ECO B28

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

20 named opening lines are classified under ECO code B28.

• Sicilian Defense: O'Kelly Variation — 1.e4 c5 2.Nf3 a6
• Sicilian Defense: O'Kelly Variation, Aronin System — 1.e4 c5 2.Nf3 a6 3.Be2
• Sicilian Defense: O'Kelly Variation, Kieseritzky System — 1.e4 c5 2.Nf3 a6 3.b3
• Sicilian Defense: O'Kelly Variation, Maróczy Bind — 1.e4 c5 2.Nf3 a6 3.c4
• Sicilian Defense: O'Kelly Variation, Maróczy Bind, Paulsen Line — 1.e4 c5 2.Nf3 a6 3.c4 e6
• Sicilian Defense: O'Kelly Variation, Maróczy Bind, Robatsch Line — 1.e4 c5 2.Nf3 a6 3.c4 d6
• Sicilian Defense: O'Kelly Variation, Normal System — 1.e4 c5 2.Nf3 a6 3.d4
• Sicilian Defense: O'Kelly Variation, Normal System, Cortlever Gambit — 1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.Bc4
• Sicilian Defense: O'Kelly Variation, Normal System, Smith-Morra Line — 1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.c3
• Sicilian Defense: O'Kelly Variation, Normal System, Taimanov Line — 1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.Nxd4 e5
• Sicilian Defense: O'Kelly Variation, Normal System, Zagorovsky Line — 1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.Qxd4
• Sicilian Defense: O'Kelly Variation, Quiet System — 1.e4 c5 2.Nf3 a6 3.d3
• Sicilian Defense: O'Kelly Variation, Réti System — 1.e4 c5 2.Nf3 a6 3.g3
• Sicilian Defense: O'Kelly Variation, Venice System — 1.e4 c5 2.Nf3 a6 3.c3
• Sicilian Defense: O'Kelly Variation, Venice System, Barcza Line — 1.e4 c5 2.Nf3 a6 3.c3 Nf6
• Sicilian Defense: O'Kelly Variation, Venice System, Gambit Line — 1.e4 c5 2.Nf3 a6 3.c3 d5 4.exd5 Nf6
• Sicilian Defense: O'Kelly Variation, Venice System, Ljubojevic Line — 1.e4 c5 2.Nf3 a6 3.c3 b5
• Sicilian Defense: O'Kelly Variation, Venice System, Steiner Line — 1.e4 c5 2.Nf3 a6 3.c3 d6
• Sicilian Defense: O'Kelly Variation, Wing Gambit — 1.e4 c5 2.Nf3 a6 3.b4
• Sicilian Defense: O'Kelly Variation, Yerevan System — 1.e4 c5 2.Nf3 a6 3.Nc3