 (16...c6 17.Nd4 Bf6 18.a4+–) 17.Nd4 Bf6 18.f4 (18.h4 Ne4 19.Ne4 fe4 20.Be4 c5+–) 18...Nf7 19.Nf5 (worse 19.Bf5 Nc6 20.N2f3 Nd4 21.Nd4 Qd6+–) 19...Bb2 20.Qb2 Bf5 21.Bf5 Nd6 (21...b6 22.Nf3+–) 22.Be6 Kh8 23.c5 Ndb5 (23...Nf5 24.Re5 (24.Qb7?! Nb5+–) 24...Ne7 25.f5+–) 24.a4 Nd6 (24...Rf4 25.ab5 Nb5+–) 25.cd6 Qd6 26.Ne4 Qf4 (26...Qb6 27.Qb6 cb6 28.f5+–) 27.Ra3 b5 (27...Qh4 28.Rg3 Qe7+–) 28.g3 Qf2 29.Nf2 ba4 1–0. GuestMQWN – GuestKGNJ, freechess.org, 2019.

6.e4 Bd7+=.

6.e4 Nf6 7.Nc3+=.

6.e4 Nf6 7.Bf6 Qf6 8.d4 Be7 9.c3 Nc6 10.e5 Qg6 11.g3 0–0 (11...Qf5 12.Bd3 Qh3 13.Nbd2=) 12.Bd3 Qg4 13.0–0 a6 14.Nbd2 b5 15.Qb1 Bb7 (15...Qh5!?+=) 16.Bh7+– Kh8 17.Be4 Rab8 18.Qc2 Na5 (18...Kg8 19.Kg2+–) 19.Bb7 Nb7 (19...Rb7 20.Kg2+–) 20.a4+– Bg5 (better 20...b4+–) 21.Ng5 Qg5 22.h4 Qh5 23.Ne4 Rbd8 (23...Ra8+–) 24.ab5 ab5 25.Ra7 Rb8 26.Rb1 c6 27.c4 Qg6 28.f3 Qf5 (28...Qh5 29.Kg2+–) 29.Kg2 g6 (29...Rfc8+–) 30.Qd2 Kg7 (30...g5 31.cb5 c5+–) 31.g4 Qe4 32.fe4 Rfd8 33.cb5 cb5 34.Rb5 Rd7 (34...Rbc8 35.Rbb7 Rf8 36.Qf2 Kh8 37.Qf6 Kh7 38.Rf7 Rf7 39.Qf7 Kh6 40.Qg7) 35.Qb4 Rc7 (35...Rc8 36.Rbb7 Rc2 37.Kg3 Rc6 38.Rd7 Rc8 39.Rf7 Kg8 40.Rg7 Kh8 41.Rh7 Kg8 42.Rag7) 36.Rbb7 Rcb7 (36...Rc2 37.Kg3 Rf8 38.d5 Kg8 39.de6 Rc3 40.Qc3 g5 41.Qd2 Kh7 42.Rf7 Rf7 43.Rf7 Kg6 44.Qg5) 37.Rb7 Rb7 (37...Re8 38.Rb8 Rb8 39.Qb8 g5 40.hg5 f6 41.ef6 Kf7 42.e5 Kg6 43.Qg8) 38.Qb7 Kf8 (38...g5 39.hg5 Kg6 40.Qe7 Kg7 41.Qd8 f6 42.gf6 Kh6 43.f7 Kg7 44.Qg8 Kh6 45.f8Q) 39.Qc8 Ke7 (39...Kg7 40.Qd8 g5 41.hg5 f6 42.gf6 Kh6 43.f7 Kg7 44.Qg8 Kh6 45.f8Q) 40.g5 f6 (40...f5 41.ef6 Kf7 42.Qd7 Kf8 43.Qe7 Kg8 44.Qg7) 41.gf6 Kf7 42.Qd7 (42.Qd7 Kf8 43.Qe7 Kg8 44.Qg7) 1–0. Ddgs – Zizwe, internet, 2019.

4.Bd4 Nf6

5.a3 a5 +=.

5.a3 b6 6.Bb2 Bd6 7.d3 0–0 8.e4 Nbd7? (better 8...Be7+–) 9.e5+– Ne5 10.Ne5 (10.Be5?! Be5 11.Ne5 Qd4=+) 10...Bb7 11.Nd2 c5 12.bc5 Bc5 13.Nef3 h6 (13...b5 14.d4 Bd6 15.Bd3+– (worse 15.Bb5 Bf3 16.Qf3 Rb8+–)) 14.d4 Be7 15.Bd3 Nd5 16.g3 Nf6 17.Qe2 Rc8 18.c4 Ba6 19.0–0 Nh7 (19...Bb7 20.Ne5+–) 20.Rfe1 Ng5 21.h4 Nf3 22.Qf3 f5 (22...Rc7 23.Qe4 g6 24.h5+–) 23.Re6 Bf6 (23...Rc7+–) 24.Qf5 Bd4 (24...Re8 25.Qh7 Kf7 26.Re8 Ke8+–) 25.Qh7 Kf7 26.Rae1 Bf2 (26...Be5 27.R6e5 Rc6 28.Re7 Qe7 29.Qg7 Ke8 30.Qe7) 27.Kf2 Qf6 (27...Rg8 28.Qf5 Qf6 29.Rf6 gf6 30.Qf6) 28.Rf6 1–0. idontcastle – mpopp, net–chess.com, 2018.

5.a3 b6 6.g3 Bb7 7.Bg2 Be7 8.Bb2 0–0 9.0–0 Nbd7 10.e3 Rc8 11.c4 c5 12.b5 Be4 13.d3 Bg6 14.Nc3 Bh5 15.Ne2 Bd6 16.Qc2 Bf3 17.Bf3 Be5 18.Bb7 Rc7 19.Bg2 Bb2 20.Qb2 Ng4 21.h3 Nge5 22.Rfd1 Qf6 23.Kh1?? (better is 23.Rab1+/–) 23...Qf2+= 24.Qd2 Qf5 (24...Nf3 25.Bf3 Qf3 26.Kh2+=) 25.e4 Qf6 26.Rf1 Qe7 27.Nf4 Qg5 28.Kh2 Ng6 29.h4 Qh6 30.Rf2 Nde5–/+ 31.Bh3 Rd7 32.Rd1 Rfd8 33.Qe2?? Nf4–+ 34.Rf4 Rd3 35.Rd3 Rd3 36.Qf1 Qg6 37.g4 Rd8 38.h5 Qh6 39.a4 g6 40.Rf6 Rf8 41.Kh1 Qg7 42.hg6 fg6 43.g5 Rf6 44.gf6 Qf7?? 45.Qf4= Nd7 46.Qd6 Nf8 47.e5 h5 48.a5 g5? 49.ab6+– ab6 50.Qb6 g4 51.Bg2 h4 52.Qc5 h3 53.Be4 g3?? 54.Qe7 Qe7 55.fe7 Kf7 56.ef8Q Kf8 57.b6 1–0. Fabus,Marian (1810) – Kouba,Petr, SVK–ch, 2005.

5.a3 c6 6.e3 Bd6 7.Be2 Nbd7 8.0–0 e5 9.Bb2 h5 (9...a5 10.b5+/–) 10.d3 Ng4 11.h3 Ndf6? (better is 11...Ngf6!?+/–) 12.e4 (12.hg4 hg4 13.Ne5 Nd5 14.Bg4 Qh4=) 12...Nh6 13.Nbd2 (13.Be5?! Be5 14.Ne5 Qd4 15.Nf7 Nf7+=) 13...Bh3? (13...Nd7+–) 14.gh3 Nfg4 (14...Qe7 15.b5!+–) 15.Nh2 (better is 15.hg4 hg4 16.Nh2 Qh4+–) 15...Nh2 16.Kh2 g5 17.Bh5 Qf6 (17...Qe7 18.Rg1 0–0–0 19.Qf3+–) 18.Qf3 Qg7 19.Rg1 0–0–0 20.Nf1 (20.Qe3 g4 21.Nc4 Bb8+–) 20...Rdf8 (20...f6 21.Ne3+–) 21.Ng3 (21.Qe3 g4+–) 21...f5 (21...Kb8 22.Kg2+–) 22.Nf5 Nf5 23.Bg4 Rh4 24.Bf5 Kc7 25.Kh1 Qh6 26.Rg3 Rf4 27.Qg2 Rg8 28.Rg1 Rh4 29.Bc1 g4 30.Bh6 Rh3 31.Rh3 gh3 32.Qg8 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

5.a3 Bd6 +=.

5.a3 Be7 6.e3 Nbd7 7.Nc3 0–0 8.h3 (8.Bd3 Bd6 9.e4 c5 10.bc5 Bc5+–) 8...Nd5 (8...a5 9.Rb1+=) 9.Ne4 (9.Bc4 Nc3 10.Bc3 Nb6+–) 9...b6 (9...f5 10.Ng3+–) 10.Bd3 (10.c4 c5 11.bc5 bc5 12.cd5 ed5 13.Bg7 Kg7+–) 10...Bb7 (10...f5 11.Ng3+–) 11.Qe2 (11.c4 N5f6 12.Qc2 a5+–) 11...N7f6 (11...a5 12.c4 N5f6 13.Nf6 Bf6 14.Bf6 Qf6 15.Rb1=) 12.Nf6 (12.0–0 Ne4 13.Be4 a5+–) 12...Nf6 (better 12...Bf6 13.0–0 Bd4 14.Nd4 Nf4 15.ef4 Qd4+–) 13.0–0–0?? (better 13.e4!?+–) 13...c5 (13...a5 14.Bc3–/+) 14.bc5 (14.Bf6!? Bf6 15.Ba6=+) 14...bc5–/+ 15.Bc3 (15.Be5 Qa5 16.Bc4 Qa3 17.Bb2 Qb4–/+) 15...Nd5 (15...Rb8 16.Ne5 Bd5–+) 16.h4?? (better 16.Bb2=+) 16...Nc3–+ 17.dc3 Qa5 18.Bc4?? (18.c4 Bf6 19.Bh7 Kh7 20.Ng5 Kg8 21.Rd3 Bg2 22.Rg1–+) 18...Qa3 (18...Qc3?! 19.Qd3 Qf6 20.c3–+) 19.Kd2 Rfd8 20.Ke1 Qc3 (better 20...Bf3 21.gf3 Qc3 22.Kf1 Rd1 23.Qd1 Qc4 24.Qe2–+) 21.Nd2 Bg2 22.Rg1 Bb7 (22...Bc6 23.Bd3–+) 23.Qg4 Bf6 (23...Rab8!? 24.Bd3–+) 24.Bd3 Rd3 (24...Be5 25.Ke2 Bh2 26.Rge1–+) 25.cd3 Qd3 26.Qc4 Qc4 (26...Ba6 27.Qd3 Bd3 28.Rc1–+) 27.Nc4 Bh4 28.Nd6 (28.Rd7 Bd5 29.Ne5 Rb8–+) 28...Bf3 29.Ra1 (29.Rc1 Rd8 30.Ne4 Rd3 31.Nc5 Re3 32.Kf1 Ra3–+) 29...Bf6 (29...Rd8 30.Nc4–+) 30.Rc1 Rd8 31.Nb5 (31.Nc4 Bc3 32.Kf1 Bb4–+) 31...a5 (better 31...Bb2!? 32.Rg3 Bc1 33.Rf3–+) 32.Rg3 Bh5 33.f3 (33.Kf1 Rd1 34.Rd1 Bd1–+) 33...Rc8 (better 33...Bh4 34.Rc5 Bg3 35.Ke2 g6–+) 34.Nd6 (34.Ke2 Bg6–+) 34...Rc6 35.Rh3 Bg6 (35...Rd6?! 36.Rh5 g5 37.Rc5–+) 36.Ne4 Be4 37.fe4 h6 (37...g6 38.Rc4–+) 38.Rh5 (38.Rc4 Be7–+) 38...e5 (38...Bg5 39.Kd2–+) 39.Rb1 (39.Kd2 Kh7–+) 39...Kh7 40.Rb5 c4 (40...Ra6 41.Rc5 a4 42.Ke2–+) 41.Ra5 (41.Kd2 a4–+) 41...c3 42.Ra1 (42.Kd1 c2 43.Kc1 Rc3–+) 42...Be7 43.Re5? (43.Kd1–+) 43...Bf6 (better 43...Bd6 44.Rf5 c2 45.Kd2–+) 44.Rea5?? (better 44.Rb5–/+) 44...c2–+ 45.Rc1 (45.e5 c1R 46.Rc1 Rc1 47.Kd2–+) 45...Bc3 46.Ke2 Ba5 47.Kd3 h5 48.e5 h4 49.Ke2 h3 (49...h3 50.e6 fe6–+) 0–1. Delboy Smith (1780) – Brennybhoy (1945), ChessWorld.net, 2013.

5.b5 a6 6.a4 Nbd7 +=.

5.b5 b6 6.e3 a6 7.c4 c6 8.a4 ab5 9.ab5 Ra1 10.Ba1 cb5 11.cb5 Nbd7 12.Be2 Nc5 13.d4 Nce4 14.0–0 Bb4 15.Nfd2 (15.Ne5 Bb7+–) 15...Bd2 (15...Nd2 16.Nd2 Bb7 17.Nc4+/–) 16.Nd2+– Nd2 17.Qd2 0–0 18.Bf3 Qc7 19.Bc6 (19.Rc1!? Qb8+–) 19...Bb7 20.Rc1 Rc8 21.Bb2 Bc6 22.Rc6 Qb8 23.h3 Rc6 24.bc6 Qc7 25.Qc1 h6 26.f3 Nd5 27.e4 (better is 27.Ba3+/–) 27...Nb4?? (better is 27...Ne7+/–) 28.Qc3 (better is 28.Qc4 Qc6 29.Qb4 f6+–) 28...Nc6? (28...Na6+–) 29.d5 ed5 (29...e5+–) 30.Qg7 1–0. stoker – SLOWGRIND1, Live Game Caissa's Web, 2005.

5.b5 b6 6.e3 Bb7 7.Be2 a6 8.a4 a5 9.d3 Be7 10.0–0 c6 11.Na3 c5 12.Bb2+– 0–0 13.Nc4 Nbd7 14.e4 h6 15.Qd2 Qc7 16.Nfe5 Ne5 17.Be5 Qd8 18.Qf4 Rc8 19.Qg3 Kh7 20.Rad1 Rg8 21.Bb2 Nd7 22.f4 Qc7 23.Qh3 Bf6 24.e5 Bd8 25.f5 Nf8 26.Nd6 Bg5 27.fe6 fe6 28.d4 c4 29.Bc4 Qe7 30.Bd3 Ng6 31.Rf7 Qd6 32.ed6 Bd5 33.Qh5 Rcf8 34.Qg6 Kh8 35.Qh7# 1–0. pierre – SavageCHEZZ, ChessWorld.net, 2006.

5.b5 b6 6.e3+/– Bb7 7.Be2 Bb4 8.Ne5 0–0 (8...c6 9.0–0+/–) 9.Bf3 Bf3 10.Qf3 (10.gf3?! a6+=; worse is 10.Nf3 a6+=) 10...Bd6?? (better is 10...Qd5+/–) 11.Qa8+– Be5 (11...Nd5 12.Nc6 Nc6 13.Qc6+–) 12.Be5 Nd5 (12...Nbd7 13.Qd8 Rd8 14.Bf6 Nf6 15.Nc3+–) 13.0–0 (13.Qa7 Qg5 14.Bg3 Nd7+–) 13...Qd7 14.c4 Nb4 15.Qa7 f6 (15...Rc8 16.Qa4 Nd3+–) 16.Bc7 Nc2 17.Bb8 Qa7 18.Ba7 Na1 19.Bb6 Nc2 20.a4 Nb4 (20...Rc8 21.c5+–) 21.a5 (better is 21.Bc5!? Rc8 22.Bb4 Rc4+–) 21...Rb8 (21...Nd3 22.c5+–) 22.Nc3 (22.Nc3 Nd3 23.c5+–) 1–0. b4_player – opponent, gamecolony.com, 2007.

5.b5 b6 6.e3 Bb7 7.Be2 c5 8.Bb2 Bd6 9.0–0 Nbd7 10.c4 Qc7 11.h3 0–0 12.Qb3 Rfd8 13.d4 cd4 14.Bd4 (14.ed4 Nh5+=) 14...e5= 15.Bb2 (15.Bc3 Nc5 16.Qb2 Na4=) 15...Nc5 16.Qc3 Na4 17.Qb3 Nb2 18.Qb2 Rac8 19.Nbd2 Ne4 (19...e4 20.Nd4=) 20.Ne4 Be4 21.Rac1 Qe7 22.Qb3 Bc5 (22...Rc7 23.Rcd1=) 23.Rfd1+= f6 24.Rd8 Rd8 25.Rd1 Bf5 (25...Rd1 26.Qd1 f5 27.Nd2+=) 26.Qa4 Rd1 27.Bd1 g5 (27...Qb7 28.Be2+=) 28.Bc2+/– Be6 29.h4 (29.Be4!?+/–) 29...g4= 30.Nd2 g3 31.Ne4 gf2 32.Kf2 f5 33.Nc5 Qh4 34.Kg1 bc5 35.Qa7 Qe1 (worse is 35...Qc4 36.Qe7 Qa2 37.Qg5 Kf7 38.Bf5+/–) 36.Kh2 Qe3 37.b6 Qh6 38.Kg1 Qc1 39.Kh2 Qh6 (39...Qf4 40.Kh3 Qg4 41.Kh2 Qh4 (41...Bc4? 42.Qb8 Kf7 43.Qe5+–; worse is 41...Qc4 42.Qa4 Qa4 43.Ba4+=) 42.Kg1 Qd4 (42...Qc4 43.Qb8 Kf7 44.Qc7 Kg6 45.Qe5 Qc2 46.Qe6 Kg5 47.Qe3 Kf6 48.Kh2+–) 43.Kh1 Qa1 44.Kh2 Qd4=) ½–½. Miller – Cannon, Alberta, 1997.

