ECO D00 · Blackmar-Diemer Gambit Accepted

Blackmar-Diemer Gambit Accepted: Ritter Defense

1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 b6

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

6. Ne5+0.85

White is clearly better. Stockfish 18, depth 18.

Analyze this position

In the Blackmar-Diemer Gambit Accepted: Ritter Defense (D00), reached after 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 b6, Stockfish 18 recommends 6. Ne5 for White. White is clearly better (+0.85).

Top engine moves

  1. +0.856. Ne5 a6 7. Bg5 Ra7 8. Be2 c5 9. d5 g6 10. Qd2 Bg7
  2. +0.726. Bg5 e6 7. Ne5 Bb4 8. Bc4 O-O 9. O-O Be7 10. Qd3 Bb7
  3. +0.556. Bc4 e6 7. Ne5 Be7 8. Qf3 c6 9. Be3 O-O 10. O-O Nd5

Frequently asked questions

What is the best move in the Blackmar-Diemer Gambit Accepted: Ritter Defense?
After 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 b6, Stockfish 18 at depth 18 recommends 6. Ne5 for White, continuing a6 7. Bg5 Ra7 8. Be2 c5 9. d5 g6 10. Qd2 Bg7. White is clearly better (+0.85). The next best moves are 6. Bg5 (+0.72) and 6. Bc4 (+0.55).
Is the Blackmar-Diemer Gambit Accepted: Ritter Defense a good opening?
Stockfish rates the position at +0.85: 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 Blackmar-Diemer Gambit Accepted: Ritter 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+).