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TESTG500 Release 2020-12-29
Send your 1.b4 games to me, please. Thank you! /Marek
Marek Trokenheim's homepage
(c) Marek Trokenheim

1.b4 e5 2.Bb2 d6 3.c4 f5

(...)

4.a3 Nc6 5.b5 Nd4 6.e3 (6.Nc3 Nf6 7.e3 Ne6 8.Nf3 Be7) 6...Ne6 7.Nc3 Be7 8.Nf3 Nf6.

4.a3 Be7 5.Nf3 (5.c5 Nf6 6.Qb3 Nc6 7.Nf3 e4 8.cd6 Qd6) 5...Nf6 6.Nc3 (6.h4 0–0 7.h5 e4 8.Nd4 c5) 6...0–0 7.e3 e4 8.Nd4 c5.

4.a4 Nf6 5.g3 Be6 6.Bg2 Bc4 7.Bb7 Nbd7 8.Ba8 Qa8 9.Nf3 e4 10.Nd4 e3 11.f3 d5 12.Nf5 Bb4 13.Bc3 a5 14.Bb4 ab4 15.de3 0–0 16.0–0 Nh5 17.Ne7 Kh8 18.Nd5 Bd5 19.Qd4 c5 20.Qd3 Ne5 21.Qd2 Rd8 22.e4 Be4 23.Qg5 Qd5 24.Qh5 Nf3 25.ef3 Qh5 26.fe4 h6 27.a5 c4 28.a6 c3 29.a7 Ra8 30.Re1 Qc5 31.Kg2 Ra7 32.Ra7 Qa7 33.e5 Qa2 34.Kf3 c2 35.Nd2 c1Q 36.Rc1 Qd2 37.Rc8 Kh7 38.e6 Qd5 39.Kf4 Qe6 40.Rb8 Qd6 41.Ke4 Qb8 0–1. wk1234 – sooncomer, internet, 2014.

4.Qb3 Be7 5.d4 ed4 (5...Bf6 6.e3 a5 7.Qa4 Bd7 8.b5 Be6) 6.Nf3 (6.e3 Nf6 7.ed4 0–0 8.Nf3 a5) 6...Bf6 7.Nd4 a5 8.a3 Ne7.

4.Qb3 Nf6 5.e3 (5.Nc3 Be7 6.Nf3 0–0 7.e3 e4 8.c5 d5; 5.Nf3 Be7 6.Nc3 0–0 7.Rd1 e4 8.Nd4 c5) 5...Be6 (5...a5 6.Qa4 Bd7 (6...Nbd7 7.d4 Be7 8.de5 de5) 7.b5= Qe7 8.Nf3 c5; 5...Be7 6.d4 (6.Ne2 a5 7.b5 Be6 8.d4 Nbd7; 6.Be2 a5 7.ba5 Nc6 8.Nf3 Na5) 6...a5 7.b5 e4 8.Nc3 Nbd7; 5...Nbd7 6.d4 Be7 7.Nh3 ed4 8.ed4 d5) 6.g3 (6.Nf3 Be7= 7.d4 e4 8.d5 Bc8) 6...Be7=+ (6...e4 7.Ne2 Nc6 8.Nf4 Bf7) 7.Bg2 (7.d4 Nbd7=+ (7...ed4 8.Nf3 de3) 8.Nf3 e4; 7.Nf3 Bc8 8.d3 a5) 7...c6 (7...e4 8.f3 (8.Ne2 d5) 8...d5 9.c5–/+) 8.d3 (8.Nf3 a5=+ (8...b5 9.d3 a5=+); 8.Nh3 b5) 8...0–0 (8...Qb6 9.Nf3=+; 8...a5=+) 9.b5 (9.Nf3 h6=+) 9...Qc7 (9...Qd7 10.Ne2=+) 10.Nc3 Nbd7 11.Nge2 Kh8 (11...Nc5 12.Qc2=+) 12.a4 (12.0–0 a6 13.bc6 bc6=) 12...a6 (12...Nc5 13.Qc2=+) 13.0–0= Ng4 (13...Nc5 14.Qc2=) 14.Ba3 (14.h3 Ngf6=) 14...Rf6 (14...Kg8=) 15.Bh3 (15.h3!? Nh6 16.b6=) 15...Rh6=+ 16.Bg4 fg4 17.e4 (17.f4 gf3 18.Rf3 Bg4–/+) 17...Rf8 (17...Rf6 18.bc6 bc6 19.Rab1–/+) 18.Bc1 (18.Rab1 Rf3–/+) 18...Rh3 (18...Rhf6 19.Be3–/+) 19.bc6 (19.Be3 Rh5=+) 19...bc6 20.Nd1 (20.Bd2 Nc5 21.Qc2 Kg8–/+) 20...Qd8 (20...Nc5 21.Qc2–/+) 21.d4 (21.Qb7 Nc5 22.Qb4 Nd3–+) 21...ed4 (better 21...Rf3 22.Qc2 Qc7–/+) 22.Nf4? (better 22.Nd4 Nc5 23.Ne6 Nb3 24.Nd8 Rd8 25.Rb1 Nc1 26.Rc1=) 22...Rh6 (22...Bc4 23.Qc4 Ne5 24.Qe2 Rf4 25.Bf4 Nf3 26.Qf3 gf3 27.Rb1–+) 23.Ne6 (23.Kg2 Nc5 24.Qc2 Bg5–+) 23...Re6 24.Qd3 (24.Qb7 Qc8 (worse 24...Re4 25.Qc6 Nc5 26.Bf4–+) 25.Qb1 Qe8–+) 24...Ne5 25.Qe2 (25.Qc2 Nf3 26.Kh1 Qe8–+) 25...Nf3 26.Kg2 (26.Kh1 Qa5 27.Qd3 Qh5 28.h4 Bh4 29.Kg2 Bg5 30.Rh1 Qh1 31.Kh1 Rh6 32.Kg2 Rh2 33.Kf1 Rh1 34.Kg2 Rg1) 26...Bg5 (26...Qe8 27.Ra2–+) 27.Bg5 (27.Qd3 Bc1 28.Rc1 Qg5–+) 27...Qg5 (27...Ng5?! 28.Qg4 Qf6 29.f3 Ne4 30.Re1–/+) 28.Rh1 (28.c5 dc5 29.Ra2 c4–+) 28...Rh6 (better 28...Qh6 29.h3 gh3 30.Rh3 Qh3 31.Kh3 Ng1 32.Kg2 Ne2–+) 29.Rb1 Qh5 (29...Qh5 30.h3 gh3 31.Kf1 h2–+) 0–1. Diviak,Peter – Petras,Marian (1820), Stara Lubovna SVK, Boys Ch U18, 2012.

4.b5 Nd7 A) 5.e3 A1) 5...a6 6.ba6 (6.d4 Ngf6 7.ba6 Ra6 8.Nf3 Rb6 9.Bc3=; 6.Be2 ab5 7.cb5 Ngf6 8.Nf3 e4 9.Nd4=; 6.Nc3 Ngf6 7.ba6 Ra6 8.d4 Be7 9.Nf3=; 6.Nf3 ab5 7.cb5 Ngf6 8.Be2 e4 9.Nd4=; 6.Qc2 e4 7.d3 Ngf6 8.Nd2 Nc5 9.d4=) 6...Ra6 7.d4 Ngf6 8.Nf3 Rb6 9.Qc2=; A2) 5...e4 6.Ne2 (6.d4 a6 7.ba6 ba6 8.Nc3 Ngf6 9.Nge2=; 6.Nh3 Ngf6 7.d4 Be7 8.Nf4 Nf8 9.Be2=; 6.Nc3 Ngf6 7.Nh3 Ne5 8.d4 ed3 9.Bd3=) 6...Ne5 7.Nf4 Nf6 8.d4 Ng6 9.Ng6+=; A3) 5...Be7 6.Qh5 (6.d4 Ngf6 7.Nd2 0–0 8.Qc2 ed4 9.ed4=; 6.Nc3 Ngf6 7.Qc2 Nb6 8.Nf3 0–0 9.Be2=) 6...g6 7.Qd1 Ngf6 8.d4 ed4 9.Bd4=; A4) 5...Ngf6 6.Be2 (6.d4 Be7 7.Nd2 0–0 8.Qc2 Ng4 9.Rd1=; 6.Nc3 a6 7.ba6 Ra6 8.d4 Be7 9.Nf3=; 6.Nf3 e4 7.Nd4 Nc5 8.Nc3 a6 9.Be2=) 6...Be7 7.Nf3 a6 8.d4 ab5 9.de5=; B) 5.d4 B1) 5...Ngf6 6.Nh3 (6.Nf3 e4 7.Ng5 Nb8 8.e3 Be7 9.Be2=; 6.e3 a6 7.ba6 Ra6 8.Nf3 Rb6 9.Qc2=; 6.Nd2 a6 7.ba6 Ra6 8.e3 Be7 9.Ngf3=) 6...ed4 7.Bd4 Ne5 8.e3 a6 9.Nf4=; B2) 5...a6 6.e3 (6.ba6 Ra6 7.e3 Ngf6 8.Nf3 Rb6 9.Qc2=; 6.Qc2 ab5 7.cb5 Ne7 8.de5 Ne5 9.Nf3=; 6.Nc3 ed4 7.Qd4 Nc5 8.e3 Nf6 9.Be2=; 6.Nd2 ab5 7.cb5 e4 8.Nh3 Ngf6 9.Nf4=; 6.a3 Ngf6 7.ba6 Ra6 8.e3 Be7 9.Qf3=) 6...ab5 7.cb5 e4 8.d5 Ngf6 9.Nh3=; B3) 5...e4 6.e3 (6.Nh3 Ngf6 7.e3 Be7 8.Be2 0–0 9.Nf4=; 6.Nc3 a6 7.ba6 Ra6 8.Nh3 Ngf6 9.e3=) 6...Ngf6 7.Nh3 Be7 8.Be2 Nb6 9.0–0=; B4) 5...f4 6.Qd2 (6.g3 Ne7 7.Nf3 Ng6 8.gf4 ef4 9.Bg2=) 6...Ngf6 7.e3 fe3 8.Qe3 Qe7 9.Nf3=.

4.b5 Nf6 A) 5.e3 A1) 5...Nbd7 6.Nc3 (6.d4 Be7 7.Nd2 0–0 8.Qc2 Ng4 9.Be2=; 6.Be2 e4 7.Nh3 Ne5 8.0–0 Be6 9.Qc2=; 6.Nf3 e4 7.Nd4 Nc5 8.Nc3 a6 9.ba6=) 6...a6 7.ba6 Ra6 8.d4 e4 9.Nh3=; A2) 5...Be7 6.d4 e4 7.Nh3 0–0 8.Nf4 a6 9.d5=; B) 5.d4 B1) 5...e4 6.e3 (6.Nc3 a6 7.d5 Be7 8.Nh3 e3 9.f3=; 6.Nh3 e3 7.fe3 d5 8.c5 b6 9.cb6=+) 6...Be7 7.Nh3 a6 8.d5 Bd7 9.Be2=; B2) 5...Nbd7 6.Nh3 (6.Nf3 e4 7.Ng5 Nb6 8.e3 Ng4 9.Nh3=; 6.e3 a6 7.Nh3 c5 8.Be2 ab5 9.cb5=; 6.Nd2 a6 7.ba6 Ra6 8.e3 Be7 9.Ngf3=) 6...a6 7.e3 ab5 8.cb5 c5 9.de5=.

4.Qc2 A) 4...Nf6 5.b5 A1) 5...Nbd7 6.Qf5 Nc5 7.Qc2 Be7 8.Nf3 0–0; A2) 5...e4 6.Nc3 (6.f3 Nbd7 7.fe4 fe4 8.Nc3 Nc5; 6.Nh3 Nbd7 7.Nc3 Be7 8.Nf4 Ne5) 6...Nbd7 7.f3 Ne5 8.e3 Be7; A3) 5...Be7 6.Nc3 (6.Nf3 0–0 7.Nc3 Nbd7 8.e3 Nc5) 6...0–0 7.Nf3 Nbd7 8.e3 Nc5; B) 4...Na6 B1) 5.a3 Nf6 6.Nc3 (6.Nf3 Be7 7.Nc3 0–0 8.Qb3 e4; 6.g3 Be7 7.Nh3 0–0 8.Bg2 c5) 6...Be7 7.Nf3 0–0 8.h3 e4; B2) 5.Ba3 Nf6 6.Nc3 (6.Qb3 Be7 7.Nc3 0–0 8.Nf3 e4) 6...c5 7.bc5 Nc5 8.Nf3 Qa5; C) 4...Ne7 5.b5 C1) 5...Nd7 6.Nf3 (6.Nc3 Nb6 7.e4 Be6 8.Nf3 Nc4) 6...Nc5 7.d4 ed4 8.Bd4 f4; C2) 5...e4 6.Nc3 (6.f3 Nd7 7.fe4 fe4 8.Nc3 e3) 6...Nd7 7.g4 Nf6 8.g5 Nd7; D) 4...Be7 D1) 5.Nf3 Nf6 6.Nc3 (6.b5 0–0 7.Nc3 Nbd7 8.e3 Nc5) 6...0–0 7.Nd5 Nc6 8.Ne7 Qe7; D2) 5.b5 D21) 5...Nd7 6.Nf3 (6.Nc3 Ngf6 7.Nf3 0–0 8.e3 Nc5; 6.e3 Ngf6 7.Nf3 0–0 8.Nc3 Nc5) 6...Ngf6 7.e3 Nc5 8.Nc3 0–0; D22) 5...Nf6 6.Nc3 (6.Nf3 0–0 7.Nc3 Nbd7 8.e3 Nc5) 6...0–0 7.Nf3 Nbd7 8.e3 Nc5; D3) 5.Nc3 Nf6 6.Nf3 (6.b5 0–0 7.Nf3 Nbd7 8.e3 Nc5) 6...0–0 7.b5 Nbd7 8.e3 Nc5.

4.Nc3 c6 5.e3 Nf6 6.Nf3 Be7 7.Be2 0–0 8.0–0 Na6 9.a3 Nc7 10.h3 Ne6 11.d4 e4 12.Nd2 Bd7 13.f4 Rf7 14.d5 Nf8 15.Qb3 Ng6 16.Nd1 Qb6 17.Rb1 Qc7 18.Bf6 Bf6 19.Rc1 a5 20.dc6 bc6 21.c5 d5 22.Bh5 a4 23.Qc2 Rff8 24.Bg6 hg6 25.Nf2 g5 26.g3 gf4 27.gf4 Be6 28.Nh1 d4 29.Rce1 de3 30.Re3 Bd4 31.Kf2 Qf4 32.Ke1 Qe3 33.Kd1 Rfd8 34.Re1 Qh3 35.Kc1 Bc3 36.Nf2 Bd2 37.Qd2 Qa3 38.Qb2 Qb2 39.Kb2 Rd2 0–1. elev – iacobsohn, internet, 2014.

4.Nc3 g6 5.e4 Bg7 6.ef5 Bf5 7.Be2 Nf6 8.Nf3 0–0 9.0–0 Nc6 10.b5 Ne7 11.d4 e4 12.Nd2 Qd7 13.d5 Bg4 (better is 13...c6!?=) 14.Bg4 (worse is 14.Nce4 Be2 15.Qe2 Nfd5 16.Bg7 Nf4+=) 14...Ng4 15.Nde4 Ne5 16.Qb3 b6 (16...Rae8!?+/–) 17.Ng5+– Nd3 18.Ne6 Rf7 19.Ng7 Kg7 20.Ne4 Nb2 21.Qb2 Kh6 22.Qd2 Kg7 23.Ng5 Rf6 (23...Rf5 24.Rae1 Kg8 25.Re4+–) 24.Qc3 Ng8 (24...Qf5 25.Qe3 Re8 26.Ne6 Re6 27.de6+–) 25.Rae1 Re8 (25...a6 26.a4+–) 26.Re8 Qe8 27.Re1 Qd7 28.Ne6 Kf7 (28...Kh8 29.g4 h6 30.f4+–) 29.Re3 (better is 29.Qh3 Ke8 30.Nc5 Qe7 31.Re7 Ne7 32.Qd7 Kf7+–) 29...Nh6 (29...h6+–) 30.Rh3 Nf5 (30...Re6 31.de6 Qe6 32.Rh6 Kg8+–) 31.Rh7 Kg8 32.Rd7 1–0. tyop (1770) – kalipe, internet, 2013.

4.d4 Nc6 5.d5 Nb4? (better is 5...Nce7=) 6.Qa4+– Nc6 7.dc6 bc6 8.Nc3 Nf6 9.Qc6 Bd7 10.Qa6 g5 11.Rb1 Bg7 12.c5! d5 (12...dc5 13.e3 Combination) 13.Nf3 e4 14.Ng5 (14.Ng5 c6 15.Nh3+–) 1–0. Fournier,Frederic (1635) – tamalito (1680), Active, 2006.

4.d4 Nd7 5.e3 Ngf6 6.Nd2 Be7 7.Be2 0–0 8.de5 de5 9.Qc2 e4 10.a3 a5 11.c5 ab4 12.ab4 Ra1 13.Ba1 Kh8 14.f3 Qe8 15.fe4 fe4=+ 16.Ne4 Ne4–/+ 17.Qe4 Nf6?? 18.Qd4 Qd7 19.Nf3+/– Qd4 20.Bd4+– Nd5 21.b5 Bg4 22.0–0 Re8 23.Bc4 Nf6 24.Ne5 Bh5 25.h3 Ne4? 26.Nf7 Bf7 27.Rf7 Bf6 28.Bf6 gf6 29.Rc7 Nd2 30.Bd5 Re3 31.Rb7 Re5 32.Rd7 Nb1 33.c6 Nc3 34.c7 Ne2 35.Kf2 (35.Kf2 Re8 36.Rd8 Kg7 37.Re8 Kh6 38.Ke2 Kg6 39.Rg8 Kf5 40.c8Q Ke5 41.Re8 Kd5 42.Qc6 Kd4 43.Re4) 1–0. wlittle (2155) – alexp (2375), net–chess.com, 2004.

4.d4 Qf6 5.de5 de5 6.a3 Be6 7.e3 Nd7 8.Nf3 0–0–0 9.Qc2 b6 10.Be2 Bd6 11.0–0 Qg6 12.c5 bc5 13.bc5 Nc5 14.Ne5 Qe8 15.Bd4 Qa4 16.Qa4 Na4 17.Ba6 Kb8 18.Nc6 Ka8 19.Nd8 Nf6 1–0. kaasparov – mitroi, internet, 2013.

4.e3 b6 5.Nf3 Bb7 6.d4 (6.Nc3!?+/–) 6...e4= 7.Nfd2 d5 (7...Nf6!?=) 8.Nc3+/– Nf6 9.Qb3 a5 (9...Nc6 10.Nd5 Nd5 11.cd5 Nb4 12.Bb5 Kf7 13.d6 Nd5 14.dc7 Qc7 15.0–0+/–) 10.ba5 Ra5 11.cd5 Nd5 12.Bb5 c6 13.Be2 Na6 (13...Nd7!?+/–) 14.Nc4+– Bb4 15.Na5 Nc3?? (better is 15...Ba5 16.0–0 Nac7+–) 16.Nb7 Ne2 17.Ke2 Qc7 (17...Qd5 18.Rhc1 Kd7 19.Bc3 Qb5 20.Ke1+–) 18.Qe6 Kf8 (18...Be7 19.Rhc1 Qd7 20.Rc6 Qe6 21.Re6+–) 19.Qf5 Ke8 (19...Kg8 20.Qe6 Kf8 21.Rac1+–) 20.Qe4 Kd7 (20...Be7 21.Ba3 Qb7 22.Be7+–) 21.Qg4 Ke8 22.d5! Qb7 (22...cd5 23.Qe6 Double attack (23.Bg7 Discovered attack; 23.Qe6 Decoy)) 23.Bg7 Rg8 (23...Rf8 24.Bf8 Kf8 25.Qf5 Kg8+–) 24.Qe6 Kd8 25.Bf6 Be7 26.dc6 Qc7 (26...Nc5 27.Rhd1 Kc7 28.Rd7 Kb8 29.Qg8 Bf8 30.Qf8 Ka7 31.cb7 Ka6 32.Rb1 Ka5 33.Qa8 Na6 34.b8N Ka4 35.Qa6) 27.Qg8 1–0. Janek – Vigilante, internet free game, 2017.

4.e3 d5 5.cd5 (5.Be5 Nc6 6.Nf3 Nb4+–) 5...Qd5+= 6.Nc3 Qd6 7.a3 a6 8.Bc4 Nf6 9.Qb3 Ne4 (9...Nc6!?=) 10.Bf7 Ke7 11.Ne4 fe4 12.Ne2 Be6 (12...a5 13.Nc3+–) 13.Be6 Qe6 14.Qc2 Nc6 15.Qe4 Rd8 16.Qh4 (16.f4 ef4 17.Qe6 Ke6 18.Nf4 Kd7+–) 16...Kd7 17.d4 Be7 18.Qe4 Bf6?? (18...ed4 19.Qe6 Ke6 20.Nd4 Nd4 21.Bd4+–) 19.de5 (better 19.d5 Qd6 20.dc6 Qc6 21.Rd1 Ke7 22.Qc6 bc6 23.Rc1+–) 19...Be5+– 20.Rd1 Kc8 21.0–0?? (better 21.Nd4 Nd4 22.Bd4+–) 21...Rd1 (21...Bh2 22.Kh2 Qe4 23.Ba1–+) 22.Rd1 (22.Be5 Rf1 23.Kf1 Qe5 24.Qe5 Ne5 25.Nd4–+) 22...Bh2! 23.Kh2 Qe4 24.Nf4 (24.Rd2 Rd8 25.Rd8 Nd8–+) 24…Qc2 0–1. GuestZMTB – GuestTNTL, freechess.org, 2017.

4.e3 Nd7 5.Nc3 Ngf6 6.Nf3 c6 7.Be2 e4 8.Nd4 Ne5 9.0–0 Be7 10.f4 Neg4 11.b5 c5 12.Nc2 Be6 13.d3 ed3 14.Qd3 0–0 15.Bf3 Rb8 16.Nd5 Nd5 17.Bd5 Bd5 18.Qd5 Rf7 19.Rfd1 Qe8 20.h3 Nh6 21.a4 Kh8 22.a5 Bf8 23.a6 b6 24.Re1 Qd7 25.e4+= fe4 26.Re4 Nf5 27.Rae1 h6 28.Re6 Kh7 29.g4 Nh4 30.f5 Be7?? 31.Rh6!! gh6 32.Qf7# 1–0. Trkn – guest5511, ICC, 2004.

4.e3 e4 5.d3 Nf6 6.de4 fe4 7.Nc3 Bg4 8.Be2 Qd7 (8...Bf5 9.Bh5 Nh5 10.Qh5 g6 11.Qe2+=) 9.h3 (better is 9.Ne4 Be2 10.Nf6 gf6 11.Ne2+– (11.Ke2?! Qg4 12.Kd2 Qc4+=)) 9...Bh5?? (better is 9...Be2 10.Nge2 c6=) 10.Bh5+– Nh5 (10...Kd8 11.Be2+–) 11.Qh5 g6 12.Qd5 c6 13.Qe4 Be7 14.Nf3 0–0 15.0–0 Na6 16.a3 b5 17.cb5 cb5 18.Rad1 Rae8 19.Qd4 Bf6 20.Qd6 Qd6 21.Rd6 Nb8 22.Rfd1 Rd8 23.Rd8 Bd8 24.Nb5 Nc6 25.Nfd4 Rf6 26.Nc6 Rc6 27.Rd8 Kf7 28.Rd7 Ke8 29.Ra7 Rb6 30.a4 Rb8 31.Ra8! Ra8 32.Nc7 Kd7 33.Na8 Kc6 34.b5 Kb7 35.a5 Ka8 36.a6 Ka7 37.Bd4 Ka8 38.b6 h5 39.b7 Kb8 40.Be5 Ka7 41.b8Q Ka6 42.Bd4 Ka5 43.Bc5 Ka4 44.Qb4 1–0. Fournier,Frederic – Guest1143353, Partie amicale, 2007.

4.e3 Be7 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be7 4.c4 f5).

4.e3 Ne7 5.Nf3 g6 6.d4 Bg7 7.de5 Nbc6 8.ed6?? (better is 8.Be2+=) 8...Bb2–+ 9.de7? (9.Nbd2 Qd6 10.Rb1–+) 9...Qd1 (9...Ba1?? 10.ed8Q Nd8 11.c5+–) 10.Kd1 Ba1 11.b5 Ne5 12.Nd4 Ke7 13.Be2 (13.Nb3 Ng4 14.Ke1 Bg7–+) 13...Be6 (better is 13...Rd8!? 14.Kd2 Bd4 15.ed4 Rd4 16.Kc3–+) 14.Nd2 Rhd8 (better is 14...Bc3 15.Ne6 Ke6–+) 15.Kc2?? (15.Ne6 Ke6 16.Kc2 Rd2 17.Kd2–+) 15...Bd4 16.ed4 Rd4 0–1. lendzior (1615) – vitruvius (1785), internet, 2013.

4.e3 f4 5.e4 (better is 5.ef4!? Nf6 6.Qe2+/–) 5...Nf6= 6.f3 g5 7.d4 g4 (7...ed4!? 8.b5 Bg7=) 8.de5+= gf3?? (better is 8...de5 9.Qd8 Kd8 10.Be5 Bb4 11.Nc3 Rf8+=) 9.ef6+– fg2 (9...Rg8 10.Qf3 Bh6 11.c5+–) 10.Bg2 (better is 10.Qh5 Kd7 11.Qf5 Ke8 12.f7 Ke7 13.Qf6 Kd7 14.Bg2 Qf6 15.Bf6 Ke6 16.Bh8 Nc6+–) 10...f3 (10...Rg8 11.Qh5 Rg6 12.Bh3+–) 11.Qf3 (11.f7!? Kf7 12.Qf3 Kg8 13.Qg3 Kf7 14.Bh8 Be6+–) 11...Be6 12.f7! Kd7 (12...Bf7 13.Bh8 Discovered attack) 13.Bh8 Nc6 (13...Qh4 14.Kd2 Nc6 15.Bc3+–) 14.a3 (better is 14.b5 Na5 15.Bh3 Qh4 16.Ke2 Qe7+–) 14...Nd4 (14...Qh4 15.Qg3 Be7+–) 15.Bd4 Bc4 16.Nd2 (better is 16.Bh3 Kc6 17.Nd2 b5+–) 16...Be6 17.Ne2 Qe7 18.Rf1 c5 19.bc5 dc5 20.Bb2 Rd8 21.Nf4 (better is 21.Bf6 Qd6 22.0–0–0 Kc8+–) 21...Qd6 22.Rd1 (better is 22.Ne6 Kc8 23.Nc4 Qe6+–) 22...Qc6 23.Nc4 (better is 23.Ne6 Qe6 24.Bh3 Kc6 25.Be6 a5+–) 23...Kc7 24.Be5 Kc8 25.Ne6 Qe6 26.Bh3 1–0. lican – patimoto, internet, 2013.

4.e3 Qg5 5.Nf3 Qg4 6.h3 Qe4 (6...Qg6 7.Nc3=) 7.Nc3 Qc6 8.b5 Qc5?? (8...Qd7 9.Be2+=) 9.a4 (better is 9.Na4 Qb4 10.a3 Qb2 11.Nb2+–) 9...Nf6 (9...c6!?+/–) 10.Ba3+– Qb6 11.a5! Qa5 12.Bd6! Qb6?? (12...cd6 13.Ra5 Discovered attack; 12...Bd6 13.Ra5 Discovered attack) 13.Be5 (better is 13.c5 Bd6 14.cb6 cb6 15.Bc4+–) 13...Nbd7 14.Bd4 Qe6 15.Ng5 Qe7 16.Qc2 Nc5 17.Bc5 Qc5 18.d4 Qe7 19.Bd3 g6 20.0–0 h6 21.Nf3 Bd7 22.Ne5 Qg7 23.Nd7 Qd7 24.c5 Nd5 25.Ne2 Nb4+/– 26.Qc3 Nd3 27.Qd3 Qd5? 28.Nf4 Qf7 29.d5 Bc5?? 30.Ne6 Bd6 31.Qc3 Rg8 32.Rfc1 Rc8? 33.Ra7 f4 34.Rb7 Kd7 35.Qc6 Ke7 36.b6 fe3 37.f3 Qf5 (37...Qf5 38.Nc7 Rgd8 39.Ne6 Kf6 40.Nd8 Rd8+–). lican – donatys112, internet, 2013.

4.Nf3 c5 5.bc5= e4 6.Nd4 dc5 7.Nb3 Nf6 8.e3 Nc6 9.a3 Bd6 10.Be2 0–0 11.Nc3 Be6 12.Qc2 Ne5 13.Na4 b6 14.0–0 Nfg4 15.Bg4 Ng4 16.g3 Qe8 17.Nc1 Qh5 18.h4 Qf7 19.d3 ed3 20.Nd3 Bc4 21.Qe2 Rad8 22.Rad1 Bc7 23.Rd2 Qd7 24.Nac5? bc5 25.Rfd1 Ba5 (25...Ba5 26.Nc5 Bd2 27.Qc4 Qd5 28.Qd5 Rd5–+) 0–1. Schuhler,Ernst – Secula,V, corr SOK–92–90, 1992.

4.Nf3= Nc6 5.b5 A) 5...Nce7 6.Nc3 (6.e3 Nf6 7.Nc3 Ng6 8.Be2 Be7) 6...Nf6 7.g3 g6 8.Bg2 Bh6; B) 5...Na5 6.Qa4+= c5 7.Nc3 Nf6 8.Nd5 Nd5.

4.Nf3= e4 5.Nd4 Nc6 6.d3 (6.b5 Nd4 7.Bd4 Nf6 8.Nc3 Be7) 6...ed3 7.Qd3 Nf6 8.Nc6 bc6.

4.Nf3 Be6 5.e3 e4 6.Nd4 Bd7 (6...Bc8 7.a3 (7.d3 Nf6 8.Be2 c5 9.Nc2 Be7 10.Nd2 Nc6 11.b5 ed3 12.Bd3+=; 7.Be2 Nf6 8.d3 c5 9.Nc2 Be7 10.Nd2 Nc6 11.b5 ed3 12.Bd3+=; 7.Nc3 c5 8.Nc2 Nf6 9.Be2 Qb6 10.a3 Nc6 11.Nd5 Nd5 12.cd5+=) 7...Nf6 8.d3 Be7 9.Be2 c5 10.Nb5 0–0 11.de4 Nc6 12.bc5+=; 6...Qe7 7.Be2 (7.d3 Nf6 8.Be2 Bd7 9.0–0 Nc6 10.Nc6 Bc6 11.Bd4 Qf7 12.f3+=; 7.Ne6 Qe6 8.Nc3 Nf6 9.Nb5 Na6 10.Qa4 Qd7 11.Bf6 gf6 12.d4+=; 7.Nc3 Nf6 8.Ne6 Qe6 9.Nb5 Na6 10.Qa4 Qd7 11.Bf6 gf6 12.d4+=) 7...Nf6 8.d3 Bd7 9.0–0 Nc6 10.Nc6 Bc6 11.Bd4 Qe6 12.b5+=) 7.Be2 (7.d3 Nf6 8.Be2 Be7 9.0–0 0–0 10.Nd2 Qe8 11.a3 Qg6 12.f3=; 7.b5 Nf6 8.Be2 Be7 9.0–0 0–0 10.d3 a6 11.Nc3 ab5 12.cb5=; 7.Nc3 Nf6 8.d3 Be7 9.de4 fe4 10.Qc2 c5 11.bc5 dc5 12.Nde2=) 7...c5 (7...Nf6 8.d3 Be7 9.0–0 0–0 10.Nd2 Qe8 11.a3 Qg6 12.f3=) 8.bc5 (8.Bh5 Ke7 9.bc5 dc5 10.Nb3 Na6 11.d4 ed3 12.Qd3+/–) 8...dc5 9.Nb3 (9.Bh5 g6 10.Nf5 Bf5 11.Bh8 gh5 12.Qh5=) 9...Be6? (better is 9...Nf6= 10.d3 Be7 11.de4 fe4 12.N1d2+=) 10.Nc5!+– Bc8 (10...Bc5 11.Bg7 Combination) 11.Nb3 (11.Qa4 Nc6 12.Bh5 Ke7+–) 11...Nf6+/– ½–½. Kamaletdinov,Farit (1970) – Ivchenko,Evgeny, Astrakhan Open, 2011.

4.Nf3 Be7 5.e3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7).

4.g3 c6 5.Bg2 Nf6 6.d4 Be6 7.de5 (7.de5 de5 8.Qd8 Kd8 9.a3=). Ultima.X – DonSalvaje, ChessWorld.net, 2020.

4.g3 Be6 5.Bg2 c6 6.d3 =+.

4.g3 Be7 5.Bg2 Nh6 6.d4= 0–0 7.Nd2 c6 8.Qb3 a5 9.b5 a4=+ 10.Qc2 cb5 11.de5= a3 12.Bc3 de5 13.cb5 Be6 14.Ngf3 Nd7 15.Ne5 Ne5 16.Be5 Rc8 17.Qd3+= Bb4 18.Rd1 Rf7 19.Qd8 Rd8=+ 20.Bf4 Rfd7 21.Bg5 Ra8 22.0–0 Nf7 23.Be3 Rad8 24.Bb6 Bd2 25.Bb7 Rb7 26.Bd8 Bb4 27.b6 Nd8 28.Rd8 Kf7 29.Ra8? Rb6 30.Rb1 Ba2 31.Rb4 Rb4 32.Ra3 Bc4 (32...Bc4 33.Ra7 Kf6–+) 0–1. Lifshitz,Samuel – Belanoff,Stuart, CP–2003–F–00001, 2007.

4.g3 Qf6 5.Bg2= Nh6 6.Nh3 Ng4 7.0–0 Qh6 8.Nc3 f4 9.gf4 ef4 10.Nd5+/– Qh4?? 11.Nc7+– Kd7 12.Na8 Ke7 13.Nc7 Nh2 14.Kh2 Bh3 15.Bh3 g5 16.Nd5 Kf7 17.Qc2 g4 18.Qf5 Kg8 19.Qe6# 1–0. marre – wakjaq, internet, 2010.

4.h3 Nc6 5.a3 Be6 6.e3 Qd7 7.Nc3 0–0–0 8.Rc1 d5 9.cd5 Bd5 10.Nd5 Qd5 11.Nf3 e4 12.Nd4 Nd4 13.Bd4 Nf6 14.Bc4 Qd6 15.Bc5 Qc6 16.Bf8 Qd7 17.Bc5 Nd5 18.0–0 f4 19.Bd5 Qd5 20.Ba7 b6 21.Bb6 c6 22.Bd8 Rd8 23.Qg4 Kb7 24.Qf4 g5 25.Qf6 h5 26.Rc5 Qd6 27.Qg5 Qd7 28.Rfc1 h4 29.Rc6 Qc6 30.Rc6 Kc6 31.Qd8 Kb5 32.Qd4 Ka6 33.a4 Kb7 34.Qc5 Ka6 35.a5 Kb7 36.Qb6 Kc8 37.a6 Kd7 0–1. lican – fubango, internet, 2013.

4.a3 Nf6

5.d4 ed4 6.Qd4 (6.Bd4 Be7 (6...Nc6 7.Nf3 Nd4 8.Qd4 a5 9.Nbd2) 7.Nc3 Nc6 8.Nf3 0–0 9.e3) 6...Nc6 (6...Be7 7.e3= (7.Nf3 0–0 8.Nbd2 a5 9.b5) 7...Nc6 8.Qd1 0–0 9.Nf3) 7.Qe3 (7.Qf4 Be6= (7...Be7 8.Nc3 0–0 9.Nf3) 8.Nf3 Be7 9.b5) 7...Qe7 (7...Be7 8.Bf6 gf6 9.Nf3) 8.Qe7 Be7 9.Nf3 0–0 10.Nc3 Be6 11.e3 a5 (11...Rac8 12.Rd1+=) 12.Nb5 Rac8 (12...Ne8 13.Nbd4 Bd7 14.b5+=) 13.Nbd4+= Nd4 14.Nd4 Bf7? (better 14...Bd7!?+=) 15.Nf5+– Rfe8 16.Bd3 ab4 (16...Ra8 17.Kd2+–) 17.ab4 d5 (17...b6 18.Ra7+–) 18.Ne7 (18.Ne7 Re7 19.c5+–) 1–0. Baumann,Heinz (2355) – Walker,Maria (2215), remoteschach.de, 2003.

5.e3 Be7 6.d3 0–0=+ 7.Nd2 a5 8.g3 Qe8 9.Bg2 Kh8 10.Ne2 Qh5 11.h3 Na6 12.b5 Nc5 13.Nb3 Nb3 14.Qb3= Rb8 15.Kd2 f4 16.ef4 ef4 17.Nf4+/– Qh6 18.Kc2 Nh5= 19.Bc1 Nf4=+ 20.Bf4 Qg6 21.Be4 Bf5 22.Rae1 Be4 23.Re4 Bf6 24.Rhe1 Qh5 25.Kb1 b6 26.h4 Qf3 27.Qc2 Qh5 28.a4 Qc5 29.Ka2 Rbc8 30.R1e2 Qf5 31.Qd1 Qh3 32.Qe1 Qf5 33.R2e3 Qc5 34.Qe2 Qb4 35.Qc2+/– Qc5 36.Qe2 ½–½. alaamattar (2205) – hobgoblin (2155), net–chess.com, 2005.

5.Nf3 A) 5...Be7 6.Nc3 (6.c5 e4 7.cd6 Qd6 8.Nd4 Nc6 9.Nc6) 6...e4 (6...0–0 7.d3 Nc6 8.g3 Be6 9.Bg2) 7.Nd4 0–0 8.b5 c5 9.bc6; B) 5...e4 6.Nd4 Be7 7.Nc3 0–0 8.Nd5 c5 9.Nb5.

4.Nc3 Be6

5.e3 Qe7 6.Nf3 Qf6 7.Be2 Be7 8.0–0 Nc6 9.b5 Nd8 10.a4 Bf8 11.d4 e4 12.Nd2 Qe7 13.d5 Bf7 14.Qc2 Nf6 15.Rfd1 Qd7 16.Bf1 Be7 17.g3 0–0 18.Bg2 h6 19.Nb3 Nh7 20.Ne2 Bf6 21.Bf6 Nf6 22.Qc3 Qe7 23.Nbd4 Nh7 24.Nf5 Qf6 25.Qf6 Nf6 26.Nfd4 Bg6 27.Nc3 Re8 28.Re1 Nf7 29.f3 Ne5 30.fe4 Nc4 31.Bf1 Ne5 32.Bg2 Nd3 33.Rf1 Ne4 34.Ne4 Be4 35.Rfd1 Bg2 36.Kg2 Ne5 37.Nf5 Rf8 38.e4 Kh7 39.Nd4 Rf7 40.Ne6 Rc8 41.Rf1 1–0. kannisogoet – honorka11, internet, 2014.

5.e3 Nf6 6.d4 e4 (6...ed4!? 7.ed4 Qe7=) 7.d5+= Bf7 8.Nge2 Be7 9.Nd4 Qd7 10.Be2 0–0 11.Qb3 c6 12.0–0 cd5 13.Nd5 Nd5 14.cd5 Na6 15.Rfc1 (better is 15.Bb5!? Qc8 16.Ba6 ba6 17.f3+/–) 15...Nc7= 16.Bc4 a6 (16...b5 17.Be2 a6 18.Rc7 Qc7 19.Nf5=) 17.a4 (17.Ne6 Rfc8 18.Bg7 b5+/–) 17...Rfb8 (17...b5!? 18.Be2 Bf6 19.ab5 Bd4 20.Bd4 ab5=) 18.Ne6+/– b5 19.Nc7 Qc7 20.Bb5 Qb7 21.Bc6 (21.Bc6 Qb4 22.Qb4 Rb4 23.Ba8 Rb2 24.Rab1 Rb1 25.Rb1+–) 1–0. tyop (1735) – 006fik, internet, 2013.

5.e3 Nf6 6.Nf3 h6 7.d4 ed4 8.Nd4 Bd7 9.g3 Nc6 10.b5 Nd4 11.Qd4 c6 12.a4 Be7 13.Bg2 0–0 14.0–0 Rc8 15.Ne2 Ne4 16.Qg7 1–0. kannisogoet – dect10, internet, 2014.