5.b5 c6 6.a4 Bb4 7.e3 0–0 8.Be2 c5 9.Bb2 b6 10.0–0 Nbd7 (10...a6 11.Bc3+–) 11.c3 Ba5 12.Na3 Bb7 (12...e5 13.d3+–) 13.Nc4+– Rc8 (13...a6 14.Na5 ba5 15.c4+–) 14.Nd6 (14.d3 a6+–) 14...Rb8 15.Nb7 Rb7 16.d4 Re8 17.Nd2 Nd5 18.Qb3 Nf8 (18...cd4 19.ed4 Rc7 20.Nc4+–) 19.Bf3 Rd7 20.Nc4 Nf6? (20...cd4 21.cd4 Ng6 22.Rac1+–) 21.Ne5 (21.Bc6 Rc7 22.Be8 Qe8 23.Na5 ba5+–) 21...Rd6 (21...Rc7 22.Nc6 Qd6 23.e4+– (23.Na5?! ba5 24.Qa3 Rd8+–)) 22.Bc6 Qe7 (22...Re7+–) 23.Be8 (23.Be8 Qe8 24.Nc4+–) 1–0. DEFFM – GuestDXYM, freechess.org, 2018.

5.b5 Bd6 6.e3 0–0+= 7.Bd3 (7.Bc4 Nbd7+=) 7...a6 (7...Nbd7 8.Bf6 Nf6 9.Nc3+=) 8.a4 (8.Bf6 Qf6 9.Nc3 ab5 10.Nb5 e5+=) 8...ab5 (8...Nbd7 9.Bb2=) 9.ab5 c6?? (better 9...Ra1 10.Ba1 Nbd7+=) 10.Ra8+– c5 11.Bf6 Qf6 12.Nc3 b6 (12...Qe7 13.Ne4+–) 13.Ne4 Qe7 (13...Qd8 14.Nd6 Qd6 15.0–0+–) 14.Nd6 (14.Qe2 Bc7 15.Ra7 Rd8+–) 14...Qd6 15.Qa1 (15.0–0!? Rd8+–) 15...Bb7 16.Ra7 Bf3 17.gf3 Nd7 18.Rg1 Ne5 (18...g6 19.h3+–) 19.Be4 f5 (19...Rd8+–) 20.Rgg7 (20.Rgg7 Kh8 21.Rh7 Kg8 22.Rag7) 1–0. DEFFM – GuestPXHR, freechess.org, 2018.

5.b5 Bd7 6.e3 Bd6 7.Be2 g5 0–1. bispo (2000) – andrewgb (2065), net–chess.com, 2011.

5.b5 Bd7 6.e3 Be7 7.c4 (7.Ne5 c5 8.Qf3 Qc7+–) 7...b6 (7...c5 8.Be5+–) 8.Bb2 (8.Ne5 a6+–) 8...c5 9.Ne5 Bc8?? (9...a6 10.Qf3 Ra7 11.Be2+–) 10.Be2 (better 10.Qf3 Bb7 11.Qb7+–) 10...Bb7+– 11.Bf3 Qc7 12.0–0 0–0 13.d4 cd4 14.ed4 Nbd7 15.Nc6 Bc6 16.Bc6 a6? (better 16...Rad8!? 17.Qe2 Bd6+–) 17.Ba8+– Ra8 18.Qf3 Qc4 1–0. GuestDWBQ – GuestQMYM, freechess.org, 2017.

5.b5 Nbd7 6.Nc3 +=.

5.b5 Be7 6.e3 0–0 7.c4 c6 8.Be2 a6 A) 9.0–0 A1) 9...Nbd7 10.ba6 (10.bc6 bc6 11.Bc3 Rb8 12.d4+/–; 10.Qc2 cb5 11.cb5 ab5 12.Bb5+/–) 10...Ra6 11.Qc2 c5 12.Bc3+/–; A2) 9...c5 10.Bc3 (10.Bb2 ab5 11.cb5 Nbd7 12.Qc2+/–; 10.Be5 ab5 11.cb5 Nbd7 12.d4+/–) 10...ab5 11.cb5 Nd5 12.Qc2+/–; A3) 9...ab5 10.cb5 b6 11.Qc2 cb5 12.Rc1+/–; B) 9.ba6 B1) 9...Na6 10.d3 (10.0–0 c5 11.Be5 Ng4 12.Bc3+/–; 10.Qb3 Nc5 11.Bc5 Bc5 12.0–0+/–) 10...Bb4 11.Nbd2 Nc7 12.0–0+/–; B2) 9...ba6 10.Be5 (10.Bc3 c5 11.Ne5 Bb7 12.Bf3+/–; 10.0–0 Nbd7 11.Bc3 c5 12.d3+/–) 10...Nbd7 11.Nc3 Qa5 12.Qa4+/–; B3) 9...b6 10.0–0 (10.d3 Ra6 11.0–0 Nbd7 12.Bc3+/–; 10.Qb3 Nbd7 11.0–0 Bd6 12.Bf6+/–) 10...Nbd7 11.Bb2 Ba6 12.d4+/–; C) 9.Qa4 C1) 9...cb5 10.cb5 Nbd7 11.ba6 Bd6 12.Qc2+/–; C2) 9...Ne4 10.Qc2 (10.0–0 c5 11.Bb2 b6 12.d3+/–; 10.Nc3 Nc3 11.dc3 Nd7 12.bc6+/–) 10...Nd6 11.Qb2 Nf5 12.bc6+/–; C3) 9...c5 10.Bc3 (10.Bb2 Nbd7 11.0–0 Re8 12.Rd1+/–; 10.Be5 Nbd7 11.Bb2 Bd6 12.0–0+=) 10...Ne4 11.0–0 Nc3 12.Nc3+/–.

5.b5 Be7 6.e3 0–0 7.c4 c6 8.Be2 cb5 9.cb5 a6 (9...Nbd7 10.0–0+/– (10.Nc3 Bd6 11.Bf6 Nf6 12.0–0+=; 10.Qa4 Qc7 11.Qc4 Qb8 12.Bb2+/–) 10...Bd6 11.Bf6 Nf6 12.d4+/–; 9...Bd6 10.Ne5 (10.d3 Nbd7 11.0–0 e5 12.Bb2+/–; 10.0–0 Nbd7 11.Bf6 Nf6 12.d4+/–) 10...Nfd7 11.Nc4 Bc7 12.f4+/–) 10.Qa4 (10.0–0 ab5 11.Bb5 Bd7 12.Qb3+/–; 10.Nc3 ab5 11.Bb5 Nc6 12.Bf6+=) 10...Bd7 (10...Nbd7 11.ba6 Bd6 (11...Qc7 12.Qc4+/–) 12.0–0+/– (12.Qc2+/–); 10...Bd6 11.0–0 b6 12.Na3+/–) 11.Nc3 (11.0–0 Nd5+/– 12.Nc3+/–) 11...Be8 (11...Ne8 12.0–0+/–) 12.0–0 Nbd7 13.Qc2 ab5 (13...Qc7 14.ba6 ba6 15.e4+/–) 14.Nb5 Nb6 (14...Rc8 15.Qb2+/–) 15.Rfc1 (15.Nc7 Ba4 16.Qc1 Rc8 17.Bb6 Bd6+/–) 15...Nfd5 16.a4 Bf6 (16...Ra5 17.Qb3+/–) 17.Ne5 (17.Bf6 Nf6 18.d4 Bc6+/–) 17...Be5 (17...Ra5 18.Bd3 g6 19.Rcb1+/–) 18.Be5+– f6 (18...Bb5 19.Bb5 Qg5 20.d4+–) 19.Bd4 (19.Bc7 Qc8 20.a5 Bb5 21.Bb5 Nc7 22.Qc7 Qc7 23.Rc7 Rf7+–) 19...e5 (19...Ra5 20.Bc5 Rf7 21.Bd3+–) 20.Bc5 Rc8 (20...Rf7 21.Nd6 Rc7 22.Bb6 Rc2 23.Bd8 Rd2 24.Bb5 (24.Ne8?! Re2 25.Nc7 Rd8+–) 24...Rd8 25.Ne8+–) 21.Qb3 Bf7 (21...Rf7 22.d4 Bb5 23.Bb5+–) 22.Qa3 (22.Bf8?! Nc3 23.Qc3 Rc3 24.Rc3 Kf8+–) 22...Re8 23.Nd6 Rc5 (23...Nd7 24.Nc8 Qc8 25.Bd6+–) 24.Qc5 Re6 25.Nf7 Kf7 26.a5 Rc6 27.Qb5 Rc1 28.Rc1 Na8 29.Qb7 Kg6 30.Rc8 Qa5 31.Ra8 Qd2 32.Ra7 Qe2 33.Qg7 Kf5 34.Qh7 Kg5 35.Rg7 1–0. pereira – opponent, internet, 2009.

5.b5 Be7 6.e3 0–0 7.c4 c6 8.Be2 Nbd7 A) 9.bc6 bc6 10.0–0 (10.Bc3+/– Rb8 11.d4 c5 12.0–0+=; 10.Bf6 Nf6 11.0–0 Bb7 12.Nc3+/–) 10...Qc7 11.Bf6 Bf6 12.d4+/–; B) 9.Bc3 B1) 9...c5 10.Qc2 (10.0–0 a6 11.ba6 ba6 12.d3+/–; 10.d3 a6 11.ba6 Ra6 12.0–0+/–) 10...a6 11.0–0 Qc7 12.Na3+/–; B2) 9...Qc7 10.d4 (10.bc6 bc6 11.0–0 Rb8 12.d4+=; 10.0–0 cb5 11.cb5 e5 12.d3+/–) 10...c5 11.0–0 cd4 12.ed4+/–; B3) 9...cb5 10.cb5 a6 11.0–0 ab5 12.Bb5+/–; C) 9.0–0 C1) 9...Qc7 10.Bf6 (10.bc6 bc6 11.Bf6 Bf6 12.d4+=; 10.Bc3 cb5 11.cb5 e5 12.d3+/–) 10...Bf6 11.d4 c5 12.Nc3+/–; C2) 9...Bd6 10.bc6 (10.Bf6 Nf6 11.d4 c5 12.Qd3+/–; 10.d3 c5 11.Bc3 a6 12.Na3+/–) 10...bc6 11.Bf6 Qf6 12.d4+/–; C3) 9...cb5 10.cb5 Bd6 11.Bf6 Nf6 12.d4+/–.

5.b5 Be7 6.e3 0–0 7.c4 c6 8.Be2 Ne4 (8...Nbd7 9.bc6 bc6 10.Bc3+/–) 9.d3 (9.0–0 c5 10.Bb2 Nd7+/–) 9...Bb4 10.Nbd2 (10.Kf1 Nd6 11.Qa4 c5+/–) 10...Nd2+= 11.Nd2 Bd2 (11...cb5!? 12.cb5 Qd5+=) 12.Qd2+/– cb5 13.cb5 b6?? (better is 13...Qd5+/–) 14.Bf3+– Nc6 (14...e5 15.Bb2 (15.Ba8?! ed4 16.0–0 Be6+–) 15...Bd7 16.Qc3+–) 15.bc6 (better is 15.Bc6!? Bd7 16.Ba8 Qa8+–) 15...Qc7 16.0–0 Ba6 17.Rfc1 Rac8 18.Rab1 e5 19.Ba1 Rcd8 20.d4 f6 21.Qb4 Rb8 22.d5 Rbd8 23.Rd1 Qd6 24.Qd6 Rd6 25.a4 g5 26.Bb2 Rf7 27.Ba3 Rd8 28.d6 Kg7 29.Bh5 Rff8 30.d7 Kh6 31.Bf8 Kh5 32.Be7 Rg8 33.c7 (33.c7 Be2 34.Rd6+–) 1–0. AbstractPoetic – jaap, internet, 2007.

5.c3 Bd7 6.Bf6 Qf6 7.d4 +=.

5.c3 Be7 6.Bf6 Bf6 7.d4 0–0 (7...Nd7 8.e3+/–) 8.e4 Nc6 (8...a5 9.b5+/–) 9.e5+– Be7 10.Bd3 f5 11.0–0 a6 12.a4 b6 (12...Qd7 13.Nbd2+–) 13.Bc4 Bd7 (13...Qd7 14.Qb3+–) 14.Qb3 Qc8 15.d5 Nd8 (15...ed5 16.Bd5 Kh8 17.e6+–) 16.Nd4 ed5 (16...Be8 17.Nd2+–) 17.Bd5 Kh8 18.e6 c6 (18...Be8 19.Ba8 Qa8 20.Nd2+–) 19.ed7 Qd7 20.Bf3 Rb8 (20...Bf6 21.Rd1 Bd4 22.Rd4+–) 21.Rd1 (21.b5 c5 22.Ne2 ab5 23.ab5 Bd6+–) 21...Qc7 (21...Bd6 22.Qc4 c5 23.Nc2+–) 22.Qc2 Bd6 23.h3 c5 (23...g6 24.b5+–) 24.Nf5 Bh2 25.Kh1 cb4 26.g3 Bg3 27.fg3 Ne6 28.Bg2 Rfd8 29.Re1 Nd4 30.Nd4 Rd4 31.Re3 Rbd8 32.Qe2 h6 33.cd4 a5 34.Re8 Re8 35.Qe8 1–0. Schueller,Rudolf (1865) – Neffgen,Dieter, DESC, 2003.

5.Nc3 Bb4 6.a3 Be7 7.e4 =.

5.Nc3 Bd6 6.b5 0–0 7.e4. Jan van Dijk – xadrez, ChessWorld.net, 2003.

5.e3 Bb4 6.Bc4 Nc6 7.Bb2 0–0 8.0–0 Bd6 9.Nh4 Ne4 10.Qg4= Nf6 11.Qg5 Be7 12.f4?? Nd5?? 13.Qg7# 1–0. abhijit – austenidol (1620), net–chess.com, 2002.

5.Bf6 Qf6= 6.e4?? (better is 6.c3 Bb4 7.d4=) 6...Qa1–+ 7.Nc3 (7.a3 a5 8.c3 ab4 9.ab4 Qb2–+) 7...Qd1 8.Nd1 Bb4 9.Bc4 (9.c3 Be7–+) 9...Nc6 10.c3 Bc5 (10...Ba3 11.Bb5–+) 11.0–0 (11.d4 Ba3–+) 11...Bd7 12.Ne3 (12.d4 Ba3–+) 12...0–0–0 (12...Be3 13.fe3 f6 14.d4–+) 13.Ng5 (13.d4 Be7–+). Jan van Dijk – Axel van Dijk, ChessWorld.net, 2003.

4.Nd4 Bb4??

5.a3?? Bc5 6.Nb3 Bd6?? (better is 6...Bf8+=) 7.Bg7+– Bd7 (7...Be5 8.Be5 Nf6 9.e4+–) 8.Bh8 Nf6 9.e3 Be5 (9...Bc6 10.Na5+–) 10.d4 +–. Klaus Behrmann – Axel van Dijk, ChessWorld.net, 2003.

5.e3?? Nf6= 6.Bd3 Bd7 7.0–0 c5 8.Nf3 b5 9.a3 Ba5 10.Nc3 Bc3 11.Bc3 c4 12.Be2 Nc6 13.d3 cd3 14.cd3 0–0 15.d4 a5 (15...a6 16.Bd3+=) 16.Qb3 Ne7 17.Ne5 (worse is 17.Bb5 a4 18.Qc4 Rc8 19.Qa4 Rc3 20.Bd7 Nd7–/+) 17...Ra7 18.Nd7 Nd7 19.Qb5 Nf6 20.Bf3 Ned5 21.Bd5 Nd5 22.Bd2 Qb8 23.Qb8 Rb8 24.Rab1 Rb1 25.Rb1 g6 26.Rb5 a4 27.e4 Nf6 28.f3 Kg7 29.Kf2 Nd7 30.Bc3 f6 31.f4 h5 32.h3 g5 33.fg5 fg5 34.Rg5 Kh6 35.Ra5 Ra5 36.e5?? Rb5–+ 0–1. Mr.Oldenslo – diggerdogwoofwoof, ChessWorld.net, 2012.

5.e4 Nf6 6.a3 Bd6 7.Nb5 =.

5.e4 Bf8 6.Be2 (6.Bc4 Qf6 7.Qh5 Bd6=) 6...Nf6= 7.e5 Nfd7 8.Nf3 Bc5 (8...Be7 9.0–0=) 9.d4+= Bb6 (9...Be7 10.0–0+=) 10.0–0 (10.Na3 0–0+=) 10...0–0 11.Na3 c5 12.d5 (12.Nc4 Nc6 13.Ba3 Bc7+=) 12...ed5 13.Qd5 Nc6 (13...Qe7 14.Nc4+=) 14.Qe4 (14.Rfd1 Qe7+=) 14...Re8 15.Bd3 g6 (15...Nf8 16.Nb5+=) 16.Qf4 (16.Nc4 Bc7+=) 16...Nf8 (16...Bc7 17.Nc4+=) 17.Ng5 Be6 (17...Qe7 18.Ne4 Rd8 19.Nc4+=) 18.Nb5 (18.Ne4 Re7+/–) 18...Nd4 (18...Nb4 19.Be4 (19.Ne6?! Ne6 20.Qc4 Nd3 21.cd3 Ba5+=) 19...Nd5 20.Qh4+–) 19.Nd6 (19.Nd4 cd4 20.Ne4 Re7+/–) 19...Re7 20.Bd4 (20.Rfd1 Qc7+/–) 20...cd4 21.Be4 Rb8 22.Rfd1 h6 (22...Bc5!?+/–) 23.Ne6 Ne6 24.Qh6 Qf8 (24...Bc7 25.Rd3 Qf8 26.Qh4+/–) 25.Qh4 (25.Qh4 Bc5 26.Nc4+/–) 1–0. gtate (1930) – yetzaline (2100), net–chess.com, 2006.

5.Ne6 fe6 6.Bg7 Nc6 7.Bh8 e5 8.e3 Qg5 9.h4 Qh6 10.Bb5 Nge7 (10...Bd7 11.Qf3 Be7 12.Nc3+–) 11.Be5 Bd7 (11...a6 12.Bc6 Qc6 13.Qh5 Ng6 14.0–0+–) 12.Bc7 Qg7 (12...Rc8 13.Bg3+–) 13.Qh5 Kf8 14.c3 Ba5 (14...Qg2 15.Rf1 (15.cb4?! Qh1 16.Bf1 Nb4+–) 15...Qg7 16.d4+–) 15.Ba5 (15.Ba5 Bg4 16.Qg5 Na5 17.Bd3+–) 1–0. GuestVTXR – GuestFXRP, freechess.org, 2019.

