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Blackmar-Diemer Gambit: Diemer-Rosenberg Attack

114K games from Lichess · Updated January 2026

Playable
White Expected Score49.4%Range (90% confident): 49.2% – 49.7%Based on 114K games
0%49.4%100%
Range (90% confident): 49.2% – 49.7%
Outcome Distribution
47.8%3.1%49.1%
Win
Draw
Loss
3.Be3
Blackmar-Diemer Gambit: Diemer-Rosenberg Attack
Analyzen=114K
Avg Length32 moves
Sharpness97%
Draw Rate3.1%

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack expected score for White?

Snapshot

At all ratings, the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 49.4% expected score for White (we're 90% confident it's between 49.2% and 49.7%), based on 114K Lichess games.

Extra Analysis

Deep-dive datasets for this opening

Gambit BreakpointWhite

Peak: -1.0% · Breakpoint: 0-999

Time-Control Swing

Max swing: 9.3% · UltraBullet best · Classical worst

White Win% by Rating

Declines with rating: 46% → 38%

0
1000
1200
1400
1600
1800
2000
2200
2500+

  • 0-999: 45.6% win rate (10,536 games)
  • 1000-1199: 47.4% win rate (14,367 games)
  • 1200-1399: 48.7% win rate (18,333 games)
  • 1400-1599: 48.0% win rate (21,607 games)
  • 1600-1799: 48.5% win rate (20,659 games)
  • 1800-1999: 47.9% win rate (15,905 games)
  • 2000-2199: 48.2% win rate (9,857 games)
  • 2200-2499: 45.3% win rate (2,680 games)
  • 2500+: 37.8% win rate (21 games)

White Win% by Time Control

Best in UltraBullet (53%), worst in Classical (43%)

UltraBullet
Bullet
Blitz
Rapid
Classical

  • UltraBullet: 52.6% win rate (3,571 games)
  • Bullet: 48.8% win rate (54,111 games)
  • Blitz: 47.1% win rate (44,142 games)
  • Rapid: 45.1% win rate (11,693 games)
  • Classical: 43.3% win rate (448 games)

White% 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, UltraBullet: 50.0% expected score (20 games)
  • 0-999 rating, Bullet: 48.7% expected score (3,303 games)
  • 0-999 rating, Blitz: 47.3% expected score (5,243 games)
  • 0-999 rating, Rapid: 44.5% expected score (1,949 games)
  • 0-999 rating, Classical: 63.4% expected score (21 games)
  • 1000-1199 rating, UltraBullet: 54.3% expected score (22 games)
  • 1000-1199 rating, Bullet: 50.9% expected score (5,157 games)
  • 1000-1199 rating, Blitz: 48.3% expected score (6,578 games)
  • 1000-1199 rating, Rapid: 46.8% expected score (2,540 games)
  • 1000-1199 rating, Classical: 34.7% expected score (70 games)
  • 1200-1399 rating, UltraBullet: 49.1% expected score (54 games)
  • 1200-1399 rating, Bullet: 52.3% expected score (9,114 games)
  • 1200-1399 rating, Blitz: 47.5% expected score (6,207 games)
  • 1200-1399 rating, Rapid: 49.0% expected score (2,816 games)
  • 1200-1399 rating, Classical: 47.3% expected score (142 games)
  • 1400-1599 rating, UltraBullet: 49.1% expected score (104 games)
  • 1400-1599 rating, Bullet: 50.5% expected score (10,186 games)
  • 1400-1599 rating, Blitz: 49.1% expected score (8,964 games)
  • 1400-1599 rating, Rapid: 46.7% expected score (2,191 games)
  • 1400-1599 rating, Classical: 46.0% expected score (162 games)
  • 1600-1799 rating, UltraBullet: 54.7% expected score (3,183 games)
  • 1600-1799 rating, Bullet: 48.6% expected score (6,942 games)
  • 1600-1799 rating, Blitz: 49.7% expected score (8,935 games)
  • 1600-1799 rating, Rapid: 48.2% expected score (1,556 games)
  • 1600-1799 rating, Classical: 45.5% expected score (43 games)
  • 1800-1999 rating, UltraBullet: 44.1% expected score (167 games)
  • 1800-1999 rating, Bullet: 49.3% expected score (8,476 games)
  • 1800-1999 rating, Blitz: 50.7% expected score (6,749 games)
  • 1800-1999 rating, Rapid: 46.3% expected score (503 games)
  • 1800-1999 rating, Classical: 76.1% expected score (10 games)
  • 2000-2199 rating, UltraBullet: 40.7% expected score (20 games)
  • 2000-2199 rating, Bullet: 49.5% expected score (8,347 games)
  • 2000-2199 rating, Blitz: 51.9% expected score (1,367 games)
  • 2000-2199 rating, Rapid: 49.6% expected score (123 games)
  • 2200-2499 rating, UltraBullet: 70.0% expected score (1 games)
  • 2200-2499 rating, Bullet: 47.2% expected score (2,567 games)
  • 2200-2499 rating, Blitz: 52.0% expected score (97 games)
  • 2200-2499 rating, Rapid: 59.1% expected score (15 games)
  • 2500+ rating, Bullet: 40.3% expected score (19 games)
  • 2500+ rating, Blitz: 50.0% expected score (2 games)