4.d3 Nf6

5.Nc3 Be7 6.g3 0–0 7.Bg2 Qe8 8.Nf3 Nc6 9.b5 Nd8 10.a4 Ne6 11.a5 Rb8 12.Qc2 Kh8 13.Nd5 Bd8 14.Ba3 (14.0–0!?+=) 14...e4+= 15.de4 Ne4 (15...fe4 16.Nd2 Nd4–/+) 16.0–0+= Qh5 17.Rfd1 Bd7 18.Rab1 b6 19.ab6 ab6 20.Bb2 N4c5 21.e3 Ne4 22.Ra1 Nf6 23.Ra7 Nd5 24.cd5 Nc5 25.Nd4 Rc8 26.Nc6 Bc6 27.dc6 Bf6 28.Rd5 (28.Bf6 Rf6 29.Rda1 Re6+/–) 28...Bb2 29.Qb2 Qg6 30.Qc2 Qf6 31.Rd4 (31.Bh3 g6+/–) 31...Ne6 (31...Ra8!? 32.Qa2 Ra7 33.Qa7 Ne6+=) 32.Rda4+/– Nc5 33.Ra2 Qe5 34.Qc4 g6 35.Rd2 Qf6 36.Bd5 Rfe8 37.Kg2 Qe5 38.Bf3 Qf6 39.Rd4 Ne6 40.Rd2 Nc5 41.Bd5 ½–½. Tetenkina,Irina (2105) – Agrest,Svetlana (2195), Stockholm Scandic op (Women), 2000. (=1.c4 f5 2.b4 d6 3.Bb2 e5)

5.Nd2 Be7 6.e4 0–0 7.Ne2 Be6 8.ef5 Bf5 9.Ng3 Be6 10.d4 ed4 11.Bd4 Kh8 (11...Nc6 12.Nf3–/+) 12.Bd3 c5 13.Bc3 d5 14.a3 (14.bc5 Bc5 15.Qb3 d4+=) 14...d4 15.Bb2 cb4 16.ab4 Bb4 17.0–0 Nc6 18.Nf3 Bd6 (18...Qb6 19.Ng5 Bg4 20.f3–/+) 19.Bd4 (19.Nf5 Bc5+=) 19...Bg3–/+ (19...Nd4?! 20.Nd4 Bg4 21.Nf3+=) 20.Bf6 Bh2! (20...Rf6?! 21.hg3 Bg4 22.Be4=) 21.Nh2 (21.Nh2 Qf6 Zwischenzug; 21.Kh2 Qf6 Zwischenzug) 21...Qf6 22.Rb1 (22.Qh5 h6 23.Ng4 Qf7 24.Qf7 Rf7–/+) 22...Rad8 23.Qc2 Nd4 24.Qa4 Nf5 (24...Rd7 25.Qa7 Nc6 26.Qe3–/+) 25.Bf5 Bf5 (worse is 25...Qf5 26.Rb7 a6 27.Qa1+= (27.Qa6? Bc8 28.Qc6 Bb7 29.Qb7 Qf4–+)) 26.Rbd1 (26.Rb7 Bd3 27.Qa7 Bf1 28.Nf1 Rd4–+) 26...Rd1 (26...Bd3!? 27.Qa7 Bf1 28.Rd8 Rd8 29.Nf1–+) 27.Rd1–/+ Qb6 28.Qb5 Qg6 29.f3 Qf7 30.c5 h6 31.g4 Be6 32.Rd2 Bd5 33.Rf2 Bc6 34.Qa5 a6 35.Qc3 Qd5 36.Re2 Qf7 37.Rf2 Qg6 38.Qc2 Qc2 39.Rc2 Bf3 40.Nf3? Rf3–+ 41.Rb2 Rg3 42.Kf2 Rg4 43.Rb7 Rc4 44.Rb6 Rc5 45.Ra6 Rg5 46.Kf3 g6 47.Kf4 Rf5 48.Kg4 h5 49.Kh4 Rf4 50.Kg5 Rg4 51.Kh6 Kg8 52.Rf6 h4 53.Rf3 Rg3 54.Rf4 h3 55.Rh4 Kf7 56.Rf4 Ke6 57.Rf1 h2 58.Rh1 Rg2 59.Kg7 Kf5 60.Kf7 Kg4 61.Kg6 Kh3 62.Kf5 Rg1 63.Rh2 Kh2 0–1. Krebs,Joern – Noetzel,Felix, Berlin–ch U14, 2004. (=1.c4 f5 2.b4 e5 3.Bb2 d6)

5.Nd2 Be7 6.Ngf3 a5 7.b5 0–0 8.g3 Nbd7 9.Bg2.

5.Nd2 g6 6.e4 (6.Ngf3 Bh6 7.c5 Be6 8.Qa4 Qd7 9.b5) 6...Bg7 (6...Bh6 7.Ngf3 0–0 8.Be2 Be6 9.0–0) 7.Qc2 (7.Ngf3 0–0 8.Be2 fe4 9.Ne4) 7...0–0 8.Ngf3 b6 (8...Qe7 9.b5) 9.Be2 (9.b5=) 9...c5 10.bc5 bc5 11.Rb1 Nc6 12.a3 Bd7 13.0–0 Qc7 14.Rfd1 f4 15.Bc3 h6 16.Rb2 Rab8 17.h4 (17.Nb3 a5=) 17...Rb2 18.Bb2 Kh7 19.Nb1 Bg4 20.Nh2 Be2 21.Qe2 Rb8 22.Nf3 a6 23.Nc3 Qa5 (23...Nd4 24.Nd4 ed4 25.Na2–/+) 24.g3 (24.Nd5 Nd5 25.cd5 Nd4 26.Nd4 cd4=) 24...fg3 25.fg3 Rf8 26.Rf1 Qd8 27.Nd1 Qd7 28.Kg2 Nh5 29.Ne3 Kh8 30.Bc1 Nd4 31.Nd4 Rf1 32.Qf1 ed4 33.Nd5 Kh7 34.Qf3 Qe6 (34...Qa4 35.Qe2=) 35.Nc7 (35.g4 Nf6 36.g5 Nd5 37.cd5 Qe7+=) 35...Qc8= 36.Nd5 Qe6 37.Nf4 Nf4 38.gf4 Qf6 (38...Qf7 39.f5=) 39.Qg4 h5 40.Qg5 Qg5 (40...Kg8 41.f5+–) 41.hg5+– (worse 41.fg5 Be5+=) 41...Bf8 (41...Kg8 42.Kg3+–) 42.Kg3 Be7 43.f5 Bd8 44.Bf4 Bc7 45.Kf3 Kg7 46.Ke2 a5 47.Kd2 a4 48.Ke2 Kf7 49.Kf3 Kg7 50.Bg3 Kf7 ½–½. Buczko,Jozsef – Katona,Ferenc Jr (1835), HUN–chT2 Asztalos, 2004.

5.Nf3 Na6 (5...Be7 6.Nbd2 a5 7.b5 Nbd7 8.g3 0–0 9.Bg2) 6.Qb3 e4 7.de4 fe4 8.Nd4 c5 9.bc5.

5.g3 Be7 6.Bg2 0–0 7.Nc3 Nc6 8.b5 Nd4 9.e3 Ne6 10.Nge2 Qe8 11.a4 a6 12.Nd5 Nd5 13.Bd5 (13.cd5 Nc5 14.d4 ed4 15.Nd4 ab5 16.ab5 Ra1 17.Ba1 Bf6=) 13...c6+= 14.bc6 bc6 15.Bg2 Rb8 16.Bc3 (16.Rb1 f4 17.ef4 ef4 18.gf4 Nf4 19.Nf4 Bf6 20.Qe2 Rb2 21.Rb2 Bb2 22.Qe8 Re8 23.Kd2 Rf8+=) 16...Bd7 (16...f4 17.ef4 ef4 18.gf4 Nf4 19.Be4–/+) 17.0–0+= Qh5 18.f4 Bf6 19.Bf3 Qh3 20.Bg2 Qh5 21.Bf3 ½–½. Torres,Douglas Da Silva (2080) – Braga,Jose Pereira (2035), 3rd Aberto Xadrez Potiguar, 2008.

4.d4 Nf6

5.b5 ed4 6.Qd4 Nbd7 7.Nc3 Be7 8.Nf3 0–0 9.g3 Nc5.

5.de5 de5 6.Qd8 Kd8 7.Be5 Bb4 8.Bc3 Nc6 9.a3 Ba5 10.Ba5 Na5 11.e3 Nb3 12.Ra2 Be6 13.Rb2 Nc5 14.Nd2 Ke7 15.Ngf3 Rad8 16.Nd4 Rd6 17.Be2 Rhd8 18.0–0 g5 19.Bf3 Nfe4 20.Ne4 fe4 21.Ne6 Re6 22.Bg4 Ra6 23.Ra1 Rd3 24.h3 Raa3 25.Ra3 Ra3 26.Bf5 h6 27.Kh2 a5 28.Kg3 a4 29.Kg4 Kf6 30.Bc8 Rc3 31.Kh5 Rc4 32.Bb7 a3 0–1. typul48 – ventil (1625), internet, 2014.

5.de5 de5 6.Qd8 Kd8 7.Be5 Nc6 8.Bc3 Ne4 9.b5 Nc3 10.Nc3 Nd4 11.Kd2 Be6 12.e3 Bc5 13.ed4 Bd4 14.f3 Kc8 15.Kc2 Rd8 16.Rd1 a6 17.Nge2 Be3 18.Rd8 Kd8 19.ba6 Ra6 20.Ng3 c6 21.Bd3 g6 22.Re1 f4 23.Nge4 Ra5 24.g3 fg3 25.Re3 gh2 26.Re1 Rh5 27.Rh1 Bf5 28.Ne2 Rh3 29.N2g3 h5 30.Nf5 gf5 31.Nd2 f4 32.Bf5 Rh4 33.Ne4 Ke7 34.Nf2 Kf6 35.Bc8 b6 36.Bb7 c5 37.Bd5 Ke5 38.a4 Kd4 39.Rd1 Ke3 40.Nh1 Rh3 41.Rb1 Rg3 42.Ng3 fg3 43.Rb6 g2 44.Re6 Kf2 45.f4 g1Q 46.Rc6 h1Q 47.Bh1 Qh1 48.Rc5 Qe4 49.Kc3 Qf4 50.Kb4 Qd6 51.a5 h4 52.Kb5 h3 53.Rh5 1–0. dtpwaldi – lupa27 (1640), internet, 2013.

5.de5 de5 6.Be5 Qd1 7.Kd1 Bb4 8.Nd2 Bd6 9.Bf6 gf6 10.e3 Be5 11.Rb1 Be6 12.Rb7 Nc6 13.Ngf3 0–0–0 14.Ne5 fe5 15.Rb2 e4 16.Be2 Ne5 17.Kc2 Nd3 18.Bd3 ed3 19.Kc3 Rd6 20.Rhb1 Rb6 21.a4 Rd8 22.a5 Rb2 23.Rb2 Rd6 24.Nb3 Rc6 25.c5 Bb3 26.Rb3 Rc5 27.Kd3 Ra5 28.Kd4 Kd7 29.f4 h5 30.h3 Kd6 31.g3 c5 32.Kd3 Ra4 33.Rb7 a5 34.Rh7 c4 35.Kc3 Kc5 36.Rh5 Ra3 37.Kc2 Re3 38.Rf5 Kb4 39.g4 Rh3 40.g5 c3 41.Rf8 Rh2 42.Kc1 a4 43.g6 a3 44.g7 Rg2 45.g8Q Rg8 46.Rg8 a2 47.Ra8 Kb3 48.f5 1–0. waldi1962 – sakip, internet, 2014.

4.e3 a5

5.b5 c5 6.Be2 Nf6 (6...Be7 7.f4+=) 7.d4 (7.Nh3 Be7+=) 7...Nbd7 8.de5 de5 (8...Ne5 9.Nf3 Be6 10.Nbd2+=) 9.Nf3+– Qe7 10.Nc3 e4 11.Ng5 Kd8 (11...Nb6 12.0–0+–) 12.Rb1 (12.0–0 Kc7+–) 12...b6 (12...Kc7 13.Nh3+–) 13.Nd5 Nd5 14.Qd5 Qg5 15.Qa8 Qg2 16.Kd2 Qg6? (better 16...Qf2 17.Rhf1 Qh2 18.Rf5 Qc7+–) 17.Rbd1 Kc7 (17...Qe6 18.Kc2 Bd6 19.Rd5+–) 18.Kc2 Qe6 19.f4 Bb7 (19...Be7 20.Rhg1 Rg8+–) 20.Be5 Qe5 21.fe5 (21.Rd7 Kd7 22.Rd1 (22.fe5?? Ba8 23.Rd1 Kc7–+; 22.Qb7?! Qc7 23.Qd5 Ke7 24.Qf5 g6 25.Qe4 Kf7+–) 22...Ke6 23.Qb7+– (23.fe5? Ba8 24.Rd8 Bb7–+)) 21...Ba8–+ 22.Rdf1 (22.e6 Ne5–+) 22...g6 23.e6 (23.h4 Ne5 24.h5 Bh6–+) 23...Ne5 24.h4 Bh6 25.h5 Kd6 26.Rh3 Ke6 27.hg6 hg6 28.Rfh1 (28.Rd1 Nf7–+) 28...Nf7 29.Rg1 (29.a4 Bb7–+) 29...Kf6 (29...g5 30.Rf1–+) 30.Rd1 g5 31.Rh5 (31.Rd7 g4 32.Rh4 Kg7–+) 31...Kg6 32.Rd7 g4 33.Rh1 Ne5 (better 33...Rf8 34.Kd2 Bg5–+) 34.Rd6 Kg5 35.Rb6 Nf3 36.Ra6 (36.Bf1 Nh4 37.Re6 Kh5–+) 36...g3 37.Bf1 Nh4 (37...Nh2 38.Bh3–+) 38.Ra5 Kg4 39.Be2 Nf3 40.Ra6 Be3?? (better 40...Kg5 41.Bf1 Nh2–+) 41.Rh8+= Bg5? (better 41...g2 42.Raa8 Bg5+–) 42.Bf1+– (42.Rha8 g2 43.Rg6 Kf4 44.Rg5 Ng5–/+; 42.Raa8 g2 43.Rag8 g1Q 44.Rg5 Kg5 45.Rg8 Kf4 46.Rg1 Ng1+–) 42...e3 43.Raa8 (better 43.Rha8 e2 44.Be2+–) 43...g2?? (better 43...e2 44.Be2 g2+–) 44.Bg2 Ne1 45.Kd1 Ng2 46.b6 f4 (46...Kf3 47.Rae8 Bd8 48.Rh3 Kf2+–) 47.Rae8 f3 48.Rhg8 Kh4 (48...f2 49.Ke2 Nf4 50.Kf1 Nh5 51.Re3 Nf6+–) 49.Rg5! Kg5 50.b7 f2 51.Ke2 (51.Ke2 Kg4 52.Rg8 Kf5 53.Rf8 Kg4 54.b8Q f1B 55.Rf1 Nh4 56.Qe5 Nf3 57.Rf3 Kh4 58.Qg7 Kh5 59.Rh3) 1–0. zuri9 (2295) – chessus11 (1620), gameknot.com, 2018.

5.b5 Nd7 6.d4 Qe7 7.Ne2 c6 8.a4 Ngf6 9.Ng3 g6 10.Be2 Bg7 11.0–0 0–0 12.d5 cd5 13.cd5 f4 14.ef4 ef4 15.Nh1 Ne5 16.f3 Bf5 17.Nf2 Rae8 18.Re1 (18.Nc3 Ned7=) 18...g5 (18...Nc4 19.Ra2–/+) 19.Nd2 (19.Nc3=) 19...Nh5 (better is 19...Nd5!? 20.Bc4 Be6 21.Bd5 Bd5+=) 20.Nde4 Be4 21.Ne4 Qd8 22.Rc1 Qb6 23.Bd4 Rf7?? (better is 23...Nf3 24.Bf3 Bd4 25.Kh1 Ng7 26.Ng5 Be3+/–) 24.Bb6+– Ref8 25.Bc7 h6 26.Bd6 (26.Nd6 Rd7 27.Nb7 Nf6+–) 26...g4 27.Be5 Be5 28.Qb3 (better is 28.d6 Nf6 29.Bc4 Nd7+–) 28...Bd4 29.Kh1 gf3 30.Bf3 Ng3 31.hg3 fg3 32.Nd6 Rf3 33.gf3 1–0. typ48 – sarunas4, internet, 2013.

4.e3 a6

5.a4 Nf6 6.Be2 (6.d4 ed4 7.ed4 Be7=+) 6...Be7 7.Nh3 (7.Nf3 e4 8.Nd4 c5=+) 7...Ne4 (7...0–0!?=+) 8.0–0= f4 (8...0–0 9.f4=) 9.Bh5+= g6 10.ef4 (10.Bf3!? Ng5 11.Ng5 Bg5 12.d4 fe3 13.de5+=) 10...Bh3= 11.fe5 (11.gh3 gh5 12.Qh5 Kf8 13.Qh6 Kf7 14.Qh5 Kg7 15.fe5+–) 11...Bf5 (better 11...de5!? 12.gh3 gh5 13.Qh5 Kf8 14.Qh6 Kf7 15.Qh5 Kf8 16.Qh6 Kg8=) 12.d3+= Ng5 (12...d5 13.de4 de4 14.Be2+=) 13.ed6 Bf6?? (better 13...Qd6 14.Bh8 gh5 15.Qh5 Qg6 16.Qg6 hg6+=) 14.dc7+– Qd6 (14...Qc7 15.Bf6 Nh3 16.gh3+–) 15.c5 (15.cb8N Bb2 16.Qe2 Be5=+) 15...Qc6 (15...Qf8 16.Qe2 (worse 16.cb8R Rb8 17.Qe2 Kd7+–; worse 16.cb8Q Rb8 17.Qe2 Kd7+–) 16...Kd7 17.cb8B Rb8 18.Bg4+–) 16.cb8Q (worse 16.cb8N Rb8 17.Re1 Kf7+–; worse 16.cb8B Bb2 17.Qe2 Kf7 18.Qb2 Rhb8+–) 16...Rb8 17.b5! ab5 (17...Qe6 18.Bc3 0–0 19.Bf3+–) 18.ab5 Qe6 19.Re1 Be4 (19...Bb2 20.Re6 Ne6+–) 20.Bg4 Qe7 (20...Qf7 21.Qc2+–) 21.Nc3 (21.Re4?! Ne4 22.Qe2 Bb2 23.Qb2 Nf6+–) 21...0–0 (21...Bc3 A) 22.de4?! Bb2 23.Ra7 A1) 23...Ne4?? 24.Qd5 Rd8 25.Qe4 (worse 25.Re4 Rd5 26.Re7 Ke7 27.Rb7 Kf6–+) 25...Qe4 26.Re4 Kf7 27.Rb7 Kf6 28.Bd7+–; A2) 23...Rd8=; B) 22.Bc3 Rf8 23.de4+–) 22.Ne4 (22.de4 Qc5 23.Qb3 Kh8+–) 22...Bb2 (22...Ne4 23.de4 Qc5 24.Ba3+–) 23.Qb3 Qf7 24.Qb2 Ne4 25.Re4 Rbd8 (25...Rfe8+–) 26.Be6 1–0. GuestHMDD – KHALDOUN, freechess.org, 2018.

5.d4 ed4 6.ed4 Nf6 7.Bd3 Be7 8.Ne2 0–0 9.0–0 Ne4 10.d5 Bf6 11.Qc2 Bb2 12.Qb2 Qf6 13.Qf6 Rf6 (13...Nf6 14.Nd4+=) 14.f3 Ng5 15.Nbc3 White prepares the advance b5 15...Nd7 16.f4 Nf7 17.Nd4 White prepares b5 17...Nf8 18.a4 White intends b5 18...h6 19.b5 b6 (19...Bd7 20.Rfe1+/–) 20.h4 (20.ba6!? Ra6 21.Ncb5 Bd7+–) 20...g6+/– 21.g3 Nd7 22.Rfe1 Nc5 23.Bc2 Bd7 24.ba6 Na6 25.Ncb5 Re8 (better is 25...Kf8!?+/–) 26.Re8+– Be8 27.Re1 Bb5 28.Re8?? (better is 28.ab5 Nb4 29.Bb1+–) 28...Be8–+ 29.h5 Nd8 30.hg6 Bg6 31.Kf2 Nb4 0–1. orangutandu – alexgrece, internet, 2013.

5.d4 e4 6.Nh3 h6 7.Qh5+/– Kd7? 8.Qf5+– Ke8 9.Qg6 Kd7 10.Nd2 Ne7 11.Qe4 c6 12.Nf4 g5 13.Ne6 Qb6 14.d5 c5 15.Bh8 Qb4 16.Nf8 Ke8 17.Bf6 Kf8 18.Qe7 (18.Qe7 Kg8 19.Qg7#) 1–0. pierre (2185) – corint, internet, 2007.

4.e3 c6

5.Nf3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 c6).

5.Qh5 g6 6.Qd1 g5 (better is 6...Nf6!?=) 7.Qh5+/– Kd7 8.Nf3 Be7 9.Nc3 Kc7 10.b5 (10.c5!? Nf6 11.Qg5+=) 10...g4= 11.Ng1 Nf6 12.Qh6 Bd7 13.bc6 bc6 14.f3 Be8 15.Rc1 Kd7 16.f4 Nh5 (better is 16...Bf7=) 17.fe5?? (17.Bd3 Bg6 18.Bf5 Kc7 19.Nd5 (19.Bg4?! Bf8 20.Qg5 Be7 21.Nd5 cd5 22.cd5 Kb6=) 19...cd5 20.cd5 Kb6 21.Rc8 (21.Bg4?! Bf8 22.Qg5 Be7=; 21.fe5? Bf8 22.Bd4 Ka5 23.Bc3 Ka4 24.Bc2 Ka3–+) 21...Bh4 22.g3+=) 17...Bg5?? (better is 17...Bf8 18.e6 Kc8–+) 18.Qd6+– Kc8 19.Qa3 Bh4 Black prepares g3 20.Kd1 g3 0–1. lican – belmondo77, internet, 2013.

4.e3 Qe7

5.Nc3 Nf6 A) 6.Be2 Bd7 (6...Qd7 7.d4 Be7 8.de5 de5 9.c5 c6 10.Nf3 e4+=; 6...Be6 7.Nf3 e4 8.Nd4 a5 9.Ne6 Qe6 10.ba5 Nc6+=) 7.Nf3 e4 8.Nd4 c5 9.Nc2 Nc6 10.b5 Ne5=; B) 6.Nf3 e4 (6...Qd8; 6...Qd7) 7.Nd4 c5 8.Nc2 Nc6 9.d3 Qf7 10.de4 cb4=; C) 6.Nd5 Nd5 (6...Qf7 7.Qa4 Kd8 8.Nf6 Qf6 9.d4 Bd7 10.Qa3 Qe7+=) 7.cd5 Qf7 8.Qb3 Nd7 9.d4 e4 10.Nh3 Nb6=.

5.Be2 Nf6 6.Nc3 (6.a3 Nc6 7.b5 Nb8 8.Nf3 Qf7 9.0–0 a6 10.d4 e4=; 6.Nf3 e4 7.Nd4 c5 8.Nc2 Nc6 9.b5 Ne5 10.d4 ed3=+) 6...Qd7 (6...Bd7 7.Nf3 a5 8.b5 Rg8 9.d4 e4 10.Nd2 g5+–; 6...Be6 7.Nf3 e4 8.Nd4 a5 9.ba5 Bc8 10.0–0 Ra5+–) 7.d4 Be7 8.de5 de5 9.c5 c6 10.Nf3 e4+=.

5.Nf3 a5 6.b5 Nf6 (6...e4 7.Nd4 Nf6 8.Nc3 Qf7 9.Be2 Nbd7 10.f3 ef3+=; 6...Nd7 7.Be2 Ngf6 8.0–0 g6 9.d4 Bg7 10.de5 de5+=) 7.Be2 (7.Nc3 c6 8.Be2 Qf7 9.0–0 Be7 10.d4 e4+=) 7...g6 (7...Qf7 8.0–0 Be7 9.d4 e4 10.Ng5 Qg6+=) 8.0–0 (8.d4 e4 9.Nfd2 Bh6 10.c5 dc5=) 8...Bg7 (8...e4 9.Ne1 Bg7 10.d4 0–0=) 9.d3 (9.d4 e4 (9...Nbd7+= 10.de5 Ne5+=) 10.Nfd2 0–0+=) 9...0–0 (9...e4 10.Nfd2 ed3=) 10.Nc3 h6 (10...Nbd7=) 11.a4 Kh7 12.Ne1 (12.d4 e4 13.Nd2 Nbd7+=) 12...g5 (12...Be6 13.d4 Nbd7 14.d5=) 13.e4 (13.d4 c5+=) 13...f4 (13...Nbd7 14.ef5 Nc5 15.Ba3 Bf5 16.Bc5 dc5 17.Bf3=) 14.f3 c5 15.bc6 bc6 16.d4 (16.Rb1 Na6=) 16...ed4=+ 17.Qd4 Ng4 18.Qd2 Qa7 19.Kh1 Nf2 20.Rf2 Qf2 21.e5 Bf5 (21...Qe3 22.Qe3 fe3 23.ed6–/+) 22.Nd3 Qe3 23.Qe3 fe3 24.ed6 Nd7 25.Ne4 Bb2 26.Nb2 Be4 27.fe4 Rf2 (27...Rf6 28.c5 Rf2 29.Re1–/+) 28.Re1 Ne5 (better 28...Raf8!? 29.Kg1 Re8=+) 29.Nd1= Rf4 30.Nc3 (30.Ne3 Re8 31.Nd1 Re4 32.Nc3–/+) 30...Rb8–/+ 31.g3 (better 31.Kg1!?–/+) 31...Rf2–+ 32.Rd1?? (32.d7 Nd7 33.Kg1 Rb2–+) 32...Rb3 (better 32...Rb2 33.Rg1 Rc2–+) 33.d7 Nf7 34.e5 Rc3 35.e6 Re2 36.ef7 (36.d8Q Nd8 37.e7–+) 36...Rcc2 37.f8N Kg8 (37...Kg8 38.d8Q Rh2 39.Kg1 Rcg2 40.Kf1 e2 41.Ke1 ed1R 42.Kd1 Rh1) 0–1. Labahn,Wolfgang – Michailow,Sergej, Schleswig Holstein–ch qual, 1998.

5.Nf3 e4 6.Nd4 c5 (6...Bd7 7.Be2 Nf6 8.0–0 d5 9.a3 dc4 10.Bc4 Nc6=; 6...Nf6 7.d3 a5 8.a3 f4 9.de4 Qe4 10.Nc3 Qe7+=) 7.Nc2 Nf6 8.a3 a5 9.d3 ab4 10.ab4 Ra1=.

5.Nf3 Nf6 A) 6.a3 e4 (6...Qd7 7.d4 e4 8.Ng5 d5 9.Nc3 c6 10.Be2 Be7=) 7.Nd4 g6 8.Qa4 Bd7 9.Nb5 Na6 10.d4 c6=; B) 6.Be2 e4 7.Nd4 c5 8.Nc2 Nc6 9.b5 Ne5 10.0–0 Qf7=; C) 6.Nc3 e4 (6...Qd8 7.Be2 Be7 8.0–0 a5 9.Qa4 Qd7 10.b5 0–0+=; 6...Qd7 7.Be2 e4 8.Nd4 c5 9.Nc2 Nc6 10.a3 d5+=) 7.Nd4 c5 8.Nc2 Qf7 9.d4 Be7 10.Nb5 Na6=.

4.e3 g6

5.d4 Bg7 6.de5 Qd7 7.Nf3 (7.f4 de5 8.Nf3 Qd1 9.Kd1 Nf6=) 7...Nc6 8.e6 (8.Be2 Ne5 (worse 8...de5 9.b5 Qd1 10.Kd1+–) 9.Ne5 de5+=) 8...Qe7 9.Qb3 (9.Bg7 Qg7 10.Nd4 f4=) 9...Be6 10.Nc3 Nh6 (10...Nf6!?=) 11.Nd5+= Bd5 12.cd5 Ne5 (12...Bb2 13.Qb2 Ne5 14.Bb5 Kf7 15.Nd4+–) 13.Be2 (13.Bb5 Kf8 14.Nd4 Kf7+–) 13...0–0 (13...Nf3 14.Bf3 Bb2 15.Qb2+=) 14.Nd4+– Rfc8 (14...Rfe8 15.Rc1 Bf6 16.0–0+–) 15.Ne6 Bf6 16.h3 (16.Rc1 Nhf7+–) 16...Nhf7 17.Rc1 (17.g4 fg4 18.hg4 Nd7+–) 17...c6 (17...Nd8 18.Nd8 Qd8 19.g4+–) 18.0–0+– Nd7 (18...Re8 19.b5+=) 19.Bf6 (19.dc6 Rc6 20.Nd4 Rb6+–) 19...Nf6 20.dc6 bc6 (20...Rc6 21.Nd4 Rc1 22.Rc1+–) 21.Nd4 White prepares the advance b5 (21.Ba6+–) 21...Qd7? (21...c5 22.Ba6 Rc7 23.bc5 Rc5 24.Ne6 Rc1 25.Rc1+–) 22.Bf3?? (better 22.Ba6+–) 22...d5 (22...Ne4 23.Qc2 c5 24.Be4 fe4 25.bc5 dc5 26.Nb3+–) 23.b5 (23.Qc3 Nd8+–) 23...c5 (23...cb5 24.Nb5 Rc1 25.Rc1=) 24.Nc6+= c4 25.Qb4 (25.Qc3 Ne4 26.Qd4+–) 25...Nd6 (better 25...Rc7!?+=) 26.Rfd1+– a5 (26...Qe6 27.Rd5! Rc6 28.Rcd1+–) 27.Qc5 (better 27.Qc3 Nb5 28.Qf6 Rc6 29.Qc6 Qc6 30.Bd5 Qd5 31.Rd5+–) 27...Kg7? (better 27...Nb5 28.Rc4 Na7 29.Rd5 Qf7 (29...Rc6? 30.Rd7 Rc5 31.Rc5 Nd7 32.Ra5+–) 30.Ne7 Kg7 31.Nc8 Rc8+–) 28.Bd5 Nd5 (28...Qc7 29.a4 Nde4 30.Qc4 Nd5 31.Rd5 Qf7+–) 29.Qd5 (better 29.Rd5 Rd8+–) 29...Rd8 30.Nd8 Rd8 31.Rc4 Qe7 32.Rcd4 (32.Qc5 Kf7 33.Rcd4 Nb7 34.Qc4 Kf8 35.Rd8 Nd8+–) 32...Nf7 33.Qc6 Rf8 (33...Rd4 34.Rd4 Qe5 35.Rd7 Qa1 36.Kh2 Qe5 37.f4 Qe3 38.Qc7+–) 34.Rd7 (34.Qc3 Kg8+–) 34...Qb4 (34...Qa3 35.Qe6 Qb2 36.Ra7+–) 35.b6 Kh6 (35...f4+–) 36.Qc7 Ng5 37.b7 1–0. jaddwarrior (2075) – ed54 (2065), ChessWorld.net, 2016.

5.d4 Bg7 6.de5 de5 7.Qd8 Kd8 8.Nc3 Ke7 9.Nd5 Kd6 10.Rd1 Kc6 11.b5 Kd7 12.Nf3 c6 13.Nb6 Kc7 14.Na8 1–0. barba1 (2270) – m3011 (1705), internet, 2014.

5.Nf3 Bg7 6.Qc2 Nf6 7.Be2 e4 8.Nd4 Nc6 (8...c5!? 9.bc5 dc5=) 9.Nc6+= bc6 10.0–0 Bb7 11.a4 0–0 12.d3 d5 13.Nd2 ed3 14.Bd3 Ne4 15.Be4 Bb2 16.Qb2 de4 17.Rfd1 White plans b5 17...a5? (better is 17...Qf6!? 18.Qf6 Rf6+/–) 18.Ne4!+– Qd1? (18...fe4 19.Rd4 Double attack (19.Rd8 Discovered attack; 19.Rd4 Decoy)) 19.Rd1 fe4 20.b5 (better is 20.Rd7!? Rf7 21.Rf7 Kf7+–) 20...cb5 (20...Rfd8 21.Rd8 Rd8 22.h4+–) 21.cb5 Rab8 (21...Rf7+–) 22.Rd7 Rf7 23.Qb3 Rbf8 24.Rc7 Ba8 25.Rf7 Rf7 26.h3 Kg7 (26...Bb7 27.Qc3+–) 27.Qc3 Kh6 28.Qa5 Bd5 29.b6 Bb7 30.Qc5 Rd7 (30...Kg7 31.a5+–) 31.a5 (better is 31.Qf8 Rg7 32.h4+–) 31...Rd1 32.Kh2 Ra1 33.Qc7 Ra5+– 34.Qb7 Rf5 35.Qe4 Rf2 36.b7 Rb2 37.b8Q! Rb8 38.Qf4 g5 39.Qb8 Kh5 40.Kg3 Kh6 41.Kg4 Kg6 42.Qd6 Kg7 43.Kg5 Kg8 44.Kh6 Kf7 45.Kh7 Ke8 46.Qc7 Kf8 47.Kg6 Ke8 48.Kf6 Kf8 49.Qf7# 1–0. ourang – gitarman, internet, 2013.

5.Nf3 Bg7 6.d4 e4 7.Nfd2 Be6 8.Nc3 (8.Be2 Qg5 9.0–0 Nf6+=) 8...c6 (8...Nf6 9.Be2=) 9.d5 Bf7 10.g4 (10.Be2 Nf6=) 10...Ne7 (10...Nf6 11.Be2=) 11.Qb3 (11.gf5 gf5 12.Rg1=) 11...Nd7 (11...Rg8!?=) 12.dc6 (12.Nce4 Ne5 13.gf5 Nf5+–) 12...bc6 13.Nce4 fe4 (13...Ne5!? 14.f4 fe4 15.fe5 de5 16.Ne4 0–0+–) 14.Bg7+– Rg8 15.Bd4 c5 (15...d5!? 16.Qc2+–) 16.bc5 (16.Ne4?! cd4 17.Nd6 Kf8+–) 16...dc5 17.Bc3 Rb8 (17...Be6 18.Qd1+–) 18.Qd1 (18.Qa4 Nc8 19.Ne4 Ke7+–) 18...Nc6 (18...Nc8 19.Ne4 Qe7 20.Qd3+–) 19.Ne4 Kf8 (19...Rf8+–) 20.Qd6 Qe7 21.Qc6 Ne5 (21...Qe6 22.Nd6 Ke7 23.Rd1+–) 22.Qf6 (better 22.Qc5 Nc4 23.Bd4 Nb6+–) 22...Ng4 (22...Nd7 23.Qf4 g5+–) 23.Qf4 Re8 (23...Rb6 24.Qg4 h6 25.Rd1+–) 24.Nf6 Nf6 (24...Rd8 25.Nh7 Ke8 26.Qg4+–) 25.Bf6 Qe6 26.Qh6 Rg7 27.Qg7 1–0. Janek – Gutes, internet free game, 2017.

5.Nf3 Bg7 6.d4 e4 7.Nfd2 Nh6 8.Be2 (8.Nc3 0–0+=) 8...0–0 (8...c5 9.0–0=) 9.Nc3+= c6 (9...Nc6 10.Nd5+=) 10.0–0 b6 (10...Nd7 11.h3+=) 11.Qb3 Kh8 12.a4 White intends b5 12...a6 (12...c5 13.bc5 dc5 14.d5+–) 13.b5 ab5 14.ab5 Ra1 15.Ra1 c5 16.dc5 dc5 17.Nd5 Bb7 18.h4 Bd5 19.cd5 Nd7 (19...Qh4 20.Ra7 Rf7 21.Ra8+–) 20.Nc4+– Nf7 (20...Qb8 21.d6+–) 21.Ra7 Rg8? (better 21...Nf6 22.Ne5 Ne5 23.Be5 Re8+–) 22.Nb6! Nb6 (22...Nb6 23.Rf7 Pinning (23.Rf7 Deflection); 22...Qb6 23.Bg7 Double attack (23.Rd7 Deflection; 23.Rd7 Overloading)) 23.Rf7 Qd5 (23...f4+–) 24.Bg7 Rg7 25.Rf8 Rg8 26.Qc3 (26.Qc3 Qd4 27.Rg8 Kg8 28.ed4 c4 29.Qa5 Kf7 30.Qb6 e3 31.Bc4 Kg7 32.fe3 Kh6 33.Qf6 f4 34.ef4 Kh5 35.Qg5) 1–0. Dalia – Calau, internet, 2019.

5.Nf3 Bg7 6.Be2 Nf6 7.0–0 0–0 8.d3 b6 9.Nbd2 Bb7 10.b5 Nbd7 11.a4 Nc5 12.d4 Nce4 13.Ne4 fe4 14.de5 ef3 15.Bf3 Bf3 16.Qf3 de5 17.Be5 Qe7 18.Bf6 Qf6 19.Qd5 Rf7 20.Qa8 Bf8 21.Rad1 Kg7 22.Rd4 Bd6 23.g3 Qe6 24.Qd5 Qh3 25.Rh4 Qd7 26.Qg5 Be7 27.Qh6 Kg8 28.Rd4 Qf5 29.Qf4 Qh3 30.Qc7 Bc5 31.Rd8 Kg7 32.Qe5 Kh6 33.Rd5 Be3 34.Qe3 1–0. bauska18 – gamer77, internet, 2014.

4.e3 Nh6

5.Nc3 Be7 6.Nd5 0–0 7.Nf3 e4 8.Nd4 c5 9.bc5 dc5 10.Ne2 Bd6 11.h3 Nf7 12.Nef4 Na6 13.Be2 Nc7 14.Qb3 Qg5 15.0–0 Nd5 16.Nd5 Be6 17.d4 (17.Qb7? Rab8 18.Qa7 Rb2–+) 17...cd4 18.Bd4 b6 19.Qb2 Bd5 20.cd5 f4 21.ef4 Qf4 22.g3 Qg5 ½–½. pvanr (1925) – jordache2 (1985), gameknot.com, 2009.

5.d4 Qf6 (5...ed4 6.ed4 Be7 7.Nf3=) 6.Nc3 White gets the initiative 6...c6 7.Nf3 Be6 (7...Be7 8.Be2=) 8.d5+= Bf7 9.Qa4 e4 (better 9...Qd8!?+=) 10.Nd4+– Be7 (10...Qe7 11.dc6 bc6 12.Nc6+–) 11.dc6 bc6 12.Nd5 Bd5 13.cd5 0–0 (13...f4 14.dc6 fe3 15.c7 Nd7 16.fe3 Ng4+–) 14.dc6 Rc8 (14...f4 15.Bc4 Kh8 16.0–0–0+–) 15.Bc4 Kh8 16.Be6 Rc7 17.b5 Nc6 18.bc6 (18.Nc6?! Qe6 19.Rb1 Rb7+=) 18...Rac8 (18...Qg6 19.0–0 Bf6+–) 19.Bc8 Rc8 20.Qa7 Bd8 21.Rb1 Rc7 (21...Qf7 22.Qf7 Nf7 23.Ke2+–) 22.Qa8 Qe7 (22...Ng8 23.0–0 Rf7 24.Nb5+–) 23.Ne6! Rc6 (23...Qe6 A deflection 24.Qd8 A double attack) 24.Nd8 Rc7 25.Nf7 1–0. PeterRs (2415) – kirklandlake (1630), ChessWorld.net, 2016.

4.Nf3 Qf6?

5.Qb3 Ne7 6.Nc3 Na6 7.e3 Qg6 8.g3 Bd7.

5.Nc3 e4 6.Na4 Qe7 7.Nd4 Nc6 8.g3 Nb4.

5.e3 Nc6 6.b5 Nce7 7.Nc3 c6 8.Be2 Bd7 9.0–0 0–0–0 10.bc6+/– Bc6 11.Qb3 d5? 12.cd5+– Nd5 13.Nb5 Kb8?? 14.Be5 Qe5 15.Ne5 Bb5 16.Qb5 Ka8 17.Nf7 Nc7 18.Qa5 Rd2 19.Qc7 a6 20.Rab1 Re2 21.Qb7 1–0. pcmvr (2715) – miodrag (1980), net–chess.com, 2006.

5.e3 Nd7 6.Qb3 (6.Nc3 c6 7.Be2 Nh6 8.0–0 Be7) 6...c5 (6...Be7 7.d4= (7.Nc3 c6 8.Be2 Nh6) 7...e4 8.Nfd2 Qg6; 6...a5 7.Nc3 ab4 8.Nd5 Qd8) 7.Nc3 (7.d4 cb4 (7...cd4) 8.Qb4 (8.a3 e4) 8...Ne7+= (8...d5+=)) 7...Nb6 (7...cb4!? 8.Nd5 (8.Nb5 Nc5) 8...Qd8+=; 7...Qd8 8.h4 cb4) 8.Nb5+– Kd8 (8...Qe7!?+–; 8...Rb8+–) 9.bc5+– dc5 (9...Nd7 A) worse 10.Nd6 Nc5 11.Ne5 A1) 11...Qd6 12.Nf7 Kc7 13.Qc2 (13.Nd6?! Nb3 14.Nb5 Kd7 15.ab3 a6+–) 13...Nd3 14.Bd3+–; A2) 11...Bd6 12.Nc6 Kd7 13.Bf6 Nb3 14.Bg7 A21) 14...Kc6?? 15.ab3 (15.Bh8?! Na1 16.Ba1 Be6=) 15...Nf6 16.Bh8+– (worse 16.Bf6 Re8+–); A22) 14...bc6?? 15.ab3 (15.Bh8 Na1 16.Bd3 Ne7=+) 15...Nf6 16.Bh8+– (16.Bf6?! Rf8 17.Bd4 c5+–); A23) 14...Na1 15.Ba1 bc6=+ (15...Kc6?! 16.Bh8 Be6 17.d4=); B) 10.d4 e4 11.Nd2 dc5 12.Rd1+–) 10.Be5 Qe6? (better 10...Qc6+–) 11.Nc7 Qe7 12.Na8 Na8 13.Rd1 b6 14.d4 Bd7 (14...cd4 15.Nd4 (worse 15.Rd4 Ke8+–) 15...Ke8 16.Nc6+–) 15.dc5 Qc5 16.Qa4 (16.Qa4 Qb4 17.Qb4 Bb4 18.Ke2+–; 16.Rd5 Qb4 17.Bc3 Qb3 18.ab3 Ne7+–) 1–0. Grehl,Siegfried – Fiedler, corr SOK–89–28, 1989.

5.e3 Ne7 6.Nc3 Bd7 7.Be2 Nbc6 8.Qb3 g5.

4.g3 Nf6

5.f4 e4 6.Nh3 Be7 7.Bg2 0–0 8.0–0 Ng4 9.e3 Nd7 10.Nf2 Ndf6 11.Ng4 Ng4 12.Bh3 Nh6 13.d3 ed3 14.Qd3 Be6 15.Nd2 Qe8 16.b5 Qh5 17.Bg2 Ng4 18.h3 Nf6 19.a4 (19.Bb7 Qh3 20.Ba8 Ng4+/–) 19...Rab8 20.Rac1 Bd8 21.Bd4 b6 22.Nf3 h6 23.Bf6 Bf6 24.Nd4 Bd4 25.ed4 (worse is 25.Qd4 Rbe8=) 25...Rfe8 26.Bc6 Re7 27.Rce1 Qf7 28.d5 Bd7 29.Re7 Qe7 30.Rf2 Bc6 31.dc6 Re8 32.Qd5 Qf7 33.Kf1 Qd5 34.cd5 Re4 35.Re2 Ra4 36.Re7 Rb4 37.Rc7 Rb5 (better is 37...Rb1!? 38.Ke2 Rb2 39.Kd3 Rb5+/–) 38.Ra7+– Rc5 39.Rb7 (39.Rd7 b5+–) 39...b5 (39...Kh7 40.Rb8+/– (40.Rb6?! Rd5 41.Ke2 Rc5+=)) 40.c7 (better is 40.Rd7!?+–) 40...Kh7+/– 41.Rb5 Rc7 42.Rb6 Rd7 43.Ke2 Kg6 44.Kd3 Kf6 45.Kd4 Ke7 46.Rb8 Rc7 47.Rg8 Kf7 48.Rd8 Ke7 49.Rb8 Kf7 50.g4 fg4 51.hg4 Kg6? (better is 51...Ra7 52.Rb6 Ra4 53.Ke3 Ra3 54.Ke4 Ra4 55.Kf3 Ra3 56.Kf2 Ke7 57.Rb7 Kf6=) 52.Rd8+– Rf7 (52...Kf7 53.Rd6 Ke7 54.Re6 Kd8 55.Ke5+–) 53.Rd6 Kh7 54.f5 g6?? (54...h5+–) 55.Rg6 Ra7 56.Ke5 1–0. tyop (1710) – emiliux, internet, 2013. (=1.c4 e5 2.b4 d6 3.Bb2 f5)

5.Bg2 (--> 1.b4 e5 2.Bb2 d6 3.g3 f5 4.Bg2 Nf6 5.c4).

