Blackmar-Diemer Gambit Accepted
59K games from Lichess · Updated January 2026
Black expected score · All ratings · All speeds
47.4%
the worst score you would still get, 90% confident. At best 47.8%.
Measured over 59K games at this level and clock.
Black comes out behind here — there are better weapons in the list.
Outcomes for Black
Draw 3.5 · Score = win + ½ of the draws · 59K games
- Rank among the families Black can choose here
- not ranked — this is a variation, not a family
- Games in this context
- 59K
- Best context
- 62.1% at 0-999 Rapid
- Worst context
- 41.4% at 1800-1999 Rapid
- Average game length
- 29 moves
- Games that end decisively
- 96.5%
- Draws
- 3.5%
Best and worst are the strongest and weakest squares with at least 500 games behind them. The table further down shows every square, including thinner ones.
Extra Analysis
Deep-dive datasets for this opening
Where it holds · Black score by rating × clock
Green is clearly ahead for Black, grey is around even, red is behind. Tap a cell to measure there, and again to clear. It falls away as the rating rises: 64.4% at 0-999, 51.0% at 2500+.
| Rating | UB | Bulle | Blitz | Rapid | Class |
|---|---|---|---|---|---|
| 0-999 | |||||
| 1000-1199 | |||||
| 1200-1399 | |||||
| 1400-1599 | |||||
| 1600-1799 | |||||
| 1800-1999 | |||||
| 2000-2199 | |||||
| 2200-2499 | — | ||||
| 2500+ | — | — |
Expected score matrix by rating bracket and time control
- 0-999 rating, UltraBullet: 78.6% expected score (2 games)
- 0-999 rating, Bullet: 53.2% expected score (1,532 games)
- 0-999 rating, Blitz: 57.0% expected score (3,054 games)
- 0-999 rating, Rapid: 62.1% expected score (2,120 games)
- 0-999 rating, Classical: 71.0% expected score (20 games)
- 1000-1199 rating, UltraBullet: 32.8% expected score (13 games)
- 1000-1199 rating, Bullet: 49.9% expected score (1,600 games)
- 1000-1199 rating, Blitz: 49.5% expected score (2,359 games)
- 1000-1199 rating, Rapid: 57.0% expected score (1,447 games)
- 1000-1199 rating, Classical: 64.0% expected score (45 games)
- 1200-1399 rating, UltraBullet: 51.2% expected score (43 games)
- 1200-1399 rating, Bullet: 46.4% expected score (1,978 games)
- 1200-1399 rating, Blitz: 45.9% expected score (3,362 games)
- 1200-1399 rating, Rapid: 47.7% expected score (1,615 games)
- 1200-1399 rating, Classical: 70.3% expected score (65 games)
- 1400-1599 rating, UltraBullet: 43.5% expected score (75 games)
- 1400-1599 rating, Bullet: 47.7% expected score (2,761 games)
- 1400-1599 rating, Blitz: 45.1% expected score (5,056 games)
- 1400-1599 rating, Rapid: 48.6% expected score (2,631 games)
- 1400-1599 rating, Classical: 67.1% expected score (145 games)
- 1600-1799 rating, UltraBullet: 41.3% expected score (297 games)
- 1600-1799 rating, Bullet: 45.2% expected score (3,640 games)
- 1600-1799 rating, Blitz: 44.7% expected score (4,802 games)
- 1600-1799 rating, Rapid: 42.1% expected score (2,857 games)
- 1600-1799 rating, Classical: 39.6% expected score (143 games)
- 1800-1999 rating, UltraBullet: 45.9% expected score (97 games)
- 1800-1999 rating, Bullet: 45.6% expected score (4,752 games)
- 1800-1999 rating, Blitz: 44.9% expected score (3,700 games)
- 1800-1999 rating, Rapid: 41.4% expected score (1,836 games)
- 1800-1999 rating, Classical: 38.3% expected score (71 games)
- 2000-2199 rating, UltraBullet: 45.7% expected score (44 games)
- 2000-2199 rating, Bullet: 45.9% expected score (3,293 games)
- 2000-2199 rating, Blitz: 42.7% expected score (1,155 games)
- 2000-2199 rating, Rapid: 40.2% expected score (397 games)
- 2000-2199 rating, Classical: 18.5% expected score (8 games)
- 2200-2499 rating, UltraBullet: 32.6% expected score (10 games)
- 2200-2499 rating, Bullet: 46.2% expected score (1,691 games)
- 2200-2499 rating, Blitz: 48.7% expected score (193 games)
- 2200-2499 rating, Rapid: 41.6% expected score (40 games)
- 2500+ rating, UltraBullet: 50.0% expected score (2 games)
- 2500+ rating, Bullet: 49.8% expected score (275 games)
- 2500+ rating, Blitz: 53.1% expected score (15 games)
Related Openings
Methodology
Across every rating and clock, the Blackmar-Diemer Gambit Accepted scores 47.4% for Black — we are 90% confident the real figure is between 47.1% and 47.8% — from 59K Lichess games. Win rate, draw rate and loss rate come from games played December 2023 to November 2025.
How the figures are made
- Whose games these are
- 59K+ rated games played on Lichess (2023-12 to 2025-11). The games are Lichess’s and free for anyone to use. What is ours is the reading of them. Last rebuilt January 2026.
- Which games we count
- Rated games only — nothing casual.
- Both players within 200 rating points of each other. A mismatch tells you about the gap, not about the opening.
- At least 2 moves played.
- A game is filed under White’s rating.
