Blackmar-Diemer Gambit Accepted: Ritter Defense
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Statistics from Lichess
10,335 games: White 54.3% / Draw 3.2% / Black 42.5%
| Next move | Games | White / Draw / BlackW / D / B |
|---|---|---|
| 3,9713,971 | ||
| 3,6473,647 | ||
| 832832 | ||
| 547547 | ||
| 540540 | ||
| 234234 | ||
| 228228 | ||
| 164164 |
Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 22, 2026
Engine evaluation
+1.08 White is better
Best play: 6. Ne5 c6 7. Bg5 Be6 8. Qf3 Qxd4 9. Bxf6 gxf6 10. Nxc6 Qg4
Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.
Overview
Blackmar-Diemer Gambit Accepted: Ritter Defense (ECO D00, Closed & Semi-Closed Games) is a gambit in the Blackmar-Diemer Gambit Accepted, reached after 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 b6 (5 moves).
In 10,335 rated Lichess games between players rated 1600 to 2500, White won 54.3%, Black 42.5% and 3.2% were drawn. White's most played move here is 6. Bc4, in 38% of those games.
Written from the Lichess opening list and explorer. Know this line well? Write about it.
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How to play against the Blackmar-Diemer Gambit Accepted: Ritter Defense
6. Bb5+ scores best for White: 60.8%, with White winning 59.4% and Black 37.8% of 540 games. The most played answer, 6. Bc4, scores lowest: 54.4% in 3,971 games. Stockfish's first choice is 6. Ne5.
Main answers: those played in at least 5% of these games. Score: White's wins plus half the draws, in rated Lichess games between players rated 1600 to 2500. How to play against other popular openings
Cite this page
Caissa Codex. “Blackmar-Diemer Gambit Accepted: Ritter Defense (D00)”. Lichess data as of 22 Oct 2026. https://chesscodex.org/openings/blackmar-diemer-gambit-accepted-ritter-defense