ECO B21 · Sicilian Defense

Sicilian Defense: Smith-Morra Gambit Accepted, Kan Formation

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Nf3 a6

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

6. Bf4−0.09

The position is roughly equal. Stockfish 18, depth 18.

Analyze this position

In the Sicilian Defense: Smith-Morra Gambit Accepted, Kan Formation (B21), reached after 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Nf3 a6, Stockfish 18 recommends 6. Bf4 for White. The position is roughly equal (−0.09).

Top engine moves

  1. −0.096. Bf4 b5 7. Bd3 Bb7 8. O-O Nf6 9. e5 Nd5 10. Nxd5 Bxd5
  2. −0.146. Bd3 d6 7. O-O Be7 8. e5 dxe5 9. Nxe5 Nd7 10. Qa4 Nf6
  3. −0.146. Be2 b5 7. Bf4 Bb7 8. O-O Nf6 9. Nd2 Bb4 10. Bf3 d6

Frequently asked questions

What is the best move in the Sicilian Defense: Smith-Morra Gambit Accepted, Kan Formation?
After 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Nf3 a6, Stockfish 18 at depth 18 recommends 6. Bf4 for White, continuing b5 7. Bd3 Bb7 8. O-O Nf6 9. e5 Nd5 10. Nxd5 Bxd5. The position is roughly equal (−0.09). The next best moves are 6. Bd3 (−0.14) and 6. Be2 (−0.14).
Is the Sicilian Defense: Smith-Morra Gambit Accepted, Kan Formation a good opening?
Stockfish rates the position at −0.09: the position is roughly equal. 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, Kan 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+).