B50 — Sicilian Defense: Modern Variations

Semi-Open Games incl. Sicilian (B00–B99)

1. e4 c5 2. Nf3 d6

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ECO B50 covers Sicilian Defense: Modern Variations and related lines (Sicilian Defense: Modern Variations, Sicilian Defense, Sicilian Defense: Delayed Alapin Variation, with d6, Sicilian Defense: Kopec System). Main line 1. e4 c5 2. Nf3 d6 with variations, statistics, and the best responses.

12 lines under B50
Sicilian Defense
1. e4 c5 2. Nf3 d6 3. d4
Sicilian Defense: Kopec System
1. e4 c5 2. Nf3 d6 3. Bd3
Sicilian Defense
1. e4 c5 2. Nf3 d6 3. d4 cxd4
Sicilian Defense: Kotov Gambit
1. e4 c5 2. Nf3 d6 3. g3 b5
Sicilian Defense: Modern Variations, Tartakower
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. c3
Sicilian Defense: Modern Variations, Anti-Qxd4 Move Order Accepted
1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. dxc5 Nxe4
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, 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
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