5.Ne6!!+– Be6 6.Bg7 f6 (6...Qg5 7.Bh8 Nc6+–) 7.e3 Qd5 8.c4 (better is 8.Bh8 Nd7 9.a3+–) 8...Qe5+= 9.Nc3 Bc3 10.Rb1 Ba5 (10...Nc6!? 11.dc3 Qc3 12.Qd2 Qd2 13.Kd2 0–0–0 14.Kc3 Nge7 15.Bh8 Rh8+=) 11.Rb5= (11.Bh8 Nc6 12.Rb5 Qe4 13.Rb7 0–0–0–+) 11...Bd2?? (better is 11...c5 12.Ra5 Qc7 13.Qa4 Nc6 14.Rc5 Qg7 15.Rc6 Bd7+=) 12.Kd2+– Qe4?! (12...c5 13.f4 Qd6 14.Kc1 Qd1 15.Kd1 Ne7 16.Bh8 Kf7+–) 13.Qb3 (better is 13.Bh8 Nc6 14.Kc1 b6+–) 13...b6? (13...Nd7!? 14.Bh8 0–0–0+=) 14.Qd3 Qc6 15.Bh8 Nd7 16.Kc3 (16.Be2 0–0–0 17.Bf3 Qc4 18.Qc4 Bc4 19.Rb4+/–) 16...0–0–0+= 17.Qb1 (better is 17.Kb2!?+=) 17...Nc5+= 18.f3 (18.Qh7 Ne4 19.Kb2 Rd2 20.Kc1 Bc4 21.Qe4 Qe4 22.Kd2 Bb5 23.Bb5 Qb4 24.Kc1 Qb5–+) 18...Qd7 19.Rc5?? (19.Qc2 Qf7 20.Rc5 bc5 21.Qa4=) 19...bc5 (better is 19...Qd2 20.Kb3 bc5 21.Bd3 Rd3 22.Qd3 Qd3 23.Kb2 Qd2 24.Kb3 Qe3 25.Kb2 Qe2 26.Kc3 Bf5 27.Rc1 Qe3 28.Kb2 Qd2 29.Rc2 Qc2 30.Ka3 Qd2 31.Bf6 Qb4) 20.Qc2 (better is 20.Bd3 Qd6 21.Rd1+/–) 20...Bf5–/+ 21.e4 Qd4 22.Kb3 Be6 23.Be2?? (23.e5 Qe5 24.Qc3 Rd4–/+) 23...Rd6 (better is 23...Qe3 24.Kb2 Rd2–+) 24.a4?? (24.Qc3 Rb6 25.Kc2+=) 24...Qe3–+ 25.Qc3 (25.Kb2 Rd2 26.Bd1 Bc4 27.Qd2 Qd2 28.Bc2–+) 25...Qe2 26.Re1 (26.Rc1 Rd3 27.h3 Rc3 28.Kc3 Qg2 29.f4–+) 26...Bc4! (26...Bc4 27.Qc4 Rd3 28.Qd3 Qd3 29.Kb2 Qd2 30.Kb3 Qe1–+) 0–1. purplegadge (1670) – injection61 (1665), gameknot.com, 2011.

5.Ne6!!+– Be6 6.Bg7 (6...Nf6 7.Bh8+–) 1–0. Wall,Bill – Rye, Internet, 2004.

4.Nd4 e5

5.Nb3 Nd7 +=.

5.Nb3 Nf6 +=.

5.Nb5 a6 6.N5c3 (6.N5a3 Bb4 7.Be5 Nf6=) 6...Bb4=+ 7.Ne4 f6 (7...Nc6 8.Nbc3=+) 8.e3= Bd6 (8...Nc6!?=) 9.Bc4 Bf5 10.Qh5 Bg6 11.Qf3 Qe7 (11...Nc6 12.0–0+=) 12.0–0 Nc6 13.Nd6 Qd6 14.Nc3 (14.d3 e4 15.de4 Ne5 16.Be5 Qe5+/–) 14...Bc2 15.d4 (15.d3 Na5 16.Ne4 Qe7 17.Bg8 Rg8 18.Qh5 g6+=) 15...ed4 16.ed4 0–0–0 17.Rfe1 (17.d5 Ne5 18.Qe2=+) 17...g6 (17...Nd4!? 18.Qg4 Qd7=+) 18.Be6 (18.Ne4 Qb4 19.Be6 Kb8+/–) 18...Kb8+= 19.Rac1 (19.d5!? Nd4 20.Qg4 Ne6 21.Re6+=) 19...Bf5 20.d5 Nd4 21.Qe3 Nc2 22.Ne4 Be4 23.Qe4 Ne1 24.Qe1 h5 25.Qa5 Rh6 26.Ba3 Qe5 27.Re1 Qd4 28.Bc5 Qb2 29.d6 Rh7 30.Rd1 (30...b6 31.dc7 Kc7 32.Qb6 Qb6 33.Bb6 Kb6 34.Rd8=; 30.dc7!? Rc7 31.Bb6+=) =. 31qaz – JoeJoe, Live Game Caissa's Web, 2004.

5.Nf3 e4 6.Nd4 Bb4? (better is 6...Nf6 7.a3 a5+=) 7.Ne6! Be6 (7...fe6 8.Bg7) 8.Bg7 Ne7 (8...e3 9.Bh8 ef2 10.Kf2+–) 9.Bh8 Nd7 (9...Nd5 10.e3+–) 10.e3 (10.Nc3 Ng6 11.Rb1 Bf8+–) 10...Nc5 (10...Nd5 11.a3 Ba5 12.Qh5+–) 11.c3 (11.Qh5 Qd5 12.Qh7 0–0–0+–) 11...Ba5 12.Be2 (12.Qh5 Bb6+–) 12...Ng6 (12...Nd3 13.Bd3 Qd3 14.f3 ef3 15.gf3+–) 13.Bd4 Nd7 (13...Nd3 14.Bd3 ed3 15.0–0+–) 14.0–0 Qg5 (14...Nh4 15.Qa4 c6 16.Rd1+–) 15.f4 Qf5?? (15...Qf5 16.g4 Qd5+–; 15...ef3 16.Rf3 c5+–) 1–0. juanpacio – blaine0084, internet, 2007.

4.Nd4 Nf6

5.a3 +=.

5.b5 Bc5 6.e3 0–0 7.Be2 e5 8.Nf3 e4 9.Nd4 Qd7 10.Nb3 Bd6 11.Bf6 gf6 12.Nc3 Be5? (better is 12...Re8!?+/–) 13.Ne4+– Qf5 (13...Qd5 14.Nbc5 f5 15.c4+–) 14.Nbc5 (better is 14.Ng3!? Qe6 15.d4 Bd6+–) 14...Ba1 15.Qa1 Qe5?? (better is 15...Kg7+–) 16.Nf6 Qf6 17.Qf6 Nd7 18.Qg5 Kh8 19.Qe7 Rg8 20.Nd7 Bd7 21.Qd7 Rad8 22.Qc7 Rc8 23.Qb7 Rc2 24.Qf7 Rc1 25.Bd1 Rd1 26.Kd1 Rg2 27.Qf8 Rg8 28.Qf6 Rg7 29.Rg1 h5 (29...Kg8 30.Qg7) 30.Qg7 1–0. Fournier,Frederic (2270) – montenegrino (1915), Active, 2007.

5.b5 Bc5 6.Nf3 Bd7 (6...a6 7.e3+=) 7.e3 0–0 (7...a6 8.a4+–) 8.a4 a6 9.c4 ab5 10.cb5 c6 11.Nc3 cb5 (11...Bd6 12.e4 e5 13.Be2+=) 12.ab5+– Ra1 13.Qa1 Nd5? (better 13...Bd6+–) 14.Nd5+– ed5 15.Bg7 Re8 16.Bf6 Qb6 17.Bd4 (17.Bh8 Bf8+–) 17...Bb5 18.Bb5 (18.Bh8 d4 19.Bd4 Bf1 20.Bc5 Qc5 21.Rf1 Nc6+–) 18...Qb5 19.Bc5 Qc5 20.0–0 Nc6 21.Qb2 b5 (21...Qb4!? 22.Qc2 Qg4+–) 22.Rc1 Qb4 23.Qb4 (23.Qf6 Re6 24.Qg5 Rg6 25.Qd5 Qb2+–) 23...Nb4 24.Rb1 Ra8 25.g3 (25.Kf1 Ra4+–) 25...Ra4 26.Nd4 1–0. Abdullaevich (1945) – pvlpttn (1905), lichess.org, 2020.

3.Nf3 f6

4.a3 e5 5.c3 a5 6.b5 c5 7.Qc2 Be6 =.

4.c3 e5 5.a3 a5 6.b5 c5 7.Qc2 Be6 =.

4.d3 e5 5.e4 (better is 5.c3!?=) 5...Bb4–/+ 6.Nfd2 (6.c3 dc3 7.Bc3 Bc3 8.Nc3 c5–/+) 6...c5 (6...Ne7 7.a3 Ba5 8.Be2–/+) 7.c3 dc3 8.Bc3 (8.Nc3 Ne7–/+) 8...Ne7 9.Qa4 (9.Qh5 g6 10.Qh6 Nbc6–+) 9...Nbc6 10.Na3?? (better is 10.Bb4 Qd4 11.Nb3 Qb4 12.Qb4 Nb4 13.Kd1–+) 10...Bc3 (11.Rd1 Be6–+) –+. xadrez – anizan dolivia, ChessWorld.net, 2003.

4.Bd4 e5

5.Bb2 Bb4= 6.e3 (6.e4 Nc6=) 6...Be6 7.a3 Bd6 8.d4 Nc6 9.Bb5 Nge7 10.0–0 0–0 11.Bc6 bc6 12.de5 fe5 13.Ne5 Rb8 14.Qc1 Qe8 15.Re1 (15.Nd2!?+=) 15...Ng6=+ 16.Nd3 Nh4 17.Nd2 Qh5 18.Nf1? (better is 18.f4=+) 18…Ng2!–+ (19.Ng3 Bg3 20.fg3 Ne1 21.Qe1 Qf3–+) 0–1. Klaus Behrmann – anizan dolivia, ChessWorld.net, 2003.

5.Bc3 c5 6.bc5+/– Bc5 7.e3 Bg4 (7...Ne7 8.d4 ed4 9.Bd4 (9.Nd4?! Qd5+/–) 9...Bb4 10.c3+/–) 8.Be2 (8.Bb5 Nc6 9.d4 ed4 10.ed4 Qe7 11.Qe2 Bf3 12.gf3 Bd6+/–) 8...Nc6 (8...Ne7 9.d4 ed4 10.ed4+/–) 9.h3 (better is 9.0–0+/–) 9...e4?? (better is 9...Be6+= the only rescuing move) 10.hg4+– ef3 11.gf3 (11.Bf3 keeps an even firmer grip 11...Rb8+–) 11...Qd6 (11...Qd7 12.Bd3+–) 12.d4 Bb4 13.a3 Bc3 14.Nc3 a6 15.Ne4 Qc7 16.Qd2 Rd8 17.Nc5 Rd5 18.c4 Rc5 19.dc5 Nge7 20.Qd6 Qa5 21.Kf1 Kf7 22.Kg2 Rd8 23.Qh2 h6 24.Rad1 Rd1 25.Rd1 Qc5 26.Qh5 Qh5 27.gh5 Ne5 28.f4 N5c6 29.Rd7 g5 30.hg6! a fitting end to a beautiful game 30...Kg6 31.Rb7 Kf5 32.Bf3 Ke6 33.Rb6 Kd6 34.Ra6 Kc5 35.Bc6 Nc6 36.Rc6! the punch 36...Kc6 37.a4 f5 38.a5 h5 39.f3 Kb7 40.e4 fe4 41.fe4 Ka6 42.f5 Ka5 43.f6 Kb4 44.f7 Kc4 45.f8Q Kd4 46.Qf5 h4 47.Kf2 Kd3 48.Qd5 Kc3 49.Ke2 h3 50.Qc5 Kb2 51.Kd2 h2 52.Qb4 Ka1 53.Kc2 h1Q 54.Qb2 (54.Qa3) 1–0. Raabe,Joachim (1865) – Ommer,Hans, Bergisch Gladbach–ch op, 2001.

5.Bc3 Nc6 6.b5 Nd4 7.e3 Nf3 8.Qf3+– Bd6 (8...Qd7 9.d4+–) 9.Bc4 Ne7 10.d4 (better 10.d3+–) 10...c6? (better 10...ed4 11.ed4 Qd7+–) 11.de5 Be5 (11...fe5 12.Bf7 Kd7 13.Nd2+–) 12.Be5 fe5 13.Qf7 Kd7 14.Qg7 Kc7 (14...Qf8 15.Qe5 Ng6+–) 15.Qe5 Kb6 16.a4 a5 17.ba6! ba6 (17...Ra6 18.Nc3 Ka7 19.Rd1+–) 18.Nc3 (better 18.Nd2 Ka7 19.Qc5 Kb8 20.Rb1 Bb7 21.Ne4+–) 18...Bb7 (18...Ka7 19.Qc5 Kb8 20.Rb1 Bb7+–) 19.Rd1 Qf8 (19...Nd5 20.Rb1 Ka7 21.Nd5 Re8 22.Qd4 Kb8+–) 20.Rb1 Ka7 21.Ba6! Ka6 (21...Ka6 22.Qc7 Combination; 21...Ba6 22.Qc5) 22.Qc7 Nc8 (22...Qf2 23.Kf2 Rhf8 24.Ke2 Rf2 25.Ke1 Re2 26.Ke2 Nc8 27.Qb7 Ka5 28.Qa8 Na7 29.Qa7) 23.Qb7 Ka5 24.Qa8 (24.Qa8 Na7 25.Qa7) 1–0. Adlai – Lauri, corr, 2018.

5.Bc3 Bf5 +=.

5.Bc3 e4

6.Nd4 Bb4 7.Bb2 Ne7 (7...c5 8.Nb3 c4 9.Nd4=) 8.e3 0–0 9.Bc4 Kh8 10.0–0 Nbc6 11.Qe2 Ne5 12.Bb3 c5 13.Ne6 Be6 14.Be6 Qd6 15.Bb3 Rac8 (15...Rad8 16.a3 Ba5 17.Nc3+=) 16.a3 (16.Be5 Qe5 (worse is 16...fe5 17.c3+=) 17.c3 Ba5=) 16...Ba5 17.Nc3 c4 18.Ba2 (worse is 18.Ne4 Qd5 19.Be5 fe5–+) 18...f5 (18...Qb6 19.Rfb1 Qc6 20.a4=) 19.f4 (19.Nb5!? Qd5 20.Be5 Qb5 21.Bd6=) 19...ef3+= 20.gf3 Rfd8 (20...f4 21.Kh1+=) 21.Rad1 Qb6 22.Ba1 Qc6 23.Qg2 Rd6 (23...N5g6 24.f4+=) 24.Kf2 (24.Ne2 Rg6 25.Ng3 Qc5+=) 24...f4! 25.e4 (25.ef4 Qc5 Double attack) 25...Re8 26.Ke1 (26.Qg5 Qc5 27.Ke2 N7c6–+) 26...Nf5 27.Ne2?? (27.Rb1–+) 27...Ne3 (27...Ne3 28.Kf2 Ng2 29.Kg2 Nf3 30.Rf3 Qe4–+) 0–1. nbh999 – anizandolivia, ChessWorld.net, 2003.

6.Nd4 Bb4 7.Bb4 Qd4.

6.Nd4 Bb4 7.e3 Bc3 8.Nc3 f5 9.Bc4 Nf6 10.Qb1 c6 11.Qb3 Qe7 12.Be6 Be6 13.Ne6 (13.Qe6 Qe6 14.Ne6 Kd7 15.Ng7 f4 16.ef4 Rg8+/–) 13...a5 14.Rb1 b5 15.a4 b4 16.Ne2 Ra7 17.N2d4 g6 18.c3 (18.0–0 Rd7 19.Rfd1 c5=) 18...Nd5 (18...Rb7 19.0–0+=) 19.0–0 (19.Nc6 Nc6 20.Qd5 Qd7+/–) 19...Qd6 20.cb4 ab4 21.Rfc1 ½–½. anizandolivia – Alissa, ChessWorld.net, 2003.

6.Nd4 Bb4 7.e3 Bd6 +=.

6.Ng1 Bd6 7.e3 Bf5 +=.

6.Ng1 Ne7 7.a3 a5 8.b5 Qd5 9.e3 Be6 10.Ne2 Qb5 11.Nd4 Qd5 12.Ne6 Qe6 13.Bb5 (13.Qh5 Ng6+/–) 13...c6 14.Ba4 (14.Be2 Nd5+=) 14...Nd5 15.Bb3 a4 16.Ba2 Qf5 17.0–0 (17.Bd4!?=) 17...Nc3=+ 18.Nc3 Bd6 (18...Ba3!? 19.f3 ef3 20.Rf3 Qh5=+) 19.f3+= Qh5 20.f4 Qd1 21.Rfd1 Ke7 22.Ne4 Ba3 23.d4 b5 24.d5 Rd8 25.dc6 Rd1 (< 25...Nc6 26.Bd5 Rd5 27.Rd5+=) 26.Rd1 Nc6 27.Rd3 Bb2 28.Nd6?? (28...Nb4 29.Nf5 Kf8 30.Rd7 Na2 31.Rg7–+; better is 28.Rd5 b4 29.Rh5–/+) –+. nbh999 – Alissa, ChessWorld.net, 2003.

5.Be5?? fe5–+

6.c3 e4 7.Nd4 –+.

6.Ne5? Bb4?! 7.e3 Nf6 8.Bc4 –+.

6.Ne5? Qd4

7.Nc3 Qe5 8.e4 (8.a3 Nf6–+) 8...Bb4 –+. Jan van Dijk – Alissa, ChessWorld.net, 2003.

7.Nf7 Qa1 8.Nh8 Qf6 9.Nc3 –+.

7.Nf7 Kf7 8.c3 Qg4 9.f3 Qh5 10.e4 a5 (10...Bd6!? 11.Bc4 Kg6 12.f4 Qd1 13.Kd1 Bf4 14.g3–+) 11.Bc4 Kg6 12.d4 ab4 13.cb4 (13.Qb3 Nh6–+) 13...Bb4 14.Nd2 (14.Kf2 Nc6 15.Qb3 Nh6–+) 14...Nc6 15.0–0 Nd4 16.g4 (16.Nb3 Nb3 17.ab3 Ra1 18.Qa1–+) 16...Qc5 17.Qc1 (17.Bg8 Nb3 18.Kh1 Nd2 19.Bd5 Nf1 20.Qf1–+) 17...Ne2 18.Kg2 Nc1 19.Rac1 Qe3 20.Nb3 Ra2 21.Kh1 Bg4! 22.Be2 (22.fg4 Qe4) 22...Qe2 (23.Nd2 Rd2 24.Rc6 bc6 25.Rf2 Bf3 26.Rf3 Qh2) 0–1. Jan van Dijk – anizan dolivia, ChessWorld.net, 2003.

