Caissa Codex
D00

Blackmar-Diemer Gambit Accepted: Gunderam Defense, Stader Variation

Chess diagram: Blackmar-Diemer Gambit Accepted: Gunderam Defense, Stader Variation after 7…Be4

Type a move and press Enter: e4, Nf3, O-O, or from and to squares like g1f3 (e7e8q to promote). The board is also played with the mouse.

Play any move on the board to explore from there, or step through the line with ‹ › and the arrow keys.

Statistics from Lichess

1,845 games: White 48.2% / Draw 4.9% / Black 46.9%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
1,7511,751
4848
2222
1616
11
11
11
11

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 22, 2026

Engine evaluation

0.00 The position is about equal

Best play: 8. Nxe4 Nxe4 9. Qf3 Qh4+ 10. Kd1 Nf2+ 11. Ke2 Nxh1 12. Qxf7+ Kd8

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, Stader Variation (ECO D00, Closed & Semi-Closed Games) is a gambit in the Blackmar-Diemer Gambit Accepted: Gunderam Defense, reached after 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 Bf5 6. Ne5 e6 7. g4 Be4 (7 moves).

In 1,845 rated Lichess games between players rated 1600 to 2500, White won 48.2%, Black 46.9% and 4.9% were drawn. White's most played move here is 8. Nxe4, in 95% of those games.

Written from the Lichess opening list and explorer. Know this line well? Write about it.

Write a description or report a mistake
What would you like to send?

Markdown supported (headings ###, bold, lists, links). Submissions are reviewed before publishing.

Cite this page

Caissa Codex. “Blackmar-Diemer Gambit Accepted: Gunderam Defense, Stader Variation (D00)”. Lichess data as of 22 Oct 2026. https://chesscodex.org/openings/blackmar-diemer-gambit-accepted-gunderam-defense-stader-variation

https://chesscodex.org/openings/blackmar-diemer-gambit-accepted-gunderam-defense-stader-variation