Blackmar-Diemer Gambit Accepted: Gunderam Defense
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Statistics from Lichess
103,277 games: White 45.7% / Draw 4.3% / Black 50.0%
| Next move | Games | White / Draw / BlackW / D / B |
|---|---|---|
| 49,60650K | ||
| 14,62115K | ||
| 14,40214K | ||
| 6,1926,192 | ||
| 5,7075,707 | ||
| 5,3385,338 | ||
| 2,7722,772 | ||
| 1,5911,591 |
Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Nov 1, 2026
Engine evaluation
−0.37 Black is slightly better
Best play: 6. Bd3 Bxd3 7. Qxd3 c6 8. Bg5 e6 9. O-O-O Nbd7 10. Kb1 Be7
Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.
Overview
Blackmar-Diemer Gambit Accepted: Gunderam 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 Bf5 (5 moves).
In 103,277 rated Lichess games between players rated 1600 to 2500, White won 45.7%, Black 50.0% and 4.3% were drawn. White's most played move here is 6. Bc4, in 48% of those games.
It continues into one named variation, Blackmar-Diemer Gambit Accepted: Gunderam Defense, Stader Variation.
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: Gunderam Defense
6. Ne5 scores best for White: 55.8%, with White winning 53.5% and Black 42.0% of 15K games. The most played, 6. Bc4, scores 47.1% in 50K games, and 6. h3 scores lowest: 44.4%. Stockfish's first choice is 6. Bd3.
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
Variations (1)
Cite this page
Caissa Codex. “Blackmar-Diemer Gambit Accepted: Gunderam Defense (D00)”. Lichess data as of 1 Nov 2026. https://chesscodex.org/openings/blackmar-diemer-gambit-accepted-gunderam-defense