ECO D00 · Blackmar-Diemer Gambit Declined

Blackmar-Diemer Gambit Declined: Gedult Defense

1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 a6

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

5. fxe4+0.52

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Blackmar-Diemer Gambit Declined: Gedult Defense (D00), reached after 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 a6, Stockfish 18 recommends 5. fxe4 for White. White is slightly better (+0.52).

Top engine moves

  1. +0.525. fxe4 Bg4 6. Be2 Bxe2 7. Ngxe2 e5 8. Bg5 Qd6 9. dxe5 Qxe5
  2. 0.005. Nxe4 e5 6. dxe5 Qxd1+ 7. Kxd1 Nxe4 8. fxe4 Nc6 9. Nf3 Bg4
  3. −0.275. Bg5 h6 6. Bxf6 exf6 7. fxe4 c5 8. dxc5 Qxd1+ 9. Rxd1 Bxc5

Frequently asked questions

What is the best move in the Blackmar-Diemer Gambit Declined: Gedult Defense?
After 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 a6, Stockfish 18 at depth 18 recommends 5. fxe4 for White, continuing Bg4 6. Be2 Bxe2 7. Ngxe2 e5 8. Bg5 Qd6 9. dxe5 Qxe5. White is slightly better (+0.52). The next best moves are 5. Nxe4 (0.00) and 5. Bg5 (−0.27).
Is the Blackmar-Diemer Gambit Declined: Gedult Defense a good opening?
Stockfish rates the position at +0.52: 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: Gedult Defense?
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+).