Blackmar-Diemer Gambit Declined: Brombacher Countergambit
1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 c5
The Blackmar-Diemer Gambit Declined: Brombacher Countergambit is a chess opening classified as ECO D00, reached after 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 c5. It is a line of the Blackmar-Diemer Gambit Declined. White is to move.
In 12.6 million rated Lichess games (blitz and slower), this position was reached 78 times by this move order. White won 37%, 5% were drawn and Black won 58%. The most popular continuation is 5. d5 (73% of games).
Engine evaluation: −0.30 (Stockfish, depth 36; best line 5. d5 exf3 6. Nxf3 g6 7. Bb5+ Nbd7)
- ECO
- D00
- Moves
- 8 plies
- FEN
rnbqkb1r/pp2pppp/5n2/2p5/3Pp3/2N2P2/PPP3PP/R1BQKBNR w KQkq - 0 5- PGN
1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 c5
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Results by rating
| Average rating | Games | White / draw / Black |
|---|---|---|
| 0-1499 | 9 | |
| 1500-1999 | 39 | |
| 2000+ | 30 | |
| All | 78 |
Most played moves
| Move | Games | White / draw / Black |
|---|---|---|
| 5. d5 | 57 (73%) | |
| 5. Be3 | 8 (10%) | |
| 5. fxe4 | 5 (6%) | |
| 5. dxc5 | 4 (5%) | |
| 5. Bb5+ | 2 (3%) | |
| 5. Qe2 | 1 (1%) | |
| 5. Nxe4 | 1 (1%) |
Master games
21 over-the-board games are classified under this line (White 48%, draw 4%, Black 48%). The strongest:
- IM Juan Mellado Trivino (2427) – GM Sandipan Chanda (2572) 0-1 · 17th Miquel Mas Open 2016 · 2016-08-17
- IM Shamil Arslanov (2410) – GM Alexander Rustemov (2525) 1-0 · Titled Tue 13th Jan 2026 · 2026-01-13
- IM Shamil Arslanov (2410) – GM Luis Manuel Perez Rodriguez (2318) 1-0 · Titled Tue 2nd Jul Late · 2024-07-02
- IM Shamil Arslanov (2410) – FM Nayak Rajesh (2286) 1-0 · Titled Tue 27th May Early · 2025-05-27
- IM Inigo Argandona Riveiro (2333) – FM Mikayel Manvelyan (2362) 1-0 · Titled Tue 6th May Late · 2025-05-06
Highest-rated Lichess games
- Tsalko_vadim (2504) – tsnylsw (2740) 0-1 · 2026-09-04 · 180 + 0s
- Tsalko_vadim (2473) – Boreminator (2499) 0-1 · 2026-09-04 · 180 + 0s
- Tsalko_vadim (2430) – BurningPhil (2529) 0-1 · 2026-09-05 · 180 + 0s
Comes from
Blackmar-Diemer Gambit (3. Nc3 Nf6) 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6
More Blackmar-Diemer Gambit Declined lines (all)
- Blackmar-Diemer Gambit Declined: Elbert Countergambit D00
- Blackmar-Diemer Gambit Declined: Gedult Defense D00
- Blackmar-Diemer Gambit Declined: Lamb Defense D00
- Blackmar-Diemer Gambit Declined: Langeheinicke Defense D00
- Blackmar-Diemer Gambit Declined: O'Kelly Defense D00
- Blackmar-Diemer Gambit Declined: Vienna Defense D00
- Blackmar-Diemer Gambit Declined: Weinsbach Defense D00
- Blackmar-Diemer Gambit Declined: Weinsbach Defense, Pfrang Gambit D00
Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.