4.b5 Be6

5.e3 a6

6.ba6 Na6 7.d4 ed4 8.Bd4 Nf6 9.Nh3 =.

6.Qb3 Nd7 7.d4 ab5 8.Qb5 c6 9.Qb3 =+.

6.Nc3 ab5 7.cb5 d5 8.Nf3 Bd6 9.Be2 =.

6.d4 ab5 7.d5 Bf7 8.cb5 Nf6 9.Nc3 =+.

5.e3 Nf6

6.d4 ed4 7.Bd4 d5 8.cd5 Bb4 (8...Bd5 9.Nc3=) 9.Nd2 =.

6.d4 Nbd7 7.Nd2 Be7 (7...ed4 8.Bd4 a6 9.ba6=) 8.Ngf3 e4 (8...Ne4 9.de5= (9.Ne4 fe4 10.Nd2=)) 9.Ng5 (9.d5 Bf7 10.Nd4 g6+=) 9...Bg8= 10.d5 Ne5 11.Qc2 (11.f4 ef3 12.Ngf3 Nfg4=) 11...Nfd7 12.Nge4 (12.Nh3!?=) 12...fe4–/+ 13.Ne4 Bf6 14.Nf6 Nf6 (worse 14...Qf6 15.f4+–) 15.Be2 Bf7 16.f4 Ned7 17.g4 0–0 (better 17...Qe7 18.g5 Nh5–/+) 18.0–0–0? (better 18.g5 Nh5 19.Bd3=) 18...Nc5 (18...Qe7 19.Bd4–+) 19.h4 (19.Bd4 Qe7–+) 19...Qe7 20.Rh3 (20.h5 Qe3 21.Qd2 Qe7–+) 20...a6 (20...Nfe4 21.Bf3–+) 21.h5 (21.Bf6 Qf6 22.g5 Qe7–+) 21...ab5 22.g5 Nh5?? (better 22...Nfe4 23.g6 hg6–+) 23.Bh5=+ Bh5 (23...Ra2?? 24.Qh7 Kh7 25.Bf7) 24.Rh5 Qe3 25.Kb1 g6?? (25...Ne4 26.cb5 A) 26...Qf4 27.Rdh1 Rae8 28.Rh7 Qf1 29.Bc1+– (29.Rf1?! Rf1 30.Bc1 Kh7=); B) 26...Rf4–/+) 26.Rh7!!+– Qe4 (26...Kh7 27.Rh1) 27.Rg7 Kh8 28.Qe4 Ne4 (28...Rf6 29.Bf6 Ne4 30.Rh1) 1–0. Falco,Peter – Fussnecker,Manfred, Bad Homburg GER Open, 2006.

6.d4 Nbd7 7.Nf3 Qe7 8.de5 de5 9.Be5 =.

6.d4 e4 7.d5 Bc8 8.Be2 Be7 9.Nh3 +=.

6.Nf3 a6 7.d4 e4 8.Ng5 Bg8 9.ba6 =.

6.Nf3 h6 7.Nc3 Be7 8.Be2 Nbd7 9.d4 e4 10.Nd2 Nf8 11.d5 Bf7 12.f3 ef3 13.Nf3 Qd7 14.a4 g5 15.a5 g4 16.Nd4 Nh5 17.a6 b6 18.g3 Bf6 19.Nc6 Ng7 20.Bd3 h5 21.Qc2 Ng6 22.Rf1 Ne7 23.0–0–0 Nc6 24.bc6 Qe7 25.e4 fe4 26.Be4 0–0–0 27.Rde1 Be5 28.Nb5 Kb8 29.Kb1 Rhf8 30.Be5 de5 31.Rf2?? Qb4–+ (31...Qb4 32.Ka2 Qe1–+) 0–1. Mueller,E – Bannwart,R, Zuerich, 1999.

4.Nc3 Nf6

5.a3 g6 6.d4 Bg7 (6...ed4!? 7.Qd4 Bg7=) 7.de5+= de5 8.Qd8 Kd8 9.0–0–0 (9.Nf3 Re8+=) 9...Ke7 10.g3 c6 11.Bg2 Be6 12.c5 Bb3 13.Rd6 Ne8 14.Rd2 Na6 15.e3 Nac7 16.Nge2 Nf6 17.h3 Rhd8 18.Rd8 Rd8 19.Re1 Ncd5 (19...Ne6 20.Ng1+=) 20.Nd5 Nd5 21.Bd5 cd5 22.h4 (22.f4 Bc4+=) 22...Ke6 (22...b6 23.Kd2+=) 23.Nc3 (23.f4 Bc4=) 23...Bh6 (23...Bc4 24.f4–/+) 24.f4 Bg7 (24...Bc4 25.Ne2 Bg7 26.Ng1=) 25.Ne2 a5 26.fe5 Be5 27.Nd4 Bd4 28.Bd4 ab4 29.ab4 Ra8 30.Kb2 Bc4 31.Ra1 Ra1 32.Ka1 h6 33.Kb2 g5 34.hg5 hg5 35.Kc3 g4 36.Kb2 Bd3 37.Ka3 Bb5 38.Bc3 Kd7 39.Be5 Ke6 40.Bf4 Kd7 41.Kb3 Ke6 42.Kc3 Bc4 43.Kd4 Bb5 44.Bg5 Bc4 45.Bf4 Bb5 46.Bg5 Bc4 ½–½. tyop (1765) – jalapachess (1635), internet, 2013.

5.a4 Be6 6.e3 Nbd7 7.h3 b6 8.Nf3 g6 9.Be2 Bg7 10.Ng5 Bg8 11.Nf3 Be6 12.0–0 0–0 13.Ng5 Re8 14.Ne6 Re6 15.Qc2 Kh8 16.d4 ed4 17.ed4 Ne4 18.d5 Nc3 19.de6 Ne2 20.Qe2 Ne5 21.f4 Nc6 22.Bg7 Kg7 23.b5 Ne7 24.Qb2 Kh6 25.Qf2 Qg8 26.Rfe1 Re8 27.Ra2 d5 28.c5 bc5 29.Qc5 Qg7 30.Qc7 Qd4 31.Kh1 Qc4 32.Qd7 Qc8 33.Qa7 Qc3 34.Qd7 Qe1 35.Kh2 Rc8 36.Qe7 Rc1 37.Qg5 Kg7 38.Qe7 Kh6 39.Qg5 Kg7 40.Qe7 Kh6 ½–½. elev – cretuj, internet, 2014.

5.b5 g6 6.a4 Bg7=+ 7.e3 0–0 8.Nf3 h6 9.Be2= Be6 10.Qb3 Nbd7 11.0–0 g5 12.d4 e4 13.Nd2+= Kh8 14.Nd5 Nd5 15.cd5 Bg8 16.a5 Nf6 17.Ba3 Bd5=+ 18.Bc4 Bc4 19.Nc4 b6 20.ab6 ab6=+ 21.Qb2 Qd7–/+ 22.Rfb1 f4 23.Rd1 f3–+ 24.gf3 ef3 25.Ne5?? de5 26.de5 Qh3 27.Bf8 0–1. c – B_Alterman (2435), ICC, 2003.

5.d3 g6 6.g3 Bg7 7.Bg2 0–0 8.Qb3 Kh8 9.Nh3 h6 10.0–0 c6 11.e4 (11.b5 a6=) 11...Be6 (11...fe4 12.de4 Be6–/+) 12.Kh1? (better is 12.f4!?=) 12...fe4–/+ 13.de4 b5! 14.Rfd1 (14.cb5 Bb3 Pinning (14...Bb3 Deflection)) 14...Bc4 (better is 14...Qd7!? 15.Ng1 Ng4–+ (15...bc4?! 16.Qc2–/+)) 15.Qc2–/+ Qe7 16.a4 Qe6 17.f4 (17.Qd2 Ne8+=) 17...Ne8 18.Qd2 ba4 19.Na4 a6 (better is 19...Na6!?–/+) 20.fe5= Bb3?? (20...de5!? 21.Nc5 Qf7=) 21.Nf4 (better is 21.ed6 Bd1 22.Qh6 Kg8 23.Bg7 Rf1 24.Bf1 Qe4 25.Kg1 Ng7 26.Rd1+–) 21...Rf4+= 22.gf4 (22.Qf4 Bd1 23.Rd1 Qb3=) 22...Bd1 23.Rd1 de5 24.Qd8 Bf6? (24...Kh7 25.fe5 Qb3+–) 25.Be5+– Be5 26.fe5 Qe5 27.Qd4?? (better is 27.Nb6 Ra7 28.Nc4+–) 27...Qd4+= 28.Rd4 a5 29.Nb6 Ra6+= 30.ba5 Ra5 31.Bf1 Ra1 32.Kg2 Rb1 33.Rd8 Rb6 34.Re8 Kg7 35.e5 Na6 36.Bc4 h5 37.Rg8 Kh7 38.Re8 Nc5 39.e6 0–1. Huelle,Gunter (1785) – Randt,Karl Heinz (2000), Leipzig VfB op, 2009.

5.d4 ed4 6.Qd4 Nc6 7.Qe3 Qe7 8.Qe7 Be7 9.a3 a5 10.b5 Nd4 11.0–0–0 (11.Rd1 Nc2 12.Kd2=) 11...c5 (11...Nb3 12.Kb1+=) 12.Nd5 (better is 12.e3!? Ne6 13.Nd5+/–) 12...Nd5= 13.cd5 Nb3 (better is 13...Nb5!? 14.Bg7 Rg8+=) 14.Kc2+/– a4 15.e3 (15.Bg7!? Rg8 16.Bc3+/–) 15...0–0+= 16.Nf3 f4 17.e4 Bf6 18.Bf6 Rf6 19.Bc4 Na5 20.Ba2 Bg4 21.h4 Bf3 22.gf3 Re8 23.h5 Rh6 24.Rdg1 (better is 24.Rh4!?=) 24...Re5–/+ 25.Kd3 (25.Rh4!? Rhh5 26.Rf4–/+) 25...Reh5–+ 26.Rh5 Rh5 27.e5? (better is 27.Rc1–+) 27...Re5 28.Rg4 g5 29.Bb1 (29.Rg1 h5–+) 29...h5 30.Rg2 Kg7 (30...Rd5 31.Kc3–+) 31.Kc3 Kh6 (better is 31...Rd5!? 32.Bc2–+) 32.Be4 b6 33.Rg1 Nb3 34.Rh1 Nd4 35.Kd3 Nb5 36.Kc4 Na3 37.Kc3 b5 38.Ra1 b4 39.Kd3 g4 40.fg4 hg4 41.Rh1 Kg5 42.Rh7 c4 43.Kd4 c3 44.Rg7 Kf6 45.Rg6 Ke7 46.Rg7 Kf8 47.Rg4 Re4! 48.Ke4 c2 49.Rg1 b3 50.Kd3 b2 51.Kc3 b1Q 52.Rb1 cb1Q 53.Kd4 Qb3 54.Ke4–+ Qc4 55.Kf5 Kf7 56.f3 Qd5 57.Kf4 Qe5 58.Kg4 Nc2 59.f4 Qe4 60.Kg5 a3 61.f5 a2 62.f6 Qe5 63.Kh6 Qf6 64.Kh5 Qf5 65.Kh6 Qh3 66.Kg5 a1Q 67.Kf4 Qd4 68.Kg5 Qe5# 0–1. dtpwaldi (1690) – doronlimor (1705), internet, 2013.

5.d4 e4 6.d5 g6 7.e3 Bg7 8.Qc2 0–0 9.Nge2 a5 10.b5 Nbd7 11.a4 Nc5 12.Nf4 g5 13.Nh3 h6 14.Be2 b6 15.0–0–0 Bd7 16.Kb1 Qe7 17.Ka2 Rae8 18.Ka3 Kh8 19.Na2 Ng4 20.Bg7 Qg7 21.Qc3 f4 22.Qg7 Kg7 23.ef4 gf4 24.Rhe1 (better is 24.Nc3!?–/+) 24...f3 25.gf3 ef3 26.Bf1 Nh2 27.Ng1 Nf1 (27...Re1 28.Re1 Rf4 29.Bh3 Bh3 30.Nh3 Rc4 31.Re3–+) 28.Rf1? (28.Re8 Re8 29.Rf1 Bg4–+) 28...Re2! 29.Rde1 (29.Ne2 fe2 Double attack (29...fe2 Passed pawn)) 29...Re1 30.Re1 Bg4 31.Re3 Rf4 32.Rc3 h5 33.Nc1 h4 34.Nd3 Nd3 35.Rd3 h3 36.Nh3 Bh3 37.Kb3 (37.Re3 Kf6 38.Kb3 Bf1–+) 37...Bf5 (better is 37...Bf1 38.Rc3–+) 38.Re3 Kf7 39.Kc3 Bg4 40.Re1 Rf5 41.Rg1 Bh5 42.Kd3 (42.Rh1 Re5–+) 42...Re5 43.Rh1 Bg6 44.Kc3 Re2 45.Rh2 Rc2 46.Kb3 Bd3 47.Ka3 (47.Rh4 Rf2 48.Kc3 Bc2–+) 47...Rc4 (47...Bc4 48.Rh7 Kf6 49.Rf7 Ke5 50.Re7 Kd4 51.Re4 Kc5 52.Rc4 Rc4 53.Kb3 Rb4 54.Kc3 Ra4 55.Kd3 Rb4 56.Ke3 Rb3 57.Ke4 a4 58.Kf5 a3 59.Kg4 a2 60.Kf5 a1Q 61.Kg5 Qg7 62.Kf5 Rb4 63.Ke6 c6 64.dc6 Rf4 65.c7 Rf6) 48.Rh3 (48.Kb3 Rb4 49.Kc3 Be4–+) 48...Be4 49.Rh4 Bd5 50.Rh7 Kg6 51.Re7 Rc2 52.Rd7 Ra2# 0–1. tyop (1730) – dragage (1915), internet, 2013.

5.Nd5 Nbd7 6.d3 c6 7.Nc3 d5–/+ 8.Qb3 d4 9.Nd1 c5 10.e3–/+ b6 11.b5 Bb7 12.f3 Bd6 13.e4 fe4 14.fe4 0–0 15.Nf3 Qe7 16.Nf2 h6 17.Be2 Rf7 18.Bc1 Nf8 19.a4 Ne6 20.a5 Raf8 21.Bd2 Nh5 22.a6 Bc8 23.0–0–0 Nhf4–/+ 24.Bf1 Bd7 25.Re1 Bc7 26.h3 Bb8 27.Ng4 Nd8 28.Ngh2 Bc7 29.Qd1 Nde6 30.g3 Ng6 31.h4 Bb5 32.cb5+= c4 33.Kb2?? c3–+ 34.Bc3 dc3 35.Kc3 Bd6 36.Kb2 Bb4 37.Nd2? Qc5 38.Qc2 Qd4 39.Ka2 Rc7 40.Qd1? Rfc8 41.Nc4 Be1 42.Qe1 Rf8 43.Ng4 Qc5 44.h5 Ne7 45.Qb1 Nd4 46.Na3? Nc8 47.Rh2 Nd6 48.Rb2 Rf3 49.Qd1 Qc1 50.Be2 Qd1 51.Bd1 Rd3 52.Ba4 Rg3 53.Ne5 Ne4 54.Nb1 Nc3 55.Nc3 Rcc3 56.Bd1 Ra3 57.Kb1 Rg5 58.Nc4 Rd3 59.Ba4 Rc5 60.Rb4 Nf3 61.Nb2 Rd4 62.Bb3 Kf8 63.Nc4 Rdc4! (63...Rdc4 64.Bc4 Nd2 65.Kc2 Nc4–+) 0–1. Althoff,Guntram (2140) – Eibelshaeuser,Stefan, Hessen–ch VM, 2004.

5.Nf3 Nc6 6.b5 Na5 7.e3 Nc4?? (better is 7...a6=) 8.Bc4+– e4 9.Nd4 c5? (9...d5 10.Be2+–) 10.Nde2 (10.bc6 bc6 11.Nc6 Qb6+–) 10...g6? (10...d5 11.Bb3+–) 11.Ne4! Bg7?? (11...fe4 12.Ng3 Combination; 11...Ne4 12.Bh8 Pinning (12.Bh8 Deflection; 12.Bh8 Clearance)) 12.Nf6+– Bf6 13.Bf6 Qf6 14.0–0 b6 (14...Be6 15.Be6 Qe6 16.d4+–) 15.Qb3 Bb7 16.Bd5 Bd5 17.Qd5 Rd8 18.Nf4 g5 (18...Qf7 19.Qf3+–) 19.Ne6 Rd7 20.Qa8 (better is 20.Rae1+–) 20...Ke7+= 21.Nc5?? (better is 21.Qc6 Qe6 22.d4+/–) 21...Ra8–+ 22.Nd7 Kd7 23.d4 g4 24.Rfc1 f4 25.Rc6 fe3 26.fe3 Rc8 27.Rac1 Rc6 28.Rc6 Qg5 29.Kf2 Qf5 30.Ke2 Qe4 31.h3 Qg2 32.Kd3 Qh3 33.Rc1 g3 34.Re1 g2 0–1. kannisogoet – sm1991, internet, 2013.

5.Nf3 e4 6.Nd4 Be7 7.b5 0–0 8.e3 Nbd7 9.Ne6 Qe8 10.Nc7 Qf7 11.Na8 Ne5 12.Qb3 Bd8 13.Nb6 ab6 14.a4 Be6 15.Qc2 Bc4 16.Bc4 Nc4 17.0–0 Bc7 18.Rab1 Ne5 19.Qd1 Nd3 20.Ba3 h6 21.Na2 Qa2 0–1. kannisogoet – arian1984, internet, 2014.

5.Nf3 g6 6.g3 Bg7 7.Bg2 0–0 8.0–0 c6 9.Qb3 Kh8 10.d4 e4 11.Nd2 Be6 12.e3 Nbd7 13.d5 cd5 14.cd5 Bf7 15.Nc4 Nb6 Pawn d5, live or die! 16.Nb6 Qb6 17.Rfd1 Rac8 18.Rac1 Ng4 19.a4 a5 20.b5 Ne5 21.Ne2 Nd3 22.Rc8 Rc8 23.Bg7 Kg7 24.Nd4 Qc5 25.Bf1 Bd5 (25...Qd5 26.Qb1 Nc5 27.b6–/+) 26.Qb1 (26.Ne6!? Be6 27.Qe6=) 26...Ne5–/+ 27.Nb3 Qb4?? (better is 27...Bb3!? 28.Qb3 Rc7–/+) 28.Rd5+= Nf3? (28...Rc3 29.Nd2 Qb1 30.Nb1 Rc1+/–) 29.Kg2+– Rc3 30.Nd2 Qa4 (30...Qb1 31.Nb1 Rc1+–) 31.Nf3 ef3 32.Kf3?? (better is 32.Kg1 Qe4 33.Qa2+–) 32...Rb3= 33.Qd1 Qe4 34.Ke2 Rb2 (better is 34...Qc4 35.Ke1 Qb4 36.Ke2 Qc4 37.Kf3 Qe4 38.Ke2 Qc4=) 35.Rd2+/– Qc4 36.Ke1 Qb4 37.Ke2 (better is 37.Bd3+–) 37...Qc4= 38.Kf3 Qe4 39.Ke2 Qc4 ½–½. kannisogoet – 1leon, internet, 2013.

5.Nf3 h6 6.g3 g5 7.d3 g4 8.Nd2 Bg7 9.Bg2 0–0 10.0–0 c6 11.e3 Be6 12.Qe2 Qd7 13.Rfe1 Na6 14.a3 Nc7 15.a4 Kh7 16.b5 Rae8 17.a5 h5 18.b6 ab6 19.ab6 Na6 20.Qf1 Qf7 21.Nb3 Nb4 22.Ra7 c5 23.Rea1 d5 24.Ba3 dc4 25.Nc5 Nc2 26.Ra2 cd3 27.Ne6 Qe6 28.Qd3 Qa2 29.Na2 Na3 30.Qa3 1–0. kannisogoet – tomoo25, internet, 2014.

5.g3 Be6 6.e3 =+.

5.g3 Be7 6.Bg2 c6 7.d4 e4 8.d5 0–0 9.dc6 bc6 10.Nh3 Ng4 11.0–0 (11.Nd5 a5 12.b5 Ne5=) 11...Qe8 (11...Ne5 12.c5 dc5 13.Qb3 Nf7 14.Rfd1+=) 12.Nf4 (12.Nd5 Bd8+=) 12...g5 (12...Qf7 13.Qa4+=) 13.Nh3 Qh5 Black intends f4 14.b5 f4 (14...Qf7 15.bc6 Nc6 16.Nd5+=) 15.Ne4 Nh2?? (15...Ne5 16.gf4 gf4+=) 16.Kh2 (better is 16.Qd4 Qh6 17.Nhg5 (worse is 17.Kh2 g4+–) 17...Bg5 18.Qh8 Kf7 19.Qh7 Qh7 20.Ng5 Ke8 21.Nh7 Nf1 22.Nf8+– (22.Bf1?! Rf5+–)) 16...Bh3+/– 17.Bh3 g4 18.gf4 Qh3 19.Kg1 Rf5 20.Qd4 (20.Nd6?? Rh5 21.Qd5 cd5 22.cd5 Qh2) 20...Kf7?! (20...Qh6 21.Qh8 Kf7+–) 21.Qg7 Ke8 22.Ng3 (better is 22.Qg8!? Kd7 23.bc6 Nc6 24.Qa8 Kc7+–) 22...Rf7? (better is 22...Rf8!?+/–) 23.Qg8+– Rf8 24.Qe6 Rf6?? (24...Nd7 25.Ne4 d5 26.Nd6 Kd8 27.bc6 Nc5 28.c7 Kc7 29.Nb5 Kb7 30.Qe7 Kb6 31.Qc7 Ka6 32.Qc6 Ka5+–) 25.Bf6 1–0. tyop (1685) – thor77, internet, 2013.

5.h3 Be7 6.e3 0–0 7.Nf3 Nc6 8.b5 Nb8 9.Be2 Qe8 10.a4 Ne4 (10...Qg6 11.0–0+=) 11.0–0 Qg6 12.Nh2 f4 13.Ne4 Qe4 14.Bf3 Qg6 15.Ng4? (15.Bd5 Kh8 16.d3 a6=) 15...c6 (15...e4!? 16.ef4 ef3–/+) 16.e4 (16.ef4 Rf4 17.d4 e4=) 16...h5+= 17.Ne5 (17.Nh2!? Bh3 18.Qe2+=) 17...de5–/+ 18.Bh5 Qg5 19.Bg4 Nd7 20.bc6 bc6 21.d4 Rd8 22.d5 cd5?? (better is 22...Nb6 23.Bc8 Rac8–+) 23.Qd5+– Kh8 24.Qa8 Nc5 (24...Nb6 25.Qa7 Bg4 26.hg4 Nc4+–) 25.Bc8 Ne4 (25...Qf6 26.Rfd1 Re8 27.Rd5+–) 26.Qe4 Rc8 27.Be5 Re8 (27...f3 28.g3 Bf6 29.Bf6 Qf6 30.Rfe1+–) 28.Qf4 Qh6 (28...Qg6+–) 29.Qh6 1–0. elev – powuz, internet, 2013.

5.d3 Be7

6.Nf3 0–0 7.g3 Nc6 8.a3 b6 9.Bg2 Bb7 10.0–0 h6 11.b5 Na5 12.e3 Qe8 13.Bh3 Nh7 14.Bg2 g5 (14...Nf6 15.Re1=) 15.Re1 Nf6 16.Rc1 g4 17.Nd2 Bg2 18.Kg2 Rc8 19.d4 e4 20.a4 c6 21.Ne2 d5 22.Nf4 Bd6 23.Ne2 cb5 24.cb5 Nh7 25.Nc3 Qf7 26.Ne2 Ng5 27.Nf4 Bf4 28.ef4 Nf3 29.Nf3 ef3 30.Kh1 Qh5 (30...Nc4 31.Bc3+=) 31.Ba3 Rfe8 32.Re8 (better is 32.Rc8!? Rc8 33.Bb4=) 32...Re8+= 33.Rc7?? (better is 33.Qf1+=) 33...Qh3 34.Qf1 Qf1 0–1. fjanusz52 – vasile48 (1655), internet, 2013.

6.g3 0–0 7.Bg2 c6 8.Nh3 Be6 9.Ng5= Bd7 10.e4 h6 11.Nf3=+ Qb6 12.a3 a5 13.Qb3 Na6?? 14.c5+– (14.c5 Kh7 15.cb6 ab4 16.ab4+–) 1–0. Fredek (2065) – Grijan (1725), Freundschaftspartie, 5m + 0s, 2006.

5.e3

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nc3).

5.e3 Be7 6.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7 6.Nc3).

5.Nf3 Be6

6.d3 Nbd7 7.g3 g6 8.Bg2 Bg7 9.0–0 0–0 10.e3 (10.Ng5!? Bf7 11.Nf7 Rf7 12.Rb1+=) 10...c6= 11.Qe2 Qe7 12.a4 Rae8 13.d4 (13.Ng5 e4 14.d4 Nb6 15.Ne6 Qe6=) 13...h6 (13...Nb6 14.de5 de5 15.Ne5 Qb4 16.Nd3 Qc4 17.Rfc1–/+) 14.de5 de5 15.Rfe1 (better is 15.Ba3!?+=) 15...Qb4–+ 16.Rad1 (16.Bf1 e4 17.Nd4 Ne5 18.Ne6 Re6–+) 16...Bc4 17.Qd2 Nc5 Black prepares the advance e4 18.Nb1 (18.Ne5 Re5 19.Nb1 Qd2 20.Nd2 Re6 21.Nc4 Na4–+) 18...Qd2 (worse is 18...Qa4 19.Ba3 Nfe4 20.Qc1–+) 19.Nfd2 Bf7 20.Nf3?! (20.Ba3 Na4 21.Rc1 e4–+) 20...Nh7 (20...e4!? 21.Nd4–+) 21.a5 e4 22.Nd4 Nd3 23.Re2 (23.Ba3 Ne1 24.Re1 Rd8 25.Bf8 Bf8–+) 23...Nb2 (23...c5!? 24.Red2–+) 24.Rb2 c5 25.Nf5 (25.Rb7 Rd8 26.Ra7 cd4 27.Na3–+) 25...Bb2 26.Nd6 Rd8 27.Be4 (27.Rd2 Bc1 28.Rd1 Nf6–+) 27...Be5 28.Rd2 Rd6 0–1. kannisogoet – f2023, internet, 2013.

6.d3 Be7 7.g3 0–0 8.Bg2 c6 9.0–0 Nbd7 10.e3 Qc7 (10...h6 11.Rc1=) 11.Qe2 (11.Ng5 Bf7+=) 11...Rad8 (11...h6 12.Nh4=) 12.a4 White plans b5 (12.Ng5 Bf7+=) 12...d5 13.Rfc1 (13.Ng5 Bf7 14.Nf7 Rf7 15.cd5 Bb4 16.dc6 bc6=) 13...Bf7 (better is 13...Bb4!? 14.cd5 Bd5 15.Nd5 Nd5+=) 14.cd5= Qb6 (14...Nd5 15.b5=) 15.b5 (15.dc6 bc6 16.b5 cb5 17.ab5 Bb4+/–) 15...cd5 (15...cb5 16.Nb5 e4+/–) 16.a5+/– Qd6 17.Ba3 Qe6?? (better is 17...Qa3 18.Ra3 Ba3+/–) 18.Ng5+– Ba3 19.Ne6 (19.Ra3?! Qd6 20.Qb2 Rc8=) 19...Be6 20.Ra3 1–0. kannisogoet – dragonne66, internet, 2013.

6.d3 Be7 7.g3 Qd7 8.Bg2 Nc6 9.b5 Nd8 10.0–0 Nf7 11.a4 h5 12.e3 g5 (12...0–0–0 13.a5=) 13.Qe2 (13.Ng5!? Ng5 14.Bb7+/–) 13...h4= 14.Rfd1 (14.Nh4!? gh4 15.Bb7=) 14...0–0–0 15.d4 ed4 (15...hg3 16.fg3 Qe8 17.a5=) 16.Nd4 (16.ed4 hg3 17.d5 gh2 18.Nh2 Ne5 19.de6 Qe6+/–) 16...hg3 17.fg3 Kb8 (17...Rdf8 18.c5 (18.Ne6?! Qe6 19.Nd5 Ne5+=) 18...dc5 19.Bc6+/–) 18.Ne6 (better is 18.Qf3!? Ne4 19.Ne6 Qe6 20.Ne4 fe4 21.Qe4 Qe4 22.Be4+/–) 18...Qe6+= 19.Nd5 Ne5 20.Ne7 (20.a5!?+=) 20...Qe7+= 21.Be5 de5 (better is 21...Qe5!? 22.Qf3 Ne4+=) 22.Qf3+= Ne4 23.Qf5 Rd1 24.Rd1 Nc3 25.Rd7 Qa3 (better is 25...Qe8+/–) 26.Qe5?? (26.Qg5 Qa1 27.Bf1 b6+–) 26...Qc1 (better is 26...Qa1 27.Kf2 Qb2 28.Kg1 Ne2 29.Kf1 Qe5 30.Ke2 Qc3–+) 27.Bf1+– Ne2?? (27...Rc8+–) 28.Kg2 Nc3 (28...Rc8 29.Be2 Qc2+–) 29.Qc7 1–0. kannisogoet – kijano19, internet, 2013.

6.d3 Be7 7.g3 Nbd7 8.Bg2 c6 9.0–0 0–0 10.e3 h6 11.Qe2 Kh7 12.a4 White plans b5 12...g5 Black prepares f4 13.b5 Rb8 14.Rfb1 Rg8 (14...d5 15.Nd2=) 15.e4 f4 16.d4 (16.Nd2!?=) 16...fg3 (16...g4 17.bc6 gf3 18.Bf3 bc6 19.d5 cd5 20.cd5–+) 17.fg3 (better is 17.d5 gh2 18.Kh2 cd5 19.cd5–/+) 17...Bg4?? (better is 17...g4 18.Nh4 ed4–/+) 18.Qd3 White prepares the advance d5 18...Kh8 19.d5 Nc5 20.Qc2 cb5 21.ab5 Qb6 22.Kh1 Bh5 23.Ra2 Bg6 Will e4 fall? 24.Qc1?? (better is 24.Nd2!?=) 24...Nce4?? (better is 24...Nd3 25.Qf1 Nf2 26.Kg1 N2e4 27.Kh1 Nf2 28.Kg1 N6g4–+) 25.Ne4+= Ne4 26.Rba1? (better is 26.Ne5 de5 27.Be5 Bf6 28.Bb8 Rb8 29.Qf1–/+) 26...Nf2–+ 27.Kg1 Nh3?? (27...Nd3 28.c5 Qb5–+ (28...Nc1 29.cb6 Na2 30.ba7–+)) 28.Kh1= Nf2 29.Kg1 Nd3 30.Kh1 (30.c5 Qb5 31.Qc3–+) 30...Nc1 31.Bc1 Ra8 32.Nd2 Rgf8 33.Ne4 (33.Ba3–+) 33...Be4 34.Be4 Rf2 (better is 34...Qd4 35.Bf3 Rf3 36.Bg5–+) 35.Rf2 (35.Bg2 Ra2 36.Ra2 Qd4–+) 35...Qf2 36.Ba3 Qd4 37.Bc2 Qa1 0–1. kannisogoet – myncio (1730), internet, 2013.

6.e3 Be7 7.d4 e4 8.Nd2 d5 9.c5 c6 10.Qb3 0–0 11.g3 h6 12.Bg2 Ng4 13.0–0 g5 14.a4 Nd7 15.h3 Ngf6 16.Ne2 a6 17.b5 ab5 18.ab5 Ra1 19.Ra1 Qc7 20.b6 Qb8 21.Ra7 Nh5 Black prepares the advance f4 22.Qd1 f4 23.ef4 gf4 24.Nf4 Nf4 25.g4?? (25.gf4 Qf4 26.Qe2= (26.Rb7? Qf2 27.Kh1 e3–+)) 25...Nd3 (better is 25...Ng2!? 26.Qf1 Nf4 27.Ra3–+) 26.Bc1 (26.Ba1 N7c5! 27.dc5 Bc5–+) 26...Nf2 27.Qe2 Nd3 28.Ba3 Nb6! 29.Nb3 (29.cb6 Ba3 Combination) 29...Nc4 (better is 29...Qa7 30.Bc1 Nc1 31.Nc1–+) 30.Ra4 (30.Na5 Qa7 31.Nc4 Qa4–+) 30...Nf4 (better is 30...Qg3 31.Bc1 Rf2 32.Qf2 Qf2 33.Kh1–+) 31.Qa2 Na3 (31...Ne3 32.Kh1 Nfg2 33.Qe2–+) 32.Ra3 Ng2 33.Kg2 Qf4 34.Ra8 Qf3 35.Kg1 Qe3 36.Kh1 Bc8 37.Qg2 Qb3 38.h4 Qf3 39.Qf3 ef3 40.Kg1 Bg4 41.Rf8 Kf8 42.Kf1 Bh4 0–1. kannisogoet – antonius62, internet, 2013.

6.e3 h6 7.d4 e4 8.Nd2 Bf7 9.d5 Nbd7 10.a4 Be7 11.Be2 0–0 12.0–0 Bg6 13.Qb3 Kh7 14.Rfd1 Ne5 15.Bf1 (15.Nb5 Bf7+=) 15...Neg4 (15...a5!?=) 16.Nb5 a6 17.Nd4 Nh5? (better is 17...Qd7!?+/–) 18.Ne6+– Qd7 19.Nf8 Rf8 20.g3 Bg5 Black prepares f4 21.h3 Ngf6 (21...Ne5 22.b5+–) 22.h4 Bh4 23.gh4 f4 24.ef4 (24.f3 ef3 25.Nf3 Qg4 26.Bg2 fe3 27.Qe3 Re8+/–) 24...Nf4? (better is 24...Qg4 25.Kh1 Qh4 26.Qh3 Qf2+/–) 25.Qg3 (better is 25.f3+–) 25...N6h5+= 26.Qe3 Qg4 27.Kh2 Qh4 28.Kg1 Rf5?? (better is 28...Qg5 29.Kh1 Qh4 30.Kg1 Qg5 31.Kh2 Qh4 32.Kg1=) 29.Ne4+– Qg4? (better is 29...Rg5 30.Ng5 Qg5 31.Kh2 Qh4 32.Bh3 Bf5+/–) 30.Ng3 Nh3 31.Bh3 Qh3 32.Nf5 Qf5 33.Kf1 Qg4 34.Rd4 Qf5 35.Re1 Nf6 36.Rf4 Qh5 37.Bf6 (37.Bf6 Bf5 38.Qg3 Qh3 39.Kg1 Qg3 40.fg3 gf6 41.Rf5+–) 1–0. kannisogoet – arnold99, internet, 2013.

5.Nf3 Be7

6.d4 e4+= 7.Ng5 h6 (7...Ng4!? 8.Nh3 e3+=) 8.Nh3= 0–0 9.Nf4 e3 (9...Nc6 10.b5 Na5 11.Qa4+=) 10.fe3+= Ng4 11.Qd3 Bg5 (11...Re8 12.g3 Na6 13.a3+/–) 12.g3 Re8 Attacking the backward pawn on e3 13.Ncd5 c6 (13...Na6 14.a3 c6 15.h3 cd5 16.hg4 Bf4 17.ef4 dc4 18.Qc2+/–) 14.h3+/– cd5 15.hg4 dc4 (15...Bf4 16.ef4 Be6 17.cd5 Bd5 18.Rh5+/–) 16.Qc4+– Kh7 17.gf5 (17.Bg2 Nc6 18.gf5 Bf5+–) 17...Bf5 18.Kf2 (better is 18.Bg2!? Qe7 19.Nd5+/–) 18...Bf4+/– 19.gf4 (19.ef4!? d5 20.Qb3+/–) 19...d5= 20.Qb3 Nc6 (better is 20...Nd7!?=) 21.Bg2+/– Qe7 (better is 21...Be4 22.Be4 Re4+/–) 22.b5 (better is 22.Bd5 Nb4 23.Ba3+/–) 22...Na5= 23.Qa3 Qa3 24.Ba3 Nc4 25.Bc1 (worse is 25.Bd5 Na3 26.Bb7 Rab8+=) 25...Be4 26.Be4 Re4 27.Rh3 Rae8 28.a4 ½–½. Barbarickiy,Yuri – Rechapov,Nikolay, Rtng–Tournament, 2008.

6.g3 0–0

7.Bg2 Nc6 8.b5 Nb8 9.0–0 Nbd7 10.Qb3 Nc5 11.Qd1 Kh8 12.d4 ed4 13.Nd4 Nfe4 14.Ne4 fe4 15.e3 (15.Nb3 Nb3 16.ab3 e3+=) 15...Bf5 (15...Qe8 16.Nb3 Nd3 17.Bd4+=) 16.a4 (better is 16.Nf5!? Rf5 17.Be4 Ne4 18.Qg4+=) 16...Bg6 17.Qc2 Qd7 18.Ba3 Nd3 19.Rfd1? (better is 19.Qd2+=) 19...Rf2–+ 20.Rd2 Raf8 21.Bf1? (21.Rf2 Rf2 (21...Nf2?! 22.c5–/+) 22.Qc3 Bg5–+) 21...Rd2 (better is 21...Bg5 22.Rf2 Be3 (22...Nf2?! 23.Qd2–+) 23.Bd3 ed3–+) 22.Qd2 Nf2 23.Ne2 Nh3 (better is 23...Bf6!? 24.Bb2 Bb2 25.Qb2 Nd3–+) 24.Bh3–/+ Qh3 25.Nf4 Qg4 26.Rf1 h6 (26...Bf7–/+) 27.Qf2 (27.Qa5 Rc8=) 27...Bh5 (27...Bf5 28.Qd2 b6 29.Bb2–/+) 28.Bb2 (28.Qg2!? Qf5 29.Nh5 Qh5 30.Qe4+=) 28...Kg8–/+ 29.Qg2 g5?? (29...Bg6 30.Qd2 Bf7 31.Nd5–/+) 30.Nh5?? (better is 30.h3 Qf3 31.Rf3 Bf3 32.Qd2 gf4 33.Qd5 Rf7 34.ef4+–) 30...Rf1+= 31.Qf1 Qh5 32.Bd4 b6 33.h4?? gh4–+ 34.gh4 Qg4 35.Qg2 Qg2 36.Kg2 Bh4 37.Kh3 Bg5 38.Kg4 Kf7 39.Kh5 Ke6–+ 40.Bg7? d5 41.cd5 Kd5 42.Bd4 Kc4 43.Be5 Be3 44.Bc7 Kb4 45.Bb8 Bc5 46.Bg3 Ka4 47.Be1 Kb5 48.Kh6 Kc4 49.Kg6 a5 50.Kf5 a4 51.Ke6 a3 52.Ke5 a2 53.Ke4 1–0. kannisogoet – rd26, internet, 2013.

7.Bg2 e4 8.Nd4 a6 9.a4 c5 10.bc5 dc5 11.Nb3 Nc6 12.0–0 Nd4 13.Nd4 (13.d3!? Be6 14.de4 Bc4 15.Nd2=) 13...cd4–/+ (13...Qd4?! 14.d3 ed3 15.Nd5 Qb2 16.Ne7 Kh8 A) 17.Nc8?? de2 (worse is 17...Rac8 18.Qd3 Rcd8 19.Qf5+=) 18.Qc1 ef1R 19.Kf1 Qc1 20.Rc1 Rac8–+ (worse is 20...Rfc8 21.Bb7 Ne4 22.Ke2–+); B) 17.Qd3+=) 14.e3?? (better is 14.Na2–/+) 14...dc3–+ 15.dc3 (15.Bc3 Be6 16.Rc1 Qd3–+) 15...Qc7 16.Qe2 Be6 17.Rfd1 Bc4 18.Qc2 Bd3 19.Qb3 Kh8 20.Bf1 Bf1 21.Kf1 Ng4 22.Rd4 Nh2 23.Kg2 Nf3 24.Rc4 Qd7 25.Rd1 Qe8 26.Rc7 Bf6 27.Qb7 Rb8 28.Qa7 Rb2 29.Rdd7 Qg6 30.Kf1 Ne5 31.Rd1 Rbb8 32.Kg2–+ Qg4 33.Rh1 Qf3 34.Kg1 Rb1 35.Kh2 Qh1# 0–1. kannisogoet – mirek188, internet, 2013.

7.Bg2 Be6 8.d3 c6 9.0–0 Nbd7 10.a4 h6 11.e3 g5 12.Qe2 g4 13.Nd2 h5 (13...d5 14.b5=) 14.d4 White intends c5 (14.f4 gf3 15.Nf3 e4 16.de4 fe4+/–) 14...h4 15.Rfd1 Kg7 16.de5 de5 17.c5 (better is 17.b5+=) 17...Nd5?? (better is 17...h3 18.Bh1 a5+=) 18.Nd5+/– cd5 19.Nf1 Nf6 Black plans e4 20.f4?? (better is 20.Be5 a5 21.Qb2+–) 20...e4 21.Be5 Kg6 22.h3 (22.Bd4 hg3 23.hg3 a5+=) 22...Rh8 23.hg4 Ng4 (better is 23...fg4 24.gh4 Rh4+/–) 24.Bf3?? (better is 24.Bh8 Qh8 25.Bh3+/–) 24...Ne5–+ 25.fe5 Bg5?? (25...ef3 26.Qf3 a5 27.Rd4–+) 26.Ra2? (26.Bg2 hg3 27.Ng3 Qc7–+) 26...Qf8 (26...ef3 27.Qf3 a5 28.gh4 Rh4 29.ba5–+) 27.Qh2? (better is 27.Bg2–/+) 27...Qh6 28.Rad2 Be3 29.Ne3 Qe3 30.Qf2 Qf3 31.Qf3 ef3 32.Kf2 hg3 33.Kf3 Rh3 34.Kg2 Rah8 35.Rd5 Bd5 36.Rd5 f4 37.Rd6 Kf7 38.Rf6 Ke7 39.Rf4 Ke6 40.Rf5 Kf5 0–1. kannisogoet – dinbor, internet, 2013.

