OPENINGS THEORY

- ECB: ECO CODES BASE -
(ECB Classification)

- C43 ii - r** to h6*

[C43-r**] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 (Qh4?, Bb4+?) +/=

1. «»

[C43-s**] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5) Csom Retort (Nd6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd6?! +/=

1. «»

[C43-t**] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5) Schrader Retort (Be6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Be6?! +/=

1. «»

[C43-u**] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5) Delmar Retort (Nf6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nf6!? (6.0-0) +/=

1. «»

[C43-v**] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5) Schlechter Retort (Nc6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nc6!? (6.Nxc6!) +/=

1. «»

[C43-w**] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5) Schlechter Retort (Nc6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nc6!? 6.Nxc6! bxc6 7.0-0 (Bd6) +/=

1. «»

[C43-x**] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5) Davidson Retort (Be7) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Be7!? +/=

1. «»

[C43-y**] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5) Davidson Retort (Be7) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Be7!? 6.0-0 +/=

1. «»

[C43-z**] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5) Davidson Retort (Be7) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Be7!? 6.0-0 0-0 +/=

1. «»

[C43-a***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5) Davidson Retort (Be7) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Be7!? 6.0-0 0-0 7.c4! (Lasker (Barbour)) +/=

1. «»

[C43-b***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6

1. «»

[C43-c***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6) Kopaev Retort (6.c4) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.c4?! =

1. «»

[C43-d***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6) Urseanu Retort (6.Nd2) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.Nd2?! Nxd2 +/=

1. «»

[C43-e***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6) Urseanu Retort (6.Nd2) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.Nd2?! Bxe5! (Szabo) =/+

1. «»

[C43-f***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6) Alekhine Retort (6.Nc3) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.Nc3!? +/=

1. «»

[C43-g***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6) Alekhine Retort (6.Nc3) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.Nc3!? Nxc3 7.bxc3 (0-0) +/=

1. «Mortensen, Erling (2470) - Danielsen, Henrik (2460) C43 (34) 1-0 Tonder dk-ch (9), 1993»

[C43-h***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 +/=

1. «»

[C43-i***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0) Ayerra Retort (6...Nc6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 Nc6 (7.Nxc6 bxc6) +/=

1. «»

[C43-j***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0) Ribera Amal Retort (6...Bxe5) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 Bxe5 (7.dxe5 Nc5) +/=

1. «»

[C43-k***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0) Eisinger Retort (6...Nd7) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 Nd7 +/=

1. «»

[C43-l***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0) Eisinger Retort (6...Nd7) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 Nd7 7.Nxd7 Bxd7 +/=

1. «»

[C43-m***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0) Eisinger Retort (6...Nd7) Bielczyk-Schulte System (8.Qh5) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 Nd7 7.Nxd7 Bxd7 8.Qh5?! =/+

1. «»

[C43-n***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0) Eisinger Retort (6...Nd7) Kveinys-Maciejewski System (8.Nc3) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 Nd7 7.Nxd7 Bxd7 8.Nc3 +/=

1. «»

[C43-o***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0) Eisinger Retort (6...Nd7) Radulov-Ristic System (8.c4) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 Nd7 7.Nxd7 Bxd7 8.c4 (Qh4) =/unclear

1. «»

[C43-p***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0) Eisinger Retort (6...Nd7) Radulov-Ristic System (8.c4) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 Nd7 7.Nxd7 Bxd7 8.c4 c6 =/unclear

1. «»

[C43-q***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0) Eisinger Retort (6...Nd7) Radulov-Ristic System (8.c4) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 Nd7 7.Nxd7 Bxd7 8.c4 c6 9.Nc3 =/unclear

1. «»

[C43-r***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0) Eisinger Retort (6...Nd7) Radulov-Ristic System (8.c4) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 Nd7 7.Nxd7 Bxd7 8.c4 c6 9.cxd5 cxd5 (10.Nc3) =/unclear

1. «Svider, Peter (2695) - Ponomariov, Ruslan (2684) C43 (44) 0-1 World Championship, Moscow (6.3), 2001»

2. «de Vreugt, Dennis (2511) - Nielsen, Peter Heine (2578) C43 (98) 0-1 15th North Sea Cup (3) Esbjerg (DEN), 2000»

[C43-s***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0) Eisinger Retort (6...Nd7) Radulov-Ristic System (8.c4) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 Nd7 7.Nxd7 Bxd7 8.c4 c6 9.cxd5 cxd5 10.Qh5 =/unclear

1. «»