7.Ng6 Qa1?! 8.Nh8 Qf6 9.Nc3 –+.

7.Ng6 hg6 8.c3 Qe4 –+.

4.Nd4 e5

5.Nf3 Be6 6.a3+= Ne7 (6...c5 7.bc5 Bc5 8.e3+–) 7.e3 Ng6 8.Bb5 (8.d4 e4 9.Nfd2 f5+–) 8...c6 9.Ba4 (9.Be2 a5+–) 9...Be7 10.d3 0–0 11.Nbd2 b5 (11...a5 12.b5+=) 12.Bb3+– Bb3 13.Nb3 (13.cb3?! Qd3 14.Qb1 Qb1 15.Rb1 Rd8=) 13...Nd7 14.0–0 c5 15.bc5 Nc5 16.Nc5 Bc5 17.c3 Bb6 (17...Rb8 18.Qb3 Kh8 19.Rfd1+–) 18.d4 ed4 (18...Rb8 19.a4 e4 20.Nd2 ba4 21.Ba3+–) 19.cd4 (19.Qb3 Kh8 20.cd4 Qd7+–) 19...Kh8 (19...Qd5 20.Re1+–) 20.Bc3 a5 (20...Rc8!? 21.Qb3 Qd7+–) 21.Rb1 Qd7 22.Qe2 b4 23.ab4 ab4 (23...a4 24.Qa2+–) 24.Bb4 Rfc8 25.Rfc1 Qe6 26.Rc8 Rc8 27.Qa6 Rb8 (27...Rc6 28.Ba5 Bc7 29.Qa8 Nf8 30.Qf8 Qg8 31.Qg8 Kg8+–) 28.h3 (better 28.Bc5+–) 28...Qe4 (28...Qf5 29.Nd2 Qd7 30.Ba5+–) 29.Rc1 h6 (29...Bd8 30.Bd6 Rb1 31.Rb1 Qb1 32.Kh2+–) 30.Bc5 (30.Bd6 Qa8 31.Qd3 Rd8 32.Qg6 Rd6+–) 30...Bc7 31.Bd6 Bd6 32.Qd6 Re8 33.Qc6 Qe7 34.Qc7 Qe4 (34...Qe6 35.Rc6 Qg8 36.Qd7+–) 35.Qg3 (35.Qc2 Qc2 36.Rc2 Kh7+–) 35...Kh7 36.Nd2 Qd3 37.Nf3 Re3?? (37...Qe4 38.Rc7 Qe6+–) 38.Kh2 (better 38.Ng5 fg5 39.Qe3+– (39.fe3?! Nf4 40.Re1 Ne2 41.Re2 Qe2+–)) 38...Re8?? (38...Rf3 39.Qf3 Qd4 40.g3+–) 39.Rc7 (better 39.Ng5! hg5 40.Qd3+–) 39...Qf5 40.Nh4 Qg5? (better 40...Qh5!? 41.Ng6 Qg6+–) 41.Qg5+– hg5 42.Nf3 (better 42.Nf5 Rg8 43.g3+–) 42...Re2+– 43.Kg3 (43.d5 Nh4 44.Nh4 gh4+–) 43...Nh4 (43...Ne7 44.Rc3+–) 44.d5 (44.Nh4 gh4 45.Kf3 Rd2+–) 44...Nf3? (better 44...Nf5 45.Kh2 Rf2+–) 45.Kf3+– (45.gf3?! Rd2+=) 45...Rd2 46.Rc5 Kg6 47.Ke3 Rd1 48.f3 (48.Ke2 Rd4+–) 48...Kh5? (better 48...Kf5!?+–) 49.Ke4 Kh4 (49...Kg6+–) 50.Rc6 (50.Rc2 Kh5+–) 50...Kg3 (50...Re1 51.Kd4 Rd1 52.Kc5+–) 51.d6 (better 51.Rc2+–) 51...Kg2+= 52.Kf5 Kh3 53.Kg6 (better 53.Ke6 Re1 54.Kd7+–) 53...Kg3= 54.Kg7 Kf3 55.Kf6 g4 56.Ke6 g3 57.Rc7 g2 (57...g2 58.Rg7 Kf2=). Dino_Jarach (1750) – abdlkdrt (1625), lichess.org, 2018.

5.Nf3 Bg4 6.b5+– Ne7 7.Nc3 Nd5 8.e4 Nb6 9.a4 a6 10.a5 Nc8 11.h3 Bh5 12.Be2 Bb4 (12...Nd6 13.ba6 Na6 14.0–0+–) 13.Nd5 Bf7?? (13...Bd6 14.Nh4 Be2 15.Qe2 0–0+–) 14.Nb4 Nd7 (14...0–0 15.d4 ed4 16.ba6 Na6 17.Na6 ba6 18.Bd4+–) 15.ba6 ba6 (15...Nd6 16.ab7 Nb7+–) 16.Nc6 Nd6 17.Nd8 Kd8 18.d4 Nb5 19.de5 fe5 20.Ne5 Be6 21.Bc4 Re8 22.Be6 Re6 23.Qd7 1–0. Pereira – t4747, internet, 2020.

5.Nb3 Bb4

6.a3 Bd6 7.e3 Ne7 8.c4 Ng6 9.c5 Be7 10.Bc4 Nd7 11.d4 c6 12.0–0 Ndf8 13.f4 b5 14.cb6 Qb6? (better is 14...ef4 15.b7 Bb7 16.ef4 f5+/–) 15.f5+– (15.fe5?! Be6 16.Be6 Ne6 17.ef6 Bf6+/–) 15...Nh4 16.Qh5 Nhg6 17.fg6 Ng6 18.N1d2 ed4 19.Bd4 c5 (19...Qd8 20.Na5 Bd7 21.Nf3+–) 20.Nc5 Bc5 21.Bc5 Qa5 (21...Qb8 22.Ne4 f5 23.Nd6 Kd8 24.Nf7 Ke8 25.Nh8+–) 22.Qd5 Qc5 (22...Rb8 23.Ne4 Bd7 24.Rab1+–) 23.Qc5 Be6 24.Be6 Rc8 25.Qc8 Ke7 26.Qd7 Kf8 27.Qf7 1–0. Fournier,Frederic (1950) – Krasavec_11 (1640), ChessOK.com, 2013.

6.a3 Bd6 7.e4 b6 (7...Be6!?+=) 8.Bc4+– Bb7 (8...Ne7 9.Nc3+–) 9.Qh5 (9.Nc3 Nc6+–) 9...g6+– 10.Qf3 (10.Qe2 Ne7+–) 10...Nd7 11.0–0 f5 12.Nc3 Ngf6 13.d3 fe4 (13...Qe7!?+–) 14.Ne4+– Ne4?? (better 14...Be4 15.de4 c6+–) 15.Qf7 (15.de4?! Rf8 16.Qh3 Qe7+=) 1–0. GuestCBNL – GuestVWWH, freechess.org, 2019.

6.e3 Be6= 7.a3 Be7 +=.

6.e3 Be6= 7.Be2 Ne7 8.a3 Bd6 9.Na5 Qc8 10.Nc4 0–0 11.Nd6 cd6 12.0–0 Nbc6 13.d4 d5 14.Nc3 Qd7 15.Rb1 Rac8 16.Re1 e4 17.Na4 Nd8 18.Nc5 Qc6 19.a4 b6 20.Bb5 Qd6 21.Ne6 Ne6 1–0. Klaus Behrmann – Alissa, ChessWorld.net, 2003.

6.e3 Be6 7.Be2 Ne7 8.a3 Bd6 9.Na5 Qc8 10.Nc4 Nbc6 11.Nc3 a6 12.Ne4 Qd7? (better is 12...Qd8=) 13.Ned6+– (13.Ncd6?! cd6 14.Bh5 Kd8=) 13...cd6 14.Nb6 Qd8 15.Na8 Qa8 16.c4 0–0 17.0–0 Qc8 18.Rb1 Na5 19.d3 d5 20.Bc3 Qc7 21.Ba5 Qa5 22.Rb7 Qa3 23.Qc1 Qc1 24.Rc1 Nf5 25.Rb6 Bf7 26.c5 Rc8 27.Bg4 (27.Bg4 Bg6 28.Ra6+–) 1–0. aspasio (2790) – gsmelt (2410), net–chess.com, 2013.

6.e3 Ne7 7.Qh5 g6 8.Qh4 Nec6 9.Bd3 =.

6.e3 Ne7 7.Qh5 Ng6 8.Bd3 Kf7 (8...0–0 9.Bg6 hg6 10.Qg6+=) 9.0–0+/– Nc6 10.f4 ef4 11.ef4 Kg8 12.Bc4 Kf8 13.Nc3 Nd4 14.Nd5 Nc6? (better is 14...Nc2 15.Rac1 c6 16.Nf6 gf6+/–) 15.Nb4+– Nb4 16.f5 Ne5 (16...b5 17.Bb5 (17.fg6?! bc4 18.Rf6 gf6 19.Qh6 Kg8+–) 17...Ne7 18.Nd4+–) 17.Be5 (17...Qe8 18.Qe8 Ke8 19.Bc7+–) 1–0. pierre (2065) – Aksenoff, internet, 2006.

6.e3 Ne7 7.Qh5 Ng6 8.f4 ef4+= 9.ef4 Qe7 10.Be2 0–0 11.0–0 Re8 (11...Qe4!? 12.Bd3 Nf4 13.Be4 Nh5+=) 12.Bc4+= Kh8 13.Nc3 Bc3 14.Bc3 Nc6 15.f5 Nge5 16.Rae1 Bd7 17.Re3 a5?? (better is 17...Nc4 18.Re7 Re7+/–) 18.Qh7!! Kh7 (18...Kh7 19.Rh3 Mate attack) 19.Rh3 1–0. Fournier,Frederic (1980) – Skellbop5, Active, 2011.

6.e3 Bg4 7.Be2 Bf3 (7...Ne7!?=) 8.Bf3+= c6 9.0–0 Ne7 10.d4 Nf5 (10...Nd7!?+=) 11.de5+/– fe5 12.Qd8 Kd8 13.Be5 Nd7 14.Bb2 Kc7 (14...Re8 15.Rd1+/–) 15.Nc3 (15.Bg4!? Nd6+–) 15...Bc3 16.Bc3 Rac8 (better is 16...Rhe8!?+/–) 17.Bg4+– Rhf8 18.Bf5 Rf5 19.Bg7 Rg8 20.Bh6 Nf6 21.Bf4 Kb6 22.Rab1 Ka6 23.Rb3 b5 24.g3 Ne4 25.Rd1 h5 26.Kg2 h4 27.Rd4 Nc5 28.Ra3 Kb6 29.Rd1 a6 30.Rc1 b4 31.e4?? ba3?? 32.ef5 hg3 33.hg3 Ne4 34.Be3 c5 35.Rb1 Kc6 36.Rb3 c4 37.Ra3 c3 38.Ra6 Kd5 39.Ra5 Kc4 40.a4 Nd6 41.Ra7 Nf5 42.a5 Nd6 43.a6 Nb5 44.Rf7 Ra8 45.a7 Kd5 46.Rb7 Kc6 47.Rb8 Ra7 48.Ba7 Na7 49.Rb3 Nb5 50.Rb5! Kb5 51.Kf3 Kc4 52.Ke3 Kb4 53.Kd3 Kc5 54.Kc3 Kd5 55.f4 Ke4 56.Kb4 Kf3 57.f5 Kg3 58.f6 Kf4 59.f7 Ke5 60.f8Q Kd5 61.Qf5 Kd6 62.Kc4 Ke7 63.Qg6 Kf8 64.Kd5 Ke7 65.Qe6 Kf8 66.Qd7 Kg8 67.Ke6 Kh8 68.Kf6 Kg8 69.Qg7 1–0. Fournier,Frederic (1615) – wolfperu, Active, 2007.

6.e4 Nd7 7.a3 Bd6 8.Qh5 (8.Nc3 Ne7 9.Qh5 Ng6 10.Nb5 Be7 11.Bd3 0–0 12.g3 Nb6 13.0–0; 8.Be2 Ne7 9.0–0 0–0 10.Nc3 Nb6 11.d4 ed4 12.Nd4 Be5 13.Nf3; 8.d4 Ne7 9.Nc3 ed4 10.Nd4 Ne5 11.Be2 0–0 12.0–0 Bd7 13.Kh1) 8...g6 9.Qf3 Nh6 10.Nc3 0–0 11.Bd3 Nc5 12.Bc4 Nf7 13.Nc5.

6.e4 Nd7 7.Nc3 A) 7...Nb6 8.a3 (8.d4 Nh6 9.a3 Bd6 10.Qh5 Nf7 11.Be2 0–0 12.0–0 g6 13.Qh4; 8.Qh5 g6 9.Qh4 Kf7 10.0–0–0 Bd7 11.d4 Ne7 12.a3 Bd6 13.Nc5) 8...Bd6 9.d4 Ne7 10.de5 fe5 11.Qf3 Nc6 12.Nd5 Qh4 13.Be2; B) 7...Ne7 8.Qh5 g6 9.Qh6 Nc5 10.Nc5 Bc5 11.Na4 Qd6 12.Qg7 Rf8 13.Bb5.

6.e4 Nd7 7.Qh5 g6 8.Qf3 Nh6 9.Nc3 Nb6 10.a3 Be7 11.Na5 0–0 12.Bd3 Be6 13.Nb7.

6.e4 Be6 7.a3 A) 7...Be7 8.d4 (8.Nc3 Nc6 9.Na4 Nh6 10.Nac5 Qc8 11.Bd3 Bf7 12.0–0 0–0 13.f4) 8...Nh6 9.d5 Bf7 10.Nc3 0–0 11.Be2 Na6 12.0–0 Nc5 13.Bc1; B) 7...Bd6 8.Na5 Qc8 9.Bb5 Kf7 10.Nc3 Ne7 11.0–0 Nbc6 12.Nb3 Re8 13.Qf3.

6.e4 Be6 7.Nc3 Nc6 (7...Ne7 8.a3 Bc3 9.Bc3 0–0 10.Nc5 Qd6 11.Ne6 Qe6 12.Qe2 Nbc6 13.Qc4) 8.Bb5 (8.a3 Bd6 9.Qh5 g6 10.Qf3 Nh6 11.Bd3 0–0 12.Nd5 a5 13.h3; 8.Qh5 g6 9.Qf3 Nh6 10.Nd5 0–0 11.Bc4 a5 12.Qe2 Bf7 13.0–0) 8...Nge7 9.a3 Bd6 10.d4 Bb3 11.de5 Be6 12.ed6 Qd6 13.Qd6.

6.e4 Be6 7.Qh5 g6 8.Qf3 Nh6 9.Nc3 0–0 10.Nd5 a5 11.Nb4 ab4 12.Nc5 Qe7 13.Ne6.

6.e4 Ne7 A) 7.Qh5 Ng6 (7...Kf8 8.Bc4 Qe8 9.Qe8 Ke8 10.Nc3 a6 11.d4 Nbc6 12.a3 Bd6 13.d5) 8.a3 (8.Bc4 Nd7 9.Bc3 Bc3 10.dc3 Nb6 11.N1d2 Nc4 12.Nc4 0–0 13.0–0) 8...Be7 9.d4 Be6 10.d5 Bf7 11.Bc4 0–0 12.0–0 Nf4 13.Qf3; B) 7.a3 Bd6 8.Qh5 (8.Nc3 Be6 9.d4 Nd7 10.d5 Bf7 11.Be2 0–0 12.0–0 Nc5 13.Qd2) 8...Kf8 9.Nc3 Be6 10.Be2 Nbc6 11.0–0 Qe8 12.Qe8 Ke8 13.Nb5.

6.e4 Nh6 7.a3 (7.Bc4 Nd7 8.Qh5 (8.Nc3 Nb6 9.Qh5 Kf8 10.Be2 Be6 11.a3 Be7 12.d3 Nf7 13.0–0; 8.0–0 Nb6 9.Qh5 Kf8 10.Be2 Be6 11.f4 Na4 12.fe5 Nb2 13.ef6; 8.a3 Be7 9.Nc3 Nb6 10.Qh5 Kf8 11.Be2 Be6 12.d3 Nf7 13.0–0; 8.Bc3 Bd6 9.Qh5 Kf8 10.d4 Nb6 11.Be2 Qe8 12.Qh4 Bd7 13.de5) 8...Kf8 9.0–0 a5 10.c3 Be7 11.d4 a4 12.N3d2 Nb6 13.Be2) 7...Be7 (7...Bd6 8.Nc3 (8.Qh5 Kf8 9.Be2 Qe8 10.Qh4 a5 11.a4 Nc6 12.Nc3 Nb4 13.Rc1; 8.Bc4 Nd7 9.Qh5 Kf8 10.Nc3 Nb6 11.Be2 Qe8 12.Qe8 Ke8 13.0–0) 8...0–0 9.Bc4 Nf7 10.0–0 Nd7 11.d4 Nb6 12.Be2 Bd7 13.Na5) 8.Bc4 (8.Nc3 0–0 9.Bc4 Nf7 10.a4 Nc6 11.0–0 Nb4 12.f4 ef4 13.Rf4) 8...Nf7 (8...Nd7 9.0–0 Nb6 10.Qe2 Nc4 11.Qc4 Qd6 12.Nc3 Be6 13.Nd5) 9.d4 (9.0–0 Nd7 10.Nc3 Nb6 11.Be2 0–0 12.d4 a5 13.d5) 9...Nd6 10.Qh5 (10.N1d2 Nc4 11.Nc4 ed4 12.Nd4 0–0 13.Qe2) 10...g6 11.Qe2 Nc4 12.Qc4 Nd7 (12...ed4 13.Bd4+/– (13.Nd4 c5 14.Nb3=); 12...b6 13.de5) 13.0–0 (13.de5+=) 13...Nb6 14.Qe2 Na4 15.Ra2 Nb2 16.de5 fe5 17.Qb5 Qd7 (17...Kf8 18.Rb2 Kg7 19.c3= (19.Qe5?? Bf6 20.Qb5 Bb2–+)) 18.Qe5+= 0–0 ½–½. Alissa (2385) – anizandolivia (1935), ChessWorld.net, 2003.

