Blackmar-Diemer Gambit Accepted: Bogoljubow Defense

61K games from Lichess · Updated January 2026

5...g6

Analyze this line move by move

Black expected score · All ratings · All speeds

51.3%

45%55%

Floor50.9%

the worst score you would still get, 90% confident. At best 51.6%.

Measured over 61K games at this level and clock.

Playablewins about as often as it loses at this level

Roughly even — the middlegame decides more than this opening choice does.

Outcomes for Black

49.4%3.7%46.9%

Win

Draw

Loss

Draw 3.7 · Score = win + ½ of the draws · 61K games

Rank among the families Black can choose here: not ranked — this is a variation, not a family
Games in this context: 61K
Best context: 54.9% at 1800-1999 Rapid
Worst context: 48.3% at 2200-2499 Bullet
Average game length: 32 moves
Games that end decisively: 96.3%
Draws: 3.7%

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

Time-Control Swing

Max swing: 10.7% · Bullet best · Classical worst

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: 46.7% at 0-999, 41.2% 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: 30.0% expected score (1 games)
0-999 rating, Bullet: 51.9% expected score (132 games)
0-999 rating, Blitz: 50.7% expected score (232 games)
0-999 rating, Rapid: 54.1% expected score (60 games)
1000-1199 rating, UltraBullet: 78.6% expected score (2 games)
1000-1199 rating, Bullet: 50.4% expected score (429 games)
1000-1199 rating, Blitz: 54.2% expected score (755 games)
1000-1199 rating, Rapid: 53.5% expected score (276 games)
1200-1399 rating, UltraBullet: 73.6% expected score (7 games)
1200-1399 rating, Bullet: 49.8% expected score (908 games)
1200-1399 rating, Blitz: 52.4% expected score (1,616 games)
1200-1399 rating, Rapid: 50.3% expected score (578 games)
1200-1399 rating, Classical: 37.8% expected score (19 games)
1400-1599 rating, UltraBullet: 51.9% expected score (25 games)
1400-1599 rating, Bullet: 49.5% expected score (1,584 games)
1400-1599 rating, Blitz: 51.1% expected score (3,410 games)
1400-1599 rating, Rapid: 54.4% expected score (1,196 games)
1400-1599 rating, Classical: 53.4% expected score (28 games)
1600-1799 rating, UltraBullet: 61.0% expected score (58 games)
1600-1799 rating, Bullet: 49.4% expected score (3,038 games)
1600-1799 rating, Blitz: 52.6% expected score (5,627 games)
1600-1799 rating, Rapid: 54.8% expected score (2,214 games)
1600-1799 rating, Classical: 59.2% expected score (96 games)
1800-1999 rating, UltraBullet: 54.3% expected score (45 games)
1800-1999 rating, Bullet: 48.7% expected score (4,383 games)
1800-1999 rating, Blitz: 51.7% expected score (8,943 games)
1800-1999 rating, Rapid: 54.9% expected score (2,686 games)
1800-1999 rating, Classical: 63.1% expected score (121 games)
2000-2199 rating, UltraBullet: 36.7% expected score (21 games)
2000-2199 rating, Bullet: 50.1% expected score (4,631 games)
2000-2199 rating, Blitz: 52.0% expected score (7,025 games)
2000-2199 rating, Rapid: 52.6% expected score (1,562 games)
2000-2199 rating, Classical: 57.8% expected score (89 games)
2200-2499 rating, UltraBullet: 30.7% expected score (14 games)
2200-2499 rating, Bullet: 48.3% expected score (4,703 games)
2200-2499 rating, Blitz: 51.1% expected score (2,675 games)
2200-2499 rating, Rapid: 50.3% expected score (404 games)
2200-2499 rating, Classical: 50.0% expected score (4 games)
2500+ rating, UltraBullet: 27.0% expected score (5 games)
2500+ rating, Bullet: 49.1% expected score (1,234 games)
2500+ rating, Blitz: 38.7% expected score (162 games)
2500+ rating, Rapid: 50.0% expected score (2 games)

Related Openings

Parent

Blackmar-Diemer Gambit Accepted

50.9%

Variations (5)

Blackmar-Diemer Gambit Accepted: Ryder Gambit

54.2%

Blackmar-Diemer Gambit Accepted: Teichmann Defense

53.2%

Blackmar-Diemer Gambit Accepted: Euwe Defense

58.8%

Blackmar-Diemer Gambit Accepted: Ziegler Defense

55.2%

Blackmar-Diemer Gambit Accepted: Pietrowsky Defense

53.4%

Continuations (4)

Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Studier Attack

52.0%

Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Nimzowitsch Attack

47.9%

Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Kloss Attack

47.1%

Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Mad Dog Attack

50.1%

Analyze Blackmar-Diemer Gambit Accepted: Bogoljubow Defense PositionsSee what each move is worth at your rating, move by move

Methodology

Across every rating and clock, the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense scores 51.3% for Black — we are 90% confident the real figure is between 50.9% and 51.6% — from 61K 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: 61K+ 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: Bogoljubow Defense win rate?