[C43-t***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0) Eisinger Retort (6...Nd7) Radulov-Ristic System (8.c4) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 Nd7 7.Nxd7 Bxd7 8.c4 c6 9.cxd5 cxd5 10.Qh5 0-0 11.Qxd5 Bc6 12.Qh5 g6 13.Qh3 =/unclear

1. «»

[C43-u***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0 0-0) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 (7.Qh5) +/=

1. «»

[C43-v***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0 0-0) Lilja Retort (7.Re1) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.Re1 +/=

1. «»

[C43-w***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0 0-0) Dus Chotimirsky Retort (7.Nc3) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.Nc3 +/=

1. «»

[C43-x***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (5.Nxe5 Bd6 6.0-0 0-0) Walcott Retort (7.Nd2) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.Nd2 +/=

1. «Meade, P - Wheeler, Jerry (2230) C43 (38) 0-1 Devon V Glos, B2, Cheltenham, 2003»

[C43-y***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (6.0-0 0-0 7.c4) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.c4 (f5?! (Jaenisch))+(Nf6) +/=

1. «»

[C43-z***] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (6.0-0 0-0 7.c4) Tylor Retort (7...Nc6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.c4 Nc6 +/=

1. «»

[C43-a4*] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (6.0-0 0-0 7.c4) Pillsbury Retort (7...c6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.c4 c6 (8.Qd2) +/=

1. «»

[C43-b4*] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (6.0-0 0-0 7.c4) Pillsbury Retort (7...c6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.c4 c6 8.Nc3 +/=

1. «Keemink, John W - Olland, Adolf Georg C43 (34) 0-1 IFSB Bundesmeisterschaft 3233, corr, 1932»

[C43-c4*] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (6.0-0 0-0 7.c4) Pillsbury Retort (7...c6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.c4 c6 8.Nc3 Nxc3 9.bxc3 +/=

1. «»

[C43-d4*] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (6.0-0 0-0 7.c4) Drewitt Retort (7...Bxe5) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.c4 Bxe5 8.dxe5 +/=

1. «»

[C43-e4*] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (6.0-0 0-0 7.c4) Drewitt Retort (7...Bxe5) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.c4 Bxe5 8.dxe5 Nc6 (9.Bf4) +/=

1. «»

[C43-f4*] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (6.0-0 0-0 7.c4) Drewitt Retort (7...Bxe5) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.c4 Bxe5 8.dxe5 Nc6 9.f4?! (Steiner) =/+

1. «»

[C43-g4*] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (6.0-0 0-0 7.c4) Drewitt Retort (7...Bxe5) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.c4 Bxe5 8.dxe5 Nc6 9.cxd5 (Blacke) Qxd5 (10.Qf3) +/=

1. «»

[C43-h4*] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (6.0-0 0-0 7.c4) Drewitt Retort (7...Bxe5) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.c4 Bxe5 8.dxe5 Nc6 9.cxd5 (Blacke) Qxd5 10.Qc2 +/=

1. «»

[C43-i4*] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (6.0-0 0-0 7.c4) Steinberg-Piesina System 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.c4 Bxe5 8.dxe5 Nc6 9.cxd5 (Blacke) Qxd5 10.Qc2 Nb4 11.Bxe4 Nxc2 12.Bxd5 +/=

1. «»

[C43-j4*] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (6.0-0 0-0 7.c4) Steinberg-Piesina System 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.c4 Bxe5 8.dxe5 Nc6 9.cxd5 (Blacke) Qxd5 10.Qc2 Nb4 11.Bxe4 Nxc2 12.Bxd5 Bf5 13.g4 Bxg4 (14.Nc3 (Razuvaev))+(14.Bf4 (Romanishin)) +/=

1. «»

[C43-k4*] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (6.0-0 0-0 7.c4) Steinberg-Piesina System 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.c4 Bxe5 8.dxe5 Nc6 9.cxd5 (Blacke) Qxd5 10.Qc2 Nb4 11.Bxe4 Nxc2 12.Bxd5 Bf5 13.g4 Bxg4 14.Be4 Nxa1 +/=

1. «»

[C43-l4*] - PD: Petrov's defence Modern (Steinitz) Attack Petrov-Jaenisch variation, Main Line (6.0-0 0-0 7.c4) Steinberg-Piesina System 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.0-0 0-0 7.c4 Bxe5 8.dxe5 Nc6 9.cxd5 (Blacke) Qxd5 10.Qc2 Nb4 11.Bxe4 Nxc2 12.Bxd5 Bf5 13.g4 Bxg4 14.Be4 Nxa1 15.Nc3 +/=

1. «»

[C43-m4*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! +/=

1. «»