4.e3 de3

5.fe3 e5 6.Bc4 Nh6 (6...Bb4 7.a3 Bd6 8.Nc3+–) 7.0–0 Bb4? (better 7...Nd7!?+–) 8.Ne5+– Qe7 9.Qh5 Kf8? (9...Kd8 10.Nd3 Nd7 11.Nb4 Qb4+–) 10.Nd3 Bd6 (10...Bg4 11.Qg5 Bd6 12.Bf6 gf6 13.Rf6 Ke8 14.Nc3+– (worse 14.Qh6 Nd7 15.Rf2 Rf8+–)) 11.Bf6! Bh2 (11...gf6 12.Qg5 Double attack (12.Qh6 Deflection; 12.Qg5 Decoy; 12.Qh6 Overloading)) 12.Qh2 gf6 13.Qh6 Ke8 14.Rf6 Nc6 (14...Rf8 15.Rf8 Qf8 16.Qh5 Kd8 17.Nc3+–) 15.Rc6 (15.Nc3 Rf8 16.Raf1 Rf6 17.Rf6 Nb4 18.Nb4 Bg4 19.Ncd5 Rd8 20.Ne7 c6 21.Nec6 Kd7 22.Rd6 Kc8 23.Rd8 Kc7 24.Nd5) 15...bc6 16.Qc6 Qd7 17.Qa8 Rf8 18.Qe4 (18.Nc3 Rf5+–) 18...Kd8 19.Ne5 Qe7 20.Nc6 (20.Nc6 Kd7 21.Qe7 Kc6 22.Nc3 Rf5 23.Rb1 a5 24.d4 Rb5 25.Rb5 Be6 26.Qe6) 1–0. GuestCCQD – widelota, freechess.org, 2019.

5.fe3 Bg4 6.Bc4 (6.Be2 Qd6=) 6...Nh6 (6...e5 7.h3 Bh5 8.g4=) 7.0–0 (7.Nc3 e5 8.a3 a5+=) 7...Nd7 (7...e5 8.h3 Bh5 9.c3=) 8.h3+= Bh5 9.Be6 Ne5 (9...c6!?+=) 10.Be5+– fe5 11.Qe2 Qd6 (11...c6 12.Qc4 Qd6 13.b5+–) 12.Qb5+– c6 13.Qb7 Threatening mate: Qxa8 13...Rd8?? (better 13...Rb8 14.Qa7 Bf3 15.Rf3 Rb4+–) 14.Ng5 Bg6 (14...a5 15.b5 Rb8 16.Bd7 Qd7 17.Qb8 Qd8+–) 15.Na3 (15.Qa7?! Qb4 16.a4 Qd6+–) 15...Qd2 (15...Rb8 16.Qa7 Qd8+–) 16.Qc6 (16.Qc6 Rd7 17.Rad1 Qf2 18.Rf2 Bc2 19.Qd7) 1–0. GuestLYRF – GuestTRLV, freechess.org, 2020.

3.Nf3 Nf6

4.a3 Nc6 5.b5 Na5 6.Bd4 (< 6.Nd4 Nc4 7.Bc3 e5+=) 6...c6 7.e3 e6 8.Ne5 Bd6 9.bc6 Nc6 10.Nc6 bc6 11.Qf3 Bd7 12.Bf6 gf6 13.Nc3 Qa5 14.Bb5 (14.Qf6 Be5 15.Qg5 Bc3 16.Qa5 Ba5–/+) 14...Rc8 15.Qf6 cb5?? (better is 15...Rg8 16.Bd3 Rg2 17.Qh8 Ke7 18.Qh7 Rcg8+/–) 16.Qh8+– Ke7 17.Qh7 b4 (17...Be5 18.Qh4 Ke8 19.Qb4+–) 18.Ne4 Qf5 (18...Be5 19.Qh4 Ke8 20.d4 b3 21.c3+–) 19.Qf5 ef5 20.Nd6 Kd6 21.ab4 Rc2 22.h4 Rb2 23.h5 Rb4 24.h6 f4 (24...Rb8 25.h7 Rh8 26.Rh6 f6 27.Rf6 Ke7 28.Rh6+–) 25.h7 fe3 (25...Rb8 26.h8Q Rh8 27.Rh8 fe3 28.de3 Kc5+–) 26.h8Q ed2 27.Kd2 Rb2 1–0. Bonetti,Shane – panacot, ICC, 2002.

4.a3 e5 5.Ne5 Bd6 (5...Be6 6.e3 de3 7.fe3+/–) 6.Bd4+/– Be5 (6...Bb4 7.e3 (7.ab4?! Qd4 8.Ra3 Qb4=) 7...Bd6 8.Bc4+/–) 7.Be5+– Nc6 (7...0–0 8.Bb2+–) 8.Bb2 Bf5 9.e3 Qd6 10.b5 Ne7 11.Bc4 0–0–0 (11...Bg4 12.Be2 Be2 13.Qe2+–) 12.Bf7 Rhf8 13.Bc4 Be6 14.Qe2 Bc4 15.Qc4 Nf5 16.0–0 Rfe8 17.d3 Nd5 (17...h5 18.Qb4+–) 18.e4 (better is 18.Qg4!? g6 19.e4 Nf6 20.Bf6 Qf6+–) 18...Nb6 (18...Nde3 19.fe3 Ne3 20.Qd4 Qd4 21.Bd4 Rd4 22.Rf2+–) 19.Qb4 Qb4 20.ab4 Nd4 21.Bd4 Rd4 22.Ra7 Rb4 23.c4 (23.Na3 Ra4 24.Ra4 Na4+–) 23...Rd8 24.c5 (24.Ra3!? Ra4 25.Rb3 Ra2+–) 24...Nd7 25.Ra8 Nb8 26.Na3 Rd3 27.e5 Ra3?? (better is 27...Rd5 28.f4 Rc5+–) 28.Ra3 Rb5 29.Rc1 (29.e6!? Kd8 30.Ra8 Ke7 31.Rb8 Ke6+–) 29...Nc6 (29...Kd7 30.f4 Ke7 31.Rh3+–) 30.e6 Kd8 31.Rg3 (31.Rd3!? Ke8 32.Rd7 Nd8 33.Rg7 Ne6 34.Rh7 Nc5 35.Rc7 b6+–) 31...g6 32.Rd3 Ke7 (32...Ke8 33.Kf1 b6 34.Rd7 Rc5 35.Rc5 bc5 36.Rh7+–) 33.Re1 Rc5 34.Rd7 Kf6 (34...Ke8 35.Rc7 b6 36.Rh7+–) 35.Rh7 Ne7 (35...g5 36.Rf7 Kg6 37.Rc7 Re5 38.Re5 Ne5+–) 36.Rf7 Kg5 37.f4 Kh6 38.Re7 b5 39.Rd7 b4 (39...Rc4 40.e7 Rc6 41.e8Q g5 42.g4 gf4 43.Qh5) 40.e7 b3 (40...Rc6 41.e8Q g5 42.g4 gf4 43.Qh5) 41.e8Q b2 (41...Kh5 42.Re5 Kg4 43.Qg6 Kf4 44.Qf5) 42.Qh8 1–0. tromar (1840) – comino, GameColony.com, 2002.

4.c3 dc3 5.Nc3 c6 (5...Nc6 6.b5 Nb4 7.Qa4+=) 6.e3+– Bf5 7.Be2 e6 8.b5 Be7 9.0–0 h6 10.Ne5 (10.Nd4!?+–) 10...0–0+= 11.bc6 Nc6 12.Nc6 bc6 13.d3 Rb8 14.Rb1 e5 15.Qc2 Qc7 16.e4 Bh7 (16...Be6 17.Bf3 Rfd8 18.h3=+) 17.Na4 Rfd8 18.Nc5 Rb6 19.Ba3 Rdb8 (19...Bd6 20.Rfc1=) 20.Rb6 (20.Na6 Ra6 21.Rb8 Qb8 22.Be7 Rb6+–) 20...Qb6 (20...Rb6!? 21.Bc1 Nd7+=) 21.Nd7+= Nd7 22.Be7 c5 23.Bg4 Re8 24.Rb1 Qc7 25.Qc3?? (better 25.Bh4+–) 25...Re7–+ 26.Rb5 a6 27.Rb3 (27.Qa5 Qa5 28.Ra5 Nf6–+) 27...Nf6 28.Qb2 (28.h3 Re8–+) 28...Be4 29.Rb8 (29.de4 Ng4 30.Qe2 Nf6 31.Qa6 Rd7–+) 29...Kh7 30.de4 Ng4 31.a4 (31.Rb3–+) 31…Qa5 (31...Qa5 32.Qe2 Qa4–+) 0–1. Darkseid (1845) – DANIELO (1880), ChessWorld.net, 2019.

4.d3 e6 5.a3 c5 6.Nbd2 Nc6 7.bc5 Bc5 8.Nb3 Pawn d4, live or die! 8...Bb6 9.g3 e5 10.Bg2 0–0 11.0–0 a5 (11...Nd5 12.Rc1=+) 12.a4= Be6 13.Rc1 (better 13.c3=) 13...Nb4 (better 13...Nd5!?=) 14.Ne5+– Rc8 15.Bb7?? (15.c4 dc3 16.Rc3 Rc3 17.Bc3 Qc7+–) 15...Rc7?? (better 15...Rc2 16.Nc6 Rc1 17.Qc1 Nc6 18.Bc6 Bb3–/+) 16.Bg2+– Qc8? (better 16...Qd6 17.Nc4! Bc4 18.dc4 Rc4+–) 17.Nd4+– Bd4 18.Bd4 Nc2 (18...Na2 19.Ra1 Rc2+–) 19.Bb6 Rc3 20.Ba5 (20.Qd2!? Bb3+–) 20...Rc5 21.Nf3 (21.Nc6 Rc6 22.Bc6 Nd4+–) 21...Bb3?! (21...Ra5 22.Rc2 Qd7 23.Qd2 Ra4 24.Rfc1+–) 22.Qd2 (better 22.Bb6 Rc3 23.a5+–) 22...Qd7 (22...Ba4 23.Bb6 Rb5+–) 23.Bb4 Nb4 (23...Rc7 24.Bf8 Kf8 25.a5+–) 24.Rc5 Nbd5 (24...Qa4 25.Rb1 Nd7 26.Rc7+–) 25.a5 Nc7 (25...Qa4 26.Rfc1+–) 26.Rfc1 Ne6 27.Ne5 (27.Bh3 Qb7 28.Rc6 Qa7+–) 27...Qd6 28.f4 (better 28.R5c3 Bd5 29.Nc4 Qa6+–) 28...Nc5 29.Qc3 Nd3 30.ed3 Be6 31.Qc6 (31.Bb7!? Bd5 32.Bd5 Nd5+–) 31...Qd4 32.Kh1 h6 (32...Ng4 33.Qb6 Qa4 34.Ng4 Bg4 35.a6+–) 33.Qc3 (33.Qb6!? Qa4 34.a6 Qa3+–) 33...Qe3 34.d4 (34.Qe1 Qa7+–) 34...Qe2 35.Qd3 Qa2 36.a6 Rb8 (36...Ng4 37.Ng4 Bg4 38.Qf1+–) 37.a7! Qa7 (37...Qa7 38.Nc6 Double attack (38.Nc6 Decoy)) 38.Nc6 Qc7 (38...Rc8 39.f5 Ng4+–) 39.Qa3 (better 39.d5 Nd5 40.Bd5+–) 39...Rb3+– 40.Qc5 Qb6 41.Ne7 White prepares d5 (41.Qb6 Rb6 42.d5 Bd7+– (42...Nd5? 43.f5+–)) 41...Kh7 (41...Kf8 42.Ng6 Kg8 43.Qb6 Rb6 44.Ne5+=) 42.Qc2 (42.Qb6 Rb6 43.h3 Ba2+–) 42...g6+= 43.d5?? (better 43.f5 gf5 44.Nf5=) 43...Rb2–/+ 44.Qc6 Bd7 (44...Qe3 45.de6 Ng4–+) 45.Qb6+– Rb6 46.h3 Rd6 (46...Rb2 47.Rc7+–) 47.Rc7 (47.Rc5 Kg7+–) 47...Kg7 48.g4 (48.Rc5 Rb6+–) 48...Ne8 (better 48...Kf8!? 49.Nc8 Nd5=) 49.Ra7 Kf6 (better 49...Nf6 50.Ra8 Rb6+–) 50.Ng8 (better 50.Nc6 Bc6 51.dc6 Rd1 52.Kh2+–) 50...Kg7= 51.Ne7 Kf8 (51...Kf6 52.Nc6 Bc6 53.dc6 Rd1 54.Kh2 Nd6+–) 52.Nc6+– f5 (better 52...Nf6!? 53.Ne5 Be8+–) 53.g5 (53.Ne5 Bb5+–) 53...hg5 54.fg5 (54.Ne5 Bb5 55.fg5 Ng7+–) 54...Ng7 (54...Bc6 55.dc6 Re6 56.Kh2+–) 55.Ne5 Be8 56.h4 Nh5 57.Bf3 Nf4 (57...Ng3 58.Kg2 Ne4 59.Be4 fe4 60.Ra5+–) 58.Ra5 Bf7 (58...Rb6 59.Ra8 Ke7 60.Nc4 Rb1 61.Kh2+–) 59.Nf7 (better 59.Ra8!? Be8 60.Nc4 Rd5 61.Bd5 Nd5+–) 59...Kf7 60.Kh2 Nd3 61.h5 (61.Kg3 Ke7+–) 61...Ne5 (better 61...gh5 62.Bh5 Kg7+–) 62.hg6?? (better 62.Bd1 Nc4 63.Rb5 gh5 64.Bh5 Kf8 65.Kg3+–) 62...Kg6= 63.Be2 Kg5 64.Ra6 (64.Kg3 f4 65.Kf2 Kf5=) 64...Rd5=+ 65.Kg2 f4 66.Ra4 Rd2 67.Kf1 f3 (better 67...Kf5=+) 68.Ba6? (better 68.Bf3 Nf3 69.Rg4 Kh5 70.Rg2=) 68...Ng4–+ 69.Ra1?? (better 69.Ke1 Rb2 70.Ra5 Kf4 71.Ra4 Kg3 72.Ra3–+) 69...Rh2 70.Ra5 Kh4 71.Ke1 Ne3 72.Re5 f2 (72...f2 73.Ke2 f1Q 74.Ke3 Qa6 75.Re4 Kg3 76.Rb4 Qa3 77.Ke4 Qb4 78.Kf5 Qd6 79.Ke4 Re2 80.Kf5 Re5) 0–1. chessgeneral1 – johnewunda (1780), gameknot.com, 2018.

4.Bd4 Nd5 5.c3 Nc6 6.e4 Nf4 7.Bb5 (better is 7.g3!? Nd4 8.cd4+=) 7...Ng2=+ 8.Kf1 Bh3 9.Qe2?? (better is 9.Kg1 Qd6 10.Ne5–/+) 9...Nf4–+ 10.Ke1 Ne2 11.Be2 (11.Bc6 bc6 12.Ke2 Bg4–+) –+. Jan van Dijk – Milan van Dijk, ChessWorld.net, 2003.

4.Bd4 Ne4 5.d3 Nf2?? (better is 5...Ng5 6.Nbd2 Nf3 7.Nf3 Nc6+=) 6.Bf2+– e6 7.a3 Bd6 8.e4 e5 9.Be2 Be6 10.0–0 h6 11.d4 0–0 12.de5 (worse is 12.Ne5 Be5 13.de5 Nc6+–) 12...Be7 13.c4 Nc6 14.Nc3 Qd1 15.Rad1 (worse is 15.Bd1 Bc4 16.Be2 Be2 17.Ne2 a5+–) 15...a6 16.Nd5 Bd8 17.Bg3 Kh8 18.Nd4 Nd4 19.Rd4 c6 20.Ne3 (20.Nf4 Bg5+–) 20...Bb6 21.c5 Ba7 22.Nc4 Rad8 23.Nd6 Rd7 24.Bf2 Bb8 25.Bc4 Bd6 (25...Bc4 26.Nc4 Rd4 27.Bd4+–) 26.ed6 Bg4 (26...Bc4 27.Rc4 Re8 28.Rd4+–) 27.e5 (better is 27.Bh4 Rb8 28.Bf7 g5+–) 27...Be6 28.Be6 fe6 29.Be1 Rf1 30.Kf1 Rf7 31.Ke2 Rd7 32.Rf4 Kg8 33.Kd3 g5 (33...Kh7 34.g4+–) 34.Rf6 Kg7 35.Re6 h5 (35...a5 36.Rf6 ab4 37.e6+–) 36.Re8 Kf7 37.e6 (37.Rh8 g4 38.Ke4 Kg6+–) 37...Ke8 38.ed7 Kd7 39.Ke4 Ke6 40.h4 g4 (40...gh4 41.Kf4 b6 42.Kg5+–) 41.Kf4 Kf6 42.Bc3 Ke6 43.Kg5 Kd7 44.Kh5 Ke6 45.Kg4 1–0. Bossieman – stephenmason11, ChessWorld.net, 2013. (=1.Nf3 d5 2.b4 d4 3.Bb2 Nf6)

4.Bd4 e5 5.Be5 Bb4 6.Bc3 +=.

4.Bd4 e6 (--> 3.Nf3 e6 4.Bd4 Nf6).

4.Bd4 Ng4 5.e3 (5.h3 Nf6+–) 5...e5 (5...Nd7 6.h3 e5 7.Bc3+–) 6.Ne5 Ne5 7.Be5 Bb4 (7...Nc6!? 8.Bb5 Qd5 9.Bc6 Qc6+–) 8.Bg7+– Rg8 9.Bb2 (9.Bc3 Bg4 10.Qc1 Bc5+–) 9...Bf5 (9...Bg4 10.f3 Be6 11.g3+–) 10.Qf3 Bd2?? (10...Qc8+–) 11.Nd2 Bc2 (11...Be6 12.Qb7 Bd5 13.Qb5 c6 14.Qd3+–) 12.Bc4 (12.Rc1 Bg6 13.Qb7 Nd7+–) 12...Bg6 13.Qb7 Nd7 14.Qc6 Rb8 15.Bd4 Bf5 (15...a5 16.Nb3+–) 16.Ba7 Rb1 (16...Rc8+–) 17.Nb1 Bb1 (17...Rg6 18.Qf3 Be6 19.Nd2+–) 18.Rb1 Qf6 19.Rb8 Ke7 20.Qe4 Ne5 21.Bc5 Kd7 22.Qd5 Qd6 23.Bb5 Ke7 (23...Nc6 24.Bc6 Ke7 25.Qe5) 24.Qe5 1–0. DEFFM – GuestSQGK, freechess.org, 2018.

