Blumenfeld Countergambit Accepted
9.2K games from Lichess · Updated January 2026
Black expected score · All ratings · All speeds
48.8%
the worst score you would still get, 90% confident. At best 49.7%.
Measured over 9.2K games at this level and clock.
Roughly even — the middlegame decides more than this opening choice does.
Outcomes for Black
Draw 4.4 · Score = win + ½ of the draws · 9.2K games
- Rank among the families Black can choose here
- not ranked — this is a variation, not a family
- Games in this context
- 9.2K
- Best context
- 54.7% at 1800-1999 Blitz
- Worst context
- 45.0% at 2200-2499 Blitz
- Average game length
- 34 moves
- Games that end decisively
- 95.6%
- Draws
- 4.4%
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: 50.0% at 0-999, 43.8% 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: 70.0% expected score (1 games)
- 0-999 rating, Blitz: 30.0% expected score (1 games)
- 1000-1199 rating, Blitz: 30.0% expected score (1 games)
- 1000-1199 rating, Rapid: 21.5% expected score (2 games)
- 1200-1399 rating, Bullet: 50.0% expected score (8 games)
- 1200-1399 rating, Blitz: 44.7% expected score (8 games)
- 1200-1399 rating, Rapid: 78.6% expected score (2 games)
- 1400-1599 rating, Bullet: 47.0% expected score (15 games)
- 1400-1599 rating, Blitz: 44.7% expected score (27 games)
- 1400-1599 rating, Rapid: 60.6% expected score (8 games)
- 1400-1599 rating, Classical: 21.5% expected score (2 games)
- 1600-1799 rating, Bullet: 58.3% expected score (83 games)
- 1600-1799 rating, Blitz: 61.6% expected score (98 games)
- 1600-1799 rating, Rapid: 53.9% expected score (24 games)
- 1600-1799 rating, Classical: 50.0% expected score (2 games)
- 1800-1999 rating, Bullet: 54.0% expected score (184 games)
- 1800-1999 rating, Blitz: 54.7% expected score (592 games)
- 1800-1999 rating, Rapid: 49.4% expected score (73 games)
- 1800-1999 rating, Classical: 67.4% expected score (10 games)
- 2000-2199 rating, Bullet: 50.7% expected score (438 games)
- 2000-2199 rating, Blitz: 50.6% expected score (1,999 games)
- 2000-2199 rating, Rapid: 57.6% expected score (242 games)
- 2000-2199 rating, Classical: 67.0% expected score (22 games)
- 2200-2499 rating, Bullet: 50.7% expected score (852 games)
- 2200-2499 rating, Blitz: 45.0% expected score (3,009 games)
- 2200-2499 rating, Rapid: 42.6% expected score (240 games)
- 2200-2499 rating, Classical: 43.1% expected score (13 games)
- 2500+ rating, Bullet: 49.3% expected score (568 games)
- 2500+ rating, Blitz: 45.5% expected score (642 games)
- 2500+ rating, Rapid: 36.6% expected score (32 games)
Methodology
Across every rating and clock, the Blumenfeld Countergambit Accepted scores 48.8% for Black — we are 90% confident the real figure is between 48.0% and 49.7% — from 9.2K 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
- 9.2K+ 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 Blumenfeld Countergambit Accepted win rate?
Playing the Blumenfeld Countergambit Accepted, Black wins 46.6%, draws 4.4% and loses 49.0%. Counting a draw as half a point, that is an Expected Score of 48.8%. It rests on 9.2K rated games from Lichess.
At what rating does the Blumenfeld Countergambit Accepted perform best?
The Blumenfeld Countergambit Accepted performs best for Black at 1600-1799, with an Expected Score of 59.4% (207 games) and the highest Floor of any rating with enough games to read.
Is the Blumenfeld Countergambit Accepted better in blitz or rapid?
For Black, the Blumenfeld Countergambit Accepted scores higher in Rapid: an Expected Score of 48.0% in Blitz (6.4K games) against 49.6% in Rapid (623 games).
How sharp is the Blumenfeld Countergambit Accepted?
The Blumenfeld Countergambit Accepted has a sharpness score of 95.6 (very decisive), meaning 95.6% of games end decisively. Average game length is 34 moves.
What is the Blumenfeld Countergambit Accepted win rate at 1600-1799?
At 1600-1799, Black wins 57.3%, draws 4.1% and loses 38.6%. Counting a draw as half a point, that is an Expected Score of 59.4%. It rests on 207 Lichess games, which average 32 moves.
What is the Blumenfeld Countergambit Accepted win rate at 1800-1999?
At 1800-1999, Black wins 52.9%, draws 2.7% and loses 44.3%. Counting a draw as half a point, that is an Expected Score of 54.3%. It rests on 859 Lichess games, which average 31 moves.
What is the Blumenfeld Countergambit Accepted win rate at 2000-2199?
At 2000-2199, Black wins 49.3%, draws 4.2% and loses 46.5%. Counting a draw as half a point, that is an Expected Score of 51.4%. It rests on 2.7K Lichess games, which average 33 moves.
What is the Blumenfeld Countergambit Accepted win rate at 2200-2499?
At 2200-2499, Black wins 43.8%, draws 4.4% and loses 51.8%. Counting a draw as half a point, that is an Expected Score of 46.0%. It rests on 4.1K Lichess games, which average 35 moves.
What is the Blumenfeld Countergambit Accepted win rate at 2500+?
At 2500+, Black wins 44.1%, draws 5.7% and loses 50.1%. Counting a draw as half a point, that is an Expected Score of 47.0%. It rests on 1.2K Lichess games, which average 38 moves.
What is the Blumenfeld Countergambit Accepted win rate in Bullet?
In Bullet, Black wins 49.6%, draws 2.6% and loses 47.8%. Counting a draw as half a point, that is an Expected Score of 50.9%. It rests on 2.1K Lichess games.
What is the Blumenfeld Countergambit Accepted win rate in Blitz?
In Blitz, Black wins 45.6%, draws 4.7% and loses 49.7%. Counting a draw as half a point, that is an Expected Score of 48.0%. It rests on 6.4K Lichess games.
What is the Blumenfeld Countergambit Accepted win rate in Rapid?
In Rapid, Black wins 46.5%, draws 6.2% and loses 47.3%. Counting a draw as half a point, that is an Expected Score of 49.6%. It rests on 623 Lichess games.
Is the Blumenfeld Countergambit Accepted a good opening?
The Blumenfeld Countergambit Accepted is hard work for Black — it favours White. Across all ratings, Black wins 46.6% of its games and loses 49.0%. It performs best at 1600-1799. Your results depend on your rating, time control, and how well you know the typical plans.