[C43-n4*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Zaitsev Gambit (6.Nxf7) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxf7!? =

1. «Smerdon, David (2173) - Solomon, S. (2435) C43 (38) 1-0 Zone 3.2b (Oceanic) Gold Coast AUS (3), 1999»

[C43-o4*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Kremenietsky Retort (6.Nc3) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nc3 +/=

1. «»

[C43-p4*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Kremenietsky Retort (6.Nc3) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nc3 Nxe5 +/=

1. «»

[C43-q4*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Kohler Retort (6.0-0) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.0-0 +/=

1. «»

[C43-r4*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Kohler Retort (6.0-0) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.0-0 Nxe5 +/=

1. «»

[C43-s4*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Kohler Retort (6.0-0) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.0-0 Nxe5 7.dxe5 =/unclear

1. «»

[C43-t4*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Kohler Retort (6.0-0) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.0-0 Nxe5 7.dxe5 Nc5 =

1. «»

[C43-u4*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Kohler Retort (6.0-0) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.0-0 Nxe5 7.dxe5 Nc5 8.Be2 (Konstantinopolsky) =

1. «»

[C43-v4*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Sjoberg Retort (6.Qe2) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Qe2 +/=

1. «»

[C43-w4*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Sjoberg Retort (6.Qe2) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Qe2 Qe7 (Larsen (Svensson)) +/=

1. «»

[C43-x4*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Sjoberg Retort (6.Qe2) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Qe2 Nxe5 (Larsen (Rogoff)) +/=

1. «»

[C43-y4*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Sjoberg Retort (6.Qe2) Unzincker-Rogoff System 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Qe2 Nxe5 7.Bxe4 dxe4 8.Qxe4 +/=

1. «»

[C43-z4*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Sjoberg Retort (6.Qe2) Unzincker-Rogoff System 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Qe2 Nxe5 7.Bxe4 dxe4 8.Qxe4 Be6 (9.dxe5) +/=

1. «»

[C43-a5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Sjoberg Retort (6.Qe2) Unzincker-Rogoff System 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Qe2 Nxe5 7.Bxe4 dxe4 8.Qxe4 Be6 9.Qxe5 +/=

1. «»

[C43-b5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Sjoberg Retort (6.Qe2) Unzincker-Rogoff System 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Qe2 Nxe5 7.Bxe4 dxe4 8.Qxe4 Be6 9.Qxe5 Qd7 (Rogoff) =/unclear

1. «Pommerel, Wim H (2241) - Monteban, Martijn (2200) C43 (45) 0-1 KE07 NBC Email, 2004»

2. «Kristoffel, Nikolai N - Schreiber, Kurt (2370) C43 (27) 1-0 ICCF World Cup3 Final, corr, 1981»

[C43-c5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Sveshnikov (Stoltz) Retort (6.Nxd7) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 (7.Qe2) +/=

1. «»

[C43-d5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Sveshnikov (Stoltz) Retort (6.Nxd7) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 (Qf6?!) +/=

1. «»

[C43-e5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Hennings Retort (7...Be7) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Be7 (8.c4) +/=

1. «»

[C43-f5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Hennings Retort (7...Be7) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Be7 8.c4 Nf6 (9.Nc3) +/=

1. «»

[C43-g5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Ristic Retort (7...Bd6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Bd6 (8.Qh5?!) =/unclear

1. «»

[C43-h5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Ristic Retort (7...Bd6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Bd6 8.Nc3 (Kveinys) +/=

1. «Nataf, Igor-Alexandre (2553) - Huzman, Alexander (2588) C43 (23) 1/2-1/2 Montreal International (5) Montreal, Canada, 2004»

2. «Kamsky, Gata (2770) - Karpov, Anatoly (2770) C43 (29) 0-1 FIDE-WCh (Elista) (6), Elista, 1996»

[C43-i5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Kveinys-Giertz System (10.Qh5) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Bd6 8.Nc3 (Kveinys) Nxc3 9.bxc3 0-0 10.Qh5 +/=

1. «»

[C43-j5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Kveinys-Giertz System (10.Qh5) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Bd6 8.Nc3 (Kveinys) Nxc3 9.bxc3 0-0 10.Qh5 f5 11.Re1! +/=

1. «Garcia, Gild (2461) - Krush, Irina (2459) C43 (30) 0-1 Montreal International B (3), 2004»

[C43-k5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Ristic Retort (7...Bd6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Bd6 8.c4 (Radulov) (0-0) =/unclear

1. «»

[C43-l5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Ristic Retort (7...Bd6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Bd6 8.c4 (Radulov) Qh4 =/unclear

