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ECO B66

ECO B00–B99 — Semi-Open Games other than the French: 1.e4 answered by the Sicilian, Caro-Kann, Scandinavian, Alekhine, Pirc and more.

1 named opening lines are classified under ECO code B66.

Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations — 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6