7.Bg2 Qe8 8.0–0 Bd8 9.e3 e4 10.Nd4 Nbd7 11.d3 b6 (11...a5 12.a3=) 12.de4 c5? (better is 12...fe4 13.Nc6 Bb7 14.Nd8 Rd8+=) 13.bc5 dc5 14.Ndb5 Nh5?? (better is 14...Rb8 15.ef5 Ne5+–) 15.Nd6 (15.Qd5 Qf7 16.Qa8 Be7 17.ef5 Ndf6+–) 15...Qg6 (15...Qe5 16.f4 Qe7 17.Qd5 Kh8 18.Qa8 Qd6 19.Qc8+–) 16.Nc8 (better is 16.ef5 Qf6 17.Ba8 Ba6+–) 16...Rc8 17.ef5 (better is 17.Qd7 Rc7 18.ef5 Rd7 19.fg6 Rd2 20.gh7 Kh7+–) 17...Rf6 (17...Qe8 18.Nb5 Be7+–) 18.fg6 (18.fg6 Rf8 19.Qd7+–) 1–0. kannisogoet – smaxmm, internet, 2013.

7.Bg2 Qe8 8.0–0 Qg6 9.e3 Nc6 10.b5 Nd8 11.d4 e4 12.Nd2 Qh6 13.d5 Ng4 14.h3 Nf6 15.Ne2 Nf7 16.Nf4 Ng5 17.h4 Nf7 18.f3 g5 19.fe4 (better is 19.hg5 Ng5 20.Bd4=) 19...gf4–/+ 20.gf4 (20.ef4!? Re8–/+) 20...fe4 21.Ne4 Ne4 22.Be4 Qh4 23.Rf2 (23.Qd4 Qg3 24.Kh1 Qh3 25.Kg1 Qg4 26.Kh2 Qh5 27.Kg1=) 23...Bf6?? (better is 23...Ng5 24.Rg2 Kf7–+) 24.Rh2 (24.Rg2 Ng5 25.Bf6 Rf6+–) 24...Bh3 (better is 24...Qg3 25.Rg2 Qg2 26.Kg2 Bb2 27.Bh7 Kg7+=) 25.Bg2?? (25.Bf6 Qf6 26.Rh3+/–) 25...Qg4?? (better is 25...Bb2 26.Rh3 Qf6–+) 26.Bf6 Qd1 27.Rd1 Bf5 28.Bf3 Nd8 29.Rg2 Kf7 30.Bh4 Rg8 31.Bh5 Kf8? 32.Be7! Ke7 33.Rg8 a6 34.a4 ab5 35.ab5 c6 36.Kh2 cb5 37.Rdg1 Ra2 38.R1g2 Rg2 39.Kg2 bc4 40.Bd1?? c3–/+ 41.Rg7 Kf6?? 42.Rc7+– Be4 43.Kf2?? Bd5+/– 44.Rc3 Bc6 45.Bf3 d5 46.e4?? de4= 47.Be2 Ne6+= 48.Kg3 Nd4 49.Bc4 b5 50.Bf1 Nf5 51.Kg4 (51.Kg4 Bd7 52.Kh5–+). kannisogoet – smaxmm, internet, 2013.

7.Bg2 c6

8.0–0 Na6 9.b5 Nc5 10.a4 Ne6 11.d4 e4 12.Nd2 d5 13.c5? (13.e3 c5+=) 13...Qc7 (better is 13...Nd4 14.Rc1 Ne6–+) 14.e3= Ng5 15.a5 Nh5?? (better is 15...cb5 16.Nb5 Qc6=) 16.b6+– ab6 17.ab6 (17.Qh5?! bc5 18.dc5 Ra5+/–) 17...Qb8 18.Qh5 Ra1 19.Ra1 Be6 20.f4 (20.Ra7 Qc8 21.Qe2 Qd7+–) 20...Bf7? (20...ef3 21.Bf1 Re8+/–) 21.Qe2 Ne6 22.Qd1 Bf6 23.Ra7 Nd4 24.ed4 (better is 24.Nce4!? fe4 25.Bd4 Bd4 26.ed4 Be6+–) 24...Bd4 25.Kh1 Bc5 26.Na4 (better is 26.Ra1!? Bb6 27.Nb3+–) 26...Bb6+/– 27.Nb6 Qa7 28.Nd7 (better is 28.Qg1 Bh5 29.Qd4+/–) 28...Ra8 29.Qc2 d4 (29...Qf2 30.Qc1 d4–/+) 30.Ne5 Bd5 31.Nb3? Qb6 32.Nc5? Qb4 33.Bd4?? Qe1 34.Bg1 Ra1 35.Nf3 ef3 36.Bf3 Qg1# 0–1. kannisogoet – voronyi, internet, 2013.

8.0–0 Nbd7 9.Qb3!? =.

8.0–0 Nbd7 9.e3 e4–/+ 10.Nd4 Ne5 11.Qb3 Kh8 (11...c5 12.bc5 dc5 13.Ndb5–/+) 12.a4 (better is 12.f3 c5 13.Nc2+=) 12...Be6?? (better is 12...c5 13.bc5 dc5–/+) 13.Ne6+– Qd7 14.Nf8 Rf8 15.Rfd1 Nd3 16.Bf1 Ne5 17.d4 Nf3 18.Kh1 (18.Kg2 d5+–) 18...Qe8 19.Bg2 (19.h3!? Qh5+–) 19...Qh5 20.h4 (better is 20.h3+–) 20...Ng4= 21.Qc2?? (21.Bf3 Nf2 22.Kg1 Qf3 23.Kh2 Bh4 24.Rg1 Rf6 25.Rg2 Bg3 26.Kg1 Rh6 27.Rh2 Bh2 28.Kf1 Nd3) 21...Nh4 (21...Bh4 22.Bh3 Bg3 23.Kg2 Nf2 24.Qf2 Bf2 25.Kf2 Qh3 26.Rh1–+) 22.Kg1?? (22.Bh3 f4 23.gh4 Qh4 24.Kg2 fe3 25.Ne4 Nf2 26.Rh1 Ne4 27.Kg1–+) 22...Nf3 23.Kf1 Ngh2 24.Ke2 Nd4 25.Kd2 Nc2 26.Kc2 Nf3 27.Rh1 Qf7 28.Ne2 Qc4 29.Nc3 Qd3 30.Kb3 Bf6 31.Bf3–+ ef3 32.Rad1 Qa6 33.b5 cb5 34.ab5 Qb6 35.Rd5 a5 36.Rhd1 Be7 37.Na4 Qc7 38.Rc1 Qd7 39.Nb6 Qe6 40.Rc7 Qe4 41.Rc4?! Qe6 42.Rc7 Bf6 43.Bf6 gf6 44.Rd7 a4! 45.Ka3 Qe4 46.R7d6?? Qb1 47.Rd3? Qa1 48.Kb4 Qb1 49.Kc5?? a3! 50.Ra3 Qc2 51.Kd5 Qd2 52.Ke6 Re8 53.Kd7 Rd8! 54.Kd8 Qd6 55.Nd7 Kg7 56.Ra7 Kf7 57.Rb7–/+. kannisogoet – pionul, internet, 2013.

8.0–0 Nbd7 9.Ng5 Nb6 10.d3 Ng4 11.Nf3 e4 12.de4 Ne5 (12...fe4!? 13.Ne4 Nc4+=) 13.Ne5+= de5 14.Qd8 (14.c5!? Qd1 15.Nd1+=) 14...Rd8= 15.c5 Nc4 16.Bc1 a5 17.ba5 (17.b5 cb5 18.ef5 Rb8 19.Bd5 Kf8+=) 17...Bc5 18.ef5 Bd4 19.Ne4? (better is 19.Bg5 Re8 20.Rfc1=) 19...Ba1–+ 20.Bg5 Bf5 (20...Rd5 21.Ra1 Bf5 22.Rc1–+) 21.Ra1 (21.Bd8 Bd4 22.Bb6 Be4 23.Be4 Nd2 (worse is 23...Nb6 24.ab6 Ra2 25.e3=) 24.Bc6 bc6–/+) 21...Rd4 22.Nc5 Ra5 (22...Na5 23.e4 Bc8 24.Be3–+) 23.Nb7 Rb5 (23...Ra2 24.Bd5 cd5 25.Ra2–/+) 24.Nd8 (24.Bc6 Rb6 25.e3 Rd3=) 24...h6 (24...Bb1 25.Bc6 Rd1 26.Kg2 Ra5=) 25.Be3?? (better is 25.Nc6 hg5 26.a4=) 25...Rd8–+ (25...Ne3?! 26.Nc6 Nc2 27.Nd4 ed4 28.Rc1–+) 26.Rc1 (26.Bc6 Rb2–+) 26...Na5 (26...Ne3!? 27.fe3 Ra5 28.Bc6 Ra2 29.e4–+) 27.a4 Rb4 28.h3 e4 29.g4 Bg6 30.f3 Nc4 31.Bf2 e3 32.Be1 Nd2 33.Rc6 Be8 34.Ra6 Ba4 35.f4 Bb5 36.Ra7 Rb1 37.Kh2 Re1 38.Rb7 Be2 39.Bc6 Bf3 40.Kg3 Bc6 41.Rb6 Be4 42.Rb2 Rf1 0–1. kannisogoet – voronyi, internet, 2013.

8.0–0 Be6 9.d3 Qd7 10.a4 Kh8 11.e3 Bg8 12.Qe2 Qe6 Black intends e4 13.Ng5 Qd7 14.Nf3 Qe8 15.d4 White prepares c5 15...e4 16.Nd2 Nbd7 17.Rae1 d5 18.c5 b6 19.f3 bc5 20.bc5 (worse is 20.dc5 Rb8 21.Ba3 a5 22.ba5 Nc5–/+) 20...ef3 21.Nf3 a5 22.Rb1 Ng4 23.h3 Ngf6 24.Nh4 Ne4 25.Ne4 (worse is 25.Rf5 Ng3 26.Qg4 Nf5 27.Nf5 Bf6–+) 25...fe4 26.Rf8 Qf8 27.Rf1 Qe8 28.Nf5 Bf6 29.Nd6 Qg6 30.Qf2 Rb8 31.Bc1 h5 32.Qf4 (32.Bd2 Bd8+=) 32...Rb4 33.Nf5 (33.Ne4 Be5 34.de5 de4 35.Qh4=) 33...Ra4 (33...Be6 34.Nd6+=) 34.Nh4?? (better is 34.Qd6!? Qe8 35.Qc6+=) 34...Qg5 (34...Qh6 35.Qc7 Bh4 36.gh4 Qe6–/+) 35.Nf5? (better is 35.Qd6 Rc4 36.Kh2 Rc1 37.Rc1 Qe3 38.Rd1 Bh4 39.gh4=) 35...Qf4–+ 36.Rf4 (better is 36.gf4 Ra2 37.Nd6–+) 36...Ra1 37.Rf1 a4 38.Bb2 Rf1 39.Kf1 Nc5! 40.Nd6 Nd3 41.Ba3 Be7 42.Ke2 Bd6 43.Bd6 Nc1 44.Kd2–/+ Nb3 45.Kc2 g5 46.Bf1 Kh7 47.Ba6 Kg6 48.Bb7 Be6 49.Bc6–/+ Kf5?? 50.Ba4?? Na5+= 51.Bb4 Nc4 52.Bd2 h4 53.g4 Kf6 54.Bc6 Ke7 55.Kd1? Kd6 56.Ke2?? Kc6 57.Kf2 Kb5 58.Be1 Ka4 59.Kg2 Kb3 60.Bf2 Kc2 61.Kg1 Kd2 62.Kf1 Kd3 0–1. kannisogoet – jurekgogo, internet, 2013.

5.g3 Nc6

6.b5 Nb8 7.Bg2 =.

6.b5 Nd4 7.e3 (7.Bh3 Ne4=+) 7...Ne6 8.Bg2 Be7 9.Nge2 0–0 (9...a6 10.f4=) 10.0–0 Rb8 (10...a6 11.ba6 Ra6 12.d4=) 11.d4 (11.d3 f4=) 11...e4 12.a4 c6 13.f3 d5 14.fe4 fe4 15.c5 (15.Qb3 Ra8=) 15...Ng4 16.Bc1 Bg5 17.Nf4 Bf4 18.ef4 Nf6 19.Be3 a6 20.h3 Bd7 21.b6 Qe7? 22.g4 Ne8 23.Qd2 Qh4? 24.Bf2?? Qh6+= 25.g5 Qh5 26.Bg3 Nd8 27.f5 Bf5?? 28.Bb8+– Bh3 29.Rf8 Kf8 30.Rf1 Kg8 31.Qf4 Bg2 32.Qf8 (32.Kg2?! Ne6 33.Qf5 Qg5 34.Qg5 Ng5+–) 1–0. Fredek (2065) – Grijan (1725), Freundschaftspartie, 5m + 0s, 2006.

6.b5 Ne7 7.Bg2 c6 8.d4 e4 9.Nh3 d5 10.Qa4 Bd7 11.0–0 cb5 12.cb5 Ng6 13.Qb3 Be6 14.f3 Bd6 15.Ng5 Bg8 16.fe4 fe4 17.Bh3 h6?? (better is 17...Nf8 18.Bg2 h5+=) 18.Ne6+– Qe7? (better is 18...Be6 19.Be6 Ne7 20.Bd5 Ned5 21.Nd5 Rf8+–) 19.Nd5 Nd5 20.Qd5 e3 21.Qe4 Bh7 (21...Be6 22.Be6 (22.Qe6?! Qe6 23.Be6 Nf8 24.Bf7 Kd8+–; worse is 22.Qg6 Bf7 23.Rf7 Qf7 24.Qd6 Rd8 25.Qe5 Qe7+–) 22...Nf8 23.Rf7 Qe6 24.Rf8 Ke7 25.Qb7 Kf8 26.Qa8 Qe8 27.Rf1 Ke7 28.Qb7 Kd8 29.Rc1+–) 22.Ng7 Kd8 23.Ne6 Ke8 24.Qf3 Bg8 25.d5 Rh7 (25...Be6 26.Be6 Rf8+–) 26.Qg4 Bf7 27.Bf6 Qd7 (27...Ne5 28.Qd4 Be6 29.Be7 Ke7 30.Be6 Kd8+–) 28.Ng7 (28.Ng7 Kf8 29.Qd7 Bg3 30.hg3+–) 1–0. pcmvr (2765) – snowcert (2480), net–chess.com, 2014.

4.c5 Nf6

5.Qb3 A) 5...dc5 6.b5 Qd5 (6...Qe7 7.Na3 Be6 8.Nc4 Nbd7 9.Nf3) 7.Nf3 Qb3 8.ab3 e4 9.Ne5; B) 5...Nc6 6.e3 e4 7.Nh3 dc5 8.Ng5 Qe7 9.Bc4.

5.Nc3 dc5 6.b5 Qd6 7.Nh3 Nbd7 8.e3 Nb6 9.f4.

5.cd6 cd6 6.e3 (6.Nc3 Nc6 7.Nf3 Nb4 8.d4 Qa5 9.de5) 6...Nc6 (6...Qb6 7.b5 Be6 8.Nc3 Nbd7 9.Nf3) 7.b5 Nb4 (7...Na5 8.Nc3 Be7 9.Nf3) 8.a3 (8.Qb3 a5 9.Nc3) 8...Nbd5 9.Bc4 (9.Nf3=) 9...Be6 10.d3 Be7 11.e4? (11.Nf3 Rc8=) 11...Nf4 (better 11...fe4!? 12.de4 Ne4–+) 12.Be6 Ne6 13.ef5 Nd4 (better 13...Nf4!? 14.g3 N4d5=) 14.Bd4+– ed4 15.Qa4 0–0 16.Qd4 Qd7 17.Qc4 Kh8 18.Nf3 Rac8 19.Qe6?? (better 19.Qf4 Qb5 20.Nbd2=+) 19...Qe6 (better 19...Rc1!? 20.Ke2 Rh1 21.Qd7 Nd7 22.d4–+) 20.fe6 Rc1 21.Kd2 Rh1 22.Ng5 (22.b6–+) 22...Ng4 23.Nf7 Kg8 24.f3 Bf6 25.Ra2 Rb1 (better 25...Nh2 26.Nd6 Rb1 27.Kc2–+) 26.fg4 Rb2 (better 26...Re8!? 27.Nd6 Re6 28.Ne4–+) 27.Rb2 Bb2 28.Nd6 Bf6 (better 28...Ba3!? 29.e7 Bd6 30.ef8R Kf8–+) 29.Nb7 Rb8 30.Nd6 Kf8 31.g3 Ke7 32.Ne4 Ke6 33.a4 Rd8 34.g5 Bd4 35.a5? (35.h4 a6 36.ba6 Ra8–+) 35...Kf5 (better 35...Rb8!? 36.b6 ab6 37.ab6 Rb6 38.h3–+) 36.h3 Re8?? (better 36...Rb8–+) 37.Nd6+– Kg5? (better 37...Ke6 38.Ne8 Kd7+–) 38.Ne8+– Be5 39.b6 a6 (39...ab6 40.a6 Bb8+–) 40.b7 (40.Nc7 Bg3 41.Na6 Bd6+–) 40...Bb8?? (better 40...Kg6+–) 41.Ng7 Bg3 42.Ne6 Kh4 43.d4 Kh3 44.Ng5 Kg4 45.Nh7 Kf5 46.Kd3 Ke6 47.Ng5 Kd7 48.Ne4 Bc7 (48...Bh2+–) 49.Nc5 Kc6 50.Kc4 (better 50.Na6 Bg3 51.Nc5 Bb8+–) 50...Bd6 51.d5 Kc7 52.Ne4 (52.Na6!? Kb7 53.Nc5 Ka7+–) 52...Be5 53.Nc5 (better 53.d6 Kb7 54.Kd5 Bf4+–) 53...Bh2?? (53...Bd6 54.Na6 Kb7 55.Nc5 Ka7+–) 54.Na6+– Kb7 55.Kb5 Bd6 56.Nc5 Ka7 57.Kc6 Bh2 58.a6 Bg3 59.d6 Bd6 60.Kd6 Kb6 61.Kd5 Ka7 62.Kc6 Ka8 63.Kb6 Kb8 64.Na4 Ka8 65.Ka5 Ka7 66.Nb6 (66.Nc3 Ka8+–) 66...Kb8 67.Nd7 Ka7 68.Kb5 (68.Nf6!? Ka8+–) 68...Ka8 69.Nc5 Ka7 70.Kc6 (better 70.Ne6 Kb8+–) 70...Kb8?? (70...Ka8 71.Ne6 Ka7+–) 71.Kb6 Ka8 72.Ne6 Kb8 73.Nc7 Kc8 74.a7 (74.a7 Kd8 75.a8Q Ke7 76.Qf3 Kd6 77.Qf6 Kd7 78.Qe6 Kd8 79.Qe8) 1–0. ZeitNot2002 (1755) – Kwaichesscaine, Dos Hermanas Internet Section, 2003.

5.cd6 Qd6 6.Nf3 e4 7.Nd4 Nc6 8.Nb5 Qe7 9.N1a3.

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.c5).

5.Nf3 e4!? 6.Ng5 h6 –/+.

5.Nf3 Be6 6.Ng5 Bd7 7.e4? h6–/+ 8.Nf3 Be7 9.ef5= Bf5 10.cd6 cd6 11.Bb5 Nc6 12.Qb3 Qb6=+ 13.Nc3 0–0–0 14.Nd5?? Nd5?? 15.Qd5 a6?? 16.Bc6+= bc6 17.Rc1 Kb7?? 18.Qa5?? Qa5–/+ 19.ba5 Bf6 20.d4 e4 21.Nd2 Rhe8 22.0–0 e3 23.fe3=+ Bd3 24.Rfe1 d5 25.Rc3 Bg6 26.Rb3 Ka7 27.Rb6 Re6 28.Nb3= Be7 29.a4 Rb8 30.Bc3 Rb6–/+ 31.ab6 Kb6 32.Ba5 Kb7 33.g3 Bc2–/+ 34.Nc5 Bc5–+ 35.dc5 Ba4 36.Rf1 Rf6 37.h4 Rf1 38.Kf1 Bb5 39.Kf2 Kc8 40.Kf3 Kd7 41.Kf4 Ke6 42.g4 g6 43.Bd8 Bd3 44.g5 h5 45.Bb6 Be4 46.Ba5 Bc2 47.Bc3 Be4 ½–½. rabelloenter (2000) – pops (2150), net–chess.com, 2006.

4.d4 ed4

5.Nd2 c5 6.e3 (6.Qb3 Nc6 7.Ngf3 Nf6 8.g3 Be7 9.Bg2 0–0; 6.Ngf3 Nf6 7.g3 Nc6 8.Qb3 Be7 9.Bg2 0–0) 6...Qe7 7.Qh5 g6 8.Qe2 Nc6 9.ed4 Bg7.

5.Qd4. Adam.

5.Bd4 c5 6.bc5 dc5 7.Bc3 Qd1 8.Kd1 Nc6 9.Nd2 Nf6.

5.Bd4 Nf6 6.Nd2 (6.e3 Nc6=+ (6...c5 7.bc5 dc5 8.Bc3 Qd1 9.Kd1 Ne4 10.Nh3) 7.Nf3 Nb4 8.a3 Nc6 9.Bd3 Be7 10.Nc3; 6.b5 Nbd7 (6...Be7 7.Nf3 0–0 8.Nc3 c5 9.Bf6 Bf6 10.Qd5) 7.Nf3 Be7 8.Nc3 0–0 9.g3 Nc5 10.Bh3) 6...Be7 (6...Nc6 7.Bc3=+ (7.Ngf3 Nd4 8.Nd4 c5 9.Nb5 Be7 10.bc5) 7...d5 8.a3 dc4 9.Nc4 Ne4 10.Qd8) 7.e3 (7.Ngf3 0–0 8.b5 Nbd7 9.e3 Nc5 10.Be2) 7...0–0 (7...c5 8.Bc3= (8.bc5 dc5 9.Bc3 Nc6 10.Ngf3) 8...cb4 9.Bb4 Nc6 10.Bc3; 7...Nc6 8.Ngf3 Nb4 9.Bc3 a5 10.a3) 8.Ne2 (8.b5 c5 9.Bc3 d5 (9...f4 10.ef4) A) 10.cd5 Nd5= (10...Qd5?? 11.Bc4+–); B) 10.Ngf3=+) 8...Nc6 9.Bc3 (9.b5 Nd4 10.Nd4) 9...Qe8 (9...Ng4 10.h3–/+ (10.Nf3=); 9...Re8 10.Nf4) 10.Nf4 Ne5 (10...a5 11.b5 Ne5 12.Be2=) 11.Qb3 (11.Be2 Ng6=) 11...Qf7 (11...Ng6 12.Nd5 Nd5 13.cd5=) 12.Be2 (12.c5 Qb3 13.Nb3 Ne4 14.Be5 de5 15.Bc4 Kh8+=) 12...Ne4 Black is in command 13.Nf3? (better 13.Ne4 fe4 14.c5=) 13...Nc3–/+ 14.Qc3 Bf6 15.Qc1 g5 16.Ne5 (16.Nh3 Nf3 17.Bf3 Be6 (17...Ba1 18.Bd5 Be6 19.Ng5=) 18.Bb7 A) 18...Ba1 19.Ng5 (19.Ba8?! Bf6 20.Bd5 Bd5 21.cd5 Qd5=) 19...Qf6 20.Ne6+–; B) 18...Rab8–+) 16...Be5 (16...de5?! 17.Bh5 Qg7 18.Nd5=) 17.Nh3 (17.Nh5 Ba1 18.Qa1 f4–+) 17...Ba1 (17...f4 18.0–0 Bh3 19.gh3–+) 18.Qa1 h6 19.f4 (19.Qc3 Qg7 20.Qg7 Kg7–+) 19...g4 20.Nf2 Qg7 (20...Re8 21.Qd4–+) 21.Kd2 (21.Qg7 Kg7 22.Bd3 Bd7–+) 21...Bd7 (21...Qe7 22.Qd4–+) 22.Qg7 Kg7 23.g3 (23.Rd1 Rae8–+) 23...Rae8 (23...Bc6 24.Re1–+) 24.h3 h5 25.b5 (25.hg4 hg4 26.Rh5 Rh8 27.Rh8 Rh8–+) 25...Rh8 26.h4 (26.Bd3 Be6–+) 26...Re7 27.Bd3 Rhe8 (27...a6 28.ba6 ba6 29.Re1–+) 28.Re1 c6 (28...Kf8 29.e4–+) 29.a4 (29.e4 cb5 30.cb5 a6–+) 29...d5 30.c5 (30.cd5 cd5 31.Nd1 Be6–+) 30...Kf6 31.Re2 (31.b6 ab6 32.cb6 c5–+) 31...b6 (31...Rc8 32.Kc3 cb5 33.ab5 Rc5 34.Kd4–+) 32.cb6 ab6 33.Nd1 d4?? (better 33...c5–+) 34.ed4=+ Re2 35.Be2 Re4 (35...cb5 36.Bb5 Bb5 37.ab5–/+) 36.Kd3? (36.Kd3 cb5 37.Nc3 ba4 38.Ne4 fe4 39.Ke4–+; better 36.bc6!? Bc6 37.Kd3=+). Roczniak,Jan – Paradysz,J, Poland (year?).

5.e3 de3 6.Nf3 ef2 7.Kf2 Nf6 8.Bd3 Be7 9.Re1 Ne4 10.Be4 fe4–/+ 11.Re4 0–0 12.Qd5 Kh8 13.Nbd2 c6 14.Qh5 Rf5 (14...Rf5 15.Qh6 Bf6 16.Bf6 Rf6=+ (< 16...gf6 17.Rae1 Re5 18.Ne5 fe5 19.Kg1+–); 14...d5 15.Qh6 Qb6 16.Ke1=+). Roscher – Hoffmann, corr SOK–89–36, 1989.

5.Nf3 c5 6.Nbd2 Nf6 7.g3 Nc6 8.Bg2 Be7 9.0–0 0–0.

5.Nf3 Nf6 6.Nd4 c5 7.bc5 dc5 8.Nb5 a6 9.Qd8 Kd8.

5.Bd4 Nc6

6.Bb2 Nb4–/+ 7.e3 Nf6 8.Qa4 Nc6 9.Nf3 Bd7 10.Qb3 g6 11.Nc3 Bg7 12.Rd1 Na5 13.Qc2 f4 14.Bd3 fe3 15.fe3 Qe7 16.Nd5? Nd5–+ 17.Bg7 Ne3 18.Bg6 Kd8 19.Qc3 Nd5 (19...Nd5 20.Qe5 de5 (20...Qe5?! 21.Ne5 Rg8 22.Rd5 Rg7 23.Be4–/+) 21.Bh8 Ne3–+; 19...hg6 20.Bf6 Re8 21.Be7 Re7 22.Kf2 Nd1 23.Rd1+–) 0–1. Old Beal – bridlingtonbrummie, ChessWorld.net, 2009.

6.Bc3=+ Nf6 7.Nf3 Ne4 8.b5 Ne5 9.Ne5 de5.

6.Bc3 Nf6 7.Nf3 Be7 8.b5 (8.e3 Ne5 (8...a6 9.b5 ab5 10.cb5 Na5 11.Nbd2 0–0 12.Bd3 d5; 8...0–0 9.b5 Nb8 10.Bd3 Qe8 11.0–0 Qg6 12.Bd4 Be6; 8...Qd7 9.Nbd2 Qe6 10.Be2 0–0 11.Ng5 Qd7 12.0–0 Qe8) 9.Ne5 (9.Nbd2 Nfd7 10.Nd4 Nf6 11.Be2 c5 12.bc5 dc5) 9...de5 10.Qd8 Kd8 11.Nd2 e4 12.Rd1 Bd7) 8...Nb8 9.g3 (9.e3 Nbd7= 10.Be2 Ne4 11.0–0 Bf6 12.Bd4 0–0) 9...0–0 (9...Nbd7 10.Bg2 0–0 11.0–0 Nc5 12.Bd4 Nfe4) 10.Bg2 Ne4 (10...d5 11.Qd3= (11.Nd4 Kh8 12.Qb3 dc4) 11...Nbd7 12.Ne5 Nb6; 10...Nbd7 11.0–0 Ne4 12.Bd4 Bf6) 11.0–0 (11.Qd5 Kh8= 12.Nd4 Nc3) 11...Nc3 (11...Be6 12.Qd3 Nc5 13.Qc2=) 12.Nc3 Nd7 13.Nd5 (13.Nd4 Nc5+=) 13...Nc5+= 14.a4 (14.Nd4 Bf6=) 14...Bf6= 15.Ra3 a6 16.Nd4 (16.a5 ab5 17.cb5 Bb2=) 16...ab5 (16...Be5 17.a5=) 17.cb5 Bd7 18.Nf6 Qf6 19.a5 Ra7 20.e3 Ne4 (20...Qe5 21.Qe2+=) 21.Qc2 Rc8 (21...Nc5 22.Rb1+=) 22.Be4 fe4 23.Qe4 c5? (23...c5 24.b6 cd4 25.ba7 Bc6+–; better 23...c6 24.bc6 bc6 25.Rb1+–) 24.b6+– cd4 25.ba7 Bc6 26.Qd4?? (better 26.Qg4 Ra8 27.ed4+– (27.Qd4? Qf3 28.Qc4 Kh8–+)) 26...Qf3=+ 27.Qc4 Kh8 28.e4 Qa3 29.Qe6? (29.a6 h5 30.Rb1 Qa6 31.Qa6 ba6 32.Rc1+=) 29...Ra8–+ 30.Rd1 The isolani on d6 becomes a target (30.Qf5 Qb4–+) 30...Qa5 31.Qd6 Rg8 (31...Qa7 32.Qd8 Be8 33.Qe7–+) 32.Qb8 (better 32.Qd4!? b6 33.Ra1–/+) 32...Be4–+ 33.h4 b5 34.Qe5 Ba8 35.Ra1 Qb6 36.h5 (36.Qe3 Qc6 37.f3–+) 36...Qc6 37.Kf1 Re8 (37...Re8 38.Qe8 Qe8–+) 0–1. Martinez,Ezequiel – Menendez Solar,Jose C, Spain Primera B ONCE–Puen, 1998.

6.Nc3 Nf6 7.Bf6 gf6 8.e3 Bg7 9.Qh5 Kf8.

4.d4 e4

5.Nc3 Be7 6.Nh3 (6.b5 Nf6 7.Nh3 a6 8.Nf4 0–0 9.Qb3 c6) 6...Nf6 7.Nf4 0–0 8.b5 a6 9.Qb3 c6.

5.Nc3 Nf6 6.Nh3 Be7 7.Nf4 0–0 8.b5 a6 9.Qb3 c6.

5.Nc3 Qg5 6.Nh3+= Qh5 7.Nf4 Qg5 8.Nfd5 Qd8 9.Nb5 Na6= 10.Nbc3 c6 11.Nf4 Nb4=+ 12.e3 Be7 13.Qh5 Kf8=+ 14.Ng6 hg6 15.Qh8 Nc2 16.Kd2 Na1 17.d5 Bf6 18.Be2 cd5 19.Ra1 Qa5 20.cd5–/+ b6 (20...b6 21.Rc1 Bb7–+) 0–1. jperr75108 – euforia (1635), internet, 2007.

5.d5= a5 6.ba5 Nf6 7.Nh3 Nbd7 8.Nf4 Nc5 9.Nd2 Be7.

5.d5= Nd7 6.e3 (6.Nh3 Ngf6 7.Nf4 Ne5 8.Nd2 Qe7 9.e3 Bd7; 6.Nd2 Ne5 7.Qb3 a5 8.Nh3 ab4 9.Nf4 Nf6) 6...Ngf6 (6...a5 7.Nh3 Ngf6 8.Nf4 Ne5 9.ba5 e7) 7.h3 (7.Ne2 Be7= (7...a5 8.Nd4 Ne5 9.b5 Nfg4) 8.Nd4 Ne5 9.Nc3 0–0; 7.Nh3 Ne5 8.Nc3 Be7 9.Ng5 0–0) 7...Ne5 (7...a5 8.a3 Ne5 9.Be2 Bd7) 8.Be2 (8.f4 Ng6 9.Nc3 a5) 8...Be7 (8...a5 9.a3 Bd7) 9.Nd2 (9.f4 Ng6=+) 9...0–0 10.f4 (10.Nb3 c6=+) 10...Nd3 11.Bd3 ed3 12.Ngf3 Ne4 (12...a5 13.b5=) 13.0–0 Ng3 14.Re1 Ne2 (14...a5 15.ba5 Ne4 16.Qb1+=) 15.Kh2 Bf6 16.Qb3 (16.Bf6 Qf6 (worse 16...Rf6 17.Qb3 Rg6 18.Qd3+–) 17.Qb3 Qc3+=) 16...Bb2 17.Qb2 Qf6 (17...Qe8 18.Nf1 b5 19.Qb3 bc4 20.Qc4=) 18.Nd4 (better 18.Qf6!? Rf6 19.a4+–) 18...Re8= 19.Nf1 (19.N2b3 Re3 20.Qd2 Re4 21.Ne2 de2 22.Re2 Bd7=) 19...Bd7 (19...a5 20.b5=+) 20.Rab1 (20.Red1!?=) 20...Nd4=+ 21.Qd4 Qd4 22.ed4 Re4 23.Re4 fe4 24.Re1 Re8 25.b5 (25.Re3 h5=) 25...c6 26.dc6 bc6 27.bc6 Bc6 28.d5 Bd7 29.g4 (29.Re3 h5=) e3=+ (29...e3 30.Re3 Re3 31.Ne3 d2=+). Roczniak,Jan – Moscicki,Z, Poland (year?).

5.e3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.d4 e4).

5.Nh3 A) 5...Be7 6.Nf4 (6.b5 Nf6 7.Nc3 a6 8.Nf4 0–0 9.Qb3 c6) 6...Nf6 7.Nc3 0–0 8.b5 a6 9.Qb3 c6; B) 5...Nf6 6.Nc3 Be7 7.b5 0–0 8.Nf4 c6 9.e3 g5.

5.d5 Nf6

6.Qc2 a5 7.e3 ab4 8.Be2 Nbd7 9.h4 c5 10.h5 Be7 11.h6 g6 12.Nh3 0–0 13.Ng5 Nb6 14.g4 Qe8 15.Nd2 Na4 16.gf5 Bf5 17.Ne6 Be6 18.de6 b6 19.Ne4 Ne4 20.Bg7 Nf6 21.Rg1 Nc3 22.Bf3 Rd8 23.Bf8 Bf8 24.Bd5 Bh6 25.e7 Ncd5 26.ed8Q Qd8 27.cd5 Bg7 28.0–0–0 b5 29.Rg6 hg6 30.Qg6 Qe8 31.Qg5 Qe5 32.Qe5 de5 33.d6 Nd7 34.Rd5 Kf7 35.f4 ef4 36.ef4 Ke6 37.Rg5 Bf6 38.Rg6 c4 39.Kc2 Nc5 40.Rg8 Kd6 41.Rf8 Be7 42.Rf5 b3 43.ab3 Nb3 44.Rb5 Nd4 45.Kc3 Nb5 46.Kc4 Nc7 47.Kd3 Kd5 48.Ke3 Bf6 49.f5 Ke5 50.Kd3 Nd5 51.Kc4 Ne3 52.Kc5 Nf5 53.Kc4 Kd6 54.Kd3 Kd5 55.Ke2 Ke4 56.Kd2 Nd4 57.Kc3 Be7 58.Kc4 Ke5 59.Kc3 Kd5 60.Kd3 Bg5 61.Kc3 Kc5 62.Kd3 Kd5 63.Kc3 Nc6 64.Kd3 Na5 65.Kc3 Nc4 66.Kd3 Bh6 67.Kc3 Kc5 68.Kd3 Nd6 69.Kc3 Nb5 70.Kd3 Kd5 71.Kc2 Kc4 72.Kd1 Kd3 73.Ke1 Be3 74.Kf1 Ke4 75.Ke2 Nd4 76.Kd1 Bf2 77.Kd2 Bh4 78.Kc3 Kd5 79.Kd3 Bg3 80.Ke3 Be5 81.Kd3 Ne6 82.Ke3 Ng5 83.Kd3 Bf4 84.Kc3 Kc5 85.Kd3 Kd5 86.Ke2 Ke4 87.Kf2 Ne6 88.Ke2 Bg3 89.Kd2 Bf2 90.Kc3 Nf4 91.Kc4 Be3 92.Kb5 Kd5 93.Kb4 Bd4 94.Kb3 Kc5 95.Kc2 Kc4 96.Kd2 ½–½. waldi1962 – nexx1 (1710), internet, 2014.

6.e3 Be7 7.Nc3 0–0 8.Be2 c6 9.f3 Nbd7 10.Nh3 Ne5 11.Nf4 Qb6–/+ 12.a3? Qe3 13.fe4? Ne4 14.Ne4 fe4 15.Be5 de5 16.Nh3 Bh3 17.gh3 Bh4 0–1. wlittle (2175) – hobgoblin (2070), net–chess.com, 2005.

4.e3 Nc6

5.b5 Na5 6.Bc3 b6 7.Ba5 ba5 8.a4 Bb7 9.Nf3 Ne7 10.Be2 g6 11.d3 Bg7 12.Nc3 e4 (12...Bf3!? 13.gf3 a6+=) 13.Nd4+= 0–0 14.Rc1 ed3 15.Qd3 Bg2 16.Rg1 Bb7 (16...Bd4!? 17.Qd4 c5 18.bc6 Bc6+=) 17.Ne6+/– Qd7 18.Nf8 Rf8 19.Nd5 Be5 20.h3 Bd5 (20...a6!?+/–) 21.cd5+– Bb2 22.Rc2 Be5 23.Qc4 Rc8 24.h4 h5? (24...Kf8+–) 25.Bh5 Bh2 (25...Kf7 26.Bf3+–) 26.Rg2 Be5 27.Bg6 Ng6 28.Rg6 Kf7 29.Re6 Rh8 (29...Kf8+–) 30.Qc7 Qc7 (30...Rd8 31.f4 Ba1 32.Rd6 Qc7 33.Rc7 Ke8 34.Rd8 Kd8 35.Ra7+–) 31.Rc7 Kf8 32.Ra7 (32.Re5 de5 33.Rc8 Ke7 34.Rh8 f4 35.ef4 ef4+–) 32...Rh4 33.Ke2 (33.b6 Ra4 34.Ree7 Bc3 35.Kf1 Bf6 36.Rf7 Kg8 37.Rfb7 Ra1 38.Kg2 Rg1 39.Kg1 Bg7 40.Rg7 Kf8 41.Rgc7 a4 42.Rc8) 33...Ra4 34.Ra8 Kf7 35.Ree8 (better is 35.b6 Ra2 36.Kf3 Rb2 37.Ra7 Kf8+–) 35...Ra2 36.Kf3 Rb2 37.Rf8 Kg7 38.Rg8 Kh7 39.Rgb8 Rd2 (39...Bc3 40.b6 Be1 41.b7 Rf2 42.Kg3 Rf1 43.Kg2 Rf2 44.Kg1+–) 40.Ra5 (40.Ra7!? Kh6 41.b6 Bf6+–) 40...Rd5 41.Ra7 (41.Ra7 Kg6 42.b6+–) 1–0. ourang – vasilea, internet, 2013.

5.b5 Nce7

6.d4 e4 7.d5 Nf6 8.Nh3 Ng6 9.Be2 Be7 10.Nf4 Nf4 11.ef4 0–0 12.0–0 c6 13.a4 a6 14.dc6 bc6 15.bc6 Qb6 16.Bf6 Bf6 17.Qd5 White intends a5 17...Kh8 18.Ra2 (worse is 18.Qd6 Rd8 19.Qa3 Ba1 20.Qa1 Qc6–/+) 18...Rd8?? (18...Re8 19.a5 Qc7 20.Rd1=) 19.a5 (better is 19.c7 Rg8 20.Qa8+–) 19...Qb3? (19...Qc7 20.Na3+=) 20.Rd2 (better is 20.Ra3 Qc2 21.c7+–) 20...Ra7+/– 21.Bd1?? (better is 21.c5 Qd5 22.Rd5 dc5 23.Nc3+=) 21...Qb1–+ 22.c5 h6?? (22...Qb4 23.cd6 Rc7 24.dc7 Rd5 25.Rd5 Qf8+/–) 23.cd6?? (better is 23.Bb3 Qf1 24.Kf1+–) 23...Qb4+= 24.d7? (better is 24.Be2!?+=) 24...Bd7–+ 25.cd7 Rad7 26.Qd7 Rd7 27.Rd7 Qa5 28.Bh5 Kh7 29.Rfd1 Qb6 30.g4 fg4 31.Bg4 h5 32.Bh5 a5 33.Bg4 a4 34.Bf5 Kh6 35.Be4 a3 36.Bb1 a2?? 37.Ba2+– Qb2 38.Bb1 Qb4 39.R7d3 Qf4 40.Rh3 Kg5?? 41.Rg3 Kh4 42.Rdd3?? Qc1–+ 43.Kg2 Qb1 44.Rh3 Kg5 45.Rdf3 Kg6 46.Rhg3 Kf7 47.h4 Qe4 48.h5 Kg8 49.h6 g5 50.Kh3 Be7 51.Re3 Qf5 52.Kg2 Bd6 53.Ref3? Qd5 54.Rg4 Bf4 55.Rgg3 Bg3 56.Kg3 Kh7 57.Kg4 Kh6 58.Rh3 Kg6 59.Rf3 Qe4 60.Kg3 Qh4 61.Kg2 g4 62.Rg3 Kf5 63.Kf1 Kf4 64.Kg2 Qh8 65.Kg1 Qa8 66.Kh2 Qa2 67.Kg2 Qe2 68.Kg1 Qe4 69.Re3 Qb1 70.Kg2 Qd1 71.Rg3 Qd5 72.Kg1 Qe4 73.Re3 Qe3 74.fe3 Ke3 75.Kg2 Ke4 76.Kg3 Kf5 77.Kg2 Ke4 78.Kg3 Kf5 79.Kg2 Kf4 80.Kf2 Ke4 81.Kg3 ½–½. typ48 – roninlk (1615), internet, 2013.