4.g3 e6 5.a3 c5 6.bc5 Bc5 7.Bg2 0–0 8.0–0 Ng4 (8...Nc6 9.e3=+) 9.d3 (9.e3 d3=) 9...Qf6 (9...Qb6 10.Bc1=+) 10.h3 Ne5 (10...Nh6 11.c3 e5 12.cd4 ed4 13.e3=) 11.Nd4 Bd4 (11...Nec6 12.Nc6 Qb2 13.Nb8 Qa1–/+ (< 13...Rb8 14.Nd2+=)) 12.Bd4+/– Nf3 13.Bf3 Qd4 14.Nd2 Nc6 15.Nb3 (15.e3 Qc3+/–) 15...Qf6 16.Bg2 Nd4 (16...e5 17.c4+/–) 17.Nd4 Qd4 18.c4 Rd8 19.Rb1 Rb8 20.Qc2 e5 21.Rfd1 Bf5 22.Rb7 e4?? (better is 22...Rb7 23.Bb7 Bh3+/–) 23.Rb8+– ed3 24.Rd8 Qd8 25.ed3 Qd4 26.Qe2 g6 27.Qe3 Qb2 28.d4 Bc2 29.Rc1 Bb3 30.c5 Qa3 31.Rb1 (31...a5 32.Qb3 Qb3 33.Rb3+–) 1–0. onurtasan – juancabeta, internet, 2007.

4.Bd4 Nc6

5.Bc3 e5 6.Be5? Ne5 7.Ne5 Qd4 (7...Bb4?! 8.e3=) 8.Nf7 Kf7 –+ (8...Qa1?! 9.Nh8 Qa2 10.e4 =+).

5.Bc3 e5 6.Ne5 Nb4 7.e4 Ne4 8.Qf3 +=.

5.Bc3 e6 6.b5 Nb4 7.e3 Be7 (7...Bd6 8.a3 Nbd5 9.Bb2+–) 8.Bc4 (8.a3 Nbd5+–) 8...0–0+= 9.0–0 Nbd5 (9...Ne4 10.a3 Nd5 11.Bd4+–) 10.Bb2 (10.Bd4 Qd6+–) 10...Nb6 (10...Qd6 11.d3 Nb6 12.Nbd2+–) 11.Bb3 a6 12.a4 ab5 13.ab5 Ra1 14.Ba1 Bd7 15.c4 Qa8 (15...c6 16.bc6 Bc6 17.Nc3+–) 16.Nc3 c6 17.Ne5 cb5 (17...Rc8 18.Qe2+–) 18.Nd7+– Nbd7 19.cb5 (19.Nb5!? b6+–) 19...b6 (19...Rc8 20.f4+–) 20.d4 Bb4 21.Qd3 Bc3 (21...Rc8 22.Rb1+–) 22.Bc3+– Ne4 (22...Rd8 23.Ra1 Qb7 24.Qe2+–) 23.Bc2 Ndf6 24.Bb4 Rc8? (24...Rd8+–) 25.f3 Nd6 (25...Nd5 26.Qe4 Nb4 27.Qh7 Kf8+–) 26.Bd6 Qa2 27.Rc1 Qd5 (27...g6 28.e4+–) 28.Be5 (28.Be5 Qd7 29.Bf6 gf6 30.Qh7 Kf8 31.Ra1+–) 1–0. DEFFM – GuestFWWL, freechess.org, 2019.

5.Bc3 Bf5 6.e3 (6.b5 Nb8+/–) 6...Ne4 (6...e5 7.Ne5 Nb4 8.d3+=) 7.b5 Nb8 8.Bb2 e6 9.Bd3 c6 10.Nd4 Qh4 (10...Bg6 11.Qf3 Nd6 12.bc6 Nc6 13.Bg6 hg6 14.Nc6+/–) 11.0–0 (11.Qf3!? Ng5 12.Qf4 Qf4 13.ef4 Bd3 14.cd3+– (14.fg5?! Bb5 15.d3 Ba6=)) 11...Bd6 12.f4 g5?? (better is 12...Bg6+/–) 13.Nf5+– Qf2 (13...ef5 14.Bh8 gf4+–) 14.Rf2 Nf2 15.Nd6 Ke7 16.Kf2 Kd6 17.Be5 Ke7 18.Bh8 Nd7 19.Bc3 gf4 20.ef4 h6 21.Qh5 cb5 22.Bb4 Ke8 23.Bb5 Rd8 (23...a5 24.Ba3 Kd8 25.Qf7 Kc7 26.Qd7 Kb6 27.Qd6 Kb5 28.Nc3 Kc4 29.Qc5) 24.Qh6 a6 (24...e5 25.Qf8) 25.Qh8 (25.Qf8) 1–0. Klaus Behrmann – Jan van Dijk, ChessWorld.net, 2003.

5.Bf6 ef6 6.c3 Bd6 7.g3 0–0 8.Bg2 Re8 9.0–0+= Ne7 10.d4 c6 11.Nbd2 a5 12.ba5 Nd5 13.Qb3 Re2 14.c4 Nc7 15.c5 Bf8 16.Nc4 Be6 17.a4 g6 18.Rab1 Ra7 19.Rfd1 Bf5 20.Qb6 Qb8 21.Rb2 Nd5 22.Qb3 Re8 23.Re1 Qd8 Exerts pressure on the isolated pawn 24.Rbe2 Re2 25.Re2 Be6 26.Re1 Bg7 27.Qb2 Bh6 28.Bf1 Qc7 29.Nfd2 f5 30.Nf3 Ra8 31.Nfe5 f4 32.Bd3 Bf8 33.Qd2 fg3 34.hg3 Rc8 35.Be4 Nf6 36.Bf3 Rd8 37.Qc3 Nd5 38.Qb2 Bg7 39.Qd2 Nf6 (39...Ra8!?+–) 40.Nd6 Rd6? (better 40...Nd5!?+–) 41.cd6+– Qd6 42.Qb2 Qc7 (42...Bc8 43.Qb3 Qe7 44.a6 ba6 45.Qb8+–) 43.Qb6 Qe7 (43...Qb6 44.ab6 Nd5 45.Bd5 Bd5 46.a5+–) 44.Rb1 Bd5 (44...Bc8+–) 45.Qb7 Qb7 46.Rb7 Bf3 47.Nf3 Nd5 48.a6 Bd4 49.Nd4 c5 (49...Kg7 50.a7 Nb4 51.a8Q c5 52.Qe8 Kh6 53.Qf7 cd4 54.Qf6 d3 55.Qh4) 50.a7 Nb6 (50...Kg7 51.a8Q Nc3 52.Qe8 Ne2 53.Qe2 h5 54.Qe5 Kh6 55.Ne6 fe6 56.f4 c4 57.Qg5) 51.Rb6 c4 (51...h5 52.a8Q Kg7 53.Ne6 fe6 54.Qe8 c4 55.Re6 g5 56.Rg6 Kh7 57.Qg8) 52.a8Q Kg7 53.Qd8 (53.Qd8 c3 54.Qf6 Kh6 55.g4 c2 56.Nf5) 1–0. Dalia – Magadan, internet, 2019.

4.Bd4 Bg4

5.e3 e6 6.a3 Nc6 7.Bb2 (7.Bb5 Bd6+/–) 7...Bd6 8.Be2 0–0 9.c4 Bf3 (9...Bf5!?+=) 10.Bf3+– Be5? (better is 10...Rb8+–) 11.d4 Bd6 12.0–0 White prepares c5 (12.c5!? Be7 13.b5 Na5+–) 12...Rb8 (12...Qe8 13.Nc3+–) 13.Nd2 (better is 13.Qa4 Qc8 14.Nc3+–) 13...e5? (13...Qd7 14.d5 Ne5 15.Be2+–) 14.c5 (14.Bc6!? ed4 15.Ba4 de3 16.fe3 Qe7 17.Bf6 Qe3 18.Kh1 gf6+–) 14...Be7 (14...e4 15.cd6 (15.Be4?! Bh2 16.Kh2 Ne4+/–) 15...ef3 16.dc7 Qc7 17.Qf3+–) 15.de5 Nd5 (15...Ne8 16.Nc4+–) 16.Nb3 f6 (16...Ne3 17.fe3 Bg5+–) 17.Qd5 Qd5 18.Bd5 Kh8 19.Bc6 bc6 20.ef6 Bf6 21.Bf6 Rf6 22.Nd4 Rd8 23.Rad1 h5 24.Rd3 g5 25.Rfd1 Re8 26.Nf3 g4 27.Nh4 Ref8 28.R1d2 Kh7 29.f3 gf3 30.Nf3 Kg6 31.Rd7 1–0. Fournier,Frederic (1770) – AldoPedroPoy, Active, 2006.

5.e3 Bf3 6.gf3?! e5 7.Be5 Bb4+=.

5.e3 Bf3 6.Qf3+– c6 7.Bf6 ef6 8.a3+–.

5.e3 Bf3 6.Qf3+– Qd5 7.Qg3 (7.Qd5 Nd5 8.a3 Nd7+–) 7...Nc6+– 8.Nc3 (8.Qc7 Nd4 9.ed4 Qe4 10.Kd1 Rd8+–) 8...Qd6 (8...Qd7 9.Bb5+–) 9.Qd6+– cd6 10.Bf6 gf6 11.b5 Nb4? (better 11...Na5+–) 12.Rb1 Nc2 (12...a5 13.ba6! Na6 14.Rb7+–) 13.Kd1 Na3 (13...Ne3 14.fe3 e6 15.e4+–) 14.Rb3 e5 (14...d5 15.Ra3 e6 16.Ra4+–) 15.Ra3 d5 16.Ra4 Bc5 (16...0–0–0 17.Ra7 Kc7 18.Ra4+–) 17.Nd5 (better 17.d4 Bb6 18.Nd5 Rd8 19.Nb6 ab6+–) 17...Be7 (17...Rd8 18.Nf6 Ke7 19.Ng4+–) 18.Nc7 Kd7 19.Na8 Ra8 20.Bc4 Ke8 (20...Kc7 21.Bf7 Kb6 22.Rh4+–) 21.Bd5 1–0. DEFFM – GuestZVSM, freechess.org, 2018.

5.e3 Bf3 6.Qf3+– e6 7.Qb7 Bb4?? (7...Nbd7 8.a3 a5+–) 8.Qa8 Ne4 (8...0–0+–) 9.Qe4 0–0 10.Bd3 Qd6 11.Qh7 1–0. GuestLZLP – GuestZKDL, freechess.org, 2020.

4.Nd4 e5=

5.Nb3 Bb4 6.Be5 Nc6 7.Bc3 =.

5.Nb3 Bb4 6.Be5 Nc6 7.c3 (7.Bc3 0–0 (7...Be7 8.e3 0–0 9.Qf3 Be6 10.Bd3 Qd5 11.Qg3 Nh5 12.Qc7 Qg2) 8.e3 Bd6 9.Bb5 Bd7 10.Bc4 Ne4 11.Qh5 Nc3 12.Nc3 g6; 7.Bb2 Bg4 8.h3 Bf5 9.e3 0–0 10.Be2 a5 11.0–0 Bd6 12.a4 Re8) 7...Ne5 8.cb4 Be6 (8...Qe7 9.Qc2= Qb4 10.Qc7 Nc6 11.Nc3 Be6 12.e3 Nd5) 9.Nc3 (9.e3 Qe7+= 10.Nc5 0–0 11.d4 Ned7 12.Bd3 Nc5) 9...a6 (9...Bb3 10.Qb3 0–0 11.e3+= Nd3 12.Bd3 Qd3; 9...0–0 10.Nc5 Qe7 11.d4 Ned7 12.Ne6 fe6) 10.Nc5+/– Bd5 (10...0–0 11.Nb7 (11.e3 Bg4 12.Qb3 b6) 11...Qb8 12.Nc5 Qb4 13.Ne6 fe6 14.Rb1+/–) 11.e4 Bc6 (11...Qe7 12.d4 Ned7 13.f3 Nc5 14.bc5+/– (worse is 14.dc5 Rd8+=)) 12.d4+– Ned7 (12...Ng6!? 13.d5 Bd7+–) 13.d5 Bb5 14.Bb5 (worse is 14.Nb5 Nc5 15.e5 ab5 16.ef6 Qf6 17.Bb5 Nd7+–) 14...ab5 15.Nb7 Qb8 16.Na5 0–0 (16...Qb6 17.Qd3+–) 17.0–0 h5 (17...Qb6 18.Qc2+–) 18.Nc6 Qe8 (18...Qb6 19.e5 Ng4 20.h3 Nde5 21.hg4 Nc6 22.dc6 Qc6 23.Rc1+–) 19.Qd4 (19.e5 Ng4 20.Nb5 Nde5 21.Nc7 Qd7 22.Na8 Nc6 23.dc6 Qc6+–) 19...Ng4 (19...Nb8 20.Nb8 Rb8 21.a4+–) 20.f3 (20.Nb5 Nde5 21.Rfc1 Nc6 22.Rc6 Rd8+–) 20...Nge5 21.Nb5 Nc6 22.dc6 Qe5 (22...Qb8 23.cd7 (worse is 23.Qd7 Qb5 24.Qc7 Qb4+–) 23...Qb5 24.a4+–) 23.Qd5 (better is 23.Qe5 Ne5 24.Nc7 Ra7+–) 23...Qe7 (23...Rfb8 24.a4 Qd5 25.ed5+–) 24.cd7 Qb4 (24...Rfd8 25.Rfd1 Qb4 26.Qc6+–) 25.Nd4 Rfd8 26.Nc6 Qb6 (26...Qd6 27.Qd6 cd6 28.Nd8 Rd8 29.Rfd1 Rd7 30.Rd5+–) 27.Kh1 Rf8 (27...h4+–) 28.Nd8 (better is 28.d8Q Rad8 (28...Rfd8?? 29.Nd8 Ra5 30.Qf7 Kh8 31.Ne6+–) 29.Nd8 Qf6+–) 28...Qf6?? (28...Rfd8 29.Rfb1 Qd6+–) 29.Qa8 Kh7 (29...Rd8 30.Qc8! Qe7 31.Rfd1+–) 30.Qd5 (better is 30.Rab1 Qd8 31.Qd8 Rd8 32.Rfd1+–) 30...Kg8 (30...Qd8 31.Qh5 Kg8 32.Qd5+–) 31.e5 (31.Nc6 h4+–) 31...Qf5 (31...Qd8 32.Rfe1 Qa8 33.Qa8 Ra8+–) 32.Nc6 g5 33.Ne7 Kh7 (33...Kg7 34.Nf5 Kg8 35.d8Q Rd8 36.Qd8 Kh7 37.Qg5 c5 38.Qg7) 34.Nf5 Kg6 (34...c6 35.Qd6 f6 36.Qf8 Kg6 37.Qf6 Kh7 38.Qg7) 35.g4 (35.Qc6 f6 36.d8Q g4 37.Qf8 gf3 38.Qcf6 Kh7 39.Q8g7) 35...h4 (35...hg4 36.Qc6 f6 37.d8Q gf3 38.Qf8 Kf5 39.Qf3 Kg6 40.Qf5 Kh5 41.Qh8) 36.Qc6 Kh7 (36...f6 37.d8Q! h3 38.Qf8 Kh7 39.Qg7) 37.Qh6 Kg8 38.Qg7 1–0. Guido,Angel Pablo (2110) – Tortoza,Carlos, CiF, 2005.

5.Nb3 Bb4 6.Be5 Nbd7 7.Bb2 c5 (better is 7...0–0!?=) 8.e3 0–0 9.Bb5 a6 10.Bd7 Bd7 11.a3 Ba5 (11...c4 12.ab4 cb3 13.c4+/–) 12.0–0 (12.Na5 Qa5 13.Bf6 gf6+–) 12...c4? (12...Bc7 13.Nc5 Bh2 14.Kh1+=) 13.Nd4 (better is 13.Na5!? Qa5 14.Bf6 gf6 15.d3+–) 13...Bc8 14.d3 Qd7 15.dc4 Ne4 16.Nf3 (16.Nb3 Bc7+/–) 16...Qe6 (16...Rd8 17.Qd7 Bd7 18.Nd4+/–) 17.Nbd2 Nd2 18.Nd2 Qg6 19.Nf3 Bh3 20.Nh4 Qg5 21.g3?? (better is 21.Qd4 Bd8 22.Qe5 Qe5 23.Be5 Bh4 24.gh3+/–) 21...Bf1–/+ 22.Qf1 Rfe8 23.f4 Qg4 24.Bd4 Rad8 25.Qf3 Qc8 26.Qh5 (26.c5 Bd2=+) 26...Rd4 (better is 26...Bd2!? 27.Nf5 Be3 (< 27...Qc4 28.Bg7 Rd6 29.Nd6 Be3 30.Kg2 Qc6 31.Qf3 Qd6 32.Be5+/–) 28.Be3 g6 29.Nh6 Kg7 30.Nf5 Qf5 31.Qf5 gf5–/+) 27.ed4= Qc4 28.Nf3 (28.Qc5!? Rc8 29.Qc4 Rc4 30.Rd1=) 28...Bb6 29.Rb1 (29.Rd1!? Qc2 30.Rd2=+) 29...Bd4–/+ (30.Nd4 Qd4 31.Kh1 Qe4 32.Kg1 Qc2–+) 0–1. bashful – THEDAWG, Live Game Caissa's Web, 2004.

5.Nb3 e4 6.a3 Bf5 7.d3 a6 8.e3 Nc6 9.N1d2 Bd6 (9...Bg6 10.de4 Ne4 11.Bd3 Nd2 12.Qd2+/– (< 12.Nd2 Bd3 13.cd3 Qd3+=)) 10.de4 Be4?? (better is 10...Ne4 11.Bg7 Rg8+/–) 11.Bf6 +–. Alissa – Axel van Dijk, ChessWorld.net, 2003.

