ECO B58 · Sicilian Defense

Sicilian Defense: Boleslavsky Variation, Louma Variation

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e5 7. Nxc6

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

7… bxc6+0.22

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

Analyze this position

In the Sicilian Defense: Boleslavsky Variation, Louma Variation (B58), reached after 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e5 7. Nxc6, Stockfish 18 recommends 7… bxc6 for Black. The position is roughly equal (+0.22).

Top engine moves

  1. +0.227… bxc6 8. O-O Be7 9. f4 exf4 10. Bxf4 O-O 11. Kh1 Be6 12. Qd3
  2. +3.217… Qb6 8. Be3 Qxb2 9. Nb5 bxc6 10. Rb1 Qxb1 11. Qxb1 cxb5 12. Bxb5+
  3. +4.457… Qc7 8. Nb4 Qa5 9. Nbd5 Nxe4 10. O-O Nxc3 11. bxc3 Be7 12. Bb5+

Frequently asked questions

What is the best move in the Sicilian Defense: Boleslavsky Variation, Louma Variation?
After 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e5 7. Nxc6, Stockfish 18 at depth 18 recommends 7… bxc6 for Black, continuing 8. O-O Be7 9. f4 exf4 10. Bxf4 O-O 11. Kh1 Be6 12. Qd3. The position is roughly equal (+0.22). The next best moves are 7… Qb6 (+3.21) and 7… Qc7 (+4.45).
Is the Sicilian Defense: Boleslavsky Variation, Louma Variation a good opening?
Stockfish rates the position at +0.22: 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: Boleslavsky Variation, Louma Variation?
B58. 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+).