Playing the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Black wins 49.4%, draws 3.7% and loses 46.9%. Counting a draw as half a point, that is an Expected Score of 51.3%. It rests on 61K rated games from Lichess.

At what rating does the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense perform best?

The Blackmar-Diemer Gambit Accepted: Bogoljubow Defense performs best for Black at 1600-1799, with an Expected Score of 52.3% (11K games) and the highest Floor of any rating with enough games to read.

Is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense better in blitz or rapid?

For Black, the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense scores higher in Rapid: an Expected Score of 51.8% in Blitz (30K games) against 53.9% in Rapid (9.0K games).

How sharp is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense?

The Blackmar-Diemer Gambit Accepted: Bogoljubow Defense has a sharpness score of 96.3 (very decisive), meaning 96.3% of games end decisively. Average game length is 32 moves.

What is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense win rate at 0-999?

At 0-999, Black wins 50.5%, draws 1.8% and loses 47.7%. Counting a draw as half a point, that is an Expected Score of 51.4%. It rests on 425 Lichess games, which average 25 moves.

What is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense win rate at 1000-1199?

At 1000-1199, Black wins 51.6%, draws 2.8% and loses 45.6%. Counting a draw as half a point, that is an Expected Score of 53.0%. It rests on 1.5K Lichess games, which average 28 moves.

What is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense win rate at 1200-1399?

At 1200-1399, Black wins 49.9%, draws 2.6% and loses 47.5%. Counting a draw as half a point, that is an Expected Score of 51.2%. It rests on 3.1K Lichess games, which average 29 moves.

What is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense win rate at 1400-1599?

At 1400-1599, Black wins 49.8%, draws 2.9% and loses 47.2%. Counting a draw as half a point, that is an Expected Score of 51.3%. It rests on 6.2K Lichess games, which average 30 moves.

What is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense win rate at 1600-1799?

At 1600-1799, Black wins 50.5%, draws 3.5% and loses 46.0%. Counting a draw as half a point, that is an Expected Score of 52.3%. It rests on 11K Lichess games, which average 31 moves.

What is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense win rate at 1800-1999?

At 1800-1999, Black wins 49.6%, draws 3.7% and loses 46.6%. Counting a draw as half a point, that is an Expected Score of 51.5%. It rests on 16K Lichess games, which average 33 moves.

What is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense 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 13K Lichess games, which average 34 moves.

What is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense win rate at 2200-2499?

At 2200-2499, Black wins 47.0%, draws 4.5% and loses 48.4%. Counting a draw as half a point, that is an Expected Score of 49.3%. It rests on 7.8K Lichess games, which average 35 moves.

What is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense win rate at 2500+?

At 2500+, Black wins 45.4%, draws 4.7% and loses 49.9%. Counting a draw as half a point, that is an Expected Score of 47.8%. It rests on 1.4K Lichess games, which average 38 moves.

What is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense win rate in UltraBullet?

In UltraBullet, Black wins 50.4%, draws 3.6% and loses 46.0%. Counting a draw as half a point, that is an Expected Score of 52.2%. It rests on 178 Lichess games.

What is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense win rate in Bullet?

In Bullet, Black wins 47.7%, draws 3.0% and loses 49.3%. Counting a draw as half a point, that is an Expected Score of 49.2%. It rests on 21K Lichess games.

What is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense win rate in Blitz?

In Blitz, Black wins 49.8%, draws 4.0% and loses 46.2%. Counting a draw as half a point, that is an Expected Score of 51.8%. It rests on 30K Lichess games.

What is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense win rate in Rapid?

In Rapid, Black wins 51.7%, draws 4.3% and loses 44.0%. Counting a draw as half a point, that is an Expected Score of 53.9%. It rests on 9.0K Lichess games.

What is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense win rate in Classical?

In Classical, Black wins 55.6%, draws 5.7% and loses 38.6%. Counting a draw as half a point, that is an Expected Score of 58.5%. It rests on 357 Lichess games.

Is the Blackmar-Diemer Gambit Accepted: Bogoljubow Defense a good opening?

The Blackmar-Diemer Gambit Accepted: Bogoljubow Defense is about level. Across all ratings, Black wins 49.4% of its games and loses 46.9%. It performs best at 1600-1799. Your results depend on your rating, time control, and how well you know the typical plans.