ECO B03 · Alekhine Defense

Alekhine Defense: Four Pawns Attack, Main Line

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3

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

7… Bf5+0.62

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Alekhine Defense: Four Pawns Attack, Main Line (B03), reached after 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3, Stockfish 18 recommends 7… Bf5 for Black. White is slightly better (+0.62).

Top engine moves

  1. +0.627… Bf5 8. Nc3 e6 9. Be2 Na5 10. Nf3 Bb4 11. c5 Nd5 12. Bd2
  2. +0.897… f6 8. Nc3 fxe5 9. d5 Nd4 10. Nf3 Bg4 11. Be2 Nxe2 12. Qxe2
  3. +1.107… a6 8. Nc3 Bf5 9. Nf3 e6 10. d5 Na5 11. Bxb6 cxb6 12. Bd3

Frequently asked questions

What is the best move in the Alekhine Defense: Four Pawns Attack, Main Line?
After 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3, Stockfish 18 at depth 18 recommends 7… Bf5 for Black, continuing 8. Nc3 e6 9. Be2 Na5 10. Nf3 Bb4 11. c5 Nd5 12. Bd2. White is slightly better (+0.62). The next best moves are 7… f6 (+0.89) and 7… a6 (+1.10).
Is the Alekhine Defense: Four Pawns Attack, Main Line a good opening?
Stockfish rates the position at +0.62: 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 Alekhine Defense: Four Pawns Attack, Main Line?
B03. 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+).