OPENINGS THEORY

- ECBX: ECO CODES BASE -
(ECB Classification)


- B90 ii - b*** to m6*



[B90-b***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack (6.a4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) Nc6 (Alatorsev)
(see also: B71, B73, B74, B80,
B82, B84, B85, B88, B92, B93)+
(7.Nb3 (see: B84, B85, B93)) =


1. «»
«»


[B90-c***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack (6.a4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) Nc6 (Alatorsev)
7.g3 (Poschel) (see also: B70,
B80) =/unclear


1. «»
«»


[B90-d***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack (6.a4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) Nc6 (Alatorsev)
7.Be3 (Sampaolesi) (see also: B28,
B73, B74, B80, B85, B93)+(e6 (see:
B83, B84, B85, B89)) +/=


1. «»
«»


[B90-e***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack (6.a4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) Nc6 (Alatorsev)
7.f4 (Comford) (see also: B74,
B82, B85, B93) =/unclear


1. «»
«»


[B90-f***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack (6.a4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) Nc6 (Alatorsev)
7.Bc4 (Ciric) (see also: B86,
B88) =


1. «»
«»


[B90-g***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack (6.a4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) Nc6 (Alatorsev)
7.Bc4 (Bastrikov) (see also: B71,
B73, B74, B84, B85, B92, B93)+(e6
(see: B80, b83, B84, B85)) =


1. «»
«»


[B90-h***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack (6.a4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) Nc6 (Alatorsev)
7.Bc4 (Bastrikov) e5 (see also:
B71, B73, B74, B93) =


1. «»
«»


[B90-i***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack (6.a4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
(see also: B91, B92) =


1. «»
«»


[B90-j***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack (6.a4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nde2 (see also: B91) +/=


1. «»
«»


[B90-k***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack (6.a4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nb3?! (see also: B92) =/+


1. «»
«»


[B90-l***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack (6.a4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nb3?! Be7 (see also: B92) =/+


1. «»
«»


[B90-m***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack (6.a4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nb3?! Be6 (see also: B92) =/+


1. «»
«»


[B90-n***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack (6.a4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nb3?! Be6 8.Bg5 (see also:
B92) =/+


1. «»
«»


[B90-o***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack (6.a4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nb3?! Be6 8.Be2 (see also:
B92) =/+


1. «»
«»
2. «»
«»


[B90-p***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) (see also: B92) +/=


1. «»
«»


[B90-q***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Baron Retort (7...Nc6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Nc6 (FNBF: (Four Knights
Basic Formation))+(see also: B45)
=


1. «»
«»


[B90-r***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Danner Retort (7...Be6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Be6 =


1. «»
«»


[B90-s***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Cotta Retort (7...h6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) h6 (8.Be2 (see: B92))
+/=


1. «»
«»


[B90-t***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Cotta Retort (7...h6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) h6 8.Bc4 (Pinto Palva)
+/=


1. «»
«»


[B90-u***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Gadalinski Retort (7...Be7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Be7 +/=


1. «»
«»


[B90-v***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Gadalinski Retort (7...Be7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Be7 8.Bc4 =


1. «»
«»


[B90-w***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 +/=


1. «»
«»


[B90-x***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be2 =/+


1. «»
«»


[B90-y***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Bg5! +/=


1. «»
«»


[B90-z***] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Bg5! Nbd7 +/=


1. «»
«»


[B90-a4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Bg5! Nbd7
9.Nd2 +/=


1. «»
«»
2. «»
«»


[B90-b4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Bg5! Nbd7
9.Nd2 h6 +/=


1. «Hansen, SB (2460) - Nakamura, Hikaru (2660) B90 (34) 0-1, Malmö 2005»
«xANGA: xRGMG: Europe Echecs: Tribune de Genève: eee Hansen, SB (2460) - Nakamura, Hikaru (2660) B90 (34) 0-1, Malmö 2005 - Analyzed by Georges Bertola»


[B90-c4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 (Nbd7)+/=


1. «»
«»


[B90-d4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 h6 +/=


1. «»
«»


[B90-e4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 Be6 +/=


1. «»
«»


[B90-f4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 b6?! +/=


1. «»
«»


[B90-g4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 Be7 +/=


1. «»
«»


[B90-h4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 Be7 9.Be2
+/=


1. «»
«»


[B90-i4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 Be7 9.a5
(Be6) +/=


1. «»
«»


[B90-j4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 Be7 9.a5
Nbd7 +/=


1. «»
«»


[B90-k4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 Be7 9.a5
0-0 =


1. «»
«»


[B90-l4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 Be7 9.a5
0-0 10.Be2 (h6) =


1. «»
«»


[B90-m4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 Be7 9.a5
0-0 10.Be2 Qc6 =/unclear


1. «»
«»


[B90-n4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 Be7 9.a5
0-0 10.Be2 Be6 +/=


1. «»
«»


[B90-o4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 Be7 9.a5
0-0 10.Be2 Nc6 11.Bb6 Qd7 +/=


1. «»
«»


[B90-p4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 Be7 9.a5
0-0 10.Be2 Nbd7 =


1. «»
«»


