ECO B05 · Alekhine Defense

Alekhine Defense: Modern Variation, Flohr Variation

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 c6

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

6. c4+0.81

White is clearly better. Stockfish 18, depth 18.

Analyze this position

In the Alekhine Defense: Modern Variation, Flohr Variation (B05), reached after 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 c6, Stockfish 18 recommends 6. c4 for White. White is clearly better (+0.81).

Top engine moves

  1. +0.816. c4 Nb6 7. Ng5 Bxe2 8. Qxe2 dxe5 9. dxe5 e6 10. O-O Be7
  2. +0.816. Ng5 Bxe2 7. Qxe2 dxe5 8. dxe5 e6 9. O-O Nd7 10. c4 N5b6
  3. +0.656. exd6 exd6 7. c4 Nb6 8. O-O Be7 9. h3 Bh5 10. Re1 O-O

Frequently asked questions

What is the best move in the Alekhine Defense: Modern Variation, Flohr Variation?
After 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 c6, Stockfish 18 at depth 18 recommends 6. c4 for White, continuing Nb6 7. Ng5 Bxe2 8. Qxe2 dxe5 9. dxe5 e6 10. O-O Be7. White is clearly better (+0.81). The next best moves are 6. Ng5 (+0.81) and 6. exd6 (+0.65).
Is the Alekhine Defense: Modern Variation, Flohr Variation a good opening?
Stockfish rates the position at +0.81: white is clearly 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: Modern Variation, Flohr Variation?
B05. 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+).