ECO B03

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

15 named opening lines are classified under ECO code B03.

• Alekhine Defense: Balogh Variation — 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Bc4
• Alekhine Defense: Exchange Variation — 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6
• Alekhine Defense: Exchange Variation, Karpov Variation — 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6 cxd6 6.Nc3 g6 7.h3 Bg7 8.Nf3 O-O 9.Be2 Nc6 10.O-O Bf5 11.Bf4
• Alekhine Defense: Exchange Variation, Voronezh Variation — 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6 cxd6 6.Nc3 g6 7.Be3 Bg7 8.Rc1 O-O 9.b3
• Alekhine Defense: Four Pawns Attack — 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4
• Alekhine Defense: Four Pawns Attack, Cambridge Gambit — 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 g5
• Alekhine Defense: Four Pawns Attack, Fianchetto Variation — 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 g6
• Alekhine Defense: Four Pawns Attack, Ilyin-Zhenevsky Variation — 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Nc6 7.Nf3 Bg4 8.e6 fxe6 9.c5
• Alekhine Defense: Four Pawns Attack, Korchnoi Variation — 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Bf5 7.Nc3 e6 8.Nf3 Be7 9.Be2 O-O 10.O-O f6
• Alekhine Defense: Four Pawns Attack, Main Line — 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Nc6 7.Be3
• Alekhine Defense: Four Pawns Attack, Tartakower Variation — 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Nc6 7.Be3 Bf5 8.Nc3 e6 9.Nf3 Qd7 10.Be2 O-O-O 11.O-O Be7
• Alekhine Defense: Four Pawns Attack, Trifunovic Variation — 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 Bf5
• Alekhine Defense: Hunt Variation — 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.c5
• Alekhine Defense: Modern Variation, Alekhine Gambit — 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.Nf3 Bg4 6.Be2
• Alekhine Defense: O'Sullivan Gambit — 1.e4 Nf6 2.e5 Nd5 3.d4 b5