[B90-q4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum)) e5 (Lubienski)
7.Nf3 (TNBF: (Three Knights Basic
formation)) Qc7 8.Be3 Be7 9.a5
0-0 10.Be2 Nbd7 11.0-0 b5 =


1. «»
«»


[B90-r4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Factor Attack, Main Line:
(6.a4 e5 7.Nf3)
Colon Romano Retort (7...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.a4 (BWS: (Black
Wide Spectrum) e6 (Fine) (see
also: B42, B80, B83, B84,
B85, b86, B88, B95) =/unclear


1. «»
«»


[B90-s4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivenko Attack (6.f3)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum))+(see also: B67,
B70, B75, B76, B77, B78, B80, B84,
B86, B87, B92, B95) =/unclear


1. «»
«»


[B90-t4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivenko Attack (6.f3)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum))+(see also: B67,
B70, B75, B76, B77, B78, B80, B84,
B86, B87, B92, B95) e6 =/unclear


1. «»
«»


[B90-u4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivenko Attack (6.f3)
Badura Retort (6...Bd7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e6 7.Be3
=/unclear


1. «»
«»


[B90-v4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivenko Attack (6.f3)
Badura Retort (6...Bd7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e6 7.Be3 b5
8.g4 =/unclear


1. «»
«»


[B90-w4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivenko Attack (6.f3)
Badura Retort (6...Bd7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e6 7.Be3 b5
8.g4 Nfd7 9.Qd2 =/unclear


1. «Almasi, Zoltan (2679) - Berkes, Ferenc (2578) B90 (29) 1-0, Hongaria 2003»
«xANGA: xRGMG: Europe echecs: Tribune de Genève: eee Almasi, Zoltan (2679) - Berkes, Ferenc (2578) B90 (29) 1-0, Hongaria 2003 - Analyzed by Georges Bertola»


[B90-x4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivenko Attack (6.f3)
Badura Retort (6...Bd7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e6 7.Be3 b5
8.g4 Nfd7 9.Qd2 Bb7 10.0-0-0
=/unclear


1. «Anand, Viswanathan (2755) - Ponomariov, Ruslan (2743) B90 (38) 1-0, Duel of the World Champions, Mainz, Germany (4), 2002 »
«xANGA: xRGMG: Chessninja.com: eee Anand, Viswanathan (2755) - Ponomariov, Ruslan (2743) B90 (38) 1-0, Duel of the World Champions, Mainz, Germany (4), 2002 - Analyzed by Viswanathan Anand»


[B90-y4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivenko Attack (6.f3)
Badura Retort (6...Bd7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e6 7.Be3 b5
8.Qd2 (Nfd7) =/unclear


1. «Bogner, Sebastian (2361) - Kyndel Pedersen, Christian (2364) B90 (36) 0-1, Grundfos Young Masters (2) Århus, 2005»
«xANGA: www.Nordre.dk: eee Bogner, Sebastian (2361) - Kyndel Pedersen, Christian (2364) B90 (36) 0-1, Grundfos Young Masters (2) Århus, 2005 - Analyzed by Christian Kyndel Pedersen»
2. «Leko, Peter (2751) - Topalov, Veselin (2782) B90 (40) 0-1, FIDE World Championship, San Luis (Arg), 2005»
«xANGA: xRGMG: ChessPro.ru: eee Leko, Peter (2751) - Topalov, Veselin (2782) B90 (40) 0-1, FIDE World Championship, San Luis (Arg), 2005 - Analyzed by GM Sergey Shipov»
3. «Leko, Peter (2751) - Topalov, Veselin (2782) B90 (40) 0-1, FIDE World Championship, San Luis (Arg), 2005»
«xANGA: xRGMG: Chess-Theory.com: eee Leko, Peter (2751) - Topalov, Veselin (2782) B90 (40) 0-1, FIDE World Championship, San Luis (Arg), 2005 - Analyzed by Chess-Theory (021)»


[B90-z4*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Corte Retort (6...Nc6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum))+(see also: B54,
B56, B73, B75, B76, B77, B80,
B89) Nc6 +/=


1. «»
«»


[B90-a5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Sotnikov Retort (6...Qb6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) Qb6 +/=


1. «Acs, Peter (2518) - Polgar, Judit (2735) B90 (33) 0-1, Budapest 2003»
«xANGA: xRGMG: Europe Echecs: Tribune de Genève: eee Acs, Peter (2518) - Polgar, Judit (2735) B90 (33) 0-1, Budapest 2003 - Analyzed by Georges Bertola»


[B90-b5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Sotnikov Retort (6...Qb6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) Qb6 7.g4 +/=


1. «Anand, Viswanathan(2755) - Polgar Judith (2735) B90 (39) 0-1, Cap d'Agues 2003»
«xANGA: xRGMGA: Europe Echecs: Tribune de Genève: eee Anand, Viswanathan (2755) - Polgar Judith (2735) B90 (39) 0-1, Cap d'Agues 2003 - Analyzed by Georges Bertola»


[B90-c5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Sotnikov Retort (6...Qb6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) Qb6 7.Nb3 =


1. «»
«»