5.Nf3 e4+= 6.Nd4 Bb4 7.e3 0–0 8.Be2 c5 (8...Be7 9.0–0+=) 9.Nb3= Be6 10.a3 Bb3 11.ab4 Be6 12.bc5 Nc6 13.0–0 a6 14.Nc3 Qc7 15.f3 Nd7 (better is 15...ef3!? 16.Rf3 Ne5+/–) 16.Ne4 Nce5 17.d4 Ng6? (better is 17...Nc4 18.Bc4 Bc4+–) 18.d5 Bf5 19.Ba3 (better is 19.Ng3 Bc2 20.Qc2 Qc5 21.Qc5 Nc5 22.Ba3+–) 19...Be4 20.fe4 Nge5? (20...Nc5 21.Bh5+/–) 21.d6 (better is 21.c6 bc6 22.Bf8 Rf8 23.d6+–) 21...Qc6 22.c4 Qe4 23.Qd4 Qg6 24.Bf3 Nf3 25.Rf3 Rfc8 26.Rg3 Qf6 27.Qf6 Nf6 28.Bb2 Nh5 29.Rg5 g6 30.Rd1 Ng7 31.d7 Rd8 32.Rgd5 Ne6 33.Rd6 Nc5 34.Bf6 Ne4 35.Bd8 Nd6 36.Bc7 (36.Bc7 Nc4 37.d8R Rd8 38.Rd8 Kg7 39.Kf2+–; 36.Rd6?! Rd8 37.c5 Kf8+=) 1–0. Neumann,Frank (1650) – Baer,Cy (1895), RSX7D – Oldenburg–1, 2007.

4.e3 de3

5.de3 Qd1

6.Kd1 Nc6 7.Nc3 (7.b5 Nb4 8.Bf6 ef6 9.c3 Nd5 10.c4 Nb6 11.Kc2; 7.c3 Bg4 8.Nbd2 0–0–0 9.Ke1 a6 10.Nd4 Bd7 11.N2f3; 7.Bb5 Bd7 8.Nbd2 Nb4 9.Bd7 Nd7 10.a3 Nd5 11.c4) 7...Bf5 8.Bd3 Bd3 9.cd3 Nb4 10.Kd2 Rd8 11.Ne5.

6.Kd1 g6 7.Nc3+= Bg7 (7...Be6 8.Nb5 Na6 9.Bd3 Bg7 10.a3 0–0 11.Bd4) 8.Nd5 Kd8 (8...Nd5 9.Bg7 Rg8 10.Be5= (10.e4 Bg4 11.ed5) 10...Nc6 11.Bb5) 9.Be5 (better is 9.Ng5!? Nd5 10.Bg7+/– (10.Nf7 Ke8 11.Bg7 Rg8–/+) 10...Rg8 11.Bb2) 9...Nd5 (9...Nc6 worse is 10.Nc7 (10.Bc7 Kd7 11.Ne5 Ke8 12.Nf6 Bf6 13.f4=) 10...Rb8 (10...Ne5 11.Na8) 11.Bc3–+ –1.57/9 (11.Bb2 Kc7–/+)) 10.Bg7 Re8 (10...Rg8 11.Bb2+=) 11.b5 (11.Bc4 Be6 12.Kc1 Rg8+/–) 11...f6 (11...Bg4 12.Be2 f6 13.h3 Nc3 14.Kd2 Ne4 15.Ke1+=) 12.Bd3 (12.Ke1 Nb4 13.Rd1 Bd7+/–) 12...Bd7 (12...a6 13.Bc4 Rg8 14.Bh6=) 13.e4 (13.c4 Nc3 14.Kd2 Na4+=) 13...Nc3 (13...Nf4 14.e5=) 14.Kc1 (14.Kd2 Nb5 15.c4 Nd6=) 14...Bb5 (14...Rg8 15.Bh6 Bb5 16.Bd2 Bd3 17.cd3+=) 15.Bb5 (15.Kd2 Bd3 16.cd3 Na4=) 15...Nb5+= 16.Rd1 (16.e5 Nd7+=) 16...Nd7 17.Rb1? (17.e5 Nc3 18.Rd3 Ne2 19.Kb2 Nf4+=) 17...Nd6 (better is 17...Nc3–+) 18.e5+= Nf5 (18...fe5!? 19.Ne5 Rg8 20.Nd7 Kd7+=) 19.ef6 (better is 19.e6 Ng7 20.ed7= (worse is 20.Rd7 Kc8–/+)) 19...Ng7? (better is 19...ef6 20.Bf6 Kc8=) 20.fg7+– Kc8 21.Rb3 Rg8 22.Rbd3 Nc5?? 23.Rd5 b6= 24.Nd4 Kb7 25.Rc5+= bc5 26.Ne6 Kb6 27.Rd7 Rac8 28.f4 Kc6 29.Rd3 Rb8 30.g4 Rb4? 31.a3 Re4 32.Nd8?? Kb6?? 33.Rb3= Ka6 34.Nb7 Rc4 35.Nc5?? Rc5–+ 36.Re3 Rg7 37.c3 Rf7 0–1. Tiedemann,Joern (1940) – Baer,Cy (1930), RSS7E basic–22, 2010.

6.Kd1 Nbd7

7.a3= a5 8.Nc3 c6 9.b5 Nc5 10.Ke1 Bf5 11.Nd4.

7.a3 e6= 8.Nc3 a6 9.Bd3 b5 10.a4 ba4 11.Ra4.

7.Nc3 a6 8.Bd3= e6 9.a3 b5 10.a4 ba4 11.Ra4.

7.Nc3 c6 8.Bc4 e6 9.b5 Bd6 10.Ke2 Nb6 11.Bd3.

7.Nc3 c6 8.Bd3 Nd5 (8...e5!? 9.b5 Rb8= (9...Bd6 10.bc6 bc6 11.Ne4) 10.Ke2 Bb4 11.Ne4; 8...e6 9.b5 Nc5 10.bc6 bc6 11.Ke2) 9.Nd5+= cd5 10.Ke2 (10.c4 dc4 (10...Nb6 11.cd5) 11.Bc4 Nb6 12.Bb5 Bd7 13.Bd7 Kd7+=) 10...f6 (10...e6 11.a3+=; 10...Nb6 11.Ne5) 11.c4 dc4 12.Bc4 e5 13.Rhd1 (13.a3!?+=) 13...Bb4+= 14.a3 Ba5 (better is 14...Be7+=) 15.Rd3?? (15.Rac1 Ke7=) 15...Nc5?? (better is 15...e4 16.Rd5 ef3 17.Kf3 b6–+) 16.Rdd1 (16.Rd5!? Bb6 17.a4=) 16...Be6 17.Be6 Ne6–/+ 18.Nd2 Bd2 19.Rd2 0–0 20.Rd7 Rf7 21.Rf7 Kf7 22.h3 Rc8 23.Kd3 Nc5–+ 24.Ke2 Nb3 25.Rb1 Na5 26.f4 Rc2 27.Kf3 Ke6 28.fe5 fe5 29.g4 b6 30.Ke4 Nc6 31.Kd3 Rh2 32.Ke4 Rh3 33.Rc1 Kd6 34.Rc3?? Rg3–+ 35.Kf5 Ne7 36.Kg5 Rh3 37.Rd3 Ke6 38.a4 h6 0–1. Neumann,Frank (1635) – Baer,Cy (1930), RSLE, 2010.

3.Nf3 Bg4

4.b5 c5 5.c3 dc3 6.Bc3 c4 (better is 6...Nd7!?=) 7.e3 Nf6 8.Bc4 Ne4?? (better is 8...e6+/–) 9.Bf7! Kf7 10.Ne5 Ke8 11.Qg4 (11.Ng4?! Qd3+–) 11...g6 (11...Nc3 12.Nc3 Nd7 13.Qh5 g6 14.Ng6+–) 12.Nf7! Kf7 13.Bh8 Kg8 14.Qe4 Kh8 15.Na3 Bg7 16.Rd1 a5 (16...Nd7 17.Qb4+–) 17.0–0 Nd7 18.d4 Nf6 19.Qd3 (19.Qb7!? Rb8 20.Qf3 Nd5+–) 19...Nh5 20.Nc4 a4 21.Ne5 Be5 22.de5 Ng7 (22...Qc7 23.Qd4 Rc8+–) 23.Qd8 Rd8 24.Rd8 Ne8 25.Re8 Kg7 26.Re7 Kf8 27.Rh7 (27.Rb7 Ke8 28.Rc1 Kd8 29.e6 h6 30.Rd7 Ke8 31.Rc8) 27...a3 (27...Ke8 28.Rc1 Kd8 29.e6 b6 30.Rd7 Ke8 31.Rc8) 28.Rb7 (28.Rc1 Kg8 29.Rb7 Kf8 30.Rc8) 28...g5 (28...Ke8 29.Rc1 Kd8 30.e6 g5 31.Rd7 Ke8 32.Rc8) 29.Rc1 g4 (29...Ke8 30.Rc8) 30.Rc8 1–0. valpa – LADY, HCL–C1762 playchess.de, 2003.

4.Nd4+= a6 5.f3 (5.h3 Bc8+/–) 5...Bh5 6.e4 e5 7.Nf5 Qf6 (7...Nd7 8.d4 Bb4 9.Nd2+/–) 8.a3 (8.d4+/–) 8...g6 (better is 8...Nc6!?+/–) 9.Ne3+– Bg7? (9...Nc6 10.Be2+–) 10.g4 (10.h4 Nc6 11.Nd5 Qd8+–) 10...Bg4 11.Ng4 Qe6 (11...Qh4 12.Nf2+–) 12.Ne3 Nf6 (12...Nc6 13.Nc3+–) 13.h4 (13...Nc6 14.Nc3+–; 13.Nc3 Qe7+–) 1–0. nbh999 – Axel van Dijk, ChessWorld.net, 2003.

4.Nd4 Nf6 5.Nf3 Nbd7 6.h3 Bh5 7.e3 e5 8.Be2 e4 9.Nd4 (9.Ne5 Ne5 10.Be5 Be2 11.Qe2 c6+=) 9...Be2= (9...Bb4? 10.Bh5 0–0 11.0–0+–) 10.Ne2 Bb4 11.a3 Be7 12.0–0 0–0 13.d3 ed3 14.cd3 Re8 15.d4 c6 16.Nd2 Rc8 17.Nf3 Nf8 18.a4 Ng6 19.Ne5 (19.Qb3 Qd5 20.Qd5 cd5=) 19...Bd6 (19...Ne5 20.de5 Ne4 21.Nd4=) 20.f4 (20.Ng6 fg6 21.Ba3 Rc7=) 20...Nd5 21.Qb3 Qh4 (21...Qf6 22.Bc1=) 22.e4 Ndf4?? (better 22...Be5 23.g3 Qh5=) 23.Nf4 (better 23.Qf7 Kh8 24.Nf4 (24.Rf4?! Nf4 25.Qf4 Qf4 26.Nf4 Be5 27.de5 Rcd8+–) 24...Ne5 25.de5 Bc5 26.Kh1+–) 23...Nf4?? (23...Ne5 24.de5 Bc5 25.Kh2 Qe7+–) 24.Qf7 Kh8 25.Qf4 (better 25.Rf4!? Qe7 26.Raf1 Rc7+–) 25...Qh6 (25...Qf4 26.Rf4 Kg8+–) 26.Nf7 (26.Nf7 Kg8 27.Nh6 Kh8 28.Qf7 gh6 29.Qf6 Kg8 30.Qd6 Re4 31.Qg3 Rg4 32.Qg4 Kh8 33.d5) 1–0. BeepBeepImAJeep (2620) – giannistst12 (2210), lichess.org, 2017.

4.Ne5 Bf5= 5.d3 f6=+ 6.Nf3 e5 7.a3 Nc6 8.e4. nbh999 – Milan van Dijk, ChessWorld.net, 2003.

4.Ne5 Bh5 5.g4 Qd5=+ 6.gh5 Qe5 7.e3 Qe4 8.Rg1 c6 9.Bd4+/– e5 10.Bd3 Qd5 11.Bb2 Bb4 12.Qg4+– Be7? 13.Bc4 (13.Bc4 Nf6 14.Qc8 (14.Bd5?! Ng4 15.Rg4 cd5+/–) 14...Qd8 15.Qd8 Kd8 16.Be5+–) 1–0. golly1 – willow27, ChessWorld.net, 2007.

4.Nd4 Nc6

5.Nc6+– bc6 6.Nc3 e5 7.h3 Be6 8.a3 c5 9.Ne4 Qh4 10.Nc5+– Bc5 11.bc5 Qg5 12.h4 Qg6? 13.Be5 (13.Be5 c6 14.d4+–) 1–0. pierre – pepw, internet live, 2010.

5.Nc6 bc6 6.c4 e6 (6...a5 7.ba5 Ra5 8.f3+–) 7.Qa4+– Qd7 (7...Ne7 8.f3 Bh5 9.e4+–) 8.c5 Nf6 9.Bf6 gf6 10.b5 (10.g3 Rd8 11.Qa3 f5+–) 10...cb5? (better 10...e5!? 11.bc6 Qd4 12.Qd4 ed4+–) 11.Qg4+– 1–0. DEFFM – GuestDJTB, freechess.org, 2018.

4.Nd4 e5

5.Nb3 Bb4 6.Be5 Nf6 7.f3 Bf5 8.e4 Be6 9.Nd4 Bc5 (9...Bd6 10.Ne6 fe6 11.Bb2 Ne4 A) < 12.fe4 Qh4 13.g3 Bg3 (13...Qe4 14.Qe2 Qh1 15.Bg7+–) 14.hg3 Qg3 15.Ke2 Rf8–/+; B) 12.g3=) 10.Ne6+/– fe6 11.d4 Bb4 (11...Bd6!?+/–) 12.c3 +–. anizan dolivia – Milan van Dijk, ChessWorld.net, 2003.

5.Nb3 Bd6 6.h3 Bh5 (6...Be6!?+=) 7.g4+– Bg6 8.Bg2 c6 9.a3 (9.Na3 Bb4 10.Be5 Nf6+– (10...Ba3?? 11.Bg7 Nf6 12.Bh8+–)) 9...Qc7 (9...Nf6 10.Nc3+–) 10.c4 Nf6 11.Nc3 Nbd7 (11...h6!?+–) 12.g5+– Nh5 (12...Ng8 13.c5 Bf8 14.d4 ed4 15.Nd4+–) 13.e3 Bd3?? (better 13...h6 14.h4 Qd8+–) 14.Qh5 0–0–0 (14...Bc4 15.Na5 Ba6 16.Rc1+–) 15.c5 Be7 16.Bf1 (better 16.Qf7!? Bg5 17.Qe6 Bf6+–) 16...Bg6 17.Qg4 Kb8 18.a4 (18.Bc4 h6 19.Ne4 Rde8+–) 18...f5 19.Qg2 (19.gf6 gf6 20.Qg2 f5+–) 19...Bf7 20.Na5 e4 21.Bc4 (21.Nc4 Bc4 22.Bc4 a5+–) 21...Bh5 (21...Ne5 22.Bf7 Nf7 23.Ne2 Ng5 24.0–0–0+–) 22.Ne4! fe4 23.Qe4 Bg5 24.Qg2 (24.0–0 Bf6 25.d4 Rhe8+–) 24...Bf6 25.Bf6 gf6 (25...Nf6 26.Qh2+–) 26.Be2 (26.d4 f5+–) 26...Bg6? (26...Rhg8 27.Qe4 Bg6 28.Qe7+–) 27.Nc4 (27.d4!? Rhg8 28.Qf3 Bc2+–) 27...Ne5+– 28.Nd6 Rd6 29.cd6 Qd6 30.b5 Bd3 (30...cb5 31.ab5 Qb4 32.Rd1+–) 31.bc6 (31.f4 Nc4 32.bc6 Be2 33.Qe2 Qc6+–) 31...Be2 (31...Rd8 32.Bd3 (32.cb7? Be2 33.Ke2 Qd3 34.Ke1 Qd2 35.Kf1 Qc3–+) 32...Qd3 33.f4 (33.cb7? Qd2 34.Kf1 Qc3–+) 33...Nc6 34.Qe2+–) 32.Ke2 (better 32.Qg7!? Qc6 33.Qh8 Kc7 34.Qh7 Kb6 35.Rb1 Ka6 36.Qb7 (36.Ke2?! Qf3 37.Ke1 Qh1 38.Ke2 Qf3 39.Ke1 Qh1 40.Ke2 Qf3 41.Ke1 Qh1=) 36...Qb7 37.Rb7+–) 32...Qd3+– 33.Ke1 Nc6 34.Qf1 Qc2 (34...Qd5 35.Rg1 Nd4 36.Qd3 (36.ed4?! Re8 37.Qe2 Re2 38.Ke2 Qe4 39.Kd1 a5=+) 36...Nf3 37.Ke2 Ng1 38.Rg1 Qd3 39.Kd3+–) 35.Qb5 (35.Qe2 Rd8 36.Rg1 Ne5+–) 35...Qe4 (35...Rd8 36.Rg1 Ne5 37.Rg3+–) 36.Rg1 Nd4 37.Qd7 Nf3 (37...Nc2!? 38.Ke2 Na1 39.Ra1 Qc4 40.Kf3 Qc8 41.Qc8 Rc8+–) 38.Ke2+– Ng1 39.Rg1 f5 (39...Qc4 40.d3 Qc2 41.Kf3+–) 40.Rg7 f4? (40...Rc8 41.d3 Qb4 42.Rh7+–) 41.f3 (better 41.Qc7 Ka8 42.f3+–) 41...Qc4 42.Kf2 fe3 43.Ke3 Qb3 44.d3 (44.Ke2!? Qc4 45.Ke1 Qh4 46.Kf1 Qc4 47.Kf2+–) 44...Qb6+= 45.Ke4?? (better 45.Ke2+=) 45...Rd8–+ 46.Qb5 (46.Qd8 Qd8 47.Rh7 Qe8 48.Kf5 Qa4 49.Ke5–+) 46...Qe6 (46...Qd4 47.Kf5 Rf8 48.Rf7 Rf7 49.Kg5 Qg7 50.Kh4 Rf4 51.Kh5 Qg6) 47.Qe5+= Qe5 48.Ke5 Rd3 49.Rf7 Ra3 50.Rf4 Kc7 51.h4 a6 52.h5 b5 53.ab5 ab5 54.h6 Re3 55.Kd4 Ra3 56.Kc5 Rb3?? (better 56...Kd7=) 57.Rf7+– Kd8 58.f4 (better 58.Rh7 Rf3 59.Ra7+–) 58...b4 (better 58...Ke8 59.Rh7 Kf8+–) 59.Rb7?? (59.Rh7 Rh3 60.Kb4 Rh4+–) 59...Rb1?? (59...Rh3 60.Rb4 Rh6 61.Kd5=) 60.Kd6?? (better 60.Rh7 b3 61.Rh8 Kd7 62.Rb8+–) 60...Rd1 (60...Kc8!? 61.Rc7 Kb8=) 61.Ke5 Ke8?? (better 61...Re1 62.Kf6 Rb1 63.Rh7 Rh1+–) 62.Rh7+– b3 (62...Rh1 63.Ke6 Kd8+–) 63.Rb7 Re1 64.Kf6 Rh1 65.h7 Kd8 66.h8Q! Rh8 67.Rb8 Kc7 68.Rh8 b2 69.Rh1 (69.Rh1 Kb6 70.f5 b1R 71.Rb1 Kc6 72.Ke5 Kc5 73.f6 Kc4 74.f7 Kd3 75.f8Q Kc2 76.Qb4 Kd3 77.Rb2 Ke3 78.Qe4) 1–0. combijack (1765) – caperplayer1 (1770), gameknot.com, 2016.

