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Blackmar-Diemer Gambit Accepted: Pietrowsky Defense

184K games from Lichess · Updated January 2026

Tough Sell
Black Expected Score45.0%Range (90% confident): 44.9% – 45.2%Based on 184K games
0%45.0%100%
Range (90% confident): 44.9% – 45.2%
Outcome Distribution
43.4%3.2%53.4%
Win
Draw
Loss
5...Nc6
Blackmar-Diemer Gambit Accepted: Pietrowsky Defense
Analyzen=184K
Avg Length29 moves
Sharpness97%
Draw Rate3.2%

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

Snapshot

At all ratings, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 45.0% expected score for Black (we're 90% confident it's between 44.9% and 45.2%), based on 184K Lichess games.

Extra Analysis

Deep-dive datasets for this opening

Time-Control Swing

Max swing: 10.1% · UltraBullet best · Blitz worst

Black Win% by Rating

Declines with rating: 46% → 40%

0
1000
1200
1400
1600
1800
2000
2200
2500+

  • 0-999: 45.6% win rate (11,197 games)
  • 1000-1199: 43.4% win rate (23,478 games)
  • 1200-1399: 42.7% win rate (33,861 games)
  • 1400-1599: 43.3% win rate (39,227 games)
  • 1600-1799: 43.4% win rate (34,319 games)
  • 1800-1999: 43.8% win rate (24,923 games)
  • 2000-2199: 43.7% win rate (12,017 games)
  • 2200-2499: 42.6% win rate (4,505 games)
  • 2500+: 40.4% win rate (468 games)

Black Win% by Time Control

Best in Blitz (44%), worst in UltraBullet (36%)

UltraBullet
Bullet
Blitz
Rapid
Classical

  • UltraBullet: 36.0% win rate (275 games)
  • Bullet: 43.1% win rate (70,752 games)
  • Blitz: 44.0% win rate (75,649 games)
  • Rapid: 43.0% win rate (36,456 games)
  • Classical: 37.1% win rate (863 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, UltraBullet: 27.0% expected score (5 games)
  • 0-999 rating, Bullet: 46.9% expected score (3,544 games)
  • 0-999 rating, Blitz: 47.3% expected score (5,677 games)
  • 0-999 rating, Rapid: 48.6% expected score (1,964 games)
  • 0-999 rating, Classical: 44.2% expected score (7 games)
  • 1000-1199 rating, UltraBullet: 45.3% expected score (9 games)
  • 1000-1199 rating, Bullet: 44.7% expected score (7,024 games)
  • 1000-1199 rating, Blitz: 45.1% expected score (11,329 games)
  • 1000-1199 rating, Rapid: 45.2% expected score (5,086 games)
  • 1000-1199 rating, Classical: 32.6% expected score (30 games)
  • 1200-1399 rating, UltraBullet: 29.8% expected score (38 games)
  • 1200-1399 rating, Bullet: 43.9% expected score (10,309 games)
  • 1200-1399 rating, Blitz: 44.6% expected score (15,266 games)
  • 1200-1399 rating, Rapid: 44.0% expected score (8,119 games)
  • 1200-1399 rating, Classical: 41.2% expected score (129 games)
  • 1400-1599 rating, UltraBullet: 30.2% expected score (74 games)
  • 1400-1599 rating, Bullet: 44.2% expected score (11,750 games)
  • 1400-1599 rating, Blitz: 45.6% expected score (17,515 games)
  • 1400-1599 rating, Rapid: 44.3% expected score (9,620 games)
  • 1400-1599 rating, Classical: 39.1% expected score (268 games)
  • 1600-1799 rating, UltraBullet: 41.6% expected score (82 games)
  • 1600-1799 rating, Bullet: 44.2% expected score (13,069 games)
  • 1600-1799 rating, Blitz: 45.9% expected score (13,378 games)
  • 1600-1799 rating, Rapid: 45.3% expected score (7,502 games)
  • 1600-1799 rating, Classical: 39.3% expected score (288 games)
  • 1800-1999 rating, UltraBullet: 54.2% expected score (34 games)
  • 1800-1999 rating, Bullet: 44.7% expected score (12,073 games)
  • 1800-1999 rating, Blitz: 46.6% expected score (9,224 games)
  • 1800-1999 rating, Rapid: 45.2% expected score (3,474 games)
  • 1800-1999 rating, Classical: 40.4% expected score (118 games)
  • 2000-2199 rating, UltraBullet: 33.1% expected score (25 games)
  • 2000-2199 rating, Bullet: 44.4% expected score (8,442 games)
  • 2000-2199 rating, Blitz: 48.5% expected score (2,888 games)
  • 2000-2199 rating, Rapid: 46.9% expected score (639 games)
  • 2000-2199 rating, Classical: 35.7% expected score (23 games)
  • 2200-2499 rating, UltraBullet: 32.4% expected score (7 games)
  • 2200-2499 rating, Bullet: 44.5% expected score (4,084 games)
  • 2200-2499 rating, Blitz: 48.8% expected score (362 games)
  • 2200-2499 rating, Rapid: 52.8% expected score (52 games)
  • 2500+ rating, UltraBullet: 30.0% expected score (1 games)
  • 2500+ rating, Bullet: 43.6% expected score (457 games)
  • 2500+ rating, Blitz: 50.0% expected score (10 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: Gunderam Defense
46.8%
Analyze Blackmar-Diemer Gambit Accepted: Pietrowsky Defense PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

