Chess opening
Sicilian Defense: Smith-Morra Gambit Declined, Alapin FormationB21
The Sicilian Defense: Smith-Morra Gambit Declined, Alapin Formation is a chess opening classified under ECO code B21. It is reached after the moves:
1. e4 c5 2. d4 cxd4 3. c3 Nf6
Play it vs Stockfish Open in analysis board
Comes from
Related lines in the Sicilian Defense
- Sicilian Defense (B20)
- Sicilian Defense: Amazon Attack (B20)
- Sicilian Defense: Big Clamp Formation (B20)
- Sicilian Defense: Bowdler Attack (B20)
- Sicilian Defense: Brick Variation (B20)
- Sicilian Defense: Czerniak Attack (B20)
- Sicilian Defense: Czerniak Attack, Queen Fianchetto Variation (B20)
- Sicilian Defense: Euwe Attack, Prins Gambit (B20)
Train this opening
LibreChess runs Stockfish in your browser — play the Sicilian Defense against the engine at any strength, get hints, and review your game move by move afterwards. Free, no account needed. You can also add this line to your repertoire and drill it with spaced repetition.