D00

Blackmar-Diemer Gambit Declined: Lamb Defense

Chess diagram: Blackmar-Diemer Gambit Declined: Lamb Defense after 4…Nc6

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Statistics from Lichess

101,957 games: White 48.6% / Draw 4.3% / Black 47.1%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
35,31935K
24,15924K
19,61320K
16,73517K
1,6721,672
1,5041,504
1,1361,136
1,0801,080

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 24, 2026

Engine evaluation

−0.08 The position is about equal

Best play: 5. d5 Ne5 6. fxe4 e6 7. Nf3 Nxf3+ 8. Qxf3 exd5 9. Nxd5 Nxd5

Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.

Overview

Blackmar-Diemer Gambit Declined: Lamb Defense (ECO D00, Closed & Semi-Closed Games) is a declined gambit in the Blackmar-Diemer Gambit, reached after 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 Nc6 (4 moves).

In 101,957 rated Lichess games between players rated 1600 to 2500, White won 48.6%, Black 47.1% and 4.3% were drawn. White's most played move here is 5. d5, in 35% of those games.

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How to play against the Blackmar-Diemer Gambit Declined: Lamb Defense

The most played answer, 5. d5, also scores best for White: 56.2%, with White winning 54.0% and Black 41.6% of 35K games. Of the main answers, 5. fxe4 scores lowest: 43.3%. Stockfish's first choice is also 5. d5.

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 Declined: Lamb Defense (D00)”. Lichess data as of 24 Oct 2026. https://chesscodex.org/openings/blackmar-diemer-gambit-declined-lamb-defense