Chessy
French Defense: Diemer-Duhm Gambit Accepted as Black
After 1.e4 e6 2.d4 d5 3.c4 dxe4, you have accepted the gambit and White is to move. This is a practical opening for Black: the position is a little better for you if you know what to expect, but White gets active play and several natural continuations. The drill below helps you feel the key replies, spot the common mistakes, and learn what to do when White chooses the most popular tries.
Play the French Defense: Diemer-Duhm Gambit Accepted against the engine
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Create a free account →What this position is asking you to solve
This opening is about staying solid after taking the pawn and then meeting White's quick development. You are not trying to win the game on the spot; you are trying to keep the extra pawn, answer White's pressure, and finish development without drifting into trouble. The main lesson is simple: do not panic when White attacks the centre. Keep your structure sensible, and be ready for active piece play rather than passive defence.
The engine's main reply
Stockfish rates this -0.62, a small edge in your favour. That means you are slightly better here. The engine's best move is Nc3, and the listed continuation is Nc3 f5 Nh3 Nf6. In practical terms, that tells you White will usually continue development fast, so your job is to meet it with calm, accurate moves and not let White's initiative grow for free.
What the database says White usually tries
In 185,273 games at this exact position, White wins 44.6%, draws 3.5%, and Black wins 52.0%. The most played continuation is Nc3 with 126,517 games, where White scores 45.1%. Other common tries are d5 with 19,205 games, f3 with 14,480 games, c5 with 4,508 games, Be3 with 3,859 games, and a3 with 3,425 games. So this is a very playable position for Black, but only if you are ready for White's most direct ideas.
The moves to watch for
The known mistake in this position is d5, which loses about 1.1 pawns; better was Nc3. Another inaccurate choice is c5, which loses about 0.5 pawns; better was Nc3. For your drill, that means you should recognise that White's central thrusts are not always the best practical way to continue. If you know the correct response to the main development move, you are already ahead of many opponents.
Results across 185,273 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| Nc3 | 126,517 | 45.1% |
| d5 | 19,205 | 49.5% |
| f3 | 14,480 | 45.7% |
| c5 | 4,508 | 37.4% |
| Be3 | 3,859 | 46.2% |
| a3 | 3,425 | 45.3% |
Frequently asked questions
Is the French Defense: Diemer-Duhm Gambit Accepted good for Black?
Yes, this position is playable for Black. The engine gives -0.62, which is a small edge in your favour, and the database score also shows Black doing well. You still need to meet White's active play accurately.
What is White's most common move here?
Nc3 is the most played continuation, with 126,517 games. It is also the engine's best move. In practice, you should expect White to develop quickly and keep the pressure on the centre.
What should I remember after accepting the gambit?
Remember that you are not just holding onto a pawn, you are also finishing development under pressure. The key engine line starts with Nc3 f5 Nh3 Nf6, so active and sensible piece play matters. If you stay organised, the position is on your side.
Which White moves are mistakes in this position?
d5 is a mistake and c5 is an inaccuracy. Both are worse than Nc3, and the database notes that d5 loses about 1.1 pawns while c5 loses about 0.5 pawns. That makes the drill useful for spotting when White overreaches.
How many games feature the French Defense: Diemer-Duhm Gambit Accepted?
Over 185K Lichess games have reached the French Defense: Diemer-Duhm Gambit Accepted position. White wins 44.6%, Black wins 52.0%, with 3.5% draws — based on real rated games.