ECO B52 · Sicilian Defense

Sicilian Defense: Moscow Variation, Sokolsky Variation

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4

abcdefgh87654321
Black to move. The arrow shows Stockfish’s best move.
Best move

5… Nf6+0.29

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

Analyze this position

In the Sicilian Defense: Moscow Variation, Sokolsky Variation (B52), reached after 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4, Stockfish 18 recommends 5… Nf6 for Black. The position is roughly equal (+0.29).

Top engine moves

  1. +0.295… Nf6 6. Nc3 Nc6 7. d4 cxd4 8. Nxd4 Qg4 9. O-O Qxd1 10. Rxd1
  2. +0.305… g6 6. Nc3 Nf6 7. d4 cxd4 8. Nxd4 Bg7 9. f3 Qc7 10. b3
  3. +0.315… Nc6 6. Nc3 Nf6 7. d4 cxd4 8. Nxd4 Qg4 9. O-O Qxd1 10. Rxd1

Frequently asked questions

What is the best move in the Sicilian Defense: Moscow Variation, Sokolsky Variation?
After 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4, Stockfish 18 at depth 18 recommends 5… Nf6 for Black, continuing 6. Nc3 Nc6 7. d4 cxd4 8. Nxd4 Qg4 9. O-O Qxd1 10. Rxd1. The position is roughly equal (+0.29). The next best moves are 5… g6 (+0.30) and 5… Nc6 (+0.31).
Is the Sicilian Defense: Moscow Variation, Sokolsky Variation a good opening?
Stockfish rates the position at +0.29: 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: Moscow Variation, Sokolsky Variation?
B52. 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+).