- Why every number comes with a range
- A number off a few hundred games is a guess. The same number off millions is a fact. The range is what tells them apart, and it is what the lists rank on — so an opening cannot reach the top on a lucky run of forty games. The more games behind a figure, the narrower its range.
- How much we need before we say anything
- An opening page needs 100 games. A gambit needs 50 games at a rating before we will say whether it pays there. The chaos and trap lists need 500 games overall and 250 games at one rating or clock.
Frequently Asked Questions
What is the Blackmar-Diemer Gambit Accepted win rate?
Playing the Blackmar-Diemer Gambit Accepted, Black wins 45.6%, draws 3.5% and loses 50.9%. Counting a draw as half a point, that is an Expected Score of 47.4%. It rests on 59K rated games from Lichess.
At what rating does the Blackmar-Diemer Gambit Accepted perform best?
The Blackmar-Diemer Gambit Accepted performs best for Black at 0-999, with an Expected Score of 57.8% (6.7K games) and the highest Floor of any rating with enough games to read.
Is the Blackmar-Diemer Gambit Accepted better in blitz or rapid?
For Black, the Blackmar-Diemer Gambit Accepted scores higher in Rapid: an Expected Score of 47.0% in Blitz (24K games) against 48.9% in Rapid (13K games).
How sharp is the Blackmar-Diemer Gambit Accepted?
The Blackmar-Diemer Gambit Accepted has a sharpness score of 96.5 (very decisive), meaning 96.5% of games end decisively. Average game length is 29 moves.
What is the Blackmar-Diemer Gambit Accepted win rate at 0-999?
At 0-999, Black wins 55.4%, draws 4.9% and loses 39.8%. Counting a draw as half a point, that is an Expected Score of 57.8%. It rests on 6.7K Lichess games, which average 27 moves.
What is the Blackmar-Diemer Gambit Accepted win rate at 1000-1199?
At 1000-1199, Black wins 50.1%, draws 3.2% and loses 46.8%. Counting a draw as half a point, that is an Expected Score of 51.7%. It rests on 5.5K Lichess games, which average 27 moves.
What is the Blackmar-Diemer Gambit Accepted win rate at 1200-1399?
At 1200-1399, Black wins 45.2%, draws 3.1% and loses 51.8%. Counting a draw as half a point, that is an Expected Score of 46.7%. It rests on 7.1K Lichess games, which average 27 moves.
What is the Blackmar-Diemer Gambit Accepted win rate at 1400-1599?
At 1400-1599, Black wins 45.3%, draws 3.1% and loses 51.6%. Counting a draw as half a point, that is an Expected Score of 46.9%. It rests on 11K Lichess games, which average 28 moves.
What is the Blackmar-Diemer Gambit Accepted win rate at 1600-1799?
At 1600-1799, Black wins 42.5%, draws 3.0% and loses 54.5%. Counting a draw as half a point, that is an Expected Score of 44.0%. It rests on 12K Lichess games, which average 29 moves.
What is the Blackmar-Diemer Gambit Accepted win rate at 1800-1999?
At 1800-1999, Black wins 42.8%, draws 3.6% and loses 53.7%. Counting a draw as half a point, that is an Expected Score of 44.6%. It rests on 10K Lichess games, which average 31 moves.
What is the Blackmar-Diemer Gambit Accepted win rate at 2000-2199?
At 2000-2199, Black wins 42.6%, draws 4.0% and loses 53.4%. Counting a draw as half a point, that is an Expected Score of 44.6%. It rests on 4.9K Lichess games, which average 32 moves.
What is the Blackmar-Diemer Gambit Accepted win rate at 2200-2499?
At 2200-2499, Black wins 43.7%, draws 5.1% and loses 51.2%. Counting a draw as half a point, that is an Expected Score of 46.3%. It rests on 1.9K Lichess games, which average 35 moves.
What is the Blackmar-Diemer Gambit Accepted win rate at 2500+?
At 2500+, Black wins 46.8%, draws 6.3% and loses 46.8%. Counting a draw as half a point, that is an Expected Score of 50.0%. It rests on 292 Lichess games, which average 38 moves.
What is the Blackmar-Diemer Gambit Accepted win rate in UltraBullet?
In UltraBullet, Black wins 42.0%, draws 2.3% and loses 55.7%. Counting a draw as half a point, that is an Expected Score of 43.2%. It rests on 583 Lichess games.
What is the Blackmar-Diemer Gambit Accepted win rate in Bullet?
In Bullet, Black wins 45.4%, draws 2.8% and loses 51.7%. Counting a draw as half a point, that is an Expected Score of 46.9%. It rests on 22K Lichess games.
What is the Blackmar-Diemer Gambit Accepted win rate in Blitz?
In Blitz, Black wins 45.1%, draws 3.8% and loses 51.1%. Counting a draw as half a point, that is an Expected Score of 47.0%. It rests on 24K Lichess games.
What is the Blackmar-Diemer Gambit Accepted win rate in Rapid?
In Rapid, Black wins 46.8%, draws 4.2% and loses 49.0%. Counting a draw as half a point, that is an Expected Score of 48.9%. It rests on 13K Lichess games.
What is the Blackmar-Diemer Gambit Accepted win rate in Classical?
In Classical, Black wins 52.9%, draws 3.5% and loses 43.6%. Counting a draw as half a point, that is an Expected Score of 54.7%. It rests on 497 Lichess games.
Is the Blackmar-Diemer Gambit Accepted a good opening?
The Blackmar-Diemer Gambit Accepted is hard work for Black — it favours White. Across all ratings, Black wins 45.6% of its games and loses 50.9%. It performs best at 0-999. Your results depend on your rating, time control, and how well you know the typical plans.