ECO B52 · Sicilian Defense

Sicilian Defense: Moscow Variation, Haag Gambit

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. c3 Nf6 7. d4

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

7… Nxe4+0.14

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

Analyze this position

In the Sicilian Defense: Moscow Variation, Haag Gambit (B52), reached after 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. c3 Nf6 7. d4, Stockfish 18 recommends 7… Nxe4 for Black. The position is roughly equal (+0.14).

Top engine moves

  1. +0.147… Nxe4 8. d5 Nd8 9. Re1 f5 10. Bf4 e6 11. c4 e5 12. Bxe5
  2. +0.427… cxd4 8. cxd4 d5 9. e5 Ng8 10. h4 e6 11. Nc3 Bb4 12. Ne2
  3. +0.517… d5 8. e5 Ne4 9. Ne1 cxd4 10. cxd4 h6 11. f3 Ng5 12. Be3

Frequently asked questions

What is the best move in the Sicilian Defense: Moscow Variation, Haag Gambit?
After 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. c3 Nf6 7. d4, Stockfish 18 at depth 18 recommends 7… Nxe4 for Black, continuing 8. d5 Nd8 9. Re1 f5 10. Bf4 e6 11. c4 e5 12. Bxe5. The position is roughly equal (+0.14). The next best moves are 7… cxd4 (+0.42) and 7… d5 (+0.51).
Is the Sicilian Defense: Moscow Variation, Haag Gambit a good opening?
Stockfish rates the position at +0.14: 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, Haag Gambit?
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+).