6.Nf3 Nf6

7.Nc3 a6 8.ba6 A) 8...Ra6 9.c5 Ra5 10.cd6 cd6 11.Qb3 Bd7 12.Rc1 Ned5 13.Bc4 Bc6 14.d4; B) 8...Nc6 9.ab7 (9.c5 ba6 10.cd6 cd6 11.Rb1 Rb8 12.Be2 Qa5 13.0–0 Be7 14.Bc4; 9.Be2 ba6 10.h3 Be7 11.0–0 0–0 12.Rb1 Rb8 13.Ba3 Rb1 14.Qb1) 9...Bb7 10.c5 Qd7 11.cd6 Bd6 12.Nb5 e4 13.Nd6 cd6 14.Nd4; C) 8...ba6 9.d3= (9.Rb1 e4 10.Nd4 c5 11.Nb3 Be6 12.Be2 Nc6 13.0–0 Be7 14.Nd5; 9.Be2 e4 10.Nd4 Rb8 11.Rb1 c5 12.Nb3 Nc6 13.0–0 Be7 14.d4) 9...Nc6 10.Rb1 Be7 11.Be2 0–0 12.0–0 Rb8 13.Nd5 Bb7 14.Qa4.

7.Nc3 a6 8.Qb3 Ne4 9.Be2 Nc5 10.Qb4 Ng6 11.0–0 ab5 12.cb5 d5 13.d4 Nd3 14.Qb3.

7.Nc3 c6 A) 8.Qc2 e4 (8...a6 9.ba6 Ra6 10.Be2 e4 11.Nd4 Kf7 12.0–0 c5 13.Ndb5 d5 14.d4) 9.Nd4 (9.Ng5 h6 10.Nh3 Ng6 11.d3 cb5 12.Nb5 a6 13.Nc3 Qa5 14.Qd2) 9...c5 10.Nb3 Ng6 11.d3 ed3 12.Bd3 Ne5 13.0–0 Be7 14.Be2; B) 8.Qa4 e4 9.Nd4 (9.Ng5 Bd7 10.Be2 h6 11.Nh3 Ng6 12.f3 Be7 13.0–0 ef3 14.Rf3) 9...c5 10.Nde2 Bd7 11.Nf4 g5 12.Nh3 Rg8 13.Be2 Kf7 14.Qc2; C) 8.Be2 C1) 8...e4 9.Ng5 (9.Nd4 c5 10.Nb3 Ng6 11.0–0 Be7 12.d3 ed3 13.Qd3 Ne5 14.Qc2) 9...h6 10.Nh3 Ng6 11.0–0 Be6 12.Qc2 Be7 13.d3 ed3 14.Bd3; C2) 8...g6 9.c5 (9.Qb3 Bh6 10.c5 e4 11.cd6 Qd6 12.bc6 bc6 13.Ba3 Qb8 14.Nd4) 9...Bg7 10.Qb3 Ned5 11.Qa4 0–0 12.bc6 dc5 13.Ne5 Re8 14.Nd5; C3) 8...Kf7 9.0–0 (9.Qa4 h6 10.0–0 c5 11.Nh4 g5 12.Nf3 e4 13.Ne1 g4 14.Rd1; 9.d4 e4 10.Ng5 Kg8 11.0–0 h6 12.Nh3 Ng6 13.bc6 bc6 14.Rb1; 9.c5 e4 10.Qb3 Kg6 11.cd6 ef3 12.de7 Qe7 13.Bf3 Be6 14.Qc2; 9.Qc2 h6 10.0–0 Be6 11.d4 e4 12.Nd2 cb5 13.Nb5 a6 14.Nc3; 9.bc6 Nc6 10.0–0 Be7 11.Nd5 Nd5 12.cd5 Na5 13.Qa4 Bd7 14.Qa3; 9.Qb3 h6 10.0–0 c5 11.d3 Be6 12.h3 Ng6 13.Nd5 Be7 14.a4; 9.Rb1 h6 10.0–0 c5 11.d3 Be6 12.Qb3 g6 13.Nd2 Bg7 14.Bf3) 9...h6 10.Qc2 Be6 11.h3 cb5 12.Nb5 a6 13.Nc3 Rc8 14.Rac1; C4) 8...h6 9.0–0 (9.Qa4 Kf7 10.0–0 c5 11.Nh4 g5 12.Nf3 e4 13.Ne1 g4 14.Rd1; 9.Qc2 Kf7 10.0–0 Be6 11.a4 c5 12.d4 cd4 13.ed4 Ng6 14.Rfd1; 9.Qb3 Kf7 10.0–0 c5 11.Ne1 Ng6 12.f4 e4 13.d3 Bd7 14.de4; 9.d4 e4 10.Nd2 Kf7 11.0–0 Be6 12.f3 ef3 13.Bf3 Rc8 14.bc6; 9.h3 e4 10.Nd4 c5 11.Nb3 Kf7 12.0–0 Ng6 13.f3 ef3 14.Bf3; 9.Rb1 Kf7 10.0–0 c5 11.d3 Ng6 12.Nd5 Nd5 13.cd5 Be7 14.Bc3; 9.Rc1 e4 10.Nd4 c5 11.Nb3 Be6 12.0–0 Kf7 13.d3 ed3 14.Qd3; 9.a4 Kf7 10.0–0 Be6 11.Qc2 c5 12.e4 f4 13.Nd5 Ned5 14.ed5; 9.bc6 Nc6 10.Nh4 Kf7 11.0–0 g6 12.f4 Kg7 13.Nd5 Be6 14.Qe1; 9.a3 Be6 10.0–0 Kf7 11.Qb3 c5 12.d3 Ng6 13.Nd5 Bd7 14.Nf6; 9.h4 e4 10.Nd4 c5 11.Nb3 Ng6 12.Nd5 Nd5 13.cd5 Kf7 14.h5) 9...Kf7 10.c5 e4 11.cd6 Qd6 12.Nd4 c5 13.Ba3 Ned5 14.Qb3; C5) 8...a6 9.ba6 (9.a4 e4 10.Nd4 c5 11.Nb3 Ng6 12.0–0 Be7 13.d3 ed3 14.Qd3) 9...Ra6 10.0–0 Ng6 11.c5 Ra5 12.cd6 Bd6 13.Qb3 Qe7 14.d4.

7.Nc3 Bd7 8.Be2 Ng6 9.0–0 (9.h4 e4 10.Nd4 Be7 11.h5 Ne5 12.h6 gh6 13.Rh6 Nfg4 14.Rh5; 9.Qb3 Ne4 10.0–0 Be7 11.d4 Nc3 12.Bc3 e4 13.Nd2 0–0 14.c5; 9.Qc2 Be7 10.0–0 0–0 11.Rae1 Kh8 12.a4 c5 13.bc6 bc6 14.Rb1; 9.Qa4 Be7 10.0–0 Ne4 11.Nd5 0–0 12.d3 Nf6 13.Ne7 Qe7 14.Qb3) 9...Be7 10.c5 0–0 11.cd6 cd6 12.Qb3 Kh8 13.Rac1 Rc8 14.Nd5.

7.Nc3 g6 8.Qb3 Bg7 (8...c5 9.bc6 Nc6 10.Be2 Bg7 11.0–0 Ne4 12.Qc2 Nc3 13.Bc3 0–0 14.Rab1; 8...Bh6 9.c5 Kf8 10.Be2 e4 11.cd6 Qd6 12.Nd4 Kg7 13.Ba3 Qd8 14.0–0; 8...Be6 9.d4 e4 10.d5 Bd5 11.Ng5 Bf7 12.Nce4 Ne4 13.Ne4 fe4 14.Bh8) 9.Be2 (9.c5 Ne4 10.cd6 cd6 11.Bc4 Nc5 12.Qb4 Be6 13.Ng5 Bc4 14.Qc4; 9.h3 Be6 10.Ng5 Bg8 11.Rc1 h6 12.Nf3 Be6 13.d4 0–0 14.de5) 9...Be6 10.d4 e4 11.Ng5 Qd7 12.0–0 0–0 13.a4 Rad8 14.Ba3.

7.Nc3 g6 8.c5 A) 8...Bg7 9.Qb3 (9.cd6 Qd6 10.Bc4 Qb4 11.Bb3 Qd6 12.0–0 Nfd5 13.Qc1 Be6 14.Ba3; 9.Bc4 d5 10.Bb3 e4 11.Nd4 0–0 12.0–0 Bd7 13.Qe2 c6 14.f4; 9.Qa4 0–0 10.Qb3 Kh8 11.Be2 dc5 12.Ne5 Ned5 13.Nd5 Be6 14.0–0) 9...Ne4 10.Na4 c6 11.Rc1 Bf6 12.bc6 bc6 13.cd6 Qd6 14.Ba3; B) 8...Bh6 9.Qb3 (9.Bc4 d5 10.Bb3 e4 11.Ne5 a6 12.a4 0–0 13.0–0 Be6 14.f4; 9.Qa4 0–0 10.Bc4 d5 11.Bb3 e4 12.Ne5 Be6 13.Ne2 a6 14.0–0; 9.cd6 cd6 10.Qb3 Bd7 11.Ba3 Ne4 12.Bc4 Kf8 13.0–0 Rc8 14.Rfc1) 9...Kf8 10.Be2 Kg7 11.cd6 cd6 12.0–0 f4 13.h4 Bg4 14.d4; C) 8...Ne4 9.Ne4 (9.cd6 cd6 10.Bc4 Bg7 11.0–0 d5 12.Bb3 0–0 13.Na4 Bd7 14.d3) 9...fe4 10.Ng5 Bg7 11.cd6 cd6 12.Ne4 d5 13.Nc5 Qd6 14.Rc1; D) 8...Be6 9.cd6 (9.Qa4 Ned5 10.Bc4 Nc3 11.Bc3 Bc4 12.Qc4 d5 13.Qb3 Bc5 14.Be5; 9.d4 Bg7 10.de5 de5 11.Ne5 0–0 12.Be2 Ng4 13.Ng4 fg4 14.0–0; 9.Ng5 Bg8 10.d4 Ned5 11.de5 de5 12.Rc1 Qe7 13.Nd5 Bd5 14.Qa4) 9...cd6 10.Ng5 Bd5 11.Rc1 Bh6 12.Nd5 Ned5 13.h4 Qa5 14.Qb3.

7.Nc3 g6 8.d4 e4 9.Ng5 (9.Nd2 Bh6 10.Be2 0–0 11.h4 Be6 12.0–0 a6 13.a4 Qd7 14.Qb3) 9...h6 (9...Bh6 10.h4 0–0 11.Be2 Bg7 12.0–0 Bd7 13.Qb3 h6 14.Nh3) 10.Nh3 g5 (10...a6 11.Nf4 ab5 12.cb5 Bg7 13.h4 g5 14.Nh5) 11.d5 (11.a4 Ng6= (11...Bg7 12.Qc2 Be6 13.Be2 0–0 14.0–0) 12.Nd5 Bg7 13.Be2 0–0 14.0–0; 11.Qc2 Bg7 12.Be2 0–0 13.0–0 Be6 14.Qb3) 11...Bg7 (11...Ng6 12.Qd2=+ (12.Be2 Bg7 13.Bh5 Kf7 14.0–0) 12...Ne5 13.Be2 Bg7 14.0–0) 12.Be2 (12.Ng1 Ng6=+ (12...a6 13.Nge2 0–0 14.h4) 13.Nge2 0–0 14.Nd4; 12.Qc2 0–0 13.Be2 Ng4 14.0–0) 12...0–0=+ 13.Qd2 (13.Qc2 Ng4 14.0–0) 13...Ng6 (13...Bd7 14.Rb1) 14.0–0–0 (14.0–0 Ne5=+) 14...Ne5 (14...Qe7 15.Rhe1–/+) 15.f3 ef3 (15...Nfd7 16.f4 (worse 16.fe4 Nb6–/+) 16...Nf7 17.Rdf1=+) 16.gf3= a6 (16...Qe7 '=' 17.Rde1=+) 17.Nf2 (17.f4 Nf7=) 17...ab5 18.cb5 Qe8 (18...Qe7 19.Rhg1=+) 19.h4 (19.Rdg1!?= is an interesting idea) 19...g4–/+ 20.fg4 (20.f4 Ned7–/+) 20...Nfg4 (20...fg4 21.Rdg1 h5 22.Ba1–+) 21.Ng4 (21.Rdf1 Kh8=+) 21...Ng4 (21...fg4 22.e4–/+) 22.Bg4? (better 22.Rh3!?= is a viable option) 22...fg4–/+ 23.e4 Rf3 24.Rdf1 (better 24.Rhf1 Qf7 25.Rf3 Qf3 26.Qd3–/+) 24...Bc3 (better 24...Qf7! Black clearly has the better chances 25.Rf3 Qf3–+ (25...gf3?! 26.a3–/+)) 25.Bc3= Qe4 26.Re1 Qc4 27.Re3?? (better 27.Re8 was possible 27...Kf7 28.Rf8 Ke7 29.Re1 Be6 30.Re6 Kd7 31.Ra8 Qc3 32.Qc3 Rc3 33.Kd2+–) 27...Ra2–+ 28.Qe1 (28.Re8 Kf7 29.Rf8 Kf8 30.Qh6 Ke8 31.Qg6 Rf7 32.Re1 Re2 33.Qc2 Re1 34.Be1 Qd5 35.Qc3 Qb5 36.Qh8 Kd7 37.Qd4 Qc5 38.Qc5 dc5 39.h5–+) 28...Ra1 29.Kd2N Qa2 30.Kd3 Bf5 31.Kd4 Qa4 32.Bb4 Rd1 33.Rd3 Rfd3 34.Kc4 Qb3 0–1. Radu,Mihaela Z – Hodorogea,Irina (1620), Centrocoop op, 1997.

7.Nc3 Ng6 A) 8.Be2 A1) 8...Bd7 9.Qb3 (9.h4 e4 10.Nd4 Be7 11.h5 Ne5 12.h6 gh6 13.Rh6 Nfg4 14.Rh5) 9...Ne4 10.d4 ed4 11.Nd4 Nc5 12.Qc2 Be7 13.Nf5 0–0 14.Nd4; A2) 8...Be7 9.Qb3 (9.0–0 0–0 10.h3 Ne4 11.Qc2 Nc3 12.Bc3 Be6 13.a4 Qd7 14.d4; 9.h4 e4 10.Nd4 Ne5 11.0–0 0–0 12.h5 Nfg4 13.Bg4 Ng4 14.f3; 9.h3 0–0 10.0–0 Ne4 11.Qb3 Be6 12.Qc2 Nc3 13.Bc3 Bf6 14.Rab1; 9.Qc2 0–0 10.0–0 Bd7 11.Rae1 h6 12.d4 e4 13.Nd2 Qe8 14.f3; 9.a4 0–0 10.0–0 c5 11.d3 d5 12.Qb3 d4 13.Nd5 Be6 14.Ne7; 9.Qa4 0–0 10.0–0 Ne4 11.Nd5 Be6 12.d3 Nc5 13.Qc2 Qd7 14.d4; 9.Nd5 0–0 10.Qb3 Nd5 11.cd5 f4 12.e4 Nh4 13.Nh4 Bh4 14.0–0; 9.g3 0–0 10.0–0 e4 11.Nd4 Ne5 12.f3 ef3 13.Bf3 a6 14.Bg2) 9...0–0 10.0–0 Ne4 11.c5 Kh8 12.c6 bc6 13.bc6 Nc5 14.Qc2; B) 8.Qc2 Be7 (8...e4 9.Nd4 Be7 10.d3 0–0 11.de4 f4 12.ef4 Nf4 13.g3 Ne6 14.Nf5) 9.h4 (9.Be2 0–0 10.0–0 Bd7 11.Rae1 Kh8 12.Qb3 a6 13.a4 c5 14.d3; 9.h3 0–0 10.Be2 Bd7 11.0–0 e4 12.Nd4 c5 13.bc6 bc6 14.Rab1) 9...h5 10.Be2 0–0 11.Qb3 c6 12.0–0 Ng4 13.g3 Be6 14.a4; C) 8.h3 C1) 8...Be7 9.Be2 (9.Qb3 0–0 10.Be2 Ne4 11.0–0 Be6 12.d4 a6 13.de5 Nc5 14.Qc2; 9.Qc2 0–0 10.Be2 Bd7 11.0–0 e4 12.Nd4 c5 13.bc6 bc6 14.d3; 9.h4 e4 10.h5 Ne5 11.Nd4 0–0 12.h6 gh6 13.Be2 Qe8 14.Qb3) 9...0–0 10.0–0 Ne4 11.Qc2 Nc3 12.Bc3 Be6 13.a4 Qd7 14.d4; C2) 8...Bd7 9.Be2 (9.Qb3 e4 10.Nd4 Be7 11.Be2 0–0 12.0–0 c5 13.bc6 bc6 14.c5; 9.a4 Be7 10.Be2 0–0 11.0–0 c5 12.d3 Qa5 13.Nd2 Qc7 14.Bf3) 9...Be7 10.0–0 0–0 11.c5 dc5 12.Ng5 Kh8 13.Bc4 e4 14.Nf7; C3) 8...e4 9.Nd4 Be7 10.Be2 0–0 11.0–0 Ne5 12.Nd5 a6 13.Nf4 Rf7 14.Qb3; D) 8.Nd5 D1) 8...Be7 9.Ne7 (9.h4 Nd5 10.cd5 0–0 11.h5 Nh4 12.h6 gh6 13.g3 Nf3 14.Qf3; 9.Be2 0–0 10.Qb3 f4 11.0–0 Nd5 12.cd5 Bf5 13.Rac1 a6 14.Ne5; 9.Qb3 0–0 10.Be2 c5 11.bc6 bc6 12.Ne7 Qe7 13.0–0 Bd7 14.Rab1) 9...Qe7 10.h4 h5 11.Be2 Ng4 12.Qb3 Bd7 13.g3 e4 14.Ng5; D2) 8...Nd5 9.cd5 Be7 10.Qc2 Bf6 11.Rc1 Ne7 12.Bc4 Bd7 13.0–0 0–0 14.h3; D3) 8...Bd7 9.h4 a6 10.Nf6 Qf6 11.Qb3 ab5 12.cb5 Be6 13.Qc2 Bd5 14.Qc7; D4) 8...Be6 9.Qb3 (9.Ng5 Bg8 10.Nf6 Qf6 11.Nf3 Be7 12.Be2 Bf7 13.h4 h5 14.Ng5; 9.Nf6 Qf6 10.h4 0–0–0 11.c5 Bd5 12.Rc1 dc5 13.h5 Ne7 14.Ne5; 9.Bd3 Bd5 10.cd5 e4 11.Bc4 ef3 12.Qf3 Qd7 13.Bf6 gf6 14.Bd3) 9...Ne4 10.Be2 c6 11.bc6 bc6 12.Nb4 Qb6 13.d4 Qa5 14.Qa3; E) 8.h4 E1) 8...h5 9.Rc1 (9.Qb3 Be7 10.Be2 Ne4 11.g3 Be6 12.0–0 0–0 13.Qc2 Nc3 14.Bc3; 9.Be2 Be7 10.Rc1 e4 11.Ng5 Ng4 12.Nd5 Nh4 13.Bg7 Ng2 14.Kf1 Rg8; 9.Nd5 Be7 10.Be2 Bd7 11.Rc1 0–0 12.Ng5 Nd5 13.cd5 Bg5 14.hg5; 9.g3 e4 10.Ng5 Ne5 11.Nd5 Be7 12.Rc1 Nfg4 13.d4 ed3 14.Be5; 9.Ng5 Be7 10.g3 e4 11.d3 ed3 12.Bd3 Ne5 13.Be2 Nfg4 14.Nd5; 9.Rb1 Be7 10.Be2 Ng4 11.Nd5 0–0 12.Qb3 Be6 13.g3 Qd7 14.Ng5; 9.d4 Be7 10.de5 Ne5 11.Be2 0–0 12.Nd5 Neg4 13.Ng5 c6 14.Ne7; 9.a4 Be7 10.Be2 0–0 11.c5 Ng4 12.Bc4 Kh8 13.Nd5 Bd7 14.Ng5; 9.Qa4 Be7 10.Ng5 0–0 11.Qb3 c5 12.bc6 bc6 13.Ba3 c5 14.Rb1; 9.a3 Be7 10.Be2 0–0 11.c5 Ng4 12.Qb3 Kh8 13.cd6 Bd6 14.Ng5; 9.Qc2 Be7 10.Be2 0–0 11.Qb3 Ng4 12.c5 Kh8 13.cd6 Bd6 14.Ng5; 9.c5 Be7 10.cd6 Qd6 11.Bc4 e4 12.Ng5 Ne5 13.Qb3 Qb4 14.Bf7) 9...Be7 10.Be2 Ng4 11.Nd5 0–0 12.Qb3 c6 13.bc6 bc6 14.c5; E2) 8...e4 9.Nd4 Ne5 10.h5 Bd7 11.Be2 Qe7 12.Qa4 Qf7 13.0–0 Be7 14.Rac1.

4.e3 Be6

5.a3 g5 6.Nf3 Nf6 (6...g4 7.Ng1=) 7.h3 (7.d4 Qe7+/–) 7...h5? (7...Rg8 8.d4 g4 9.hg4 fg4 10.Nfd2=) 8.Be2 (better is 8.Ng5!? Bd7 9.Be2+/–) 8...g4= 9.hg4 fg4 10.Nh4 Ne4 (10...Rg8 11.d4 ed4 12.Qd4=) 11.Nc3 Nc3 12.Bc3 Qg5 13.g3 (13.d4 ed4 14.Qd4 Rh6+=) 13...Nd7 14.d4 e4?? (better is 14...ed4 15.Qd4 Ne5=) 15.d5+– Bg7 16.Bg7 Qg7 17.de6 Ne5 18.Qd4 0–0–0 (18...Qf6 19.0–0+–) 19.Qa7 Nf3 20.Nf3 (better is 20.Kf1!? Qa1 21.Kg2 Nh4 22.gh4 Qh1 23.Kh1 c5 24.bc5 dc5+–) 20...Qa1 21.Bd1 c6 22.0–0 (22.Qa8 Kc7 23.Qa5 Kb8 24.b5 cb5 25.Nd4+–) 22...ef3 23.Ba4 (23.b5 Qe5 24.Ba4+–) 23...Qa3 24.c5?? (better is 24.b5 d5 25.bc6+–) 24...Qb4–+ 25.cd6 Qd6 26.Qa8? (26.Rc1 Qb8 27.Qa5 Rd6–+) 26...Kc7 (26...Qb8!? 27.Qa5 Rd5 28.Qb4–+) 27.Qa5 Kb8 28.Ra1 (28.Rd1 Qd1 29.Bd1 Rd1 30.Kh2 Rd5–+) 28...Qe6 29.Bc2 Qc4?? (better is 29...Qf6 30.Qa8 Kc7 31.Qa5 Kd7–+) 30.Qa8 (30.Qe5 Kc8 31.Bf5 Qe6 32.Be6 Rd7 33.Ra8) 30...Kc7 31.Qa5 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

5.a4 Nd7 6.b5 c5 (6...Be7=) 7.Nf3 (7.Nc3 Ngf6=) 7...Nb6 (7...e4!? 8.Ng1 Ne5=+) 8.Qc2 (8.d3 a6 9.a5 Nd7+=) 8...a6 (8...e4 9.Ng1=) 9.Be2 (9.a5 Nd7 10.Nc3 Nh6+=) 9...e4= 10.Ng1 ab5 11.ab5 Ra1 12.Ba1 Qh4 (12...Qg5 13.g3 Qh6+=) 13.Nh3+= h5 (better 13...Nf6!?+=) 14.0–0 Nf6 15.Nf4 Bf7 16.Qa2 (16.g3 Qg5 17.h4 Qh6+–) 16...Be7 (16...Ng4 17.h3 Ne5 18.Nc3+–) 17.Qa5 (better 17.Qa7!? Nfd7 18.Bg7+–) 17...Bd8+= 18.Qa7 0–0 (18...Ng4 19.h3 Ne5 20.Qb7+–) 19.Qb7 (better 19.g3 Qg5 20.h4+–) 19...Bc4?? (better 19...Nc4 20.Qc6 Ng4+–) 20.Bc4+– Nc4 21.Ne6 Rf7 22.Qc8 Nd7 (22...Ne8 23.Rc1 Nb6 24.Qd8 Qd8 25.Nd8 Ra7+–) 23.Nd8 (worse 23.Qd8 Qd8 24.Nd8 Rf8+–) 23...Ndb6 24.Qb8 Nd7 25.Qa8 (better 25.Qc7 Re7 26.Nb7+–) 25...Ncb6 (25...Ndb6 26.g3 Qe7 27.Qb8+–) 26.Qa2 (26.Qc6!? Qd8 27.Qd6+–) 26...Qd8+= 27.Nc3 c4 28.Bb2 Qa8 (28...Nc5!?+=) 29.Qa8+– Na8 30.Ra1 Nc7 (30...Ndb6 31.Ne2 Nc7 32.Bd4+–) 31.Ra7 (31.Ba3!? Ne8 32.Bb4+–) 31...Nb6+= 32.Rb7 (32.h4 g6+–) 32...Nca8 33.Rf7 Kf7 34.h3 Nc7 35.f3 ef3 36.gf3 g5 37.Kf2 Ke6 38.e4 fe4 (38...d5 39.ef5 Kf5 40.Ke3=) 39.fe4+= Ke5?? (better 39...d5+=) 40.Nd5+– Ke4 41.Nc7 (41.Nb6?! Kd3+=) 41...Nc8 (41...Na4 42.Ba3 d5 43.Na8+–) 42.Ne6 g4 (42...Kd5 43.Ng5 Kc5 44.Kg3 Kb5 45.Kh4+–) 43.hg4 hg4 44.Kg3 Kd5 45.Nd4 Kc5 46.Kg4 Na7 (46...Nb6 47.Kf4+–) 47.Kf4 Nb5 (47...c3 48.Bc3 Nc8+–) 48.Nb5 Kb5 (48...Kc6 49.Bd4+–) 49.Ke4 Kc6 50.Kd4 Kb5 (50...d5 51.Ba3 Kb5+–) 51.Kd5 Kb4 (51...Ka5 52.Kc6 Ka6 53.Kd6 Kb6 54.Kd5 Kb5 55.Bc3 Kb6 56.Kc4 Kc6 57.d4 Kd6 58.Bb4 Ke6 59.d5 Kf5 60.d6 Kg6 61.Be1 Kf5 62.d7 Ke6 63.d8Q Kf5 64.Qd7 Kf4 65.Qf7 Kg4 66.Qg6 Kf3 67.Kd3 Kf4 68.Kd4 Kf3 69.Qe4) 52.Bc3 Kb5 (52...Kb3 53.Kd6 Kc2 54.Bb4 Kb2 55.Kc5 c3 56.Bc3 Kb3 57.Bb4 Kc2 58.Kc4 Kc1 59.d4 Kd1 60.d5 Ke2 61.d6 Ke3 62.d7 Kf4 63.d8Q Kg3 64.Qg5 Kf3 65.Qf5 Kg2 66.Qg4 Kf1 67.Qh3 Kf2 68.Kd3 Kg1 69.Bc5) 53.Kd6 Kb6 54.Kd5 Kb5 55.Kd4 Kc6 (55...Kb6 56.Kc4 Kc6 57.d4 Kd6 58.Bd2 Kd7 59.Kc5 Ke7 60.d5 Kd7 61.d6 Ke6 62.Bc1 Kd7 63.Bh6 Kc8 64.Kc6 Kd8 65.Bg5 Ke8 66.d7 Kf7 67.d8Q Kg6 68.Qg8 Kh5 69.Bf6 Kh6 70.Qg4 Kh7 71.Qg7) 56.Kc4 (56.Kc4 Kd6 57.d4 Ke6 58.d5 Ke7 59.Kc5 Kf7 60.Bd2 Ke7 61.d6 Kf6 62.Bc3 Kf5 63.d7 Ke4 64.d8Q Ke3 65.Qh4 Ke2 66.Qg3 Kf1 67.Kd4 Ke2 68.Qf4 Kd1 69.Qd2) 1–0. retiponziani (2000) – Nimzowitsch1988 (1715), ChessWorld.net, 2017.

5.Qa4 Bd7 6.b5 b6 7.c5 (better 7.d4!? e4 8.Nh3+=) 7...bc5=+ 8.Qc4 (8.Na3 Nf6=+) 8...Nf6–/+ 9.Nf3 (9.Nc3 c6–/+) 9...d5 (9...e4 10.Ng5 d5 11.Qc2–/+) 10.Qh4 h6 (better 10...e4 11.Ne5 Bd6–/+) 11.Be5+= Be7 12.Bf6 (12.Qg3 g5 13.h4 g4 14.Bc7 Qc8+=) 12...Bf6 13.Qh5 Kf8 14.Nc3 Bc3 15.dc3 Be8? (better 15...Qf6 16.Rc1 g6=) 16.Qf5+– Bf7? (16...Qf6 17.Qf6 (17.Qd5 Qc3 18.Kd1 Qa1 19.Kc2 Bg6 20.e4 Be4 21.Qe4 Qa2 22.Kc1 Qa3 23.Kc2 c6 24.Qf5 Ke7+–) 17...gf6 18.a4+–) 17.Be2 (17.Ne5!? Qf6 18.Qc8 Be8+–) 17...Nd7 18.Nh4 (18.Rd1 g6 19.Qc2 a6+–) 18...Nf6 (18...Qf6 19.Rc1 Ke7 20.Qf6 Kf6 21.Rd1+–) 19.Ng6 (19.c4 c6 20.bc6 Qa5 21.Kf1 dc4+–) 19...Bg6+– 20.Qg6 Qd7 (20...Qe8 21.Qe8 Ke8 22.Bf3+–) 21.0–0 (21.Rd1 Qf7 22.Qf7 Kf7+–) 21...Re8 (21...c4 22.a4+–) 22.Qg3 (22.c4 d4+–) 22...Kf7 (22...Ne4 23.Qf3 Kg8 24.c4+–) 23.Bd3 g5 (23...Ne4 24.Qf3 Kg8 25.Be4 de4 26.Qe2+–) 24.f4 (24.c4 c6 25.Rab1 cb5 26.Rb5 dc4 27.Bc4 Kg6+–) 24...Rhg8 25.Bh7?? (25.c4!? c6 26.a4 Qe6+–) 25...Rg7?? (better 25...Nh7 26.fg5 Kg7 27.gh6 Kh8=+) 26.Bc2 Qb5 (26...c6 27.fg5 Rg5 28.Qf4+–) 27.fg5+– Rg5 28.Qc7 Re7 29.Rf6! Kf6 Decoy to f6 30.Qd6 Re6 (30...Kf7 31.Rf1 Qf1 32.Kf1 c4 33.Qh6 Rge5+–) 31.Qd8 (31.Qf8 Ke5 32.Qf4) 31...Re7?? (31...Ke5 32.Rf1 Qb6 33.Qh8 Kd6 34.Qf8 Kc6 35.Ba4 Kb7+–) 32.Qh8 (better 32.Qf8 Ke6 33.Qh6 Kd7 34.Qg5 Qc6+–) 32...Kf7?? (32...Reg7 33.Rf1 Ke5+=) 33.Rf1+– Qf1 34.Kf1 Ke6 (34...Re6+–) 35.Qh6 (35.Qh6 Kf7 36.Qg5+–) 1–0. MARYMARY – chesselectric (1610), ChessWorld.net, 2012.

5.Nc3 Nc6 6.a3 Nf6 7.Nf3 e4 (7...Be7 8.d4 ed4 9.ed4=) 8.Ng5 Qd7 (8...Bd7 9.d4=) 9.Ne6 (9.d3 h6 10.Ne6 Qe6 11.de4 fe4+=) 9...Qe6 10.Nb5 (10.d4 Qd7+=) 10...0–0–0= 11.Qb3 (11.d4 d5+=) 11...a6+= 12.Nd4 Nd4 13.Bd4 g5 (13...c6 14.d3+=) 14.Be2 (14.b5 ab5 15.Qb5 c5+–) 14...h5 (14...Bg7 15.b5 ab5 16.Qb5+–) 15.Rb1 (15.b5 ab5 16.Qb5 c5+–) 15...h4 (better 15...Bg7!?+=) 16.b5+– a5 17.b6 (17.Qc3 Bg7 18.b6 c5 19.Qa5 Kd7+–) 17...c5 18.Bc3 f4 (18...h3 19.g3 d5 20.cd5 Qd6+–) 19.Ba5 (19.Qa4 Bg7+–) 19...f3? (better 19...h3 20.gh3 f3+=) 20.gf3+– ef3 21.Bf3 Qf5 (21...g4 22.Bd5 Nd5 23.cd5+–) 22.Bd5 (22.Be2+–) 22...Ng4? (better 22...Nd5!? 23.cd5 Bg7+–) 23.f3 (23.Bc3 Ne5+–) 23...Nf6 24.Bc3 Nd5 (24...Bg7 25.Bf6 Bf6 26.Ke2+–) 25.cd5 (better 25.Bh8!? Ne7 26.e4 Qf7+–) 25...Rh7 (25...Rg8 26.Rf1+–) 26.0–0 g4 (26...Bg7+–) 27.f4 (better 27.Qa4 gf3 28.Qa8 Kd7 29.Qb7 Ke8 30.Qc6 Ke7 31.Kf2+–) 27...g3+– 28.Qc4 Be7 29.Qe2 (29.e4 Qh3 30.Qe2 Rg8+–) 29…Rg8 (29...Rg8 30.e4 Qh3+–). jaddwarrior (1985) – espada_oro, ChessWorld.net, 2015.

5.Nc3 Ne7 6.a3 g5 7.Rc1 f4 (7...Ng6 8.d4=) 8.ef4 gf4 9.Be2 Bg7 10.Bh5 Kd7 11.Nf3 Bc4 12.Ne4 Bd5 13.d3 (13.Be5 Qf8 14.Bg7 Qg7 15.Qc2=) 13...Nbc6 (13...Nf5 14.Bg4 Rf8 15.Qc2=) 14.Bg4 (better is 14.b5+/–) 14...Be6?? (better is 14...Ke8=) 15.Nfg5?? (15.Be6 Ke6 16.Nfg5 Kd7 17.Qg4 Ke8 18.Ne6+–) 15...Bg4?? (15...Nf5 16.Ne6 Ke6 17.Bf5 Kf5 18.Qh5 Ke6 19.Ng5 Kd7 20.Qg4 Ke8+–) 16.Qg4+– Ke8 17.Ne6 (17.Ne6 Qc8 18.Qg7 Qe6 19.Qh8 Ng8 20.b5+–) 1–0. lican – maraquesh, internet, 2013.

5.d4 Nf6 6.de5 Ng4 (better is 6...de5!? 7.Qd8 Kd8=) 7.ed6+/– cd6 8.h3 Nf2? (better is 8...Ne5 9.Nd2 Qc7+/–) 9.Kf2+– Qh4 (9...Bc4 10.Nf3 (worse is 10.Bc4 Qh4 11.g3 Qc4+–) 10...Bf1 11.Rf1+–) 10.g3 Qe4 11.Nf3 Nd7 (11...Qc6 12.Nbd2+–) 12.Nbd2 (better is 12.Bd3 Qc6 13.Nd4+–) 12...Qc6 13.b5 Qb6 14.Bd4 Nc5 15.Nb3 (15.Ng5 Bg8+–) 15...0–0–0 (15...Ne4 16.Kg2 Qc7 17.Nbd2+–) 16.Ng5 Bg8 17.Qc2 Be7 (17...Kb8 18.Qf5 Re8 19.Nf7 Bf7 20.Qf7+–) 18.Nc5 dc5 19.Qf5 Kb8 20.Bg7 h6 21.Nf3 (better is 21.Nf7 Bf7 22.Bh8 Bg6 23.Qf4 Ka8 24.Qh6 Be4 25.Qb6 ab6+–) 21...Rh7 22.Be5 Ka8 23.Bg2 Rf7 24.Qh5 Rd2 (24...Qe6 25.Rad1 Rd1 26.Rd1 Qc4 27.Bf4 Qa2 28.Kg1+–) 25.Kg1 Rd8 26.Kh2 Bd6 27.Rad1 Be5 28.Ne5 Rd1 (28...Rf2+–) 29.Rd1 Rf8 30.Nd7 Qe6 31.Nf8 Qc8 32.Qh6 Bc4 33.Qf6 a6 34.Rd8 Qd8 35.Qd8 Ka7 36.b6 1–0. typ48 (1660) – limanda55, internet, 2013.

5.Nf3 Nc6 6.d4 Nb4 7.de5 de5 8.Be5 Qd1 9.Kd1 0–0–0 10.Kc1 Nd3 11.Bd3 Rd3 12.Bd4 =.

5.Nf3 e4 6.Nd4 Bd7 7.d3 c5 8.Nb5+= Bb5 9.cb5+/– cb4 10.de4+– b6? 11.Qh5 g6 12.Qf3 Nf6 13.e5 Ne4 14.ed6 Rg8 15.Bd3 Nd7 16.Be4 Bd6 17.Ba8 Be5 18.Bd4 Bd4 19.ed4 Qe7 20.Kf1 Nf6 21.Nc3 Kf7 22.Re1 Qd7 23.Bd5 Nd5 24.Qd5 Qd5 25.Nd5 Kg7 26.Re7 Kh6 27.Nb4 Rd8 28.Nc6 Rd5 29.a4 Kh5 30.Rh7 Kg5 31.Ra7 f4 32.Rb7 Rf5 33.h4 Kg4 34.f3 Kh5 35.Rh7# 1–0. pierre – rainman 1, ChessWorld.net, 2005.

5.Nf3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be6).

5.Nf3 g5=.

5.Nf3 Nh6 6.c5 (6.d4 Nc6= (6...Nd7 7.Nc3 Be7 8.Be2 0–0 9.0–0 a5 10.b5 e4; 6...a5 7.ba5 Nd7 8.Nbd2 Be7 9.c5 0–0 10.Nc4 e4) 7.d5 e4 8.Nfd2 Bd7 9.dc6 bc6 10.Be2 Nf7) 6...Nd7 (6...dc5 7.bc5 (7.Ne5 cb4 8.Qf3 Nd7 9.Qb7 Ne5 10.Be5 Bd5) 7...e4 (7...Bc5 8.Ne5 Nd7 9.Qc2 Bd6 10.Bc4 Bc4) 8.Nd4=+ Bf7 9.Qc2 Nc6 10.Bb5 Qd7; 6...a5 7.cd6 (7.ba5 Ra5 8.cd6 Bd6 9.Bc3 Nc6 10.Ba5 Na5) 7...Bd6 8.Ne5 0–0 9.b5 Nd7 10.Nf3 f4) 7.cd6 (7.d4 c6= (7...dc5 8.de5 cb4 9.Nd4 Qe7 10.Ne6 Qe6) 8.Nc3 e4 9.d5 Bd5 10.Nd5 cd5; 7.Qa4 c6 8.Na3 dc5 9.bc5 Nc5 10.Qc2 e4) 7...cd6 (7...Bd6 8.a3 (8.Na3 0–0 9.Bc4 Bf7 10.0–0 Bb4) 8...0–0 9.d4=+ (9.Nc3 Qe7 10.Nb5 e4) 9...e4 10.d5 Bf7) 8.b5 (8.d4 d5 (8...Be7 9.Nc3 0–0 10.Rc1 Rc8) 9.de5 Bb4 10.Bc3 Bc5+= (10...Bc3 11.Nc3 Rc8=); 8.Nc3 Be7 9.Bb5 0–0 10.0–0 Nb6) 8...Rc8=+ (8...Be7 9.Nc3 0–0 10.Be2 Rc8) 9.Be2 (9.Nc3 Be7 10.Be2 0–0) 9...Be7 10.0–0 (10.Nc3 0–0) 10...0–0 11.a4 Bd5 (11...Nb6 12.d3=+) 12.d4 (12.Nc3 Be6=) 12...e4 13.Nfd2 Nf6 (13...Qa5 14.Ra3=) 14.Nc3= Be6 15.Rc1 (15.a5 d5=) 15...d5 16.f3 Bd6 17.fe4 (17.Qb3!?=) 17...fe4=+ Black fights for the Initiative. 18.Ncb1? (better 18.Qb3!? Qe7 19.a5=+) 18...Nhg4–+ 19.Bg4 Ng4 20.g3 (20.Rf8 Qf8 21.Rc8 Bh2 (21...Qc8?! 22.Nf1–/+) 22.Kh1 Qc8–+) 20...Nh2 (better 20...Qg5 21.Rc8 Rc8–+ (21...Bc8?! 22.Rf8 Bf8 23.Nf1–+; worse 21...Qe3 22.Kg2 Bc8 23.Rf8 Bf8 24.Qf1–+)) 21.Rf8–/+ Kf8 22.Qh5 (22.Rc8 Bc8 23.Qh5 Bg3 24.Qh7 Kf7 25.Qh5 Kg8–/+) 22...Rc1–+ 23.Bc1 Bg3 24.Nf1?! (24.Kg2 Bd6 25.Ba3 Ba3 26.Qh2–+) 24...Nf1 25.Kf1 Qf6 26.Ke2 Qf2 27.Kd1 Threatening mate... how? 27...Qf3 28.Qf3 ef3 (28...ef3 29.Ba3 Kf7–+) 0–1. Hasler,Ulrich – Dommaschk,Jens, corr, 1990.

5.h4 Nd7 A) 6.Nf3 A1) 6...Nb6 7.Qc2 (7.Qb3 Nf6 8.Ng5 Bg8 9.d4 h6 10.Nh3 Ng4 11.h5=; 7.Na3 Bd7 8.Nb5 Be7 9.c5 Nd5 10.Qb3 Ngf6 11.Bc4=) 7...Bd7 8.a4 e4 9.a5 Nc8 10.Ng5 h6 11.Nh3=; A2) 6...Ngf6 7.d4 Bg8 8.de5 de5 9.c5 Qe7 10.Qa4 f4 11.Nbd2=; A3) 6...Be7 7.d4 Nh6 8.Qa4 c6 9.Nbd2 Ng4 10.h5 0–0 11.Qb3=+; B) 6.d4 B1) 6...d5 7.a3 (7.cd5 Bd5 8.a3 e4 9.Nc3 Bf7 10.g4 fg4 11.Bg2=) 7...dc4 8.d5 Bf7 9.Bc4 a5 10.Nf3 ab4 11.Ne5=; B2) 6...ed4 7.Bd4 c5 8.Bc3 Ngf6 9.bc5 dc5 10.Nh3 Qe7 11.Ng5=.

