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Blackmar-Diemer Gambit Accepted: Ritter Defense

10K games from Lichess · Updated January 2026

Tough Sell
Black Expected Score43.6%Range (90% confident): 42.8% – 44.4%Based on 10K games
0%43.6%100%
Range (90% confident): 42.8% – 44.4%
Outcome Distribution
42.1%2.9%55.0%
Win
Draw
Loss
5...b6
Blackmar-Diemer Gambit Accepted: Ritter Defense
Analyzen=10K
Avg Length29 moves
Sharpness97%
Draw Rate2.9%

What is the Blackmar-Diemer Gambit Accepted: Ritter Defense expected score for Black?

Snapshot

At all ratings, the Blackmar-Diemer Gambit Accepted: Ritter Defense has a 43.6% expected score for Black (we're 90% confident it's between 42.8% and 44.4%), based on 10K Lichess games.

Black Win% by Rating

Stable across ratings (~44%)

0
1000
1200
1400
1600
1800
2000
2200
2500+

  • 0-999: 43.9% win rate (209 games)
  • 1000-1199: 41.3% win rate (416 games)
  • 1200-1399: 42.6% win rate (831 games)
  • 1400-1599: 43.1% win rate (1,429 games)
  • 1600-1799: 43.6% win rate (2,054 games)
  • 1800-1999: 40.7% win rate (2,562 games)
  • 2000-2199: 42.5% win rate (1,735 games)
  • 2200-2499: 38.7% win rate (726 games)
  • 2500+: 45.2% win rate (97 games)

Black Win% by Time Control

Best in UltraBullet (46%), worst in Rapid (41%)

UltraBullet
Bullet
Blitz
Rapid
Classical

  • UltraBullet: 45.5% win rate (4 games)
  • Bullet: 41.2% win rate (4,103 games)
  • Blitz: 43.2% win rate (4,743 games)
  • Rapid: 40.8% win rate (1,184 games)
  • Classical: 43.4% win rate (25 games)

Black% by Rating × Time Control

Click any cell to filter. Green = above 50%, Red = below 50%.

RatingUBBulleBlitzRapidClass
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: 45.7% expected score (44 games)
  • 0-999 rating, Blitz: 48.4% expected score (123 games)
  • 0-999 rating, Rapid: 42.0% expected score (42 games)
  • 1000-1199 rating, Bullet: 49.7% expected score (134 games)
  • 1000-1199 rating, Blitz: 39.1% expected score (213 games)
  • 1000-1199 rating, Rapid: 42.9% expected score (69 games)
  • 1200-1399 rating, UltraBullet: 30.0% expected score (1 games)
  • 1200-1399 rating, Bullet: 43.6% expected score (279 games)
  • 1200-1399 rating, Blitz: 44.0% expected score (404 games)
  • 1200-1399 rating, Rapid: 43.9% expected score (146 games)
  • 1200-1399 rating, Classical: 30.0% expected score (1 games)
  • 1400-1599 rating, Bullet: 45.5% expected score (467 games)
  • 1400-1599 rating, Blitz: 44.5% expected score (741 games)
  • 1400-1599 rating, Rapid: 41.1% expected score (217 games)
  • 1400-1599 rating, Classical: 50.0% expected score (4 games)
  • 1600-1799 rating, UltraBullet: 50.0% expected score (2 games)
  • 1600-1799 rating, Bullet: 44.5% expected score (760 games)
  • 1600-1799 rating, Blitz: 45.5% expected score (985 games)
  • 1600-1799 rating, Rapid: 42.8% expected score (296 games)
  • 1600-1799 rating, Classical: 58.0% expected score (11 games)
  • 1800-1999 rating, Bullet: 39.5% expected score (945 games)
  • 1800-1999 rating, Blitz: 44.7% expected score (1,316 games)
  • 1800-1999 rating, Rapid: 43.1% expected score (293 games)
  • 1800-1999 rating, Classical: 39.5% expected score (8 games)
  • 2000-2199 rating, Bullet: 41.8% expected score (848 games)
  • 2000-2199 rating, Blitz: 46.5% expected score (787 games)
  • 2000-2199 rating, Rapid: 43.6% expected score (99 games)
  • 2000-2199 rating, Classical: 50.0% expected score (1 games)
  • 2200-2499 rating, UltraBullet: 70.0% expected score (1 games)
  • 2200-2499 rating, Bullet: 39.9% expected score (537 games)
  • 2200-2499 rating, Blitz: 40.8% expected score (166 games)
  • 2200-2499 rating, Rapid: 45.8% expected score (22 games)
  • 2500+ rating, Bullet: 46.7% expected score (89 games)
  • 2500+ rating, Blitz: 44.7% expected score (8 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%
Analyze Blackmar-Diemer Gambit Accepted: Ritter Defense PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

What is the Blackmar-Diemer Gambit Accepted: Ritter Defense win rate?

