ECO C00 · French Defense

French Defense: Diemer-Duhm Gambit Accepted

1. e4 e6 2. d4 d5 3. c4 dxe4

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

4. Nc3−0.72

Black is slightly better. Stockfish 18, depth 18.

Analyze this position

In the French Defense: Diemer-Duhm Gambit Accepted (C00), reached after 1. e4 e6 2. d4 d5 3. c4 dxe4, Stockfish 18 recommends 4. Nc3 for White. Black is slightly better (−0.72).

Top engine moves

  1. −0.724. Nc3 Nf6 5. Nge2 Nc6 6. Be3 Ng4 7. Nxe4 Nxe3 8. fxe3 Qh4+
  2. −0.734. Be3 Nh6 5. Nc3 Nf5 6. Qd2 Bb4 7. O-O-O Nxe3 8. Qxe3 Bxc3
  3. −0.924. Ne2 f5 5. Nbc3 Nf6 6. Be3 Nc6 7. c5 Be7 8. Nf4 O-O

Frequently asked questions

What is the best move in the French Defense: Diemer-Duhm Gambit Accepted?
After 1. e4 e6 2. d4 d5 3. c4 dxe4, Stockfish 18 at depth 18 recommends 4. Nc3 for White, continuing Nf6 5. Nge2 Nc6 6. Be3 Ng4 7. Nxe4 Nxe3 8. fxe3 Qh4+. Black is slightly better (−0.72). The next best moves are 4. Be3 (−0.73) and 4. Ne2 (−0.92).
Is the French Defense: Diemer-Duhm Gambit Accepted a good opening?
Stockfish rates the position at −0.72: black 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 French Defense: Diemer-Duhm Gambit Accepted?
C00. ECO codes classify chess openings from A00 to E99; C is the volume for open games and the French Defense.

Opening names from the Lichess opening book (CC0). Pieces by Colin M.L. Burnett (GPLv2+).