5.Nb3 Nd7 6.a3 Ngf6 7.d4 Bd6 8.Na5 Rb8 9.Nc4 0–0?? (better is 9...e4+/–) 10.de5+– (10.Ne5?! Be6+/–; 10.Nd6?! cd6 11.f3 Bf5+=) 10...Be5 (10...Be7 11.ef6 Bf6 12.Nc3+–) 11.Ne5 (11.Be5?! b5 12.Bd4 bc4 13.Ba7 Rb7+–) 11...Ne5 12.Qd8 Rbd8 13.Be5 Nd5 14.c4 Ne7 (14...Rfe8 15.Bg3 Ne7 16.Nc3+–) 15.Bc7 Rd7 16.Bg3 h6 (16...Rc8 17.Nd2+–) 17.Nc3 +–. anizan dolivia – Axel van Dijk, ChessWorld.net, 2003.

5.Nb3 e4 6.Nc5 (6.a3!?+/–) 6...Bc5+= 7.bc5 f6 (7...Nf6!?+=) 8.Nc3. Alissa – Milan van Dijk, ChessWorld.net, 2003.

5.Nb3 f6 6.a3 Bd6 7.g3 c6+= 8.Bg2 Ne7 9.c4 Bh5 10.0–0 0–0 11.Nc3 Qe8 12.Ne4+– Bc7 13.Nbc5 Bf7. wlittle (2225) – midlander (1955), net–chess.com, 2004.

5.Nf3 e4 6.Nd4 Bb4? 7.Nc6 Nc6 8.Bg7 +–.

5.Nf3 e4 6.Nd4 Nf6 7.f3 Bc8 +=.

5.Nf3 e4 6.Ne5 Be6= 7.e3 Nd7 (7...Nf6 8.a3+=) 8.a3 Ngf6 9.Nd7 Bd7 10.Nc3 c5 11.bc5 Bc5 12.d3 ed3 (12...Qa5 13.de4 Ne4 14.Qd5+=) 13.Bd3+/– Bc6 14.0–0 0–0 15.Ne2 b6 (15...Re8 16.Nd4 Be4 17.Be4 Ne4 18.Qg4+/–) 16.Nd4 (16.Bf5 Re8+/–) 16...Bb7 17.Nf5 Re8 (17...Qd5 18.e4 Qe6 19.Qc1 Ne4 20.Ng7=) 18.Bb5 White gets in control 18...Re6 (18...Rf8 19.Qd8 Rfd8 20.Bd3+/–) 19.Qd8 Rd8 20.Rfd1 Rc8 21.Bc4 (21.Bd3 a6+/–) 21...Re4 (21...Rec6 22.Be2+/–) 22.Bb3 Rg4 23.g3 Rg6 24.Nd6 Bd6 25.Rd6 Bc6 (25...Bf3 26.a4 Kf8 27.a5+–) 26.Rad1+– Kf8 27.Bf6 Rf6 28.Rf6 gf6 29.Rd4 Ke7 30.Rh4 h6 31.Kf1 Bf3 32.Ke1 Rd8 33.Rd4 Rd4 34.ed4 f5 35.c4 Kd6 36.Bc2 Ke6 37.h4 f4 38.gf4 Kd6 39.f5 f6 40.Kd2 Bg2 41.Ke3 Bc6 42.Be4 Bd7 43.Kd2 Be8 44.Kc3 a6 45.Bb7 a5 46.Kd3 Ba4 47.f3 Be8 48.Ba6 Bc6 49.Ke3 Ba4 50.Bb5 Bb3 ½–½. Riepe,Bernhard – Schueller,Rudolf, Meisterschaft, 2005.

5.Nf3 e4 6.Ne5 Bf5 7.b5 Qd5 8.e3+– f6? (better 8...Nh6!?+–) 9.Bc4+– Qc5 10.Bd4 Qb4 11.a3 Qa4 (11...Qe7 12.Nf7 Qf7 13.Bf7 Kf7 14.f3+–) 12.Nc3 fe5 13.Na4 ed4 14.ed4 (14.Bg8 Rg8 15.ed4 Nd7 16.Qh5 g6 17.Qh7 Rg7+–) 14...Bd6 (14...Nf6 15.d3+–) 15.0–0 (15.Bg8 Rg8 16.Qh5 g6 17.Qh7 Be6+–) 15...Nf6 (15...Nd7 16.f3 0–0–0 17.Nc3 ef3 18.Qf3+–) 16.Re1 (16.f3 Nbd7 17.g4 Bg6+–) 16...Nbd7 17.d3 (17.f3 0–0–0 18.g4 Bg6+–) 17...0–0–0 18.de4 Be4 19.Be6 (19.Nc3 Bg6+–) 19...Kb8 (19...Rhe8 20.Bd7 Rd7 21.Nc3+–) 20.Bd7 (20.c4 Rhe8 21.Bf7 Re7+–) 20...Rd7 21.f3 (21.c4 Rhd8+–) 21...Bd5 (21...Bf5 22.c4 Rhd8 23.Qb3+–) 22.Nc5 (22.Qd3 Bf7+–) 22...Rdd8 (22...Bc5 23.dc5 c6 24.Qb1 cb5 25.Qb5+–) 23.c3 (23.Ne4 Bf4+–) 23...Bc4 (23...Rhe8 24.Qc2+–) 24.Ne4 (better 24.Qa4 Bf7+–) 24...Be5 (24...Bb5 25.Qb3 Bc6 26.Nd6 Rd6 27.Re7+–) 25.Nf6 (better 25.Qa4 Ne4 26.Re4 Bh2 27.Kh2 Bd3+–) 25...Bf6 26.a4 (26.Qa4 Bd5+–) 26...Rd7 (26...Rhf8 27.Qb1+–) 27.Qc2 h6 28.Re3 (28.Qg6 Rdd8+–) 28...Rhd8 (28...Bg5 29.Re4+–) 29.Rae1 b6 (29...Bf7 30.a5+–) 30.Re8 Kc8 (30...Rd6 31.Qf5+–) 31.Rd8 (31.Qf5 Bd5+–) 31...Rd8 32.Qf5 (32.Kf2 Kb7+–) 32...Kb7 33.a5! Bb5 (33...ba5 34.Ra1 Decoy) 1–0. GuestRDLG – Aaean, freechess.org, 2017.

5.Nf3 f6 6.b5 Qd7 7.Nc3+– Bb4 8.e4 Bc3 9.Bc3 Ne7 10.h3 Bf3 11.Qf3 0–0 12.Bc4 Kh8 13.Rd1 c5 14.0–0 Qc7 15.a4 f5 16.Be6 Qd6 17.ef5 Nf5 18.Bf5 g6 19.Qb7 Rf5 20.f4 Qb6 21.Qa8 c4 22.Kh1 1–0. pereira – ditzida, internet, 2009.

5.h3 ed4 6.hg4 Bb4 7.Bd4 Qd4=+ 8.c3 Bc3 (8...Qf6 9.g5 Qg5 10.cb4=) 9.Nc3= Qg4 (9...Nc6 10.e3 Qd6 11.Rb1+=) 10.Qb3 Qc8 11.Nd5 Nc6 (11...Ne7!?+=) 12.Qg3+– (12.Qg3 Kf8 13.Nc7+–) 1–0. GuestTGKC – GuestTJRQ, freechess.org, 2018.

5.Nf3 Bf3

6.ef3 Bb4 7.Be5 Qe7 8.Qe2 Nc6?? (better is 8...Kf8+/–) 9.Bg7+– Qe2 (9...Nd4 10.Bd4 (10.Bh8 Ne2 11.Be2 0–0–0–/+) 10...f6 11.Qe4+–) 10.Be2 0–0–0 11.Bh8 f6 (11...Bc5 12.Bb2+–) 12.0–0 (12.Bd3 Rf8+–) 12...Bf8 (12...Ne5 13.Re1+–) 13.Bc4 Be7 14.Bg7 Nd4 15.Bb3 Nf5 (15...c5 16.c3 Ne2 17.Kh1 Nf4+–) 16.Be6 Kb8 17.Bf5 1–0. forsetinn (1695) – coolmtclmr, gameknot.com, 2013.

6.ef3 Bb4 7.Be5 f6 White creates threats along the open e–file 8.Bb2 Qe7 9.Be2 Nc6 10.0–0 0–0–0 11.c3 Bd6 12.d4 Nh6 13.Nd2 Nf5 14.Re1 White is in command 14...Nh4 (14...Qd7 15.Qa4+–) 15.g3 f5 (15...Ng6 16.Bc4 Qf8 17.Qa4+–) 16.f4 (16.gh4 Qh4 17.Nf1 Qg5 18.Kh1 Rhe8+–) 16...Qf6 17.Bc4 g5 (17...Ng6 18.Qa4 Kb8 19.Nf3+–) 18.Re6 Qg7 19.Qh5 Ng6 20.Qg5 Bf4? (20...Rhf8+–) 21.gf4 Rhg8 22.Rg6 (22.Kf1!? Kb8+–) 22...hg6 23.Bg8 Rg8 24.Re1 Qf7 25.c4 Na5 (25...Re8 26.Re8 Qe8 27.d5+–) 26.d5 (better 26.Re7 Qf8 27.d5+–) 26...Rh8 (26...Re8 27.Re8 Qe8+–) 27.Bh8 Qh7 28.Re8 Kd7 29.Qd8 1–0. BeepBeepImAJeep (2735) – msa00001 (1655), lichess.org, 2016.

6.ef3 Bb4 7.f4 f6 8.Bc4 ef4 9.0–0 Ne7 10.Qh5 Kd7 11.a3 Bc5? 12.Qc5 b6 13.Qd4 Kc8 14.Qf4 Nbc6 15.Re1 Na5 16.Ba6 Kd7 17.Qg4 Ke8 18.Qg7 Rg8 19.Qg8 Kd7 20.Qe6 Ke8 21.Bf6 Nac6 22.Qg8 Kd7 23.Qg4 Ke8 24.Bb5 Qd7 25.Qg8 1–0. Fritz 11 – amateur, internet, 2011.

6.ef3 Nc6 7.b5 Nd4 8.Bc4 Nf6 (8...Qf6 9.0–0+/–) 9.0–0 Bd6 10.Bd4 ed4 11.Qe1 (11.Re1 Kf8+/–) 11...Qe7 (11...Be7 12.Qe2+=) 12.Qe7 Ke7 13.Re1 Kf8 14.c3 Re8 (14...Rd8 15.a4+=) 15.Re8+/– Ne8 (15...Ke8 16.cd4 Ke7 17.Bd3+/–) 16.cd4 g6 (16...Be7 17.Nc3+/–) 17.Bd5+– b6 18.Nc3 Nf6 19.Bc6 Kg7 20.g3 Rd8 21.Re1 Bb4 22.d5 h5 23.h4 Bc5 24.a4 Bb4 25.Re2 (25.f4 Kh6+–) 25...Bd6 26.Ne4 Bb4 27.Nf6 Kf6 28.Kg2 Kf5 29.f4 Bd6 (29...Kf6 30.Kf3+–) 30.d4 Kf6 31.Kf3 Kf5 32.Re5! Be5 33.de5 g5 34.hg5 Rh8 35.Bd7 Kg6 36.e6 fe6 (36...f5 37.Ke3 Kg7 38.e7+–) 37.de6 Rh7 (37...Rb8 38.e7 Kf7 39.e8Q Re8 40.Be8 Ke7 41.f5+–) 38.Be8 Kf5 39.Bf7 Rg7 (39...Rh8+–) 40.e7 Rf7 41.e8Q 1–0. weBNimzo (2125) – ziyaddin (1775), ChessWorld.net, 2003.

6.ef3 Qd5 7.a3 Nf6 8.Nc3 Qd4 9.Nb5+– Qb2 10.Nc7 Kd8 11.Na8 Bd6 12.Bc4 e4 13.0–0 ef3 14.Qf3 Qc2 15.Bf7 Rf8 16.Qb7 1–0. Wall,Bill – Guest2606, internet, 2004.

6.ef3 Qd5 7.Bd3 Nf6 8.0–0 h5? (better 8...Nc6 9.b5 Nd4+–) 9.Be5!+– Nc6 (9...Qe5 10.Re1 Pinning) 10.Bf6 gf6 11.Re1 Be7 (11...Kd8 12.Be4 Qd7 13.b5+–) 12.b5 (12.a3 f5+–) 12...Ne5 (12...Nd4 13.Be4 Qb5 14.Nc3+–) 13.Be4 Qd4 (13...Qb5 14.Nc3 Qd7 15.Bb7+–) 14.c3 (worse 14.Bb7 Rb8 15.c3 Qd7+–) 14...Nf3 (14...Qd7 15.d4 Qb5 16.de5 fe5+–) 15.Qf3 Rb8 (15...Qd6+–) 16.cd4 Rg8 17.Bh7 Rg7 18.Qf6 Rh7 (18...Rg2 19.Kg2 Kd8 20.Qe7 Kc8 21.Bf5) 19.Qe7 1–0. Pierre – Playmaster, internet, 2020.

6.ef3 Bd6 7.Qe2 Nd7 (7...Nf6 8.f4 e4 9.Qb5 Nbd7 10.Qb7 Bf4 11.Bb5+–) 8.f4 f6 (8...Qe7 9.fe5 Be5 10.d4+–) 9.fe5 Ne5? (better 9...fe5 10.Qb5 Rb8+–) 10.f4+– Qe7 11.fe5 f5 (11...Be5 12.d4 Bd6+–) 12.ed6 Qe2 13.Be2 cd6 (13...Nf6 14.dc7 Kd7 15.0–0 Kc7 16.Bf6 gf6 17.Rf5+–) 14.Bg7 1–0. GuestTTFR – GuestXGBD, freechess.org, 2020.

6.ef3 Nd7 7.a3 Ngf6 8.Bb5 c6 9.Bc4 b5 10.Bb3 Be7 11.0–0 0–0 12.Nc3 a5 13.ba5 Ra5 14.Ne4 c5 15.Nf6 Bf6 16.c4 b4 17.ab4 Ra1 18.Qa1 cb4 19.Rd1 Nc5 20.Bc2 b3 21.Be4 Bg5? (better is 21...Qd6+=) 22.Be5+– f6 23.Bd5 Kh8 24.Bc3 Qb6 25.Bd4 Rb8 26.Bc5 Qc5 27.Qb2 h6 28.d4 Qe7 29.g3 f5 30.Rd3?? Bf6? 31.Rb3 Rb3 32.Qb3 Bd4 33.Qc2 Qe1 34.Kg2 Qe7 35.Qf5 Qf6 36.Qf6 Bf6 37.f4 g5 38.fg5 Bg5 39.f4 Bf6 40.Kf3 Kg7 41.Ke4 Kg6 42.h3 h5 43.g4 hg4 44.hg4 Be7 45.f5 Kf6 46.Kd4 Bd6 47.c5 Be5 48.Ke4 Ba1 49.c6 Be5 50.Kd3 Bc7 51.Kc4 Kg5 52.Kb5 Kg4 53.f6 Bd6 54.f7 Kf5 55.c7! Bc7 56.f8Q Kg4 57.Kc6 Kg3 58.Qf3 Kh4 59.Kc7 Kg5 60.Be6 Kg6 61.Qf5 Kg7 62.Qf7 Kh6 63.Qg8 Kh5 64.Qg4 Kh6 65.Bf5 (65.Bf7 Kh7 66.Qg6 Kh8 67.Qg8) ½–½. Fournier,Frederic – leonato, Active, 2007.

6.gf3 Bb4 7.Be5 (7.Rg1 Nc6 8.Rg7 Qh4+=) 7...Nf6+= 8.c3 Bd6 9.Qa4 c6 (9...Nc6!? 10.Bf6 Qf6+= (worse 10...gf6 11.Bh3+–)) 10.f4+– Be5 11.fe5 Nfd7 (better 11...Nd5 12.Qa3 Nd7+–) 12.e6 (better 12.d4!?+–) 12...Nc5 (12...fe6 13.Bh3=) 13.Qb4 (13.ef7 Kf7 14.Qf4 Qf6 15.Qf6 gf6+–) 13...Ne6 14.Qb7 Nd7 15.Qc6 0–0 16.Bg2 (16.d4!?+–) 16...Rb8= 17.Qf3?? (better 17.Qd6=) 17...Qb6–+ 18.0–0 Qb2 19.Qd5?? (19.Na3 Qa3 20.Qe3–+) 19...Nf6 20.Qa5 (20.Qf5 Qa1 21.a3 Qa2–+) 20...Qa1 21.Qa7 (21.Na3 Qa2 22.Bc6–+) 21...Rb1 22.a4 (22.h4 Rf1 23.Bf1 Qe1–+) 22...Rf1 (better 22...Nf4!? 23.Qa6 Ng2 24.e3–+) 23.Bf1 Qb2 (23...Qe1!? 24.Qb7–+) 24.Qe3 0–1. GuestMJRN – GuestQBFT, freechess.org, 2017.

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Chessworld.net on behalf of Marek have set up a continuous stream of 1.b4 tournaments.

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    Available lines:
  • 1.b4 (4 players, 1 day/move)
  • 1.b4 (4 players, 10 days/move)
  • 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 (4 players, 3 days/move)
  • 1.b4 e5 2.Bb2 Bb4 3.f4 ef4 4.Bg7 Qh4 5.g3 fg3 6.Bg2 gh2 7.Kf1 hg1Q 8.Kg1 (Kucharkowski-Meybohm gambit, 6 players, 10 days move)
  • 1.b4 e5 2.Bb2 f6 3.e4 Bb4 4.Bc4 (Sokolski gambit, 4 players, 3 days/move)
  • 1.c4 Nf6 2.b4 (English orangutan, 4 players, 3 days/move)
  • 1.e4 c5 2.b4 (Sicilian: Wing gambit, 4 players, 10 days/move)
  • 1.e4 e6 2.Nf3 d5 3.e5 c5 4.b4 (French: Wing gambit, 4 players, 3 days/move)

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