Blackmar-Diemer Gambit Declined: Lamb Defense
1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 Nc6
The Blackmar-Diemer Gambit Declined: Lamb Defense is a chess opening classified as ECO D00, reached after 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 Nc6. 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 323 times by this move order. White won 50%, 4% were drawn and Black won 46%. The most popular continuation is 5. Bb5 (28% of games).
Engine evaluation: −0.05 (Stockfish, depth 37; best line 5. d5 Ne5 6. fxe4 e6 7. Nf3 Nxf3+)
- ECO
- D00
- Moves
- 8 plies
- FEN
r1bqkb1r/ppp1pppp/2n2n2/8/3Pp3/2N2P2/PPP3PP/R1BQKBNR w KQkq - 1 5- PGN
1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 Nc6
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Results by rating
| Average rating | Games | White / draw / Black |
|---|---|---|
| 0-1499 | 144 | |
| 1500-1999 | 168 | |
| 2000+ | 11 | |
| All | 323 |
Most played moves
| Move | Games | White / draw / Black |
|---|---|---|
| 5. Bb5 | 89 (28%) | |
| 5. d5 | 86 (27%) | |
| 5. Be3 | 66 (20%) | |
| 5. fxe4 | 61 (19%) | |
| 5. Bf4 | 7 (2%) | |
| 5. Bg5 | 5 (2%) | |
| 5. Bc4 | 4 (1%) | |
| 5. Nxe4 | 2 (1%) |
Master games
6 over-the-board games are classified under this line (White 67%, draw 0%, Black 33%). The strongest:
- IM Shamil Arslanov (2410) – IM Mahel Boyer (2529) 1-0 · Titled Tue 11th Mar Late · 2025-03-11
- IM Shamil Arslanov (2410) – IM Murad Ibrahimli (2445) 0-1 · Titled Tue 26th Aug Early · 2025-08-26
- IM Shamil Arslanov (2410) – Duc Minh Lai (2131) 1-0 · 1st 3-0 Thu 30th Jul 2026 · 2026-07-30
- Klaus Montermann (2016) – Soenke Rollenske (1745) 0-1 · Marburger Schachtage 2024 · 2024-10-24
Search all games of the Blackmar-Diemer Gambit Declined: Lamb Defense and its sub-variations
Highest-rated Lichess games
- OzzY666 (2307) – FM sachista15 (2423) 0-1 · 2026-09-07 · 180 + 0s
- Microphone_Theory (2264) – Mate_uruguayo (2264) 1-0 · 2026-09-06 · 180 + 0s
- jaimon_tecno (2139) – Donkie (2179) 0-1 · 2026-09-06 · 300 + 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: Brombacher Countergambit D00
- Blackmar-Diemer Gambit Declined: Elbert Countergambit D00
- Blackmar-Diemer Gambit Declined: Gedult 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.