Caissa Codex
D00

Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Kloss Attack

Chess diagram: Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Kloss Attack after 8. Kh1

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Statistics from Lichess

1,531 games: White 45.3% / Draw 6.3% / Black 48.4%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
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Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 30, 2026

Engine evaluation

−1.15 Black is better

Best play: 8... Nc6 9. Be3 Bg4 10. Bg1 a6 11. a4 e6 12. a5 Qd6 13. Bb3

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

Overview

Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Kloss Attack (ECO D00, Closed & Semi-Closed Games) is a gambit in the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, reached after 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 g6 6. Bc4 Bg7 7. O-O O-O 8. Kh1 (8 moves).

In 1,531 rated Lichess games between players rated 1600 to 2500, White won 45.3%, Black 48.4% and 6.3% were drawn. Black's most played move here is 8…Bg4, in 31% of those games.

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How to play against the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Kloss Attack

8…Nc6 scores best for Black: 56.6%, with Black winning 54.2% and White 41.1% of 190 games. The most played, 8…Bg4, scores 51.2% in 470 games, and 8…b6 scores lowest: 47.5%. Stockfish's first choice is also 8…Nc6.

Main answers: those played in at least 5% of these games. Score: Black's wins plus half the draws, in rated Lichess games between players rated 1600 to 2500. How to play against other popular openings

Other lines from the same position

Instead of 6. Bc4 Bg7 7. O-O O-O 8. Kh1, the position after Blackmar-Diemer Gambit Accepted: Bogoljubow Defense also goes on to:

Cite this page

Caissa Codex. “Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Kloss Attack (D00)”. Lichess data as of 30 Oct 2026. https://chesscodex.org/openings/blackmar-diemer-gambit-accepted-bogoljubow-defense-kloss-attack

https://chesscodex.org/openings/blackmar-diemer-gambit-accepted-bogoljubow-defense-kloss-attack