ECO D00 · Blackmar-Diemer Gambit Declined

Blackmar-Diemer Gambit Declined: Weinsbach Defense, Pfrang Gambit

1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 e6 5. fxe4

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

5… a6+0.50

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Blackmar-Diemer Gambit Declined: Weinsbach Defense, Pfrang Gambit (D00), reached after 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 e6 5. fxe4, Stockfish 18 recommends 5… a6 for Black. White is slightly better (+0.50).

Top engine moves

  1. +0.505… a6 6. Nf3 c5 7. d5 exd5 8. Nxd5 Be7 9. Bf4 Nxd5 10. exd5
  2. +0.555… Bb4 6. a3 Bxc3+ 7. bxc3 Nxe4 8. Qg4 Nf6 9. Qxg7 Rg8 10. Qh6
  3. +0.635… c5 6. d5 a6 7. Bf4 b5 8. Nf3 c4 9. dxe6 Qxd1+ 10. Rxd1

Frequently asked questions

What is the best move in the Blackmar-Diemer Gambit Declined: Weinsbach Defense, Pfrang Gambit?
After 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 e6 5. fxe4, Stockfish 18 at depth 18 recommends 5… a6 for Black, continuing 6. Nf3 c5 7. d5 exd5 8. Nxd5 Be7 9. Bf4 Nxd5 10. exd5. White is slightly better (+0.50). The next best moves are 5… Bb4 (+0.55) and 5… c5 (+0.63).
Is the Blackmar-Diemer Gambit Declined: Weinsbach Defense, Pfrang Gambit a good opening?
Stockfish rates the position at +0.50: 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 Blackmar-Diemer Gambit Declined: Weinsbach Defense, Pfrang Gambit?
D00. ECO codes classify chess openings from A00 to E99; D is the volume for closed and semi-closed games.

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