1. «»

[C43-m5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Ristic Retort (7...Bd6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Bd6 8.c4 (Radulov) c6 (9.Nc3) =/unclear

1. «»

[C43-n5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Short-Hubner System (8.c4 c6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Bd6 8.c4 c6 (9.Nc3) =/unclear

1. «»

[C43-o5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Short-Hubner System (8.c4 c6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Bd6 8.c4 c6 9.cxd5 cxd5 10.Qh5 (0-0) =/unclear

1. «»

[C43-p5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Short-Hubner System (8.c4 c6) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Bd6 8.c4 c6 9.cxd5 cxd5 10.Qh5 0-0 11.Qxd5 (Ivanchuck) Bc6 12.Qh5 =/unclear

1. «Macieja, Bartlomiej (2592) - Rozentalis, Eduard (2676) C43 (34) 0-1 US Open, 1999»

[C43-q5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (7.0-0 Qh4) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 +/=

1. «»

[C43-r5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (7.0-0 Qh4) Grabczewski Retort (8.Qe1) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.Qe1?! =

1. «»

[C43-s5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (7.0-0 Qh4) Rychkov Retort (8.Bxe4) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.Bxe4 =

1. «»

[C43-t5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (7.0-0 Qh4) Monakov Retort (8.Nd2) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.Nd2 =

1. «»

[C43-u5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (7.0-0 Qh4) Pavicic Retort (8.Nc3) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.Nc3 +/=

1. «»

[C43-v5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (7.0-0 Qh4) Livshits Retort (8.g3) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.g3 +/=

1. «»

[C43-w5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (7.0-0 Qh4 8.c4) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.c4! (QL: c4-d5 (Queen Lever)) +/=

1. «»

[C43-x5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (7.0-0 Qh4 8.c4) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.c4! (QL: c4-d5 (Queen Lever)) 0-0-0 +/=

1. «»

[C43-y5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (7.0-0 Qh4 8.c4) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.c4! (QL: c4-d5 (Queen Lever)) 0-0-0 9.c5 +/=

1. «»

[C43-z5*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (7.0-0 Qh4 8.c4 0-0-0) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.c4! (QL: c4-d5 (Queen Lever)) 0-0-0 9.c5 g6 (Hubner) (10.Nc3) +/=

1. «»

[C43-a6*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (8.c4 0-0-0 9.c5 g5) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.c4! (QL: c4-d5 (Queen Lever)) 0-0-0 9.c5 g5 +/=

1. «»

[C43-b6*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (8.c4 0-0-0 9.c5 g5) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.c4! (QL: c4-d5 (Queen Lever)) 0-0-0 9.c5 g5 10.f3!? (Schmittdiel) +/=

1. «»

[C43-c6*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (9.c5 g5 10.Nc3) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.c4! (QL: c4-d5 (Queen Lever)) 0-0-0 9.c5 g5 10.Nc3 +/=

1. «»

[C43-d6*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (9.c5 g5 10.Nc3 Bg7) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.c4! (QL: c4-d5 (Queen Lever)) 0-0-0 9.c5 g5 10.Nc3 Bg7 +/=

1. «»

[C43-e6*] - PD: Petrov's defence Modern (Steinitz) Attack Sveshnikov-Makarichev variation, Main Line (10.Nc3 Bg7 11.Ne2) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.c4! (QL: c4-d5 (Queen Lever)) 0-0-0 9.c5 g5 10.Nc3 Bg7 11.Ne2 +/=

1. «»

[C43-f6*] - PD: Petrov's defence Modern (Steinitz) Attack Zapata-Chow System (11.g3) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.c4! (QL: c4-d5 (Queen Lever)) 0-0-0 9.c5 g5 10.Nc3 Bg7 11.g3! +/=

1. «»

[C43-g6*] - PD: Petrov's defence Modern (Steinitz) Attack Zapata-Chow System (11.g3) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.c4! (QL: c4-d5 (Queen Lever)) 0-0-0 9.c5 g5 10.Nc3 Bg7 11.g3! Qh3 12.Nxe4 dxe4 13.Bxe4 +/=

1. «»

[C43-h6*] - PD: Petrov's defence Modern (Steinitz) Attack Zapata-Chow System (11.g3) 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7! 6.Nxd7 Bxd7 7.0-0 Qh4 8.c4! (QL: c4-d5 (Queen Lever)) 0-0-0 9.c5 g5 10.Nc3 Bg7 11.g3! Qh3 12.Nxe4 dxe4 13.Bxe4 Bb5 14.Bg2 +/=

1. «»

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