5.h4 e4 6.Nh3 Nf6 (6...Nc6 7.Ng5 Bc8 8.a3 Ne5 9.d4 ed3 10.Bd3 Be7 11.Nf3=) 7.Nf4 Bf7 8.d4 Be7 9.d5 c6 10.Be2 0–0 11.h5=.

5.h4 Be7 6.Nf3 Nh6 (6...Bd7 7.c5 Nf6 8.Qb3 e4 9.Ng5 d5 10.Bf6 gf6 11.Nh3+=; 6...Nf6 7.d4 0–0 8.Ng5 Bc8 9.de5 de5 10.Qd8 Rd8 11.c5=) 7.d4 Ng4 8.de5 de5 9.Qd8 Kd8 10.a3 Nd7 11.Nc3=.

5.Qh5 Kd7 6.Qd1 Nf6 7.Be2 Kc8 8.d4 ed4 9.ed4 Nbd7 (9...d5!? 10.c5 Nc6=) 10.d5+= Bf7 11.Nf3 h6 12.0–0 Be7 13.Nd4 g6 14.Ne6 (better 14.Re1!?+–) 14...Be6= 15.de6 Ne5 (15...Nf8 16.c5 dc5 17.Qb3=) 16.Qc2 (better 16.c5+–) 16...Re8?? (better 16...Qg8!?=+) 17.Rd1 (better 17.Be5 de5 18.Rd1+–) 17...Nc6+– 18.a3 Bf8 19.c5 (better 19.Bf3!?+–) 19...Re6= 20.Bf3 (20.Bc4 d5=) 20...Ne5 21.Be5 Re5 22.cd6 Bd6 23.Nc3 Qe8 24.Kf1 (24.Nb5 Rb5 25.Rd6 Re5=) 24...Re6 25.Nd5 Nd5 26.Bd5 Re7 (26...Bh2 27.Be6 Qe6 28.g3+–) 27.Bf3 Rb8?? (better 27...Be5 28.Rab1 a6=+ (worse 28...Bh2 29.g3+=)) 28.Rd6+– Qb5 29.Kg1 1–0. GuestQGGJ – GuestQBTQ, freechess.org, 2017.

5.a4 Nf6

6.d3 Nc6 7.b5= Ne7 8.Nf3 Qd7 9.Be2 g6 10.d4+= ed4 11.Bd4 Bg7 12.0–0 0–0 13.Ng5 Rad8 14.Ne6 Qe6+= 15.a5 c5= 16.Bb2 d5 17.Qc2 d4 18.ed4+= cd4 19.Qd3 Ng4 20.Bg4 fg4 21.Nd2 Rf7 22.Ne4 Nf5? 23.Ng5+– Qd7 24.Nf7 Qf7 25.c5 Qd5 26.Rfc1 Nh4 27.Qg3 g5 28.Qg4 h5 29.Qg3 Be5?? 30.Qg5 Kf7 31.Qh4 Rg8 32.Qh5 Ke7 33.g3 Kd8 34.c6 b6 35.c7 Kc8 36.Qf5 Kb7 37.a6 Ka8 38.c8Q Rc8 39.Rc8 Bb8 1–0. hal1958 – adamant, playchess.de, 2002.

6.Be2 Nbd7 (6...Nc6!?=+) 7.Nf3= Be7 8.0–0 0–0 (8...a5 9.Ng5 Bg8 10.b5+=) 9.b5 (9.Ng5 Bf7+–) 9...Nc5 (9...Qc8 10.Nc3=) 10.d4+= ed4 11.ed4 (better 11.Nd4 Qd7 12.Qc2=) 11...Ncd7 (11...Nce4 12.d5 Bd7 13.Nd4=) 12.Re1 (12.Ng5 Bf7+–) 12...Re8 (12...Ne4!?+=) 13.Bd3 Bf8 (13...Ne4 14.Nc3 Nc3 15.Bc3+–) 14.Qc2 (14.Ng5!? Ne4 15.Ne6 Re6+–) 14...g6 15.d5 (better 15.Ng5!? Bf7 16.Nd2+–) 15...Bf7+= 16.Nbd2 Bg7 17.Ng5 (better 17.Nb3+=) 17...Ne4? (17...Nc5 18.Nb3 Nb3 (worse 18...Nd3 19.Qd3 Qd7 20.Na5+=) 19.Qb3 Nd7 20.Bg7 Kg7 21.Qb2 Qf6 22.Qf6 Nf6= (worse 22...Kf6 23.Nh7 Kg7 24.Ng5+–)) 18.Nge4 (18.Be4?! Qg5 19.Nf3 Qf4=; 18.Nf7?! Kf7 19.Bg7 Kg7 20.Be4 fe4 21.Ne4 Kg8+–) 18...fe4 19.Ne4 Ne5 20.Be5 (better 20.Be2!?+–) 20...Be5+– 21.Rab1 Bg7 22.h3 (22.Qd2 Qe7+–) 22...Re7 (better 22...Qh4+–) 23.Ng5?? (better 23.a5+–) 23...Re1–+ 24.Re1 Qg5 25.Re4 Re8 26.Re8 (26.h4 Qh5 27.g3 Re4 28.Be4 Qe5–+) 26...Be8 27.Qe2 Bd7 28.Qe3 b6 (better 28...Qe3 29.fe3 Kf7–+) 29.Qg5+– (29.Qg5 Be8 30.Qd8+–) 1–0. retiponziani (1935) – mrgiff (1860), ChessWorld.net, 2016.

5.b5 Nf6

6.Nc3 Nbd7 7.d4 Be7 8.d5 Bf7 9.Be2 g6 10.Nf3 Nb6 11.Ng5 (11.a4 Nbd7+=) 11...h6 (better is 11...Nfd5!? 12.Nf7 Nc3 13.Nd6 Bd6 14.Bc3 Qf6=) 12.Nf7+/– Kf7 13.a4 a6 14.a5 Nbd7 15.Qb3 Nc5 16.Qc2 ab5 17.cb5 (worse is 17.Nb5 c6 18.Nc3 Ra5+=) 17...Qd7 18.0–0 Kg7 19.a6 b6? (better is 19...ba6!? 20.ba6 Qc8+=) 20.Na4 Nd5 21.Nc5 bc5 22.Bf3 (better is 22.Rfd1!? c6 23.bc6 Qc6 24.Bf3+/–) 22...Nb4+= 23.Qc4 d5 (better is 23...c6 24.b6 Rhb8+=) 24.Be5+– Kh7 25.Rfd1 (25.Bh8 Kh8 (25...dc4 26.Ba8 Qd8 27.Bb7+–) 26.Rfd1 c6 (26...dc4 27.Rd7 Ra7 28.Re7+–) 27.bc6 Qc6 (27...dc4 28.Rd7 Ra6 29.Ra6 Na6 30.Re7+–) 28.Bd5 Nd5 29.Rd5 Ra7+–) 25...Rhd8 (25...dc4?? 26.Rd7 Rhe8 27.Ba8 Ra8 28.Re7 Kg8 29.Rg7 Kf8 30.Rh7+–) 26.Qb3 (better is 26.Bb2+–) 26...Qb5= 27.Bd5?? (better is 27.Bc7 c4 28.Qc3=) 27...Ra6?? (better is 27...c4 28.Bc4 Qe5–+) 28.Bc4 (28.Bg8 Rg8 29.Qf7 Rg7 30.Qg7) 28...Ra1 29.Ra1 Qc6 30.h3 1–0. typ48 – ottorr, internet, 2013.

6.Be2 Be7 7.Nf3 0–0 8.Ng5 Qd7 9.Ne6 Qe6 10.Nc3 c5 11.a4 Nbd7 12.0–0 e4 13.f4 Kh8 14.Qb3 b6 15.a5 h6 16.Rad1 (16.ab6 Nb6 17.Ra6+/–) 16...g5? (better is 16...ba5 17.Ra1 Bd8=) 17.fg5+– hg5 18.a6 Ne5 19.Nd5 Nd5 20.cd5 Qh6 Black intends f4 21.d4 ed3 22.Bd3 f4 23.ef4 gf4 24.Rf3 Qg5 25.Rh3 Kg7 26.Rf1 Rh8 27.Rhf3 Bf6 (27...Rh4!? 28.Qc4 Rf8+/–) 28.Rf4+– Raf8 29.Be2 Qh6?? (29...Rh6 30.Bc1 Qg6 31.Rf5+–) 30.h3 (better is 30.Qg3!? Qg6 31.Be5 Qg3 32.Bf6 Rf6 33.hg3 Rhf8+–) 30...Bg5? (30...Qg5 31.Rf5 Qh4 32.Qe3+–) 31.Be5 (better is 31.Qg3 Rf4 32.Rf4+–) 31...de5 32.Rf8 Rf8 33.Rf8 Kf8 34.Qf3 Qf6 35.Qf6 Bf6 36.Bf3 (36.Kf2!?+–) 36...c4 37.Be4 c3 38.Kf2 Bg5 39.Ke2 Ke7 40.Kd3 Bd2 41.h4 Kd6 42.Kc4 Be1 43.h5 Bd2 44.g4 Kc7 45.Bc2 Kd6 46.Bd1 e4 47.Kd4 e3 48.Kd3 Kd5? 49.Ke2 Ke5 50.h6 Kf6?? 51.h7 Kg7+/– 52.Bc2 Bc1 53.Kd3 Bd2 54.Ke2 Bc1 55.Kf3 Bd2 56.g5 Bc1 57.g6 Bd2 58.Ke2 Bc1 59.Kd1 Bd2 60.Ke2 Bc1 61.Kd1 Bd2 62.Ke2 ½–½. typ48 – swojak777, internet, 2013.

5.Nc3 Nf6

6.d4 ed4!? 7.ed4 Qe7 =.

6.d4 e4 7.d5+= Bd7 8.f4 Be7 9.a4 0–0 10.h3 a5 11.b5 c6 12.Nge2 cd5 13.Nd5 Nd5 14.Qd5 Kh8 15.Nc3 (15.Qb7 Na6 16.ba6 Rb8 17.Bg7 Kg7+/–) 15...Ra7 (15...Qc8!? 16.Qd2 Bh4 17.Kd1 Be6=) 16.Be2 Bh4 17.Kd2 Qe7 (17...Bc8!?=) 18.Qd4 Ra8 19.Nd5 Qf7 20.g3 Bd8 (20...Bg3 21.Bh5 Qg8 22.Rhg1+–) 21.g4 Be6 22.gf5 Bd5 23.Qd5 (worse is 23.cd5 Bf6 24.Qe4 Bb2–/+) 23...Qd5 24.cd5 Rf5 25.Bc4 (25.Rhg1!? Bf6 26.Bf6 gf6 27.Kc2+–) 25...Nd7+= 26.Rhg1 Nf6 (26...Bf6 27.Bf6 Nf6 28.Rg5 Rg5 29.fg5=) 27.Bf6 (27.Rac1!?+/–) 27...Bf6+= 28.Rac1 Rc8? (28...Rg8 29.Bb3+=) 29.Bb3 (better is 29.Bd3 Re8 30.Be4+–) 29...Rc1+= 30.Rc1 h6? (30...g5 31.Rc8 Kg7 32.Rc7 Kh6 33.fg5 Rg5 34.Rb7 Rg2 35.Kc1+=) 31.Rc7 (31.Rc8 Kh7+–) 31...Rh5? (31...g5 32.fg5 Bg5 33.Rb7+=) 32.Bc2 (32.Rc8 Kh7 33.Bc2 Rh3 34.Be4 g6+–) 32...Rh3? (better is 32...Rd5!? 33.Kc1 Rc5 34.Rb7 d5+/–) 33.Be4+– (33.Rb7 Rh2 34.Kc1 Rh1 35.Bd1 g5+–) 33...g5 34.Rb7 gf4 35.ef4 h5 (35...Ra3 36.Rh7 Kg8 37.Rh6 Ra4 38.Rf6 Re4 39.b6 Rd4 40.Ke3 Rd5 41.Rg6 Kf7 42.Rg5+–) 36.Rd7 h4 (36...Ra3 37.b6 Ra4 38.b7 Rd4 39.Bd3+–) 37.Rd6 Kg7 38.Ra6 (38.Rd7 Kf8 39.b6 Rh2 40.Ke1 Rb2+–) 38...Kf7 (38...Bd4 39.f5+–) 39.Ke2 Rh2 40.Kf3 Bc3 41.Ra7 Kf6 42.d6 Ke6 (42...h3+–) 43.d7 Ke7 44.Bc6 Rd2 45.Ra8 h3 (45...Rd7 46.Bd7 Kd7+–) 46.Re8 Kf6 47.d8Q Rd8 48.Rd8 h2 49.Kg2 (49.Kg2 Kf5 50.Rf8 Ke6 51.b6+–) 1–0. tyop (1700) – altobeli (1620), internet, 2013.

6.Nf3 a5 7.b5 Bd7 8.Be2 Be7 9.0–0 e4 10.Nd4.

6.Nf3 Nc6 7.b5 (7.Ng5 Bd7 8.b5 Ne7 9.Be2 a6 10.ba6; 7.a3 e4 8.Ng5 Bd7 9.d4 h6 10.Nh3; 7.d4 ed4 8.Nd4 Nd4 9.Qd4 Be7 10.Bd3) 7...Nb8 8.d4 Nbd7 9.Be2 e4 10.Ng5.

6.Nf3 Bd7 7.d3 (7.Be2 Be7 8.0–0 e4 9.Ng5 Nc6 10.Nd5; 7.Nd5 Nd5 8.cd5 Be7 9.Rc1 Bf6 10.d4; 7.a3 e4 8.Nd4 Be7 9.Be2 0–0 10.0–0) 7...Be7 8.Be2 a6 9.0–0 0–0 10.Qb3.

6.Nf3 Be7 7.a3 0–0 (7...Bd7 8.Be2= e4 9.Nd4 0–0 10.0–0) 8.d4 e4 (8...a5 9.de5 de5 10.Qd8) 9.Nd2 (9.Ng5 Bd7= 10.Be2; 9.d5 Bd7 10.Nd4) 9...Nbd7 (9...d5 10.cd5 Nd5 11.Nd5 Bd5 12.Bc4=) 10.c5 (10.d5 Bf7=) 10...d5 (10...dc5 11.dc5 a5 12.Bc4 Bc4 13.Nc4 ab4 14.ab4 Ra1 15.Ba1=) 11.Nb3 (11.Be2 Qe8=) 11...c6 12.a4 (12.Ne2 Qc7=) 12...Qc7 (12...Rb8 13.b5=+) 13.g3 (13.Ne2 Bf7=) 13...h6 (13...Bf7 14.Be2=+) 14.Be2 Ng4 (14...b6 15.0–0=+) 15.b5 (15.0–0 b6=) 15…Ngf6 ½–½. van Oosterom,Chiel – Ris,Robert, Rijswijk, 2000.

6.Nf3 Be7 7.Qb3 e4 8.Ng5 Bc8 9.d3 a5 10.Qa4.

6.Nf3 Be7 7.b5 a6 8.d4 Nbd7 9.ba6 Ra6 10.Be2.

6.Nf3 Be7 7.d3 0–0 8.g3 Kh8 9.Bg2 Nbd7 10.0–0 a5 11.b5 Nc5 Black intends e4 12.a4 (12.Ng5!? Bg8 13.d4=) 12...e4+= 13.Nd4 Nd3?? (better is 13...Bf7 14.Nf5 Nd3+=) 14.Ne6+– Nb2 15.Qb3 (15.Qb3 Qc8 16.Nf8+–) 1–0. kannisogoet – fulzbych, internet, 2013.

6.Nf3 Be7 7.d4 0–0= 8.Ng5 Qc8 9.Ne6 Qe6 10.Be2.

6.Nf3 h6 7.Be2 Nbd7 8.0–0 g5 9.d4 e4 10.Nd2 d5 11.cd5 Nd5 12.Bh5 Ke7 13.Nd5 Bd5 14.f3 Nf6 15.fe4 Nh5 (better 15...fe4!? 16.Bg6 Qd6+=) 16.ed5+– Ng7 17.e4 f4 (17...fe4 18.Qb3+–) 18.g3 (18.Nf3 Qd6+–) 18...Qd6 (18...fg3 19.hg3 Qd6 20.Qf3+–) 19.Nc4 Qb4?? (19...Qa6 20.Ne5 Rg8+–) 20.Ba3 (20.Ba3 Qa3 21.Na3 fg3 22.hg3+–) 1–0. DEFFM – GuestTLWD, freechess.org, 2018.

5.d3 Nf6

6.Nd2 Nbd7 7.Ne2 h6 8.h4 Be7 9.d4 c6 10.Qc2 0–0 11.Nb3 Ng4 12.g3 f4 13.ef4= ef4 14.Nf4+= Rf4 15.gf4+/– Bh4 16.Rh4 Qh4–/+ 17.Nc1?? Re8–+ 18.Bd3 Bf5 19.Kd2 Qf2 20.Kc3 Qf3 21.Qd2 Nf2 22.Kc2 Nd3 (22...Nd3 23.Bc3 N3c5 24.Nd3 Bd3 25.Kb2 Na4 26.Ka3 Re2–+) 0–1. Suess,Stefan – Dvorak, Verbandsliga, 1980.

6.Nd2 Be7 7.g3 0–0 8.Bg2 Nc6 9.b5= Nb8? 10.Bb7+– Nbd7 11.Ba8 Qa8 12.f3 Nc5 13.Qe2 e4+/– 14.d4?? Nd3–/+ 15.Kf1 Nb2 16.a4 Nd3 17.f4 c6 18.Nh3 cb5 19.ab5–/+ Rc8 20.Nf2 Nf2 21.Kf2 Ng4 22.Kg2=+ Bc4?? 23.Nc4+– Rc4? 24.Qc4 Kh8 25.Rhe1 Qb7 26.Qc6 (26.Qc6 Qc6 27.bc6+–) 1–0. alaamattar (2205) – tomy (2175), net–chess.com, 2005.

6.Nf3 Be7 7.Nbd2 Nbd7 8.Be2 Nb6 9.0–0 Qd7 10.Ng5+= h6 11.Bh5 Nh5 12.c5?? Bg5 13.cb6 ab6?? 14.d4? 0–0 15.de5? f4 16.Qh5 Bg4 17.Qg6 fe3 18.Ne4 ef2 19.Nf2–/+ Bf5 20.Qh5 g6 21.Qe2–/+ de5 22.Qe5 Bf6 23.Qe2 Bb2 24.Qb2 Qc6 25.Rac1 Qd6 26.Rfd1 Qf6 27.Qf6 Rf6 28.Rc7 Bc2?? 29.Rdd7 Ra2= 30.Rd8 Rf8=+ 31.Rf8 Kf8 32.h3 Rb2 33.Ng4 h5 34.Ne3 Be4=+ 35.Rc4 Bc6 36.Nc2 b5–/+ 37.Rc5 Ke7 38.g4 hg4–+ 39.hg4 Kd6 40.Kf2?? Rb4 41.Rc6= bc6 42.Nb4 Kc5 43.Nd3 Kd4 44.Nb4 c5 45.Nc6 Kc3 46.Ne5 b4–/+ 47.Ke3 b3–+ 48.Nf3 b2 49.Nd2=+ c4 50.Ke2?? Kc2?? 51.Nc4+= g5?? 52.Ke3 Kc3?? 53.Nb2!+– Kb2 54.Ke4 Kc3 55.Kf5 Kd4 56.Kg5 Ke5 57.Kh6 Kf6 58.g5 Kf7 59.g6 Kg8 60.g7 (60.g7 Kf7 61.Kh7+–) 1–0. vidyashankarh (1930) – nickbarletta (1865), net–chess.com, 2003.

5.d4 ed4

6.ed4 Qe7 7.Qh5 Kd8 8.Qe2 =.

6.ed4 Nf6 7.d5 Bf7 8.Bd3 Qd7 9.Ne2 Na6 10.a3 0–0–0 11.0–0 Be7 12.Ng3 g6 13.Qc2 Rhg8? (better is 13...Kb8!?+/–) 14.Nf5!+– Kb8 (14...gf5 15.Bf5 Double attack) 15.Ne7 Qe7 16.Nd2 Rg7?? (16...Rde8+–) 17.Rae1 Qd7 (17...Qf8 18.Bf6 Rg8 19.Bd8 Qd8 20.Re4+–) 18.Bf6 (18.Bf6 Bg8 19.Qc3+–) 1–0. typ48 – hollymen, internet, 2013.

5.d4 Nd7

6.Qa4 Ngf6 7.Nf3 Ne4 8.de5+= de5 9.Be5 b5? 10.cb5+/– Nb6 11.Qc2 Bb4+/– 12.Nfd2 0–0 13.Nc3 Nf2?? 14.Kf2+– f4 15.ef4 Rf4 16.Bf4 Qf6 17.Nce4 Qf4 18.Nf3 Rf8 19.Bd3 Nd5 20.Rhe1 Qh2? 21.Neg5 Bd6 22.Re6 Bg3 23.Ke2 Qg2 24.Kd1 Qh1 25.Ne1 Qh5 26.Ngf3 Be1 27.Re1 Rf3 28.Kc1 Ne3 29.Qc7 Qg5 30.Kb1 Rf7 31.Qc8 (31.Qc8 Rf8 32.Qe6 Kh8 33.Qe3+–) 1–0. Mooiste – van Italie, TN.94.6.154 corr, 1993.

6.Nd2 ed4 7.Bd4 (7.ed4 d5 8.c5 a5 9.ba5 Ngf6 10.Nh3) 7...Ngf6 8.Nh3+= (8.Ngf3 Ne5 9.Ng5 Bd7 10.Be2) 8...Qe7 9.Qa4 Ng4 10.Nf4.

6.Nd2 Be7 A) 7.Ngf3 Nh6 8.de5 Ne5 9.Qa4 Bd7 10.Qb3; B) 7.Be2 Nh6 (7...c6 8.Ngf3 Nh6 9.0–0 0–0 10.e4; 7...a5 8.Ngf3 ab4 9.de5 de5 10.0–0) 8.d5 Bf7 9.Ngf3 0–0 10.0–0; C) 7.d5 Bf7 8.Ngf3 a5 9.a3 Ngf6 10.Be2.

6.Nd2 g6 7.de5 (7.Nh3 a5 (7...Ngf6 8.Ng5 Bf7 9.Be2 Bh6 10.Nf7) 8.ba5 (8.b5 Ngf6 9.Ng5 Qe7 10.g3) 8...Nh6+= 9.Qb3 Ra5 10.de5; 7.Ngf3 Bg7 8.h4 Ngf6 9.Ng5 Qe7 10.Be2; 7.Qa4 Bg7 8.d5 Bf7 9.Ngf3 a5 10.Be2; 7.Qb3 Bg7 (7...Nh6 8.Ngf3 Bg7 9.d5 Bf7 10.Be2) 8.Ngf3 Ngf6 9.Ng5 Qe7 10.Be2) 7...de5= (7...Ne5? 8.f4 Nf7 9.Bh8 Nh8 10.Ngf3+–) 8.a3 (8.Qa4 a5 9.ba5 Ngf6= 10.Ngf3) 8...Qe7 (8...Nh6 9.Ngf3 Bg7 10.Bd3) 9.Ne2 (9.Ngf3!?= Bg7 10.Be2) 9...Bg7 (9...Ngf6 10.g3=+ (10.Qa4=+)) 10.Qc2 (10.g3 0–0–0=+) 10...Ngf6 11.Rd1 (11.g3 0–0–0=+) 11...0–0 (better 11...a5 12.ba5 f4 13.ef4 ef4–/+) 12.Ng3? (better 12.g3=+) 12...f4–+ 13.ef4 Bg4?? (better 13...ef4 14.Nge4 Bf5 15.Bf6 Nf6–+ (15...Bf6?! 16.Bd3–/+; 15...Rf6?! 16.c5–/+)) 14.f3=+ ef4 15.Nge4 Ne4 (15...Be6 16.Bd3 a5 17.ba5 Ne4 18.Be4 Ra5 19.Nb3=+) 16.Ne4 Qh4 17.Kd2 Bb2 18.Qb2 Bf5 (18...Qe7 19.Bd3 Be6 20.Kc1=+) 19.Kc1 (19.c5 Be6=) 19...Qe7 (19...Be4 20.fe4 Qe7 21.h4=+) 20.Bd3=+ a5 (20...Ne5 21.Qc3=+) 21.Rhe1 ab4 22.ab4 Ne5 23.Nc5 (23.Nf6 Rf6 24.Re5 Qf7 25.Bf5 Rf5= (worse 25...gf5 26.Rdd5+=)) 23...Nd3–/+ 24.Nd3 Qd6 (24...Qf7!? 25.Qb3 Ra1 26.Kb2 Qf6 27.Ne5 Rd1 28.c5 Be6 29.Qd1 Rd8–/+) 25.Nc5= Qf6 (25...Qc6 26.Re7 Rf7 27.Rde1=) 26.Qf6 Rf6 27.Kb2 Kf8 (27...b6 28.Nb3=) 28.Nd7 (28.Re2 b6 29.Nd7 Bd7 30.Rd7 Rf7=) 28...Bd7= 29.Rd7 Rf7 30.Red1 (30.Rd4 Re8 31.Re8 Ke8=) 30...Re8 (30...Re7 31.R1d4=) 31.Rf7+= Kf7 ½–½. Suess,Stefan – Dvorak, corr, 1985.

6.Nd2 Nh6 7.Ngf3 (7.d5 Bf7 8.Ngf3 Be7 9.Be2 0–0 10.0–0) 7...Be7 8.de5 Ne5 9.Qa4 Bd7 10.Qb3.

6.de5 Ne5 7.Nd2 Nf6 8.Ngf3 Nf3 9.Nf3 Be7 10.Nd4 Bd7 11.Bd3 c5 (11...d5!? 12.Qb3 c5 13.bc5 Ne4 14.Be4 de4+=) 12.Nf5+/– Bf5 13.Bf5 cb4 14.Qa4 Kf7 15.Qb4 d5 16.c5 b6 17.Bd4 Nd7 18.Qb3 Nf6? (better is 18...Nc5 19.Qb2 Bf6+/–) 19.cb6+– ab6 20.Qb6 (20.Bb6 Qb8 21.Qb1 g6+–) 20...Qb6 21.Bb6 Bb4 22.Ke2 Bc3 23.Rac1 Ra2 24.Kf3 Be5 25.Bd4 Bd4 26.ed4 (26.Rc7!? Kf8 27.ed4+–) 26...Re8+/– 27.Rhe1 Re1 28.Re1 Ra3 29.Re3 Ra7 30.g4 g6 (30...g5!?+/–) 31.Be6+– Kg7 32.g5 Ne4 33.Bd5 Ng5 34.Kg4 h6 35.h4 Rd7 36.hg5 h5 37.Kf4 (better is 37.Kh4!? Rd5 38.Re4+/–) 37...Rd5+= 38.Ke4 Rg5 39.d5 Rf5 40.d6 Rf2? (better is 40...Kf7 41.f4 h4=) 41.d7+– Rf8 42.Kd5 Rd8 43.Kd6 h4 44.Ke7 Rd7 45.Kd7 Kf6 46.Kd6 Kf5 47.Kd5 g5 48.Rf3 Kg4 49.Ke4 h3 50.Rf1 h2 51.Ke3 Kg3 52.Rf3 Kg2 53.Rf2 Kg1 54.Kf3?? (better is 54.Rd2=) 54...h1Q–+ 55.Ke3 Qh3 56.Ke2 (56.Rf3 g4 57.Rh3 gh3–+) 56...Qe6 (56...Qe6 57.Kf3 Qf5 58.Ke3 Qf2 59.Ke4 g4–+) 0–1. kaasparov – fulzbych, internet, 2013.

6.Nf3 d5 7.cd5 Bd5 8.de5 Bb4 9.Bc3 Bc3 10.Nc3 +=.

6.Nf3 e4 7.Nfd2 Ngf6 8.Nc3 c6 9.Rc1 a6 10.a4 Be7 11.g3 0–0 12.c5 dc5 13.bc5=+ b6 14.cb6 Nb6 15.Ncb1 Qd7 16.Ba3 Rfc8 17.Be2 Ba3 18.Na3 c5 19.a5 Na4 20.dc5 Nc5 21.Ndc4=+ Qc7 22.0–0 Rd8 23.Qc2 Nd3–/+ 24.Nb6 Qe7 25.Ra1 Ra7–/+ 26.Rfd1 Rc7 27.Qa4 Rc3 28.Nac4 Bc4 29.Nc4 Qc5 30.Nb2=+ Qc7 31.Rd2= Rc1 32.Rc1 Qc1 33.Qd1 Qc3 34.Nd3+= ed3 35.Rd3+/– Rd3 36.Qd3 Qa5 37.Qa6 Qa6 38.Ba6 Kf7 39.Bc8 g6 40.Kg2 Ne4 41.h4 h5 42.Bb7 Nc5 43.Bd5 Kf6 44.Bc6 Nd3 45.Be8 ½–½. Wilk,Krzysztof (1890) – Bylica,Michal (2000), Poland–chT2 U18, 1996.

6.Qh5 g6 7.Qd1 Bg7 8.f4 ef4=+ 9.ef4 Ne7 10.Qc2 Nc6 11.Bc3?? Bd4 12.b5=+ Bc3 13.Qc3+= Ke7? 14.bc6+– bc6 15.Nf3 Nc5 16.Nd4 Ne4? 17.Nc6+– Kd7 18.Nd8 Nc3 19.Ne6 Ke6 20.Nc3 a5 21.Na4 c6 22.c5 d5 23.Be2 Rhe8 24.0–0 Kd7 25.Nb6 Kc7 26.Na8 (26.Na8 Ra8 27.Rfe1+–) 1–0. bentengutama – nickbarletta (1880), net–chess.com, 2002.

6.d5 Bf7

7.Qa4 Ngf6 8.Ne2 Be7 9.Ng3 Bg6 10.h4 f4 11.ef4 ef4 12.Ne2 Nh5 13.Nd4 Bf6 (13...Bh4 14.Ne6 Qe7 15.Rh4 Qh4 16.Nc7 Kd8 17.Na8 Re8 18.Be2–+) 14.Ne6? (14.Be2 Qe7 (14...Bh4? 15.Ne6 Qe7 16.Nc7 Kf7 17.Na8+–) 15.Qa3 Bd4 (worse is 15...Bh4 16.Ne6+/–) 16.Bd4 a5+=) 14...Qe7?? (14...Bb2!? 15.Nd8 Kd8 16.Qb3 Ba1 17.Bd3–+) 15.Qb3 (15.Nc3!? Bf5 16.Kd1 Be6 17.de6 Qe6 18.Be2=) 15...Bf7 16.Be2 Be6 17.de6 Qe6 18.Kd1 Qf7 19.Nc3 0–0 20.Bf3 c6 21.Ne4 Rad8 22.Bf6 Nhf6–/+ 23.Ng5 Qe7 24.Re1 Ne5 25.c5 d5 26.Qc3 Rfe8 27.Kc2 h6 28.Nh3 Qe6 29.Re2? Qf5 30.Kd1 Kh8 31.Qc2 Ne4 32.Be4 de4 33.Rd2 Qg4 34.Kc1 Nd3 35.Kb1 Qg2 36.Ng5 hg5 37.hg5 Qg5 38.f3 Qd5 39.Qc3 e3 40.Rg2 Ne5 41.Kc2 Qd3 42.Qd3 Nd3 43.Rag1 Rd7 44.Re2 Nb4 45.Kc3 Nd3 0–1. Sebastian Enesco,Alex (1780) – Camarero Izquierdo,Juan C (1915), San Sebastian De Los Reyes ESP, 2011.

7.b5 Be7 A) 8.Nc3 Ngf6 9.Nf3 Nc5 10.Be2 0–0 11.0–0; B) 8.Be2 Nc5 (8...Ngf6 9.Nc3 0–0 10.Nf3 Nc5 11.0–0) 9.Nc3 Nf6 10.Nf3 0–0 11.0–0; C) 8.Nf3 Nc5 (8...Ngf6 9.Nc3 Nc5 10.Be2 0–0 11.0–0) 9.Nc3 Nf6 10.Be2 0–0 11.0–0.

7.b5 Ngf6 8.Nc3 (8.Nf3 Nc5 (8...Be7 9.Nc3 0–0 10.Ng5 Nd5 11.Nf7) 9.Nc3 Nfe4 10.g3 Qf6 11.Bh3; 8.Nh3 Nc5 (8...Be7 9.Nc3 Nc5 10.Be2 Nfe4 11.0–0) 9.Nc3 Be7 10.Be2 Nfe4 11.0–0) 8...g6 (8...Nc5 9.Be2= (9.Nf3 Be7 10.Ng5 Bh5 11.Be2) 9...Be7 10.Nf3 0–0 11.0–0; 8...Be7 9.Nf3 0–0 10.Ng5 Nd5 11.Nf7; 8...a6 9.Nf3 ab5 10.cb5 Nc5 11.Bc4) 9.Nf3 h6 (9...Bg7 10.Be2= (10.Ng5 0–0 11.Nf7) 10...0–0 11.0–0; 9...Bh6 10.Be2 0–0 11.0–0) 10.Be2 Bg7 11.Qc2 (11.0–0 0–0=) 11...Nc5 (11...a6 12.a4=) 12.a4 (12.0–0 0–0=) 12...0–0 (12...Qe7 13.0–0=) 13.0–0 Qe8 Black intends e4 (13...a6 14.Rfd1=) 14.Rfd1 g5 Black prepares f4 (14...e4 15.Nd2=) 15.Ne1 (15.Ba3 Nce4+=) 15...Bg6= 16.Bd3 (16.f3 g4=) 16...e4 17.Bf1 Ng4 (17...f4 18.a5=+) 18.Ne2 (18.Be2 Qe5 19.Bg4 fg4=) 18...f4 19.Bg7 Kg7 20.ef4 gf4 21.h3 (21.Qc3 Qe5 22.Nd4 Rfe8=+) 21...Ne5 (21...e3 22.Qc3 Qe5 23.hg4 ef2 24.Kh2 fe1B 25.Re1–/+) 22.Qc3=+ Kh7 (22...Bh5 23.a5=+) 23.Nd4 Qe7 (23...Qf7=+) 24.f3 (better 24.a5!?=+) 24...e3–/+ 25.Ra2 (25.Be2 Rg8–/+) 25...Rae8 26.Nb3 (26.Be2 Rg8–/+) 26...Ncd7 (26...Qg7 27.Kh1–+) 27.Be2 (27.Qa5–/+) 27...Qf6 (27...Qh4 28.Qa5=+) 28.Qd4 (28.Qa5!?=+) 28...b6–/+ 29.Nd3 (29.a5 Nc5 30.Nc5 bc5–/+) 29...Bd3 (29...Nd3 30.Bd3 Qd4 31.Bg6 Kg6 32.Nd4=+) 30.Bd3=+ Nd3 (30...Kg8 31.Kh1–/+) 31.Qd3 Kh8 (31...Qg6 32.Qe2=) 32.Re2 (32.a5 Ne5 33.Qe2 Rg8=) 32...Rg8=+ 33.Kh1 (33.Qc2 Rg3=+) 33...Rg3 (33...Ne5 34.Qd4=+) 34.Nd4 Re5 (34...Nc5 35.Qc3=+) 35.Ne6 (35.Qc2 Nc5=) 35...Nc5 36.Nc5 bc5 37.Kh2 Qh4 38.Rh1?? (better 38.Kh1=) 38…Rh3 (38...Rh3 39.gh3 Qg3) 0–1. Nemeth,Laszlo – Dekany,Lajos, Matra Cup Gyongyos, 2002.

7.Nc3 Ngf6 8.Bd3 g6 9.Nge2 Bg7 10.Qc2 c6 11.0–0 cd5 12.cd5 Rc8 13.Qa4 Qb6 14.Bb5 Ke7 15.Bd7 Nd7 16.Qb5?? Rc7 17.a4 a6 18.a5?? Qb5–+ 19.Nb5 ab5 20.Nc3 Rhc8 21.Nb5 Rc2 (21...Rc2 22.Na7 Ra8 (22...Rb2?! 23.Nc8 Kf8 24.Rfd1=+) 23.Nc6 bc6 24.dc6 Rb2–+) 0–1. gtate (2020) – bumeyou (2170), net–chess.com, 2006.

7.Bd3 e4 A) 8.Bf1 A1) 8...a5 9.a3 (9.ba5 c6 10.Ne2 Qa5 11.Nbc3 Be7 12.dc6) 9...Ngf6 10.Nh3 ab4 11.ab4 Ra1 12.Ba1; A2) 8...c6 9.Ne2 (9.Nc3 Ne5 10.Nh3 Qb6 11.a3 Nf6 12.Be2; 9.dc6 bc6 10.Nd2 Ne5 11.Bd4 Nf6 12.Nh3; 9.Nh3 Ngf6 10.Ng5 Bg8 11.dc6 bc6 12.a3) 9...Ngf6 10.dc6 bc6 11.Nd4 Qb6 12.b5; A3) 8...Ngf6 9.Ne2 (9.Qa4 a5 10.ba5 Ra6 11.Nd2 Be7 12.Qb4; 9.Be2 c6 10.dc6 bc6 11.a3 d5 12.cd5; 9.Nh3 Be7 10.Be2 a5 11.b5 Nc5 12.0–0) 9...a5 10.b5 Nc5 11.Ng3 g6 12.Bd4; B) 8.Be2 B1) 8...a5 9.a3 (9.b5 Qg5 10.Bf1 Ngf6 11.Nh3 Qh4 12.Be2) 9...ab4 10.ab4 Ra1 11.Ba1 Qg5 12.Bf1; B2) 8...Ngf6 9.Nh3 (9.a3 b5 10.cb5 Nd5 11.Nh3 Qh4 12.Qc1) 9...a5 10.a3 Ne5 11.Nf4 Be7 12.0–0; B3) 8...Qg5 9.Bf1 Ngf6 10.Nh3 Qh4 11.Nc3 c6 12.dc6.

7.Bd3 Ne7 8.Qa4 a6 (8...a5 9.b5=+ (9.Nc3 ab4 10.Qb4 c6 11.Nh3 cd5 12.cd5; 9.Ne2 e4 10.Bc2 c6 11.dc6 Nc6 12.Nd2) 9...c6 10.dc6 Nc5 11.Qd1 bc6 12.Be2; 8...c6 9.dc6 Nc6 10.a3 Qg5 11.g3 Nb6 12.Qc2) 9.Nc3= (9.e4 b5 10.cb5 fe4 11.Be4 Bd5 12.Bd5; 9.Na3 b5 10.cb5 Bd5 11.Bf1 ab5 12.Qb5) 9...c6 (9...a5 10.Nge2= (10.b5 Nc5 11.Qc2 Nd3 12.Qd3) 10...c6 11.0–0 e4 12.Bb1) 10.dc6 bc6 11.a3 (11.Nh3 a5 12.Ng5) 11...Nb6 (11...a5 12.b5=) 12.Qb3=. Fischer,Detlev – Hroch, corr EU–II–768, 1981.

7.Bd3 Ne7 8.Nh3 A) 8...c6 9.Ng5 (9.dc6 Nc6 10.a3 e4 11.Be2 a5 12.Bh5) 9...Bg8 10.Ne6 Be6 11.de6 Nf6 12.Qb3; B) 8...Nb6 9.Ng5 (9.Nd2 e4 10.Be2 c6 11.dc6 Nc6 12.a3; 9.0–0 c6 10.Ng5 e4 11.Be2 Bg8 12.Ne6; 9.a4 a5 10.ba5 Nd7 11.0–0 Nc5 12.Bc3) 9...Bg8 10.Ne6 Be6 11.de6 Nc6 12.b5; C) 8...a5 9.b5 (9.a3 ab4 10.ab4 Ra1 11.Ba1 Nb6 12.0–0) 9...Nc5+= 10.0–0 c6 11.dc6 bc6 12.Be2.

7.Bd3 Qg5 A) 8.g3 A1) 8...e4 9.Be2 Ngf6 10.Nh3 Qh6 11.Nf4 Be7 12.Nc3; A2) 8...Ngf6 9.Nf3 (9.Nc3 e4 10.Be2 0–0–0 11.Qa4 Kb8 12.h4; 9.Na3 e4 10.Be2 c6 11.dc6 bc6 12.Qa4) 9...Qh5 10.Be2 Qh6 11.Qc2 a5 12.ba5; A3) 8...Bh5 9.Qa4 (9.f4 Qg6 10.Be2 Ngf6 11.Bh5 Nh5 12.Nc3; 9.Be2 Be2 10.Ne2 Ngf6 11.Na3 Qg4 12.0–0) 9...e4 10.Be2 Ne7 11.Bd4 c6 12.Nc3; B) 8.Kf1 B1) 8...Be7 9.Nc3 (9.Nd2 Bh5 10.Nh3 Qh6 11.Qc2 e4 12.Be2; 9.Qa4 Ngf6 10.Nf3 Qh5 11.Be2 Qh6 12.Qb5; 9.h4 Qf6 10.h5 a5 11.Qa4 Kd8 12.a3) 9...Bh5 10.Nf3 Qf6 11.Nb5 Kd8 12.Be2; B2) 8...e4 9.Nh3 (9.Be2 Ngf6 10.Nh3 Qh4 11.Nc3 c6 12.dc6) 9...Qh4 10.Be2 Ngf6 11.Nc3 c6 12.dc6; B3) 8...Qg6 9.Nc3 c6 10.e4 f4 11.Nf3 Ne7 12.Kg1; B4) 8...Bh5 9.Qa4 (9.Be2 Be2 10.Qe2 c6 11.Nf3 Qg6 12.Nc3; 9.Nh3 Qh4 10.Qe1 Ngf6 11.f3 Qe1 12.Ke1 e4) 9...Ne7 10.Nd2 c6 11.Ngf3 Qg6 12.dc6; C) 8.Nf3 Qg4 9.Bf1= Ngf6 10.h3 Qg6 11.Qc2 Ne4 12.g4.