Related Openings

Parent
Blackmar-Diemer Gambit
48.0%
Variations (5)
Blackmar-Diemer Gambit: Blackmar Gambit
50.9%
Blackmar-Diemer Gambit: Fritz Attack
46.2%
Blackmar-Diemer Gambit: Lemberger Countergambit
44.4%
Blackmar-Diemer Gambit: Lemberger Countergambit, Endgame Variation
45.9%
Blackmar-Diemer Gambit: Lemberger Countergambit, Lange Gambit
48.1%
Analyze Blackmar-Diemer Gambit: Diemer-Rosenberg Attack PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack win rate?

The Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 47.8% (90% CI: 47.6%-48.1%) win rate for white, based on 114K rated games from Lichess.

At what rating does the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack perform best?

The Blackmar-Diemer Gambit: Diemer-Rosenberg Attack performs best at 1200-1399 Elo with a 48.7% win rate for white (18K games). Win rate tends to decline at higher ratings as opponents know the theory better.

Is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack better in blitz or rapid?

UltraBullet (52.6%) outperforms Classical (43.3%) by 9.3%. Choose your time control wisely.

How sharp is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack?

The Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a sharpness score of 96.9 (very decisive), meaning 96.9% of games end decisively. Average game length is 32 moves.

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack win rate at 0-999 Elo?

At 0-999 Elo, the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 45.6% (90% CI: 44.8%-46.4%) win rate for white, based on 11K Lichess games. Average game length is 27 moves with a 3.3% draw rate.

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack win rate at 1000-1199 Elo?

At 1000-1199 Elo, the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 47.4% (90% CI: 46.7%-48.1%) win rate for white, based on 14K Lichess games. Average game length is 29 moves with a 2.9% draw rate.

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack win rate at 1200-1399 Elo?

At 1200-1399 Elo, the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 48.7% (90% CI: 48.1%-49.3%) win rate for white, based on 18K Lichess games. Average game length is 31 moves with a 2.8% draw rate.

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack win rate at 1400-1599 Elo?

At 1400-1599 Elo, the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 48.0% (90% CI: 47.4%-48.5%) win rate for white, based on 22K Lichess games. Average game length is 32 moves with a 3.0% draw rate.

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack win rate at 1600-1799 Elo?

At 1600-1799 Elo, the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 48.5% (90% CI: 47.9%-49.1%) win rate for white, based on 21K Lichess games. Average game length is 33 moves with a 2.9% draw rate.

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack win rate at 1800-1999 Elo?

At 1800-1999 Elo, the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 47.9% (90% CI: 47.3%-48.6%) win rate for white, based on 16K Lichess games. Average game length is 34 moves with a 3.6% draw rate.

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack win rate at 2000-2199 Elo?

At 2000-2199 Elo, the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 48.2% (90% CI: 47.4%-49.0%) win rate for white, based on 9.9K Lichess games. Average game length is 34 moves with a 3.1% draw rate.

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack win rate at 2200-2499 Elo?

At 2200-2499 Elo, the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 45.3% (90% CI: 43.7%-46.9%) win rate for white, based on 2.7K Lichess games. Average game length is 37 moves with a 4.2% draw rate.

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack win rate in UltraBullet?

In UltraBullet games, the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 52.6% (90% CI: 51.2%-54.0%) win rate for white (3.6K Lichess games). Draw rate is 2.6%.

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack win rate in Bullet?

In Bullet games, the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 48.8% (90% CI: 48.4%-49.1%) win rate for white (54K Lichess games). Draw rate is 2.3%.

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack win rate in Blitz?

In Blitz games, the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 47.1% (90% CI: 46.7%-47.5%) win rate for white (44K Lichess games). Draw rate is 3.8%.

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack win rate in Rapid?

In Rapid games, the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 45.1% (90% CI: 44.3%-45.8%) win rate for white (12K Lichess games). Draw rate is 4.0%.

What is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack win rate in Classical?

In Classical games, the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack has a 43.3% (90% CI: 39.4%-47.1%) win rate for white (448 Lichess games). Draw rate is 5.7%.

Is the Blackmar-Diemer Gambit: Diemer-Rosenberg Attack a good opening?

The Blackmar-Diemer Gambit: Diemer-Rosenberg Attack is statistically balanced with a 47.8% (90% CI: 47.6%-48.1%) win rate across all ratings. It performs best at 1200-1399 Elo. Your results depend on your rating, time control, and how well you know the typical plans.