All ECO Codes
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B96
B96
Sicilian Defence
Najdorf Variation, Polugayevsky Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 b5