7.Bd3 g6 8.e4 fe4 9.Be4 Ngf6 10.Nd2 Bg7 11.Ngf3 0–0 12.0–0 Nh5 13.Qc2 Qe7 14.Rfe1 Rae8 15.Nf1 Bh6 16.Ng3 Nf4 17.c5 (17.Ne2!?+=) 17...b6 (17...Nf6 18.Rad1–/+) 18.c6 Nf6 d5 becomes the focus of attention 19.Rad1 Ng4 (better is 19...N4d5!? 20.b5 Ne4 21.Ne4 Ra8+=) 20.Bc1 Kg7 21.Ne2 Bg8 22.Nf4 Bf4 23.Bf4 Rf4 24.h3 Nh6 25.g3 Rf7 26.Qd2 Ref8 27.Qe3 Nf5 28.Qg5 Nd4 29.Rd4 (better is 29.Qe7!? Nf3 30.Bf3 Re7 31.Be4+=) 29...ed4+= 30.Qe7? (better is 30.Qd2 Qf6 31.Re2+=) 30...Re7–+ 31.Nd4 Bd5! 32.f3 (32.Bd5 Re5 Double attack (32...Re1 Pinning; 32...Re1 Deflection; 32...Re5 Decoy)) 32...Rfe8 (worse is 32...Ba2 33.Ra1 Bc4 34.Ra7–+) 33.Kf2 Be4 (33...Re4?! 34.fe4 Be4 35.b5+=) 34.fe4 Re4 35.Re4 (35.Rd1–+) 35...Re4 36.Nc2 Rc4 37.Ne3 Rc6 0–1. kaasparov (1620) – sali16, internet, 2013.

7.Nf3 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 Be7 11.Nc3 Nh6.

7.Nf3 c6= A) 8.dc6 bc6 9.Nc3 Ngf6 10.Qc2 Be7 11.Qf5 Qb6; B) 8.Be2 Ngf6 (8...Qb6 9.dc6 bc6 10.b5 Ngf6 11.Nc3 Be7) 9.Nc3 Qb6 10.dc6 bc6 11.b5 Be7; C) 8.Nc3 Qb6 (8...Ngf6 9.Ng5 Nd5 10.Nf7 Nc3 11.Qc2 Kf7) 9.a3 Ngf6 10.Ng5 a5 11.Na4 Qa7.

7.Nf3 Be7 8.Nc3 a5 9.a3 Ngf6 10.Be2 0–0 11.0–0.

7.Nf3 Ngf6 8.Nbd2 Be7 9.Bd3?? e4–+ 10.Nd4 ed3 11.Nf5 0–0 12.g4 Ne5 13.g5 Nh5 14.f4 Nd7 15.Ne4 Bg6 16.Neg3 Ng3 17.Ng3 Nb6 18.Qb3 Qe8 19.a4 Bg5! 20.Kd2 Bf6 21.Rhg1 Bb2 22.Rae1 Qa4 (23.Qa4 Na4–+) 0–1. Frantz,JW – Aldrich,Justin, Detroit Amateur North op–B, 1999.

7.Nf3 Ngf6= 8.Ng5 Nb6 9.Nc3 a5 10.ba5 Ra5 11.Bd3.

7.Nf3 Nh6 8.Nc3 Be7 (8...a5 9.a3 Be7 10.Be2 0–0 11.0–0) 9.Be2 0–0 10.0–0 a5 11.a3.

5.d4 e4

6.d5 Bd7 7.Ne2 Nf6 8.Nbc3 Be7 9.Nf4 0–0 10.Be2 c6 11.0–0 cd5 12.Ncd5 Nd5 13.Nd5 Bc6 (13...Nc6 14.b5 Ne5 15.Qd4+/–) 14.Rc1 (14.Qd4 Bf6 15.Nf6 Rf6+–) 14...Bd5 15.Qd5 (15.cd5?! Nd7+=) 15...Kh8 16.Qb7 Nd7 17.a3 Ne5 (17...a5 18.b5+–) 18.Rfd1 Qb6?? (18...Bf6 19.Bd4+–) 19.Qd5 White prepares the advance c5 (better is 19.Qe7 Nf7 20.Rd5+–) 19...Rfd8 (19...Nc6 20.Rc2+–) 20.c5 (better is 20.Qe6 Bf6 21.Qf5+–) 20...Qc6?? (better is 20...dc5 21.Qe5 Bf6 22.Qf5 Bb2 23.bc5 Qf6 24.Qf6 gf6 (24...Bf6?? 25.c6+–) 25.Rd8 Rd8+–) 21.Be5 (better is 21.Qc6 Nc6 22.cd6 Rd6 23.Rd6 Bd6 24.Rc6 Rd8+–) 21...Qd5 22.Bg7! Kg7 23.Rd5 dc5 24.Rd8 Rd8 25.bc5 Rd2?? (better is 25...Rc8!?+/–) 26.Ba6 (better is 26.c6 Bd6 27.c7 Bc7 28.Rc7 Kg6 29.Bf1+–) 26...Ra2? (26...Bd8+–) 27.c6 (27.c6 Bd8 28.c7 Bc7 29.Rc7 Kg6 30.Rc6 Kg7 31.Rc3 Ra1 32.Bf1+–) 1–0. polynesia46 – ultravioleta, internet, 2013.

6.d5 Bf7 7.Ne2 Nf6 8.Nd4 g6 9.Qa4 Qd7 10.Qd7 Nbd7 11.Ne6 Rc8 12.c5 (12.Nf8 Rf8 13.Bd4 b5+=) 12...Be6 13.de6 Ne5 14.cd6 (14.Na3 Nd5 15.Nb5 Nb4 16.Rd1+=) 14...Bd6–/+ 15.Nd2 0–0 (better is 15...Ke7!?–/+) 16.a3= Rfe8 17.Nc4 Nc4 18.Bc4 (worse is 18.Bf6 Nb6–/+) 18...Be7 19.0–0 (better is 19.Rd1+/–) 19...Red8?? (19...c5 20.Rfc1=) 20.Rfd1 (20.Bf6 Kf8 21.Bc3 a6+–) 20...a6?? (20...Kf8 21.Bd4+=) 21.Rac1 (better is 21.Rd8 Rd8 22.Bf6+–) 21...Kf8+= 22.Be5 Ne8 (better is 22...Rd1!? 23.Rd1 b5=) 23.Rd7+/– Bd6?? (better is 23...c5 24.b5 ab5 25.Bb5 b6+/–) 24.Bd6 (better is 24.Rh7 Ng7 25.Bf6 Ne6 26.Be6 Ke8+–) 24...Nd6 25.e7 Ke8 1–0. kaasparov – ultravioleta, internet, 2013.

6.d5 Bf7 7.Ne2 Nf6 8.Ng3 g6 9.Nd2 Bg7= 10.Nb3 0–0 11.c5? Nbd7 12.cd6 cd6–/+ 13.Bc4 Nb6 14.Qe2 Rc8–+ 15.Nd2 Nc4 16.Nc4 Bd5 17.Na5 b6 18.Nb3 Bc4 19.Qd2 Bd3 20.Ne2?? Rc2 0–1. gtate (1870) – jongosbrongkos (2000), net–chess.com, 2003.

6.d5 Bf7 7.g4 Bg6 (7...fg4 8.Nd2 Nf6 (8...Nd7 9.Ne4 Ngf6 10.Ng5 Qe7 11.Ne2) 9.h3= g3 10.fg3 Nbd7 11.Ne2) 8.h4 (8.gf5 Bf5 9.Ne2 (9.Bh3 Qg5 10.Bf5 Qf5 11.Ne2) 9...Nf6+– (9...Qe7 10.Nd2 Nf6 11.Bf6) 10.Nd2 Be7 11.Ng3) 8...fg4+= (8...Nd7 9.h5 Bf7 10.h6 Qg5 11.hg7) 9.Qg4 Nf6 (9...Qd7 10.Qd1 Qe7 (10...Nh6 11.Bh3) 11.Nc3+= 0.42/9 (11.Nd2+=)) 10.Qe6+= Qe7 (10...Be7 11.Bf6) 11.Qc8 Qd8 12.Qb7 Nbd7 13.Qc6 (13.Na3 Rb8 14.Qa7 Ra8=) 13...Be7 (13...Rb8 14.Qa4 Be7 15.Ne2=) 14.Bh3 (14.Ne2!? 0–0 15.Nf4=) 14...0–0=+ 15.h5 (15.Be6 Kh8 16.Ne2 Rb8=+) 15...Be8–/+ 16.Be6 (16.Qa6 Qb8 17.Be6 Kh8 18.Bd7 Bd7=) 16...Kh8 17.Qa6 (17.Qb7 a5 18.h6 ab4 19.hg7 Kg7 20.Bd7 Bd7=) 17...Nh5 18.Nd2 Bf6 19.Bd7 Bb2 20.Be8 Qe8 (20...Re8? 21.Rb1 Qf6 22.Rh5+–) 21.Rb1 Bc3 22.Nh3 (22.Ne2 Bd2 23.Kd2 Rf2 24.Rbf1 Re2 25.Ke2 Ng3 26.Kd2 Nh1 27.Rh1–+) 22...Qg6–+ 23.Kd1 (23.c5 Rad8 24.Rb3 Bd2 25.Kd2 Rf5–+) 23...Qg4 24.Kc2 Bd2 25.Kd2 Rf3 26.Rbg1 (26.Qb7 Raf8 27.Qc7 Rh3 28.Rh3 Qh3–+) 26...Qf5 27.Rg5 Rf2 28.Ke1 (28.Nf2 Qf2 (worse 28...Qg5 29.Rh5 Qh5 30.Ne4–+) 29.Kd1 Qf3 30.Kc2 Qh1–+) 28...Qf3 29.Nf2 Qe3 30.Kd1 Qg5 31.Ne4 (31.Re1 Ng3 32.Qa3–+) 31…Qg4 (31...Qg4 32.Kc1 Qe4–+) 0–1. Ioannides,Milton (2075) – Campbell,Mark C (2005), BCF–chT3, 2008.

5.Be2 Nf6

6.Nf3 Be7 7.a3 0–0 8.d4 e4 9.Nfd2 d5 10.Nc3 c6 11.b5 Kh8 12.Qb3 Qd7 13.c5 Qc8 14.bc6 bc6 15.Qa4 Nbd7 16.Ba6 Qc7 17.Ne2 Rfb8 18.Rb1 Nh5 19.Bc3 Rb1–/+ 20.Nb1 Rb8 21.Kd2 Nf8 22.Ba5=+ Qd7 23.Nbc3 Ng6 24.g3 ½–½. Schuenemann,Moritz – Trella,Thomas, GER–ch U12 Oberhof, 1999.

6.Bh5 g6 (6...Nh5 7.Qh5 g6 8.Qe2=+) 7.Be2= Nbd7 8.Nf3 Bh6 9.0–0 g5 (9...0–0 10.Qc2=) 10.d3 (10.d4 g4 11.Nh4 Ne4+=) 10...Qe7 11.Qa4 0–0 12.d4 e4 13.Nfd2 d5 14.cd5 Bd5 (14...Nd5 15.b5 N7b6 16.Qa5=) 15.Nc3 Nb6 16.Nd5 (16.Qa5!?+=) 16...Nfd5= (16...Na4?? 17.Ne7 Kf7 18.Nf5 Nb2 19.Nh6 Kg6 20.Ng4 Ng4 21.Bg4+–) 17.Qb3 c6 Black prepares the advance f4 (17...Qb4 18.Qb4 Nb4 19.Ba3=) 18.Nc4 (18.Ba3 Qe6+=) 18...Kh8 (18...Qb4!? 19.Qb4 Nb4=+) 19.a3 (19.b5 Qe6+–) 19...f4+= 20.ef4 (20.b5 Bg7+=) 20...gf4= 21.Ne5 Bg7 22.Qh3 Be5 (22...Qg5 23.f3 Ne3 24.fe4=+) 23.de5+= Qg5 (better 23...Qg7!? 24.Qg4 Qg4 25.Bg4 Nc4+=) 24.e6+– Kg8 25.Bh5 f3 26.g3 Nf6? (26...Qf5!? 27.Qh4 Na4+–) 27.Bf7+– Kg7 (27...Kh8 28.Qh5 Qg7 29.Qf5+–) 28.Rad1 (28.Bc1 Qe5 29.Bf4+–) 28...Nbd5+– 29.Rd5 (better 29.Rfe1!? Nf4 30.Qf1 Ne2 31.Kh1 Rf7 32.ef7 Kf7 33.Bf6 Qf6 34.Rd7 Kg8 35.Qh3+–) 29...cd5= 30.Rc1 (30.Bc1 Qe5 31.Bh6 Kh8 32.Bf4+– (32.Bf8?! Rf8 33.Qh6 Rc8=)) 30…e3 (30...Rf7 31.ef7 Rf8 32.Qe6 Rf7 33.h4+=). GuestKJQG – GuestQLSH, freechess.org, 2017.

5.Nf3 a5

6.a3 ab4 7.ab4 Ra1 8.Ba1 Nc6 (8...Nf6 9.d4=) 9.Qa4 (9.b5 Na5+=) 9...Bd7= 10.b5 Nce7 11.Be2 Nf6 12.d4 e4 13.Nfd2 g5 (13...d5 14.Nc3=) 14.g3 (14.0–0!?+=) 14...Bg7 15.Nc3 0–0 16.0–0 Qa8 17.Qa8 Ra8 18.Bb2 c6 19.Ra1 (19.bc6 bc6 20.f3 d5=) 19...Ra1 20.Ba1 d5 21.c5 (21.b6 f4=+) 21...Kf7 22.b6 (22.f3 cb5 23.Bb5 g4=+) 22...Ng6 Black prepares the advance f4 (22...f4 23.gf4 gf4 24.Nb3=+) 23.Nb3 (23.f4 ef3 24.Nf3 g4=) 23...Bc8 24.Bf1 f4 25.Bb2 fe3 26.fe3 Ne7 27.Bc1 Ng6 28.Kg2 (28.Kf2 Ng4 29.Kg2 Ke7=) 28...Nd7 29.Na4 h5 30.h3 Bh6 31.Be2 ½–½. kovacic (2240) – bancario (2185), ChessWorld.net, 2013.

6.b5 Nd7 7.d4 e4 8.Nfd2 Ngf6 9.Be2 Be7 10.d5+= Bf7 11.Nb3 0–0 12.Nd4+= g6 13.Nc3 Nc5 14.Na4 Na4 15.Qa4 Qd7 16.0–0 b6 17.Qc2 Ne8 18.f3 ef3 19.Bf3 Bf6 20.Ne6!+– Be6 21.de6 Qe6?? 22.Bd5 (22.Bd5 Ng7 23.Bf6 Rf6 24.e4+–) 1–0. b4_player – floryncd, gamecolony.com, 2007.

5.Nf3 Nd7

6.a4 a5 A) 7.b5 A1) 7...Qf6 8.d4 (8.Qc2) 8...e4 9.Nfd2 Ne7 10.Nc3 d5 11.Rc1 Qg5 12.Ne2+=; A2) 7...Nb6 8.Na3 (8.d3 Be7 9.Be2 Nh6 10.0–0 0–0 11.Bc3 Bf6 12.Nbd2=; 8.Qc2 Nf6 9.Be2 Be7 10.d4 e4 11.Ng5 Bc8 12.0–0+=) 8...Nf6 9.d4 e4 10.Ng5 Bc8 11.Be2 Be7 12.0–0+=; B) 7.Qb3 ab4 8.d4 e4 9.Nfd2 c6 10.Qb4 b6 11.Be2 Ngf6 12.Qb3=; C) 7.ba5 Bf7 (7...Be7 8.d4 Bf6 9.Be2 e4 10.Nfd2 Ra5 11.g4 g6 12.gf5+=; 7...Nh6 8.d4 e4 9.d5 Bf7 10.Nd4 Ra5 11.Be2 Qg5 12.0–0+=) 8.Be2 (8.Bc3 e4 9.Nd4 Nh6 10.d3 Nc5 11.de4 fe4 12.Nb3+=; 8.d4 e4 9.Nfd2 Ra5 10.d5 Qg5 11.Nc3 Bh5 12.Qc2+=) 8...e4 9.Nd4 Ne7 10.Bc3 Nc5 11.d3 d5 12.de4+=.

6.a4 Be7 7.Qc2 Bf6 (7...Rb8 8.Be2 (8.Nc3 a5 9.ba5 c6 10.Be2 Qa5 11.0–0 Nh6 12.d4=) 8...Nh6 9.0–0 0–0 10.d4 e4 11.Nfd2 c6 12.b5=; 7...Nh6 8.Be2 0–0 9.0–0 c6 10.a5 Rb8 11.Nc3 b6 12.ab6=) 8.Be2 (8.d4 c6 9.Be2 Ne7 10.0–0 a5 11.de5 de5 12.Rd1=) 8...Qe7 (8...c5 9.bc5 dc5 10.d4 e4 11.Nfd2 cd4 12.ed4=) 9.Nc3 (9.d4 e4 10.Nfd2 a5 11.b5 Nh6 12.0–0+=) 9...c6 (9...Nb6 10.e4 Nh6 11.Nd5 Bd5 12.ed5=) 10.0–0 e4 (10...Qf7 11.d3 Ne7 12.a5=) 11.Nd4 Bd4 12.ed4 Ngf6 (12...d5 13.c5=) 13.f3 d5 14.cd5 (14.fe4 fe4 15.b5 Rc8+=) 14...cd5= 15.b5 Nb6 (15...Qb4!?=) 16.Ba3. Neumann – Iden, corr, 1976.

6.a4 Be7 7.d4 A) 7...d5 8.cd5 Bd5 9.de5 Bb4 10.Bc3 Bc3 11.Nc3 Be4 12.Nd4+–; B) 7...Bf7 8.de5 (8.a5 e4 9.Nfd2 Ngf6 10.Be2 c5 11.b5 d5 12.0–0=; 8.d5 a5 9.b5 Nc5 10.Be2 Nf6 11.0–0 0–0 12.Ne1=) 8...de5 9.Qb3 Bd6 10.Bc3 Qf6 11.Qc2 0–0–0 12.c5+=; C) 7...Nh6 8.a5 (8.d5 Bf7 9.Be2 a5 10.b5 0–0 11.Nbd2 Bh5 12.0–0=; 8.Be2 d5 9.cd5 Bd5 10.de5 Bb4 11.Bc3 Bf3 12.Bf3=) 8...d5 9.cd5 Bd5 10.de5 Bb4 11.Bc3 Bc3 12.Nc3=.

6.a4 Qf6 A) 7.Nc3 a5 (7...Nb6 8.Qb3 0–0–0 9.d4 Nd7 10.Nd5 Bd5 11.cd5 e4 12.Rc1+=; 7...c5 8.Nb5 Kd8 9.bc5 dc5 10.Qb3 a6 11.Na3 Rb8 12.d4+=) 8.ba5 c6 9.d4 Ra5 10.Qb3 Ra7 11.Be2 e4 12.Nd2=; B) 7.Qb3 a5 8.ba5 (8.d4 ab4 9.Qb4 Ra7 10.d5 Bf7 11.a5 Ne7 12.Nc3+=) 8...Nc5 9.Qc2 Qe7 10.d4 ed4 11.Nd4 f4 12.ef4+=.

6.a4 Ngf6 7.d4 A) 7...Bf7 8.Be2 e4 9.Ng5 d5 10.c5 Be7 11.Nf7 Kf7 12.0–0+=; B) 7...Bg8 8.a5 (8.Nc3 e4 9.Nd2 d5 10.c5 Be6 11.Be2 Be7 12.a5=) 8...e4 9.Nfd2 d5 10.c5 Be6 11.a6 b6 12.c6+=; C) 7...c6 8.Be2 d5 9.c5 e4 10.Ng5 Bg8 11.b5 Rc8 12.0–0+=.

6.Nc3 a5 7.a3 Nh6 8.Be2 Be7 9.Nd5 0–0 10.0–0.

6.Nc3 Nb6 7.Qb3= (7.d3 a5 8.b5 Be7 9.Be2 Nh6 10.c5 Nd5 11.Nd5 Bd5=; 7.c5 dc5 8.bc5 Bc5 9.Ne5 Nf6 10.Bb5 c6 11.Nc6 bc6=) 7...a5 (7...Nf6 8.Be2 Ne4 9.Nd5 c6 10.Nb6 ab6 11.d3 Nf6+=; 7...e4 8.Nd4 Bd7 9.Be2 c5 10.Nc2 Nf6 11.a4 a5+=) 8.a3 Qe7 9.d4 ab4 10.ab4 Ra1 11.Ba1 Nf6+=.

6.Nc3 c5 7.bc5 dc5 8.d4 e4 9.d5 Bf7 10.Nd2 Ngf6 11.Be2 Bd6+=.

6.Nc3 g6 7.Qc2 (7.d4 Bf7 (7...a5 8.d5 Bf7 9.a3 Ngf6 10.Be2 Bg7 11.0–0 0–0+=; 7...Bg7+= 8.d5 Bf7 9.Be2 Ngf6 10.0–0 a5 11.a3 0–0+=) 8.Be2 e4 9.Nd2 d5 10.a3 Ngf6 11.0–0 Bg7+=; 7.Be2 Bg7 (7...Nb6 8.d3 Bg7 9.0–0 a5 10.a3 Nf6 11.Ng5 Bg8+=; 7...a5 8.b5 Nb6 9.c5 Nc4 10.Qb3 d5 11.Nd5 Nb2+–) 8.d4 e4 9.Nd2 Ngf6 10.0–0 0–0 11.d5 Bf7=) 7...Bg7 (7...Nb6 8.d4 Bc4 9.de5 d5 10.e6 Nf6 11.Bc4 Nc4=; 7...a5 8.b5 Bg7 9.d4 Ne7 10.Be2 h6 11.0–0 0–0+=) 8.Be2 (8.d4 e4 9.Nd2 Ngf6 10.Be2 a5 11.ba5 Ra5=) 8...Nh6 (8...Nb6 9.d4 Bc4 10.de5 Ne7 11.Nb5 Bb5+–) 9.0–0 (9.d4 0–0 10.0–0 c6 11.d5 cd5+=) 9...0–0 10.Rac1 (10.d4 a5 11.a3 c6+=) 10...c6 (10...g5 11.d3 a5=) 11.a4 (11.d4 e4=) 11...g5 12.e4 (12.d3 g4 13.Nd2 f4=) 12...g4=+ 13.Ne1 f4 (13...Qb6 14.Ba3=+) 14.d3 (14.a5 c5 15.Ba3 Qg5=) 14...Qg5 15.Qd2 Qh5 16.Bd1 (16.Qd1 Nf7 17.Nc2 Ng5–+) 16...Rf6 17.d4 (17.Ne2 Nf7 18.d4 Rh6–+) 17...Bc4 (17...Nb6 18.Qc2 Nc4 19.d5–/+) 18.Ne2 Be6 19.de5 de5 20.Rc3 Nf7 21.Nc1 (21.Bb3 Rh6 22.h3 Rd8 23.Be6 Re6 24.hg4 Qg4–/+) 21...Rh6 22.Rh3 Qg6 23.Rh6 Bh6 24.Qd3 (24.f3 Rd8–+) 24...Rd8 25.Bb3 Nc5! 26.Qc2 (26.bc5 Rd3) 26...Bb3 27.Nb3 Na4 28.Bc1 Qd6 29.Nc5 (29.Bd2 a6–+) 29...Nc5 30.bc5 Qd4 31.Bb2 Qb4 32.f3 (32.Bc3 Qc5 33.Nd3–+) 32...Rd2 33.Bc3 (33.Qc3 Qb2 34.Qb2 Rb2 35.Rf2–+) 33…Qc5 (33...Qc5 34.Kh1 Rc2 35.Nc2 Qc3–+) 0–1. Schoppmeyer,Herbert – Ophoff,Rigobert, OWL–ch Bad Oeynhausen, 1964.

6.Nc3 Nh6 7.Be2 a5 8.b5 Be7 9.0–0 0–0 10.h3.

6.d3 g6 (6...Ngf6 7.d4= (7.Ng5 Bg8 8.Nc3 h6 9.Nf3 a5 10.a3) 7...a5 8.b5 Be7 9.Nc3 h6 10.Qc2; 6...Be7 7.Nc3 a5 (7...Nh6 8.Be2 0–0 9.0–0 c6 10.Qd2) 8.b5 Bf6 9.Be2 Ne7 10.0–0; 6...Nh6 7.Be2 Be7 (7...c6 8.Nc3 Be7 9.Qc2 0–0 10.0–0) 8.0–0 c6 9.Nc3 0–0 10.Qc2) 7.Qc2 (7.d4 d5= (7...Ngf6 8.Ng5 Bf7 9.d5 Bh6 10.Nf7) 8.de5 dc4 9.a3 a5 10.ba5; 7.Qa4 Bh6 8.Nc3 Ngf6 9.Be2 a5 10.h4) 7...Bg7 (7...a5 8.b5= (8.ba5 Bh6 9.h4 Ngf6 10.Nbd2) 8...Bh6 9.Nc3 Ngf6 10.Be2; 7...Bh6 8.Nc3 a5 9.b5 Ngf6 10.Be2) 8.a4 (8.Be2 a5= 9.b5 Ngf6 10.Ng5; 8.Nbd2 a5 9.ba5 Nh6 10.Be2) 8...h6 (8...a5 9.b5= (9.ba5 Ra5 10.Nc3) 9...Ngf6 10.Ng5) 9.g3 (9.Be2 a5= 10.b5; 9.Nc3 Ngf6 10.Be2) 9...g5 (9...a5 10.b5=; 9...Ngf6 10.Nc3) 10.Nbd2 (10.d4 Ne7=) 10...Ne7 (10...g4 11.Nh4 Ne7 12.Bg2=) 11.Bg2 (11.h3 a5=+) 11...0–0 (11...Nc6 12.Bc3=+) 12.0–0= Ng6 (12...a5 13.b5=) 13.Rac1 (13.a5 c6=) 13...c6 14.Ba3 (14.b5 g4 15.Ne1 Qc7=) 14...h5 (14...g4 15.Ne1=) 15.Nb3 (15.b5 g4 16.Ne1 Qc7=) 15...h4 (15...g4 16.Nfd2=) 16.Qd2 (16.b5 h3 17.Bh1 c5=) 16...g4 (16...h3 17.Bh1= (worse 17.Bh3 g4–/+)) 17.Nh4 Nh4 18.gh4 Qh4 19.f4 (19.Na5 Rfb8=) 19...Kf7 (19...ef4 20.ef4 Kf7 21.Rfe1=+) 20.Qf2 (20.b5 Rh8 21.bc6 Qh2 22.Kf2 ef4 23.ef4 g3 24.Ke1 bc6 25.Bd6 Rad8=) 20...Rh8 The backward pawn on h2 becomes a target (20...Qf2 21.Rf2 ef4 22.ef4=+ (worse 22.Rf4 Bh6–+)) 21.Qh4 Rh4 22.Rf2 (22.Na5 ef4 23.Rf4 Be5=+) 22...Rah8 (22...ef4 23.ef4 Rah8 24.b5 Rh2 25.Bd6=) 23.Bf1 (23.e4 ef4 (worse 23...Rh2 24.ef5 Bf5 25.fe5=+) 24.ef5 Bf5 25.Rf4 Kg6–+) 23...d5 24.Na5 (better 24.e4!? R8h5 25.cd5 cd5 26.Nc5 ef4 27.Ne6 Ke6 28.ed5 Kd5 29.Rf4–+) 24...ef4–+ 25.Nb7 (25.cd5 cd5 26.Rf4 Be5–+) 25...fe3 26.Nd6 Kg6 27.Re2 f4 28.Rcc2 (28.cd5 Bd5 29.Rcc2 Ne5–+) 28...Ne5 (28...d4 29.b5 cb5 30.ab5–+) 29.Bb2 (29.b5 Nf3 30.Kh1 dc4 31.dc4 Nd4–+) 29...Nf3 (29...Nd3 30.Re3 fe3 31.Bd3 Kh6 32.cd5 cd5 33.Rc6 Bb2 34.Nf7 Kg7 35.Nh8–+) 30.Kh1 Bb2 31.Rb2 Nd2 (31...Nd4!? 32.Kg1–+) 32.Rbd2 (32.Kg1 Kg5 33.Rbd2 ed2 34.Rd2 g3–+) 32...ed2 33.Re6 (33.Rd2 g3 34.Kg1–+) 33...Kg5 34.d4 (34.Nf7 Kf5 35.Nh8–+) 0–1. Poschmann,Hans – Minzner,Carl, Labor Day Festival op, 1993.

6.d4= d5!? 7.Qa4 e4 =.

6.d4 d5 7.Nc3 dc4 8.d5 Bf7 9.Bc4 Ngf6 10.a3.

6.d4 d5 7.cd5 Bd5= (7...Bb4? 8.Bc3 Bc3 9.Nc3+–) 8.Ne5 Ne5 9.de5 Bb4 10.Bc3.

6.d4= e4 7.d5+= Bf7 8.Nd4 Nh6 (8...Ne5 9.Nf5 Qd7) 9.Qa4 (9.Ne6 Be6) 9...c6 (better 9...Be7!?+=; 9...Qf6+–) 10.dc6+– Nb6 11.Qc2 bc6 12.Nc6 Qc7 13.b5 Be6 14.Nd2 Kf7 15.Be2 Rg8 (15...Be7 16.Ne7 Qe7 17.Bh5 Kg8 18.0–0+–) 16.0–0 Be7 17.f3 ef3 18.Bf3 Rac8 19.e4 (19.Bh5 g6 20.Bf3 Ke8+–) 19...Bf6 (19...Bg5 20.Rae1 Bd2 21.Bh5 Kf8 22.Qd2 Nc4 23.ef5+–) 20.Bf6 gf6 (20...Kf6 21.ef5 Nf5 22.g4 Nc4 23.Nc4+– (worse 23.gf5 Nd2 24.Qd2 Bf5+–)) 21.Bh5 (21.Rae1 Kg7+–) 21...Kf8 22.ef5 Qg7 Threatening mate... how? 23.g3 Bd7 24.Rae1 (24.Na7!? Rc5+–) 24...Bc6 25.bc6 Ng4 (25...Qg5 26.Qe4 Rc7 27.Qe8 Kg7 28.Qe2 Nf5 29.Ne4 Qe3 30.Qe3 Ne3 31.Re3 Nc4 32.Rb3+–) 26.Qd3 The mate threat is Qxd6 26...Qc7 27.Bg4 Rg4 28.Qf3 (28.Re6 Kg7 29.Qe2 Rg3 30.hg3 Qc6 31.Re7 Kf8 32.Qe6 Qe8 33.Qf6 Qf7 34.Qf7) 28...Rg7 29.Re6 Rf7 30.c5 (30.Qa3 Rd8+–) 30...dc5 31.Qa3 Rd8 32.Qc5 Kg7 33.Ne4 Rd5 34.Qc3 Na4 35.Qb4 (better 35.Qf3 Rd4 36.Qe3+–) 35...Nb6 36.Nf6! Rf6 A deflection (36...Rd8 37.Ne8 Re8 38.Qd4 Kg8 39.Re8 Rf8 40.Rf8 Kf8 41.Qh8 Ke7 42.Re1 Kd6 43.Qe5 Kc6 44.Rc1 Kb7 45.Rc7 Ka6 46.Qe2 Ka5 47.Rc5 Kb4 48.Qb5 Ka3 49.Qb3) 37.Re7 (37.Re7 Qe7 38.Qe7 Rf7 39.f6 Kg8 40.Qe8 Rf8 41.f7 Kg7 42.Qe7+–) 1–0. Lalic,Susan K (2270) – Milligan Scott,Helen (2035), BCF–ch, 1990.

6.d4 Be7 7.Bd3 Nh6 8.e4 fe4 9.Be4 0–0 10.Nbd2.

6.d4 Nh6 7.Nc3 Be7 8.Be2 0–0 9.0–0 a5 10.b5.

6.Be2 Nb6 A) 7.Na3 A1) 7...Qe7 8.Rc1 (8.d4 e4 9.Nd2 c6 10.Rb1 Nf6 11.0–0 Qf7 12.Qc2=; 8.0–0 Nf6 9.d4 e4 10.Nd2 c6 11.Rc1 Qd8 12.f3=) 8...Nf6 9.0–0 e4 10.Nd4 Bd7 11.Nab5 Qd8 12.d3+=; A2) 7...Nh6 8.0–0 a5 9.b5 Nf7 10.d4 Qf6 11.Qc2 Be7 12.c5+=; A3) 7...Be7 8.0–0 (8.d4 e4 9.d5 ef3 10.Bf3 Bf7 11.Bg7 Bf6 12.Bh8=) 8...Nf6 9.d4 e4 10.Nd2 c6 11.f3 0–0 12.Qc2=; B) 7.Qc2 Be7 8.d4 e4 9.d5 ef3 10.de6 fe2 11.Bg7 Bf6 12.Bh8–/+; C) 7.d3 C1) 7...Nf6 8.Nc3 (8.a3 Be7 9.0–0 0–0 10.Nc3 Nfd7 11.d4 e4 12.Nd2=; 8.0–0 Be7 9.Nc3 Nfd7 10.Nd2 a5 11.ba5 Ra5 12.Bh5=) 8...Nfd7 9.Nd2 Qf6 10.0–0 Be7 11.Bh5 g6 12.Bf3+=; C2) 7...Be7 8.Nbd2 (8.0–0 Nf6 9.Ng5 Bd7 10.a4 a5 11.c5 Nbd5 12.b5=; 8.Qc2 a5 9.b5 Nf6 10.Ng5 Bc8 11.0–0 0–0 12.d4=) 8...a5 9.b5 a4 10.a3 Nf6 11.0–0 0–0 12.Rc1=; D) 7.Qb3 Nh6 (7...a5 8.ba5 Ra5 9.0–0 Be7 10.d4 e4 11.d5 ef3 12.Bf3+=; 7...c6 8.0–0 Be7 9.a4 a5 10.ba5 Ra5 11.Rd1 Qc7 12.d4+=) 8.d4 e4 9.Nfd2 d5 10.c5 Nd7 11.Nc3 Nf6 12.Qa4+=.

6.Be2 c6 7.0–0 g5 (7...Qf6 8.Nc3 Nb6 9.d3 g5 10.a4 g4 11.Nd2 Bg7 12.a5+=; 7...Be7 8.d4 Ngf6 9.Nc3 e4 10.Ng5 Bg8 11.d5 Ne5 12.f4+=; 7...Qe7 8.d4 (8.Nc3 e4 9.Nd4 Ne5 10.Qb3 Nf6 11.a4 Rd8 12.Rfd1+=) 8...e4 9.Nfd2 Ngf6 10.Nc3 Nb6 11.Qb3 Qf7 12.a4+=) 8.d4 g4 9.Ne1 Ngf6 (9...Bg7 10.d5 cd5 11.cd5 Bf7 12.Nc3=) 10.de5 (10.Nd2 Qc7 (10...Bg7+= 11.Nd3 Qe7 12.c5+=) 11.Nd3 Rg8 12.a4+=) 10...de5= 11.Nd3 (11.c5 Qc7 (11...a5 12.a3 ab4 13.ab4 Ra1 14.Ba1 Bg7 15.Nd2) 12.Qa4= a5 13.Nd3 0–0–0 14.a3 Bh6 15.Rd1) 11...Qc7 12.Qc2 (12.Nd2= 0–0–0 13.a4 Bf7 14.Qc2 e4 15.Nc5) 12...Be7 (12...0–0–0 13.Rd1 h5 14.Nd2 h4 15.f4; 12...Bh6 13.Nd2 0–0–0 14.Rad1 Kb8 15.Nb3) 13.Qc3 (13.Nd2 0–0–0 14.a4 h5 15.a5) 13...Ne4 (13...0–0–0 14.Rd1 Ne4 15.Qc2) 14.Qc2 Rg8 (14...0–0–0 15.Rd1) 15.Nc3 (15.Rd1=) 15...Ng5 16.c5 0–0–0 17.b5 f4 18.bc6 Qc6 19.ef4 Nh3 20.Kh1 Nf4 (worse 20...ef4 21.Nb4 Qc5 22.gh3+–) 21.Nf4 ef4 22.f3 g3 (worse 22...Nc5 23.Nb5 Qb6 24.fg4+=) 23.Nb5 Bc5 24.Rfc1 Qd5 (24...a6 25.Na7 Ba7 26.Qc6 bc6 27.Rc6 Kb7 28.Re6+=) 25.Bd4 Qh5 26.Qc5 (26.Na7 Kb8 27.h3 Bh3 (27...Bd4?! 28.Nc6 bc6 29.Qc6–/+; 27...Ba7 28.Qc7 Ka8 29.Rab1+=) 28.Nc6 Kc7 29.Qc5 A) 29...Qc5? 30.Nd8 (30.Bc5?! bc6 31.gh3 Nc5 32.Rc5 Rd2+=) 30...Qc1 31.Rc1 Kd8 32.gh3+–; B) 29...Nc5 30.Nd8 Bg2 31.Kg2 Qh2 32.Kf1 Qh1 33.Bg1 g2 34.Ke1 Qg1 35.Kd2 Qe3 36.Kc2 Qe2 37.Kc3 Rd8 38.Rab1 Qd2 39.Kc4 Qd4 40.Kb5 Qa4 41.Kc5 g1B 42.Rg1 Qd4 43.Kb5 Rd5; C) 29...Bg2 30.Kg2 C1) 30...Qc5 31.Nd8 (31.Bc5?! bc6 32.Bb4 Nb6+=; 31.Rc5?! bc6 32.Rh5 Rge8+–) 31...Qc1 32.Ne6 Kd6 33.Rc1+–; C2) 30...Nc5 31.Rh1 Qe8 32.Rae1 Kc6 33.Rh6 Rg6 34.Bb5 Kb5 35.Re8 Re8 36.a4 Na4 37.Rh5 Kc4 38.Bg1–+; C3) 30...Qh2 31.Kf1 Qh1 32.Bg1 g2 33.Ke1 Nc5 34.Nd8 Qg1 (34...Kd8?! 35.Kd2–+) 35.Kd2 Qe3 36.Kc2 Rd8 37.Kb1 Qe2 38.Rc5 Kb8 39.Rc1 Rc8 40.Rc8 Kc8 41.Kc1 g1Q) 26...Nc5 27.Rc5 Qc5 28.Bc5 Rd2 29.Rc1 Kd8 (29...Re2?? 30.Be7 Bc4 31.Rc4 Kd7 32.Rc7 Ke6 33.Nd4 Ke5 34.Ne2 gh2 35.Rb7+–; 29...Ra2?? 30.Be7 Bc4 31.Rc4 Kd7 32.Rc7 Ke6 33.Bc4 Kf5 34.Ba2+–) 30.Nd4 Ba2 31.Ba7 Rg6 32.hg3 fg3 (worse 32...Rg3 33.Bb6 Ke8 34.Bb5 Kf7 35.Rc7 Kg8 36.Rc8 Kf7 37.Ne2+–) 33.Bf1 h5 34.Nf5 h4 (34...Rd5 35.Ne3 Rd2 36.Bb8+=) 35.Be3 (worse 35.Nh4 Rh6–/+) 35...Rd5 36.Rc5 (36.Nh4!? Rh5 37.Rd1 Kc7 38.Rd4+=) 36...Rd1= 37.Rc1 Rd5 38.Rc5 ½–½. Sternik,Ryszard – Pelc,J, corr Poland, 1986.

6.Be2 c6 7.Nc3 A) 7...c5 8.bc5 dc5 9.d4 cd4 10.ed4 e4 11.Nd2 Ngf6 12.0–0+=; B) 7...Be7 8.0–0 (8.d4 Nb6 9.d5 Bf7 10.0–0 Nf6 11.dc6 bc6 12.Qb3=) 8...Qb6 9.a3 Nh6 10.d4 a5 11.b5 0–0 12.Rb1+=; C) 7...Nb6 8.Qb3 (8.d3 Be7 9.a4 a5 10.b5 Nh6 11.Rc1 0–0 12.0–0=) 8...Be7 9.0–0 Nf6 10.d4 e4 11.Ng5 Bg8 12.Rfd1=.

6.Be2 Qe7 7.0–0 c6 (7...Nb6 8.Qc2 Nf6 9.Rc1 Bd7 10.c5 Na4 11.Ba3 Rc8 12.Qd1+–; 7...0–0–0 8.d4 e4 9.Nfd2 d5 10.c5 Qh4 11.c6 Nb6 12.cb7+=) 8.Nc3 e4 9.Nd4 Ne5 10.Qb3 Nf6 11.Rfd1 Nfd7 12.Ne6+=.

6.Be2 Be7 A) 7.0–0 A1) 7...a5 8.a3 (8.b5 Bf6 9.d4 Ne7 10.Nc3 0–0 11.Rb1 e4 12.Nd2+=) 8...ab4 9.ab4 Ra1 10.Ba1 Nb6 11.d4 Bc4 12.Bc4+=; A2) 7...Nb6 8.c5 (8.d3 Nf6 9.Ng5 Bd7 10.a4 a5 11.c5 Nbd5 12.b5=; 8.Qb3) 8...Nd5 9.cd6 cd6 10.Qa4 Kf7 11.Bc4 Kg6 12.Qb3+=; A3) 7...Bf6 8.a3 (8.Nc3 a5 9.b5 Nb6 10.d3 a4 11.Nd2 Ne7 12.a3=; 8.d4 Ne7 9.d5 Bf7 10.Nc3 0–0 11.a3 Nb6 12.Qc2=) 8...Ne7 9.d4 e4 10.Nfd2 d5 11.Nc3 0–0 12.Qb3=; B) 7.d4 a5 8.a3 (8.b5 Bf6 9.0–0 e4 10.Nfd2 Ne7 11.Bh5 g6 12.Be2+=) 8...Ngf6 9.0–0 ab4 10.ab4 Ra1 11.Ba1 0–0 12.Ng5+=.

6.Be2 Qf6 A) 7.Nc3 A1) 7...Nb6 8.c5 Nc4 9.Bc4 Bc4 10.Qa4 Kd8 11.c6 b6 12.b5+=; A2) 7...a5 8.ba5 (8.Qa4 c6 9.ba5 Qd8 10.Qb3 Be7 11.d4 Qa5 12.0–0=) 8...Ra5 9.0–0 Nb6 10.Qb3 Qe7 11.a4 Nf6 12.Qb4+=; A3) 7...0–0–0 8.d4 g5 9.d5 Bf7 10.Qa4 Kb8 11.Qa5 Rc8 12.Nb5+=; B) 7.0–0 0–0–0 8.Nc3 (8.d4 e4 9.Nfd2 Ne7 10.Nc3 d5 11.Qb3 dc4 12.Nc4=; 8.Qc2) 8...Nb6 9.Qb3 Ne7 10.a4 Qg6 11.a5 Na8 12.Rfd1+=.

