ECO B21 · Sicilian Defense

Sicilian Defense: Smith-Morra Gambit Accepted, Sozin Formation

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Bc4 e6 6. Nf3 d6 7. O-O a6 8. Qe2 b5

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White to move. The arrow shows Stockfish’s best move.
Best move

9. Bb3+0.39

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Sicilian Defense: Smith-Morra Gambit Accepted, Sozin Formation (B21), reached after 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Bc4 e6 6. Nf3 d6 7. O-O a6 8. Qe2 b5, Stockfish 18 recommends 9. Bb3 for White. White is slightly better (+0.39).

Top engine moves

  1. +0.399. Bb3 Nge7 10. Rd1 Ng6 11. h4 h5 12. a4 b4 13. Nd5 exd5
  2. +0.149. Bd3 Nf6 10. Rd1 Bd7 11. Bf4 Be7 12. e5 Nxe5 13. Nxe5 dxe5
  3. −0.459. Bd5 exd5 10. exd5+ Nce7 11. Bf4 Nf6 12. Rfe1 Bg4 13. h3 Bxf3

Frequently asked questions

What is the best move in the Sicilian Defense: Smith-Morra Gambit Accepted, Sozin Formation?
After 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Bc4 e6 6. Nf3 d6 7. O-O a6 8. Qe2 b5, Stockfish 18 at depth 18 recommends 9. Bb3 for White, continuing Nge7 10. Rd1 Ng6 11. h4 h5 12. a4 b4 13. Nd5 exd5. White is slightly better (+0.39). The next best moves are 9. Bd3 (+0.14) and 9. Bd5 (−0.45).
Is the Sicilian Defense: Smith-Morra Gambit Accepted, Sozin Formation a good opening?
Stockfish rates the position at +0.39: white is slightly better. Evaluations this early in the game are small, so practical results depend far more on knowing the plans and typical structures than on the engine's number.
What is the ECO code of the Sicilian Defense: Smith-Morra Gambit Accepted, Sozin Formation?
B21. ECO codes classify chess openings from A00 to E99; B is the volume for semi-open games (other than the French).

Opening names from the Lichess opening book (CC0). Pieces by Colin M.L. Burnett (GPLv2+).