The Blackmar-Diemer Gambit Accepted: Ritter Defense has a 55.0% (90% CI: 54.1%-55.8%) win rate for white, based on 10K rated games from Lichess.

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

The Blackmar-Diemer Gambit Accepted: Ritter Defense performs best at 2200-2499 Elo with a 58.1% win rate for white (726 games). Win rate tends to decline at higher ratings as opponents know the theory better.

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

Bullet (56.3%) outperforms Blitz (53.7%) by 2.6%. Choose your time control wisely.

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

The Blackmar-Diemer Gambit Accepted: Ritter Defense has a sharpness score of 97.1 (very decisive), meaning 97.1% of games end decisively. Average game length is 29 moves.

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

At 0-999 Elo, the Blackmar-Diemer Gambit Accepted: Ritter Defense has a 51.1% (90% CI: 45.4%-56.7%) win rate for white, based on 209 Lichess games. Average game length is 28 moves with a 5.0% draw rate.

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

At 1000-1199 Elo, the Blackmar-Diemer Gambit Accepted: Ritter Defense has a 55.2% (90% CI: 51.2%-59.2%) win rate for white, based on 416 Lichess games. Average game length is 27 moves with a 3.5% draw rate.

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

At 1200-1399 Elo, the Blackmar-Diemer Gambit Accepted: Ritter Defense has a 55.2% (90% CI: 52.4%-58.0%) win rate for white, based on 831 Lichess games. Average game length is 27 moves with a 2.2% draw rate.

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

At 1400-1599 Elo, the Blackmar-Diemer Gambit Accepted: Ritter Defense has a 54.5% (90% CI: 52.3%-56.7%) win rate for white, based on 1.4K Lichess games. Average game length is 27 moves with a 2.4% draw rate.

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

At 1600-1799 Elo, the Blackmar-Diemer Gambit Accepted: Ritter Defense has a 54.0% (90% CI: 52.2%-55.8%) win rate for white, based on 2.1K Lichess games. Average game length is 29 moves with a 2.5% draw rate.

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

At 1800-1999 Elo, the Blackmar-Diemer Gambit Accepted: Ritter Defense has a 55.6% (90% CI: 54.0%-57.3%) win rate for white, based on 2.6K Lichess games. Average game length is 30 moves with a 3.6% draw rate.

What is the Blackmar-Diemer Gambit Accepted: Ritter Defense win rate at 2000-2199 Elo?

At 2000-2199 Elo, the Blackmar-Diemer Gambit Accepted: Ritter Defense has a 54.5% (90% CI: 52.5%-56.5%) win rate for white, based on 1.7K Lichess games. Average game length is 31 moves with a 3.0% draw rate.

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

At 2200-2499 Elo, the Blackmar-Diemer Gambit Accepted: Ritter Defense has a 58.1% (90% CI: 55.1%-61.1%) win rate for white, based on 726 Lichess games. Average game length is 31 moves with a 3.2% draw rate.

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

In Bullet games, the Blackmar-Diemer Gambit Accepted: Ritter Defense has a 56.3% (90% CI: 55.1%-57.6%) win rate for white (4.1K Lichess games). Draw rate is 2.4%.

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

In Blitz games, the Blackmar-Diemer Gambit Accepted: Ritter Defense has a 53.7% (90% CI: 52.5%-54.9%) win rate for white (4.7K Lichess games). Draw rate is 3.2%.

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

In Rapid games, the Blackmar-Diemer Gambit Accepted: Ritter Defense has a 55.4% (90% CI: 53.0%-57.7%) win rate for white (1.2K Lichess games). Draw rate is 3.8%.

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

The Blackmar-Diemer Gambit Accepted: Ritter Defense is statistically favors white with a 55.0% (90% CI: 54.1%-55.8%) win rate across all ratings. It performs best at 2200-2499 Elo. Your results depend on your rating, time control, and how well you know the typical plans.