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

The Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 53.4% (90% CI: 53.2%-53.6%) win rate for white, based on 184K rated games from Lichess.

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

The Blackmar-Diemer Gambit Accepted: Pietrowsky Defense performs best at 1200-1399 Elo with a 54.3% win rate for white (34K games). Win rate tends to decline at higher ratings as opponents know the theory better.

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

UltraBullet (62.7%) outperforms Blitz (52.6%) by 10.1%. Choose your time control wisely.

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

The Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a sharpness score of 96.8 (very decisive), meaning 96.8% of games end decisively. Average game length is 29 moves.

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

At 0-999 Elo, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 50.9% (90% CI: 50.1%-51.7%) win rate for white, based on 11K Lichess games. Average game length is 26 moves with a 3.4% draw rate.

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

At 1000-1199 Elo, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 53.5% (90% CI: 53.0%-54.1%) win rate for white, based on 23K Lichess games. Average game length is 27 moves with a 3.1% draw rate.

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

At 1200-1399 Elo, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 54.3% (90% CI: 53.9%-54.8%) win rate for white, based on 34K Lichess games. Average game length is 28 moves with a 3.0% draw rate.

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

At 1400-1599 Elo, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 53.8% (90% CI: 53.4%-54.2%) win rate for white, based on 39K Lichess games. Average game length is 28 moves with a 2.9% draw rate.

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

At 1600-1799 Elo, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 53.4% (90% CI: 52.9%-53.8%) win rate for white, based on 34K Lichess games. Average game length is 30 moves with a 3.2% draw rate.

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

At 1800-1999 Elo, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 52.9% (90% CI: 52.4%-53.4%) win rate for white, based on 25K Lichess games. Average game length is 31 moves with a 3.3% draw rate.

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

At 2000-2199 Elo, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 52.8% (90% CI: 52.1%-53.6%) win rate for white, based on 12K Lichess games. Average game length is 32 moves with a 3.4% draw rate.

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

At 2200-2499 Elo, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 52.9% (90% CI: 51.7%-54.1%) win rate for white, based on 4.5K Lichess games. Average game length is 34 moves with a 4.5% draw rate.

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

At 2500+ Elo, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 53.1% (90% CI: 49.3%-56.9%) win rate for white, based on 468 Lichess games. Average game length is 39 moves with a 6.5% draw rate.

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

In UltraBullet games, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 62.7% (90% CI: 57.9%-67.5%) win rate for white (275 Lichess games). Draw rate is 1.3%.

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

In Bullet games, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 54.2% (90% CI: 53.9%-54.5%) win rate for white (71K Lichess games). Draw rate is 2.6%.

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

In Blitz games, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 52.6% (90% CI: 52.3%-52.9%) win rate for white (76K Lichess games). Draw rate is 3.4%.

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

In Rapid games, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 53.3% (90% CI: 52.8%-53.7%) win rate for white (36K Lichess games). Draw rate is 3.7%.

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

In Classical games, the Blackmar-Diemer Gambit Accepted: Pietrowsky Defense has a 58.6% (90% CI: 55.8%-61.3%) win rate for white (863 Lichess games). Draw rate is 4.3%.

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

The Blackmar-Diemer Gambit Accepted: Pietrowsky Defense is statistically favors white with a 53.4% (90% CI: 53.2%-53.6%) 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.