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ECO B50

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

10 named opening lines are classified under ECO code B50.

Sicilian Defense: Delayed Alapin Variation, Basman-Palatnik Double Gambit — 1.e4 c5 2.Nf3 d6 3.c3 Nf6 4.Be2 Nc6 5.d4 cxd4 6.cxd4 Nxe4 7.d5 Qa5+ 8.Nc3 Nxc3 9.bxc3
Sicilian Defense: Delayed Alapin Variation, Basman-Palatnik Gambit — 1.e4 c5 2.Nf3 d6 3.c3 Nf6 4.Be2 Nc6 5.d4 cxd4 6.cxd4 Nxe4
Sicilian Defense: Delayed Alapin Variation, with d6 — 1.e4 c5 2.Nf3 d6 3.c3
Sicilian Defense: Kopec System — 1.e4 c5 2.Nf3 d6 3.Bd3
Sicilian Defense: Kotov Gambit — 1.e4 c5 2.Nf3 d6 3.g3 b5
Sicilian Defense: Modern Variations — 1.e4 c5 2.Nf3 d6
Sicilian Defense: Modern Variations, Anti-Qxd4 Move Order — 1.e4 c5 2.Nf3 d6 3.d4 Nf6
Sicilian Defense: Modern Variations, Anti-Qxd4 Move Order Accepted — 1.e4 c5 2.Nf3 d6 3.d4 Nf6 4.dxc5 Nxe4
Sicilian Defense: Modern Variations, Tartakower — 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.c3
Sicilian Defense: Wing Gambit, Deferred Variation — 1.e4 c5 2.Nf3 d6 3.b4