ECO B51

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

3 named opening lines are classified under ECO code B51.

• Sicilian Defense: Moscow Variation — 1.e4 c5 2.Nf3 d6 3.Bb5+
• Sicilian Defense: Moscow Variation, Dorfman Gambit — 1.e4 c5 2.Nf3 d6 3.Bb5+ Nc6 4.O-O Bd7 5.Qe2 g6 6.e5
• Sicilian Defense: Moscow Variation, Moscow Gambit — 1.e4 c5 2.Nf3 d6 3.Bb5+ Nc6 4.O-O Bd7 5.c3 Nf6 6.Re1 a6 7.Bxc6 Bxc6 8.d4 Bxe4 9.Bg5