[B90-d5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Sotnikov Retort (6...Qb6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) Qb6 7.Nb3 e6 =


1. «»
«»


[B90-e5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Sotnikov Retort (6...Qb6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) Qb6 7.Nb3 e6
8.Qe2 (Komeev) =


1. «»
«»


[B90-f5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Levitas Retort (6...e6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e6 +/= (see also:
B80, B86, B87, B95, C11)


1. «»
«»
2. «»
«»


[B90-g5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Ivanco-Zobel System (6.f3 e5)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 +/=


1. «»
«»


[B90-h5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Ivanco-Zobel System (6.f3 e5)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nbd2 +/=


1. «»
«»


[B90-i5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Ivanco-Zobel System (6.f3 e5)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 +/=


1. «»
«»


[B90-j5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Ivanco-Zobel System (6.f3 e5)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 h5
(Rashkovsky) =


1. «»
«»


[B90-k5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Ivanco-Zobel System (6.f3 e5)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) (see also: B92) +/=


1. «»
«»


[B90-l5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Ivanco-Zobel System (6.f3 e5)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 +/=


1. «»
«»


[B90-m5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Ivanco-Zobel System (6.f3 e5)
Ahmad Retort (8...h5)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 h5 =/unclear


1. «»
«»


[B90-n5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Ivanco-Zobel System (6.f3 e5)
Schmidt Retort (8...Nbd7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 Nbd7 +/=


1. «»
«»


[B90-o5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Ivanco-Zobel System (6.f3 e5)
Pustina Retort (8...Nc6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 Nc6 (see also:
B33, B54, b55) +/=


1. «»
«»


[B90-p5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Ivanco-Zobel System (6.f3 e5)
Chekhov Retort (8...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 Qc7 +/=


1. «»
«»


[B90-q5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Ivanco-Zobel System (6.f3 e5)
Fischer Retort (8...0-0)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 (9.Be2 (see also: B92) +/=


1. «»
«»


[B90-r5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Ivanco-Zobel System (6.f3 e5)
Fischer Retort (8...0-0)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 +/=


1. «»
«»


[B90-s5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (9.Qd2 Be6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
=/unclear


1. «»
«»


[B90-t5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (9.Qd2 Be6)
Goldhamer Retort (10.Be2)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.Be2 (see also: B92) =/unclear


1. «»
«»


[B90-u5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (9.Qd2 Be6)
Watson Retort (10.g4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.g4?! =/+


1. «»
«»


[B90-v5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (9.Qd2 Be6)
Watson Retort (10.g4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.g4?! d5! (Beherensen) =/+


1. «»
«»


[B90-w5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (9.Qd2 Be6)
Watson Retort (10.g4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.g4?! Nbd7 (Shashim) =/+


1. «»
«»


[B90-x5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (9.Qd2 Be6)
Watson Retort (10.g4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.g4?! Nbd7 (Shashim) 11.g5
=/+


1. «»
«»


[B90-y5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Watson Retort (10.g4)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 +/=


1. «»
«»


[B90-z5*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Hoelzl Retort (10...Nc6)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 Nc6?! +/=


1. «»
«»


[B90-a6*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Danner Retort (10...a5)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 a5 +/=


1. «»
«»


[B90-b6*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Danner Retort (10...a5)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 a5 11.a4 +/=


1. «»
«»


[B90-c6*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Danner Retort (10...a5)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 a5 11.Kb1?! =/+


1. «»
«»


[B90-d6*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Danner Retort (10...a5)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 a5 11.Bb5! (Sax) +/=


1. «»
«»


[B90-e6*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Danner Retort (10...a5)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 a5 11.Bb5! (Sax) Nc6 +/=


1. «»
«»


[B90-f6*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Restrepo Retort (10...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 Qc7 (11.Kb1) =/unclear


1. «»
«»


[B90-g6*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Restrepo Retort (10...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 Qc7 11.g4 +/=


1. «»
«»


[B90-h6*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Restrepo Retort (10...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 Qc7 11.g4 b5 +/=


1. «»
«»


[B90-i6*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Restrepo Retort (10...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 Qc7 11.g4 Rc8 +/=


1. «»
«»


[B90-j6*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Restrepo Retort (10...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 Qc7 11.g4 Rc8 12.Qf2
(Kitschke) +/=


1. «»
«»


[B90-k6*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Restrepo Retort (10...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 Qc7 11.g4 Rc8 12.Kb1
(Degenhardt) =/unclear


1. «»
«»


[B90-l6*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Restrepo Retort (10...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 Qc7 11.g4 Rc8 12.g5
(Smagin) +/=


1. «»
«»


[B90-m6*] - SDN: Sicilian defence
Najdorf variation (5...a6)
Ivanco Attack (6.f3)
Byrne-Fischer System (10.0-0-0)
Restrepo Retort (10...Qc7)
1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 a6 (WWS: (White
Wide Spectrum)) 6.f3 (BWS: (Black
Wide Spectrum)) e5 7.Nb3 Be7
(Lombardy) 8.Be3 0-0 9.Qd2 Be6
10.0-0-0 Qc7 11.g4 Rc8 12.g5
(Smagin) Nh5 +/=


1. «»
«»

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