6.Be2 g6 7.d4 Bg7 8.0–0 Qe7 9.Nc3 g5 (better 9...Nb6!? 10.d5 (10.c5 Nc4 11.Bc1 e4 12.Qa4 Kf7 13.Nd2 Nd2) 10...Bd7+= (10...Bf7 11.e4 0–0–0 12.Qc2 fe4 13.Ne4 Nf6) 11.a4 a5 12.ba5 Ra5 13.Nb5 Bb5; 9...e4 10.Nd2 Nh6 11.Nb3 0–0 12.Qd2 Ng4 13.h3 Ngf6) 10.Nb5+– (10.e4 g4 11.d5 gf3 12.de6 fe2 13.ed7 Qd7) 10...Kd8 (10...0–0–0 11.d5 Bf7 12.Na7 Kb8 13.Nb5 g4) 11.de5 Ne5? (better 11...de5 12.Be5 Be5 13.Ne5 c6+– 2.79/9 (13...Ngf6+–)) 12.Ne5 (12.Be5 Be5 13.Ne5 Kc8+–) 12...a6 13.Na3 Kc8 14.Nd3 Bb2 15.Nb2 g4 (15...Nf6 16.Qc2+–) 16.Qd4 Nf6 17.Nd3 h5 18.Nf4 Bf7 (18...Re8 19.Rac1+–) 19.Nd5 (better 19.Bd3!? Re8 20.Bf5 Kb8+–) 19...Bd5 20.cd5 Kd7 (20...Qe5 21.Rad1+–) 21.Rac1 (21.Bd3 Qe5 22.Qe5 de5 23.Bf5 Ke7+–) 21...h4 (21...Qe5 22.Bd3 Qd4 23.Bf5 Kd8 24.ed4 Nd5 25.Rb1+–) 22.b5 (22.Bd3 Rh5 23.Qc4 Kd8+–) 22...b6 (22...Qe5 23.b6 Nd5 24.Qe5 de5 25.bc7 Kc8+–) 23.ba6 Ne4 (23...Qe5 24.Qa4 Kd8 25.Rc7 h3+–) 24.Bb5 (24.Bb5 c6 25.Bc6 Kc7 26.Nb5 Kc8 27.Qh8 Qd8 28.Qg7 Nc5 29.Qb7 Nb7 30.ab7 Kb8 31.ba8Q) 1–0. Koester,Roman (2010) – Zagrabski,Marc, Ruhrhalbinsel op, 2004.

5.Nf3 Be7

6.Nc3 c6 7.a3 (7.d4 Nd7 (7...Qc7 8.a3 Nf6 9.Be2 0–0 10.0–0 Nfd7 11.Rc1 e4+=; 7...e4 8.d5 Bc8 9.Nd4 Nf6 10.a3 0–0 11.Be2 c5+=) 8.Be2 e4 9.d5 ef3 10.de6 fe2 11.ed7 Qd7=; 7.Be2 Nh6 (7...Na6 8.b5 cb5 9.cb5 Nc7 10.0–0 Nd5 11.a4 Rc8=; 7...a5 8.b5 Bf6 9.d4 e4 10.Nd2 Ne7 11.0–0 0–0+=) 8.d4 e4 9.Nd2 d5 10.b5 0–0 11.Qb3 Qd7=) 7...Nd7 (7...Bf6 8.d4 e4 9.Nd2 Ne7 10.Be2 d5 11.0–0 0–0=; 7...Nf6 8.d4 e4 9.Ng5 Bd7 10.Be2 0–0 11.0–0 Ne8+=) 8.d3 (8.d4 Nb6 9.de5 Nc4 10.Bc4 Bc4 11.ed6 Bf6+–) 8...Bf6 (8...Nh6 9.d4 0–0 10.d5 cd5 11.Nd5 Nb6=) 9.Be2 Ne7 10.0–0 (10.d4 e4 11.Nd2 0–0=) 10...0–0 (10...d5 11.Qb3 0–0=) 11.Qc2 (11.d4 e4=) 11...Rc8 (11...d5=) 12.a4 d5 13.c5 g5 (13...a5 14.Ba3=+) 14.Nd2 (14.d4 e4 15.Nd2 g4=) 14...Ng6 15.Bh5 Kg7 16.Bg6 hg6 17.Ne2 Rh8 18.f4 g4 (18...gf4 19.ef4 e4 20.Rae1=) 19.fe5+= Ne5 20.Nf4 Bf7 21.d4 (21.Rae1 Qc7+=) 21...Nd7= 22.Rf2 (22.b5 b6=) 22...Nf8 (22...Qc7 23.Nf1=) 23.Nf1 Bh4 24.g3 (24.Re2 Qe7=) 24...Bf6=+ 25.Re1 Nh7 26.b5 Ng5 27.Nd2 Rh6 28.Qd3 Qh8 29.Bc3 Qh7 30.bc6 bc6 31.Qa6 Rh8 32.Ree2 (32.Qc6?? Rh2 33.Kf1 Nf3 34.Rf3 Rd2 (34...gf3?! 35.Nf3 Rc2 36.Ne2–+) 35.Bd2 gf3–+) 32...Nf3 33.Nf3 gf3 34.Rb2 (34.Rf3? Rh2 35.Rg2 g5–+) 34...g5 35.Nd3 Rh3 36.Ne1?? (36.Ne5 Rg3 37.Kh1=) 36...Rg3–/+ 37.Kh1 g4 38.Qa7 (better 38.Qc6!? Rh3 39.Rfc2–+) 38...Rh3 39.Nf3 Rf3 40.Rf3 gf3 41.Qc7 Qh3 42.Kg1 Rh6 (42...Rh4!? 43.Rf2–+) 43.Be1 Rg6 (43...Rg6 44.Bg3 Bh4 45.Qe5 Kh7–+) 0–1. Lothal,G – Hengst,Hansi, corr DDR, 1985.

6.Nc3 Bd7 7.Be2 e4 (7...Nf6 8.0–0 e4 9.Ng5 Nc6 10.b5 Ne5 11.f4 Ng6+=) 8.Nd4 Nf6 9.d3 0–0 10.b5 c5 11.Nb3 Be6+=.

6.Nc3 Nf6 A) 7.Qb3 a5 (7...Nc6 8.Be2 e4 9.Ng5 Bg8 10.b5 Na5 11.Qa4 c6=; 7...c6 8.d4 e4 9.Ng5 Bg8 10.Be2 Nbd7 11.0–0 h6=) 8.ba5 Nc6 9.Qb7 Na5 10.Qb4 0–0 11.Qa4 Kh8=; B) 7.d4 a5 (7...e4 8.Ng5 Bc8 9.Be2 0–0 10.0–0 a5 11.b5 Ne8+=; 7...0–0 8.Ng5 Qc8 9.Ne6 Qe6 10.d5 Qf7 11.Bd3 Qg6=) 8.de5 de5 9.Qd8 Kd8 10.Ne5 ab4 11.Nd5 Re8=; C) 7.a3 a5 (7...0–0 8.d4 e4 9.Ng5 Bc8 10.Be2 Qe8 11.0–0 a5+=; 7...Bd7 8.Be2 a6 9.0–0 a5 10.d4 e4 11.Nd2 0–0+=) 8.d4 ab4 9.ab4 Ra1 10.Qa1 0–0 11.Ng5 Bc8+=.

6.Nc3 Nh6 A) 7.d4 0–0 (7...e4 8.d5 Bf7 9.Nd4 0–0 10.a3 Bf6 11.Be2 Be5+=) 8.de5 de5 9.Ne5 Bb4 10.Qb3 Na6 11.a3 Ba5=; B) 7.Be2 0–0 (7...a5 8.b5 0–0 9.0–0 Nd7 10.d4 Bf6 11.Rb1 e4=; 7...Bf6 8.d4 e4 9.Nd2 0–0 10.0–0 a5 11.Qa4 Nc6+=) 8.0–0 a5 9.b5 Nd7 10.d4 Bf6 11.d5 Bf7=.

6.d3 Nf6 7.g3 0–0 8.Bg2 Nc6 9.b5 Nb8 10.0–0 Nbd7? (10...c6 11.Ng5 Bc8 12.Nc3=) 11.a4 (better is 11.Ng5!? Bf7 12.Nf7 Rf7 13.Bb7+/–) 11...Nc5= 12.Qe2 (12.d4 ed4 13.ed4 Nce4= (worse is 13...Bc4 14.dc5 Bf1 15.Qf1+/–)) 12...Ng4 (better is 12...e4!? 13.de4 fe4+=) 13.h3 Nf6 14.Ng5 h6? (better is 14...Bc8=) 15.Ne6+– Ne6 16.Bb7 Rb8 17.Bg2 f4 (17...Qe8 18.Nd2+–) 18.Nc3 (better is 18.ef4 Nd4 19.Bd4 ed4 20.Bc6+–) 18...Nh5?? (better is 18...fe3 19.fe3 Ng5+–) 19.ef4 (better is 19.Qh5 Nc5 20.Qe2 Bf6+–) 19...ef4 (19...Nef4 20.gf4 Nf4+–) 20.Qe6 Kh8 21.g4 (21.Bf3 Nf6 22.Nd5 Re8+–) 21...Nf6 (21...f3 22.gh5 fg2 23.Kg2+–) 22.Nd5 Nd5 (22...Re8 23.Qf7 f3 24.Rfe1+–) 23.Qd5 (23.Qh6! Kg8 24.Qg7) 23...Bg5 (23...Bf6 24.d4+–) 24.f3 (24.Bd4!? c5 25.bc6 Bf6+–) 24...Qd7 25.Rfe1 Rbe8 26.Re4 Re4 27.de4 Re8 28.Rd1 Re6 29.Re1 White prepares the advance e5 29...Bf6 30.Bf6 Rf6 31.Bf1 Re6 32.e5 Qe7 33.Qa8 Kh7 34.Bd3 (34.Bd3 g6 35.Qa7 de5 36.a5+–) 1–0. kannisogoet – dudibudi, internet, 2013.

6.d4 g5 7.de5 g4 8.Nd4 Bd7 9.e6 Bc8 10.Nf5 Be6 11.Ng7 Kf7 12.Ne6 Ke6 13.Qg4 Kf7 14.Qg7 Ke6 15.g3 Nf6 16.Bh3 (16.Bh3 Ng4 17.Bg4#) 1–0. b4_player – opponent, gamecolony.com, 2007.

6.d4 e4

7.Nfd2 d5 8.cd5 Bd5 9.a3=.

7.Nfd2 Bf6 8.g4 (8.Be2 c5=) 8...fg4 (8...Bh4 9.gf5 Bf5 10.Rg1=) 9.Ne4 d5 (9...Nd7 10.h3 gh3 11.Nbd2=) 10.cd5+= (worse is 10.Nf6 Nf6 11.Bg2 c6=) 10...Bd5 (10...Qd5 11.Nbc3 (worse is 11.Nf6 Nf6 12.Rg1 Qd6+=) 11...Qd8 A) worse is 12.Nf6 A1) worse is 12...gf6 13.Bg2 a5 14.ba5+/– (worse is 14.Bb7 Ra7 15.Bg2 ab4+=); A2) 12...Nf6 13.b5 a6+=; B) 12.h3+=) 11.Nbc3 (11.Qg4 Nc6 12.a3+/– (12.Nf6? Nf6 13.Qg1 Nb4–+)) 11...c6? (better is 11...Be6+=) 12.Qg4+– (worse is 12.Nd5 cd5 13.Qa4 Kf7+/–) 12...Nd7 (12...Bf7 13.Nc5 Qc7 14.N3e4+–) 13.Nd5 cd5 14.Qh5 g6 (14...Ke7 15.Qd5 Qb6+–) 15.Qd5 Ne7 (15...Ke7 16.Bb5 Nb6 17.Qb7 Kf8+–) 16.Nd6 Kf8 17.Qf7 1–0. Janek – yxdjango, internet, 2017.

7.d5 Bf6

8.Bf6 Qf6 9.Nd4 Bd7 10.Nc3 Ne7 11.c5 0–0=.

8.Nd4 Bd7

9.Qb3 c6 (9...a5 10.ba5 (10.c5 Ne7 11.ba5 dc5 12.Qb7 Na6 13.Ba6 cd4 14.Bd4 Bd4=) 10...Ra7 (10...Qc8 11.Be2 Na6 12.Nd2 Nc5 13.Qb4 Ne7 14.0–0 Ng6+=) 11.Be2 Nh6 12.Nb5 Bb5 13.cb5 Ra5 14.Nc3 Nd7+=; 9...Be5 10.c5 (10.Nd2) 10...Nf6 (10...Ne7 11.Bc4 Ng6 12.0–0 Nh4 13.f4 ef3 14.Nf3 Nf3+=; 10...a6 11.Bc4 Nh6 12.b5 Qg5 13.c6 bc6 14.bc6 Bc8+=) 11.Bc4 Ng4 12.h3 Qh4 13.0–0 Bh2 14.Kh1 Be5+=; 9...Ne7 10.Be2 0–0 (10...a5 11.ba5 Qc8 12.Bh5 g6 13.Be2 Be5 14.c5 Na6+=; 10...Be5 11.0–0 Ng6 12.Nd2 Na6 13.f4 Bf6 14.Rac1 c5+–) 11.0–0 a5 12.ba5 Bc8 13.c5 Ra5 14.cd6 cd6+=; 9...Qe7 10.c5 Be5 (10...Nh6 11.Be2 Ng4 12.Nd2 Be5 13.Bg4 fg4 14.Qc4 dc5+–) 11.Bc4 Nh6 12.Nd2 Ng4 13.h3 Qh4 14.0–0 Bh2+–) 10.Nd2 (10.c5 Bc8 (10...Qe7 11.Nd2 Bc8 12.Nc4 dc5 13.bc5 Qc7 14.Nd6 Kf8+–) 11.Bc4 Ne7 12.dc6 bc6 13.cd6 Qd6 14.0–0 Be5+–; 10.Be2 Be5 11.0–0 Nf6 12.Nd2 Qe7 13.f4 Bd4 14.Bd4 0–0+=) 10...a6 (10...Na6!?+= 11.g4 Qb6 12.a3 fg4 13.Ne4 c5 14.Nb5 Bb5+–; 10...Ne7 11.dc6 bc6 12.Be2 0–0 13.c5 d5 14.0–0 Qc7=; 10...Qc7 11.dc6 bc6 12.c5 Ne7 13.Nc4 dc5 14.bc5 Nc8+–) 11.c5+– dc5 12.bc5 Qc7 (better 12...Ra7 13.d6 Qa5+– 14.Ne6 Bb2+–) 13.d6+– Qc8 14.Bc4 (14.Nc4 Ra7+–) 14...Nh6 15.Ne6 Be6 16.Be6 Nd7 17.Nc4 Qd8 (17...Bb2 18.Qb2 (18.Nb2?! b5+–) 18...Kf8 19.Nb6 Nc5 20.Bc8 (20.Nc8?! Nd3 21.Ke2 Nb2+–) 20...Nd3 21.Ke2 Nb2 22.Na8+–) 18.Bd7 Qd7 19.Bf6 gf6 20.Nb6 Qf7 (20...Qd8 21.Na8 Qa8 22.Qe6 Kf8 23.Qf6 Nf7 24.Qf5+–) 21.Na8 (21.Na8 Qb3 22.ab3+–) 1–0. Dluhosch – Collen, corr, 1989.

9.b5 Nh6 10.Qh5 Nf7 11.Ne6 Be6? 12.de6+– g6 13.ef7 Kf7 14.Qe2 1–0. Bonetti,Shane – guest313, ICC, 2002.

9.Nc3 a5 10.b5 (10.ba5 Ne7 11.Be2 0–0 12.0–0 Ra5 13.Qd2 Ra8 14.f3 ef3=) 10...Be5 (10...Qe7 11.Qh5 g6 12.Qd1 Be5 13.Rb1 Nf6 14.Be2 0–0+=) 11.f4 Bf6 12.Be2 Ne7 13.0–0 0–0 14.a3 Nc8+=.

9.Nc3 Be5 10.a3 (10.Qh5 g6 11.Qd1 Na6 12.a3 Qe7 13.Rc1 Nf6 14.Be2 0–0–0=) 10...a5 (10...Nf6 11.Be2 a5 12.b5 0–0 13.0–0 Re8 14.Qd2 Qe7+=; 10...Qh4 11.c5 dc5 12.bc5 Nh6 13.Qb3 b6 14.d6 Bd4+–) 11.Be2 Nf6 12.b5 0–0 13.0–0 Qe8 14.Qd2 Qg6+=.

9.Nc3 Ne7 10.Be2 0–0 11.0–0 c6 12.Ne6 (12.c5!?+=) 12...Be6= 13.de6 d5 (13...Na6 14.Qd2=+) 14.cd5= cd5 15.Qb3 Qd6 16.Nb5 (16.Rad1 Bc3 (worse 16...Qe6 17.Nd5 Nd5 18.Bc4+–) 17.Qc3 Rf6+=) 16...Qb6= (worse 16...Qe6 17.Nc7 Qd6 18.Na8+–) 17.a4 a6 (17...Bb2 18.Qb2 Na6= (worse 18...Qe6 19.Nc7 Qd6 20.Na8+–)) 18.a5+= Qd8 (18...Qe6? 19.Nc7 Qd6 20.Na8 Bb2 21.Qb2+–) 19.Nd4 Nec6 (better 19...Nbc6!?=) 20.e7+– Qe7 21.Qd5 Kh8 22.Nf5 Qd7 23.Qc5 Ne7?? (better 23...Qe8 24.Bf6 Rf6+–) 24.Bf6 Nf5 (24...Rf6 25.Ne7 Qe8+–) 25.Qf8 1–0. DEFFM – raskanueces, freechess.org, 2017.

9.Nc3 Ne7 10.g4 fg4 11.Ne4 Be5 12.Nc3 Na6 13.b5 Nc5 14.Qd2 Nf5 15.0–0–0 Qg5 16.Re1 Nh4 17.Be2 Rf8 18.Ba3 Qe7 19.Ref1 Nf3 20.Bf3 gf3 21.h4 a6 22.Rfg1 Rf7 23.h5 Rf6 24.Rd1 0–0–0 25.Qc2 h6 26.Qd2 Re8 27.Rdg1 ab5 28.Bc5 dc5 29.Ndb5 Ra6 30.Rd1 Qf8 31.Rh4 Qf6 32.Rhh1 Bc3 33.Nc3 Ra4 34.Na4 Qa1 35.Kc2 Qa2 36.Kc1 Qa1 37.Kc2 Ba4 38.Kd3 Bd1 39.Rd1 Qe5 40.Qa5 Qb2 41.Qa8 Kd7 42.Qa4 c6 43.Rd2 Qb1 44.Kc3 Qc1 45.Kd3 Kd6 46.dc6 Rd8 47.Qa5 b6 48.Ke4 Ke6 49.Qb6 Rd2 50.c7 Kd7 51.c8Q Kc8 52.Qc5 Kd7 53.Qf5 Ke7 54.Qe5 Kd8 55.Qa5 Ke8 56.Qe5 Kf7 57.Qf5 Kg8 58.Qe6 Kh7 59.Qf5 Kh8 60.Qf8 Kh7 61.Qf5 Kg8 62.Qe6 Kf8 63.Qf5 Ke8 64.Qe5 Kf8 65.Qf5 Ke8 66.Qe5 ½–½. MacChess 5 – MacChess 5, 2000.

9.c5 A) 9...Qe7 10.Qb3 a6 (10...Nh6 11.Be2 Ng4 12.Nd2 Ne5 13.0–0 a6 14.Rfc1 Ra7+–; 10...Be5 11.Bc4 Nh6 12.Nd2 Ng4 13.h3 Nf6 14.0–0 f4+=) 11.Bc4 Nh6 12.Nc3 Bd4 13.ed4 0–0 14.0–0 Qh4+=; B) 9...Ne7 10.Ne6 Be6 11.Bf6 gf6 12.de6 Nbc6 13.Nc3 h5 14.Nd5 Nd5+–; C) 9...Be5 10.Qb3 (10.Bc4 Nf6 11.0–0 Bh2 12.Kh2 Ng4 13.Kg3 Qf6 14.Nf5 Qf5=) 10...Nf6 (10...Ne7 11.Bc4 Ng6 12.0–0 Nh4 13.f4 ef3 14.Nf3 Nf3+=; 10...Nh6 11.Nd2 Ng4 12.Nc4 Qh4 13.g3 Qh6 14.h3 a6+=) 11.Bc4 Ng4 12.h3 Qh4 13.0–0 Bh2 14.Kh1 Be5+=.

9.Nd2 c5 10.dc6 bc6 11.Qb3 Ne7 12.c5+= Nd5 13.cd6+/– 0–0 14.Bc4+– Kh8 15.Bd5 cd5 16.Qd5 Bd4 17.Qd4 Qg5 18.0–0 Nc6 19.Qc5 Rac8 20.Rfd1 Rfe8 21.Rac1 Ne5 22.Qa7 Ra8 23.Qc7 Rac8? 24.Qa5 Nd3 25.Rc8 Rc8 26.Ne4! Qg4 27.f3 Qg6 28.Rd3 fe4 29.fe4 Rc2 30.Qa8 Bc8 31.Rd2! (31.Rd2 Rc4 32.d7+–) 1–0. Bonetti,Shane – guest704, ICC, 2002.

9.Be2 c5 (9...Na6; 9...Be5; 9...a5) 10.dc6 Nc6 11.a3 Nd4 12.Bd4 Bd4 13.Qd4 Qf6 14.Nc3 Qd4=.

9.Qh5 g6 10.Qd1 (10.Qe2 a5 11.a3 ab4 12.ab4 Ra1 13.Ba1 c5 14.dc6 bc6=) 10...c5 (10...Be5; 10...Nh6) 11.dc6 Nc6 12.Qd2 Nd4 13.Bd4 Bd4 14.Qd4 Qf6=.

5.Nf3 h6

6.Nc3 Nf6 7.b5 Be7 8.Nh4 0–0 9.Qc2 Nbd7 10.Nf5 Bf5 11.Qf5+/– Nc5 12.Qg6 Rf7 13.Be2 Ne6 14.0–0 c6 15.Rae1 d5 16.bc6 bc6 17.cd5 cd5 18.Rb1 d4 19.Nb5 Qa5?? 20.Bc4 Nd8 21.ed4 ed4 22.Nd4 Qd2 23.Nf5 Bf8 24.Bf6 (24.Bf6 Qd5 25.Bd5 Ne6 26.Be6 Kh8 27.Bf7 Rd8 28.Qh6#) 1–0. miec – dunhill07, internet, 2009.

6.d4 e4 7.Nfd2 Nf6 8.d5 Bf7 9.Be2 c5 10.b5 b6 11.0–0 a5 12.a4 Nbd7 13.f3 Ne5 14.fe4 fe4 15.Nc3 Qe7 16.Nce4 Ne4 17.Ne4 Nc4 18.Bc4 Qe4 19.Qf3 Bg6 20.Qe4 Be4 21.Rf4 Bg6 22.Raf1 Rg8 23.e4 0–0–0 24.e5 Be7 25.e6 Bc2 26.Rf7 Rde8 27.Rg7 Rg7 28.Bg7 Ba4 29.Bf6 Kd8 30.Be7 Re7 31.Rf8 Re8 0–1. typul48 – fogudi, internet, 2014.

5.h4 Nf6=+

6.a3 A) 6...a5 7.b5 (7.d4 ed4 8.ed4 d5 9.c5 Be7 10.Ne2 0–0 11.Nf4=+; 7.Nf3 ab4 8.ab4 Ra1 9.Ba1 Bd7 10.d3 Be7 11.h5=) 7...Be7 8.d4 e4 9.d5 Bd7 10.h5 0–0 11.Be2=; B) 6...Be7 7.Nf3 (7.Be2 0–0 8.Nf3 Nfd7 9.d4 e4 10.Ng5 Bg5 11.hg5=+; 7.h5 a5 8.h6 g6 9.Nf3 Bd7 10.Be2 0–0 11.b5=) 7...Bd7 8.Be2 e4 9.Nd4 0–0 10.0–0 a5 11.d3=.

6.d4 ed4 7.ed4 Qe7 8.Qe2 d5 9.c5 Ne4 10.Nc3 Nd7 11.Nf3=.

6.Nf3 h6 (6...Bd7 7.d4 (7.Be2=+ Be7 8.0–0 e4 9.Ng5 0–0 10.c5 d5 11.d3=+; 7.Nc3 e4 8.Ng5 h6 9.Nh3 Be7 10.Nd5 0–0 11.Ne7=) 7...e4 8.Nfd2 Be7 9.h5 d5 10.Nc3 Bb4 11.Nd5=; 6...Be7 7.d4 0–0 8.Ng5 Bc8 9.de5 de5 10.Qd8 Rd8 11.c5=; 6...Bc8 7.a3 (7.d4 e4 8.Nfd2 Be7 9.Nc3 0–0 10.d5 a5 11.a3=; 7.Be2 e4 8.Nd4 Be7 9.h5 c5 10.Nc2 0–0 11.h6=+) 7...Be7 8.Be2 0–0 9.d4 e4 10.Nfd2 d5 11.h5=) 7.Nc3 (7.d4 Bd7 8.de5 de5 9.c5 e4 10.Ne5 Be6 11.Qd8+=; 7.a3 Bf7 8.Be2 Be7 9.0–0 0–0 10.d4 e4 11.Nfd2=) 7...Be7 8.h5 (8.d4 Nbd7 (8...0–0= 9.de5 de5 10.Ne5 Bb4 11.Qb3=) 9.d5 Bf7 10.Qc2 a5 11.a3=) 8...Nbd7 (8...0–0 9.d4 Nbd7 10.d5 Bf7 11.Qc2=+) 9.d4 e4 (9...a5 10.b5= (10.ba5 0–0 11.Qc2=) 10...0–0 11.Be2=; 9...c6 10.Nh4 0–0 11.d5=) 10.Nh4 (10.d5!? Bf7 11.Nd4+=) 10...Nf8= 11.d5 Bd7 12.Ne2 Rg8 (12...Ng4 13.g3 (worse 13.Bg7 Bh4 14.Rh4 Qh4–+) 13...Bf6 14.Rb1=) 13.Nf4 Ng4 14.Nhg6 Bf6 15.Bd4 c6 (15...Ng6 16.hg6 a5 17.b5=) 16.Rc1 (16.Nf8 Rf8 17.Be2 c5 18.bc5 dc5 19.Bf6 Qf6+=) 16...a5 (16...Ng6 17.hg6 c5 18.Bf6 Qf6 19.bc5 dc5 20.Qb3=) 17.b5 c5 18.Bf6 Qf6 19.Nf8 Rf8 20.Be2 Ne5 21.Qd2 b6 22.Rd1 0–0–0 23.Rc1 Rh8 24.Bf1 Rdf8 25.Ne2?? (better 25.Rd1=) 25...Nd3–+ 26.Kd1 Nf2 27.Ke1 (27.Kc2 Nh1 28.Nf4 Ng3–+) 27...Nh1 28.Nc3 (28.Nf4 Qh4 29.Kd1 Be8–+) 28...Qh4 29.Kd1 Ng3 30.Na4 (30.Kc2 Qh5 31.Kb2 Qg5–+) 30...Kb7 (better 30...Nf1 31.Nb6 Kd8 32.Qe2–+) 31.Qb2 (31.Qf2 f4 32.Be2 Qg5–+) 31...Qh5 (31...Nf1 32.Qg7 Rd8 33.Kc2–+) 32.Kc2 (32.Be2 Qh1 33.Kd2 Qg2–+) 32...Rf7 (better 32...Nf1 33.Qg7 Qe2 34.Kb1–+) 33.Kb1 Qg5 34.Qf2 Rhf8 35.Qf4 Qf4 36.ef4 g5 37.Nc3 gf4 38.Be2 Re7 39.Rc2 h5 40.Nd1 (40.Kc1 Rg8–+) 40...h4 (40...Ne2 41.Re2 Rg8 42.Nc3–+) 41.Nf2 Rfe8 42.Nh3 (42.Kc1 f3! 43.gf3 Ne2 44.Re2 ef3 45.Re7 Re7–+) 42…Ne2 (42...Ne2 43.Re2 f3 44.gf3 ef3–+) 0–1. Anderson,George – Rutter,Blair (1855), Mating Season op, 2006.

5.Qh5 g6

6.Qd1 A) 6...Na6 7.Nc3 (7.Nf3 Nb4 8.d4 c6 9.a3 Na6 10.de5 Bg7 11.Qc2; 7.Qb3 Bg7 8.Nf3 Nh6 9.Nc3 c5 10.b5 Nc7 11.Be2) 7...Nf6 (7...Nb4 8.Nf3 Nf6 9.d4 ed4 10.Nd4 Bd7 11.Be2; 7...Bh6 8.Nf3 Nf6 9.Qb3 c5 10.b5 Nc7 11.h4) 8.Nf3 Nb4 9.Qb3 a5 10.a3 Nc6 11.Nd5; B) 6...Nf6 7.Nf3 Bh6 8.d4 Nbd7 9.de5 de5 10.Ne5 a5 11.b5; C) 6...a5 7.b5 Nf6 8.Nf3 Bh6 9.Nc3 Nbd7 10.Be2 Qe7 11.0–0.

6.Qf3 e4 (6...Nc6 7.Nh3 Nb4 8.Na3 Bd7 9.Bc3 a5 10.c5 Nf6 11.Qb7) 7.Qe2 (7.Qg3 Nf6 8.Nh3 Nc6 9.Nf4 Bf7 10.Nc3 Bg7 11.Be2) 7...Nf6= 8.Nh3 Bh6 9.Nc3 Nc6 10.Nd5 Ne5 11.Nhf4.

6.Qh3 Qe7 (6...Nc6 7.b5 Nb4 8.Na3–/+ Nf6 9.Bc3 a5 10.d3 Bg7 11.Nf3; 6...Nf6 7.Nf3 Nc6 8.a3 Ne4 9.b5 Na5 10.Nc3 Nc4 11.Ne4) 7.b5 (7.d4 d5= (7...ed4 8.Bd4 Bg7 9.Nd2 Nf6 10.Ngf3 Nc6 11.Be2) 8.cd5 Bd5 9.Nc3 Be6 10.de5 Nc6 11.0–0–0) 7...Bg7=+ (7...Nd7 8.Nc3 Nb6 9.c5 dc5 10.Nf3 Bg7 11.a4; 7...Nf6 8.Nf3 f4 9.Qh4 Nbd7 10.Nc3 0–0–0 11.ef4) 8.g3 (8.d3 a6=+ (8...f4 9.g4 Nf6 10.Nc3 Nbd7 11.Nf3) 9.Nc3 Nf6 10.Be2 0–0 11.Nf3; 8.Nc3 Nf6 9.Nf3 f4 10.Qh4 Nbd7 11.Be2) 8...Nd7 9.Qg2 (9.Bg2 A) 9...Bc4?! 10.Na3 (10.Bb7? Rb8 11.Na3 Bb5–+) 10...Bd3 11.Bb7=; B) 9...f4 10.g4 Nc5 11.Bf1; C) 9...Nc5 10.Bf1 0–0–0–/+ (10...f4 11.Qg2) 11.Nf3; 9.Nf3 f4 10.Qg2 e4 11.Nd4) 9...e4 (9...0–0–0 10.d4–/+ (10.Nf3 Nb6 11.Na3) 10...ed4 11.Nf3; 9...Nc5 10.Nc3 Nf6 11.Nf3) 10.Nc3 (10.Bg7 Qg7 11.Nc3–/+ (11.d4 0–0–0=+)) 10...c5 (10...Nc5 11.Nh3=+ (11.f3–/+); 10...Ngf6 11.Nh3) 11.f3=+ (11.bc6–/+) 11...ef3 12.Nf3 Ne5 13.Ne5 Be5 14.Be2 Nf6 15.0–0 a6 16.a4 0–0 17.Rad1 (17.Qf3 Ne4 18.Rad1 ab5 19.ab5 Rfe8=) 17...Bc3 (17...ab5!? 18.ab5 Ne4=) 18.Bc3+= (worse 18.dc3 ab5 19.ab5 Ne4=+) 18...ab5 19.ab5 Ra4 (19...Ne4 20.Bb2=) 20.Ra1 Rfa8 21.Ra4 Ra4 22.Bf6 (22.d3 Ra2+–) 22...Qf6 23.Qb7 Qd8 24.d4 (24.Rf4 Ra2+–) 24...Ra8? (24...cd4 25.ed4 Qg5 26.Qb8 Kg7 27.Qc7 Bf7+–) 25.dc5 White gets in control 25...dc5 (25...Ra2 26.Bf3 dc5 27.Rd1+–) 26.Rd1 Qc8 (26...Qe8 27.Bf3 Rb8 28.Qc6 Bc4 29.Qc5 Qb5 30.Qd6=) 27.Qc8+– Rc8 28.Rd6 Kf7 29.Ra6 Bd7 (29...Re8 30.Ra7 Re7 31.b6+–) 30.Bf3 Ke7 31.b6 (31.e4 fe4 32.Be4 Be6 33.Ra7 Kd6+–) 31...Kd8 (31...Be6 32.b7 Rb8 33.Ra8 Rb7 34.Bb7 Bc4 35.Rc8+–) 32.Bd5 (32.Kf2 Rb8 33.e4 Bc8+–) 32...Rb8 33.Ra8 (33.b7 Kc7+–) 33...Ra8+– 34.Ba8 Ba4 (34...Be6 35.b7 Kc7 36.e4=) 35.Bd5 (35.e4 Bb3 36.b7 Kc7+–) 35...h6 (35...Bb3 36.Kf2+–) 36.Kf2 Bd1 (36...Bb3 37.h3+–) 37.e4 fe4 38.Be4 Kd7 (38...Bb3 39.b7 Kc7 40.Bd5+–) 39.Bd5 (39.Bg6 Kc6 40.Ke1+–) 39...Ke7?? (better 39...Bg4+–) 40.Ke3 (better 40.b7+–) 40…Kd6 1–0. Mroz,Antoni – Majtyka,W, corr Poland, 1989.

4.Nf3 Nf6

5.Nc3 Bd7 6.Qb3 Be7 7.c5 Nc6 8.Na4 a5.

5.Nc3 Be7 6.c5 (6.Qb3 0–0 7.c5 Kh8 8.cd6 cd6) 6...Nc6 7.Qa4 0–0 8.b5 Nd4.

5.d3 Be7 6.g3 0–0 7.Bg2 c6 8.Nbd2 Na6 9.0–0 (9.a3!?=) 9...Nb4–/+ 10.a3 Na6 11.Rc1 Nc7 12.c5 dc5 13.Ne5 Nfd5 14.Qb3 Kh8 15.e4 fe4 16.de4 c4 (16...Nf6!? 17.Qc2 Qe8+=) 17.Nec4 Nf6 18.Rcd1 Qe8 (18...b5 19.Ne5 Qe8 20.Qc3=) 19.e5+= Nfd5 20.Rfe1 Qf7 21.Ne4 b5 (21...Nb6 22.Na5 Qb3 23.Nb3=) 22.Na5 (22.Ncd6 Qg6+/–) 22...Bd7 (22...c5 23.Nc6 c4 24.Qc2=) 23.f4 Bc5?? (better is 23...Qg6+=) 24.Nc5+– Bg4 (24...Be8 25.Rc1+–) 25.e6 (better is 25.Nc6 Bd1 26.Rd1 Nb6 27.Qf7 Rf7+–) 25...Bd1 26.Qd1 (26.ef7?! Bb3 27.Ncb3 Rf7 28.Nc6 Raf8+–; 26.Rd1?! Ne6 27.Nc6 Nc5 28.Qd5 Ne6+–) 26...Qe7 27.Nd7 (better is 27.Qd4!? Rfe8+–) 27...Ne6 28.Nf8 Qc5 (28...Rf8 29.Bd5 cd5 30.Qd5 Qc5 31.Qc5 Nc5 32.Re7+–) 29.Kh1 Nf8 30.Nc6! Ne3 (30...Qc6 31.Qd5 Remove defender) 31.Bg7! Kg7 32.Qa1 Kh6 33.Ne5 Ng2 (33...Rc8 34.Nf7 Kg6 35.Nh8 Kf5 36.Bh3 Ke4 37.Bc8+–) 34.Kg2 (34.Ng4 Kg6 35.Qf6 Kh5 36.Re5 Kg4 37.Qf5 Kf3 38.Qh5 Kf2 39.Qe2) 34...Qd5 (34...Nd7 35.Nd7 Qd6+–) 35.Nf3 (better is 35.Kh3 Nd7 36.Rd1 Qd1 37.Qd1 Ne5 38.fe5+–) 35...Ng6 36.Qc1 Qf5 37.Ne5 (37.Qe3!? Rd8+–) 37...Rc8+/– 38.Qe3 Rc2 39.Kg1 Qh3 40.f5 Kg7 41.f6 (worse is 41.Qa7 Kh6 42.Qe3 Kg7 43.f6 Kf6 44.Qf3 Kg7+–) 41...Kf6 42.Qf3 Qf5 (42...Kg7 43.Ng4 Rg2 44.Kh1 Rh2 45.Nh2 Qd7+–) 43.Nd7 Kg5 44.h4 Nh4 45.gh4 Kg6 46.Nf8 1–0. croach (2370) – jupiter (2390), net–chess.com, 2013.

5.d4 e4 6.Nfd2 d5 (6...Be7 7.Nc3 d5 8.a3 Be6 9.e3 0–0 10.cd5 Nd5 11.Bc4 c6=; 6...f4 7.e3 fe3 8.fe3 d5 9.cd5 Qd5 10.a3 Qg5 11.Qb3 a5=+; 6...e3 7.fe3 d5 8.a3 Ng4 9.cd5 Ne3 10.Qa4 Bd7 11.Qb3 f4=+) 7.b5 (7.a3 Be7 8.e3 0–0 9.Be2 a5 10.b5 Be6 11.c5 Ne8=) 7...c6 (7...a6 8.Qa4 (8.e3=+ ab5 9.cb5 Bd6 10.Qb3 0–0 11.Ba3 Be6=+) 8...Nbd7 9.e3 Nb6 10.Qb3 dc4 11.Nc4 Be6=+) 8.a4 (8.e3 cb5 9.cb5 f4 10.ef4 Bd6 11.g3 0–0=) 8...Be6 (8...e3 9.fe3 dc4 10.Qc2 Be6 11.e4 Ne4=+) 9.e3 Bd6 (9...dc4 10.Bc4 Bc4 11.Nc4 a6=) 10.Qb3 0–0 11.Nc3 Nbd7 12.a5 a6 13.c5 Be7 14.bc6 bc6 15.Na4 Ra7 16.Nb6 Nb8 17.f4 Ne8 18.Nb1 g5 19.Na3 Bf6 20.Nc2 Rg7 21.g3 h5 22.0–0–0 h4 23.Nb4 Nc7 24.Bc3 Bf7 25.Be2 Kh7 26.Rdf1 gf4 27.gf4 Rfg8 28.Qd1 h3 29.Be1 Bh4 30.Bh5 Kh6 31.Bf7 Rf7 32.Bd2 Rg2 33.Rhg1 Rfg7 34.Rh1 Nb5 35.Nc2 Qf6 36.Be1 Be1 37.Qe1 Qg6 38.Qh4 Qh5 39.Qf6 Kh7 40.Re1 R2g6 41.Qf8 Nd7 42.Qe8 Nf6 43.Qc6 Ng4 44.Qc8 Nf2 45.Nd7 Rd7 46.Qd7 Rg7 47.Qe6 Nh1 48.Rh1 Rg2 49.Re1 Rh2 50.Qa6 Nc7 51.Qb7 Rg2 52.a6 Rg7 53.a7 h2 54.Rh1 Qe2 55.Qc7 Rc7 56.a8Q Rg7 57.Qd5 Rg1 58.Kb2 Qb5 59.Kc3 Qa5 60.Kb3 Qb5 61.Nb4 Rh1 62.Qf5 Kg7 63.Qe5 Kg8 64.Qe6 Kg7 65.Qe7 Kg8 66.Qg5 Kf8 67.Qf5 Kg7 ½–½. Orev,Petar – Bobekov,Radko, BUL–ch (16), 1964.

5.g3 Be7 6.Bg2 0–0 7.0–0 Be6 8.d3 Nbd7 9.Nc3 Rb8 (9...h6 10.Nh4=) 10.e3 (10.Ng5 Bf7+/–) 10...Nb6 11.a4 c6 12.a5 Nbd7 13.Qe2 (13.Ng5 Bf7+/–) 13...Qc7 14.b5 (better is 14.Ng5 Bf7 15.f4+=) 14...c5?? (14...Nc5!?=) 15.Rfb1 (15.Ng5 Bf7+–) 15...b6 16.Nd2 (16.Ng5 Bf7+/–) 16...Rfc8 17.ab6 ab6 18.Ra2 Ra8?? (18...Rf8 19.Rba1+/–) 19.Rba1 (better is 19.Ba8 Re8 20.Rba1+–) 19...Ra2+/– 20.Ra2 Nf8 21.Qf1 Ng6 22.Qa1 h6 23.Ra8 Ra8 24.Qa8 Kh7 25.Qc6 Bd8 26.Na4 (26.f4 Ne7 27.Qc7 Bc7+=) 26...Bd7 (26...Qa7!? 27.Qa8 Qa8 28.Ba8 d5=) 27.Qc7+= Bc7 28.Nf3 (28.f4 Be6+=) 28...e4 29.de4 Ne4 (worse is 29...fe4 30.Nd2 d5 31.Bf6 gf6 32.cd5+/–) 30.Ne1 (30.Nc3 Nc3 31.Bc3 Be6=) 30...Nd2 (better is 30...Be6–/+) 31.Bf1? (better is 31.Bd5=) 31...Be6 32.Nc3 Nc4 33.Bc4 Bc4 34.Nd5?? (better is 34.Kg2–+) 34...Bd5 35.Nc2 0–1. kannisogoet – brudas1995, internet, 2013.

5.e3

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3).

5.e3 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7).

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    Available lines:
  • 1.b4 (4 players, 1 day/move)
  • 1.b4 (4 players, 10 days/move)
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  • 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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