Blackmar-Diemer Gambit Declined: Gedult Defense
4.0K games from Lichess · Updated January 2026
Black expected score · All ratings · All speeds
46.3%
the worst score you would still get, 90% confident. At best 47.6%.
Measured over 4.0K games at this level and clock.
Black comes out behind here — there are better weapons in the list.
Outcomes for Black
Draw 4.3 · Score = win + ½ of the draws · 4.0K games
- Rank among the families Black can choose here
- not ranked — this is a variation, not a family
- Games in this context
- 4.0K
- Best context
- not measured yet
- Average game length
- 33 moves
- Games that end decisively
- 95.7%
- Draws
- 4.3%
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.
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: 55.6% at 0-999, 41.0% 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, Bullet: 59.2% expected score (31 games)
- 0-999 rating, Blitz: 51.3% expected score (155 games)
- 0-999 rating, Rapid: 56.4% expected score (46 games)
- 1000-1199 rating, Bullet: 40.4% expected score (76 games)
- 1000-1199 rating, Blitz: 37.6% expected score (211 games)
- 1000-1199 rating, Rapid: 47.6% expected score (100 games)
- 1000-1199 rating, Classical: 30.0% expected score (1 games)
- 1200-1399 rating, UltraBullet: 50.0% expected score (2 games)
- 1200-1399 rating, Bullet: 57.7% expected score (110 games)
- 1200-1399 rating, Blitz: 44.7% expected score (315 games)
- 1200-1399 rating, Rapid: 48.3% expected score (149 games)
- 1200-1399 rating, Classical: 73.1% expected score (5 games)
- 1400-1599 rating, UltraBullet: 21.5% expected score (2 games)
- 1400-1599 rating, Bullet: 47.8% expected score (160 games)
- 1400-1599 rating, Blitz: 44.6% expected score (358 games)
- 1400-1599 rating, Rapid: 49.5% expected score (205 games)
- 1400-1599 rating, Classical: 56.9% expected score (13 games)
- 1600-1799 rating, Bullet: 39.5% expected score (155 games)
- 1600-1799 rating, Blitz: 44.7% expected score (413 games)
- 1600-1799 rating, Rapid: 47.7% expected score (233 games)
- 1600-1799 rating, Classical: 30.0% expected score (6 games)
- 1800-1999 rating, UltraBullet: 70.0% expected score (1 games)
- 1800-1999 rating, Bullet: 49.8% expected score (180 games)
- 1800-1999 rating, Blitz: 43.4% expected score (306 games)
- 1800-1999 rating, Rapid: 42.6% expected score (127 games)
- 1800-1999 rating, Classical: 38.9% expected score (3 games)
- 2000-2199 rating, UltraBullet: 30.0% expected score (1 games)
- 2000-2199 rating, Bullet: 49.1% expected score (161 games)
- 2000-2199 rating, Blitz: 49.1% expected score (160 games)
- 2000-2199 rating, Rapid: 54.8% expected score (30 games)
- 2000-2199 rating, Classical: 70.0% expected score (1 games)
- 2200-2499 rating, Bullet: 46.4% expected score (192 games)
- 2200-2499 rating, Blitz: 47.7% expected score (41 games)
- 2200-2499 rating, Rapid: 61.2% expected score (3 games)
- 2500+ rating, Bullet: 50.0% expected score (57 games)
- 2500+ rating, Blitz: 31.9% expected score (4 games)
Related Openings
Methodology
Across every rating and clock, the Blackmar-Diemer Gambit Declined: Gedult Defense scores 46.3% for Black — we are 90% confident the real figure is between 45.0% and 47.6% — from 4.0K 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
- 4.0K+ 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 Declined: Gedult Defense win rate?
Playing the Blackmar-Diemer Gambit Declined: Gedult Defense, Black wins 44.1%, draws 4.3% and loses 51.5%. Counting a draw as half a point, that is an Expected Score of 46.3%. It rests on 4.0K rated games from Lichess.
At what rating does the Blackmar-Diemer Gambit Declined: Gedult Defense perform best?
The Blackmar-Diemer Gambit Declined: Gedult Defense performs best for Black at 0-999, with an Expected Score of 53.4% (232 games) and the highest Floor of any rating with enough games to read.
Is the Blackmar-Diemer Gambit Declined: Gedult Defense better in blitz or rapid?
For Black, the Blackmar-Diemer Gambit Declined: Gedult Defense scores higher in Rapid: an Expected Score of 44.6% in Blitz (2.0K games) against 48.2% in Rapid (893 games).
How sharp is the Blackmar-Diemer Gambit Declined: Gedult Defense?
The Blackmar-Diemer Gambit Declined: Gedult Defense has a sharpness score of 95.7 (very decisive), meaning 95.7% of games end decisively. Average game length is 33 moves.
What is the Blackmar-Diemer Gambit Declined: Gedult Defense win rate at 0-999?
At 0-999, Black wins 50.7%, draws 5.4% and loses 43.9%. Counting a draw as half a point, that is an Expected Score of 53.4%. It rests on 232 Lichess games, which average 30 moves.
What is the Blackmar-Diemer Gambit Declined: Gedult Defense win rate at 1000-1199?
At 1000-1199, Black wins 38.1%, draws 4.7% and loses 57.1%. Counting a draw as half a point, that is an Expected Score of 40.5%. It rests on 388 Lichess games, which average 31 moves.
What is the Blackmar-Diemer Gambit Declined: Gedult Defense win rate at 1200-1399?
At 1200-1399, Black wins 46.8%, draws 3.2% and loses 50.0%. Counting a draw as half a point, that is an Expected Score of 48.4%. It rests on 581 Lichess games, which average 32 moves.
What is the Blackmar-Diemer Gambit Declined: Gedult Defense win rate at 1400-1599?
At 1400-1599, Black wins 44.8%, draws 3.9% and loses 51.3%. Counting a draw as half a point, that is an Expected Score of 46.8%. It rests on 738 Lichess games, which average 31 moves.
What is the Blackmar-Diemer Gambit Declined: Gedult Defense win rate at 1600-1799?
At 1600-1799, Black wins 41.7%, draws 5.3% and loses 53.0%. Counting a draw as half a point, that is an Expected Score of 44.4%. It rests on 807 Lichess games, which average 33 moves.
What is the Blackmar-Diemer Gambit Declined: Gedult Defense win rate at 1800-1999?
At 1800-1999, Black wins 42.8%, draws 4.6% and loses 52.6%. Counting a draw as half a point, that is an Expected Score of 45.1%. It rests on 617 Lichess games, which average 34 moves.
What is the Blackmar-Diemer Gambit Declined: Gedult Defense win rate at 2000-2199?
At 2000-2199, Black wins 48.1%, draws 3.0% and loses 48.9%. Counting a draw as half a point, that is an Expected Score of 49.6%. It rests on 353 Lichess games, which average 35 moves.
What is the Blackmar-Diemer Gambit Declined: Gedult Defense win rate at 2200-2499?
At 2200-2499, Black wins 44.4%, draws 4.8% and loses 50.7%. Counting a draw as half a point, that is an Expected Score of 46.9%. It rests on 236 Lichess games, which average 35 moves.
What is the Blackmar-Diemer Gambit Declined: Gedult Defense win rate in Bullet?
In Bullet, Black wins 46.1%, draws 3.4% and loses 50.5%. Counting a draw as half a point, that is an Expected Score of 47.8%. It rests on 1.1K Lichess games.
What is the Blackmar-Diemer Gambit Declined: Gedult Defense win rate in Blitz?
In Blitz, Black wins 42.4%, draws 4.3% and loses 53.3%. Counting a draw as half a point, that is an Expected Score of 44.6%. It rests on 2.0K Lichess games.
What is the Blackmar-Diemer Gambit Declined: Gedult Defense win rate in Rapid?
In Rapid, Black wins 45.3%, draws 5.8% and loses 48.9%. Counting a draw as half a point, that is an Expected Score of 48.2%. It rests on 893 Lichess games.
Is the Blackmar-Diemer Gambit Declined: Gedult Defense a good opening?
The Blackmar-Diemer Gambit Declined: Gedult Defense is hard work for Black — it favours White. Across all ratings, Black wins 44.1% of its games and loses 51.5%. It performs best at 0-999. Your results depend on your rating, time control, and how well you know the typical plans.