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Blackmar-Diemer Gambit

45 variations · 9.4M games from Lichess · Updated January 2026

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3...Nf6
Analyze this line move by move

White expected score · Overall

52.7%

45%60%
Floor52.7%

the worst score you would still get, 90% confident. Its best is the same figure — the band is too tight to plot.

Measured over 9.4M games at this level and clock.

Play Thiswins clearly more often than it loses at this level

A strong opening choice for White at this level and clock.

Outcomes for White

Draw 3.3 · Score = win + ½ of the draws · 9.4M games

Rank among the families White can choose here
#16 of 56
Games in this context
9.4M
Best context
58.1% at 2500+ Blitz
Worst context
36.1% at 0-999 Classical
Variations measured
45
Average game length
30 moves

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.

Where it holds · White score by rating × clock

Green is clearly ahead for White, grey is around even, red is behind. Tap a cell to measure there, and again to clear. It gets better as the rating rises: 44.7% at 0-999, 56.1% at 2500+.

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: 47.8% expected score (1,454 games)
  • 0-999 rating, Bullet: 48.5% expected score (154,982 games)
  • 0-999 rating, Blitz: 47.0% expected score (319,633 games)
  • 0-999 rating, Rapid: 44.1% expected score (159,450 games)
  • 0-999 rating, Classical: 36.1% expected score (1,639 games)
  • 1000-1199 rating, UltraBullet: 50.2% expected score (3,025 games)
  • 1000-1199 rating, Bullet: 51.9% expected score (234,052 games)
  • 1000-1199 rating, Blitz: 51.1% expected score (393,327 games)
  • 1000-1199 rating, Rapid: 48.8% expected score (174,052 games)
  • 1000-1199 rating, Classical: 41.5% expected score (4,031 games)
  • 1200-1399 rating, UltraBullet: 48.4% expected score (6,220 games)
  • 1200-1399 rating, Bullet: 52.7% expected score (368,655 games)
  • 1200-1399 rating, Blitz: 52.6% expected score (529,030 games)
  • 1200-1399 rating, Rapid: 51.7% expected score (220,193 games)
  • 1200-1399 rating, Classical: 46.3% expected score (6,826 games)
  • 1400-1599 rating, UltraBullet: 48.1% expected score (17,380 games)
  • 1400-1599 rating, Bullet: 52.6% expected score (503,072 games)
  • 1400-1599 rating, Blitz: 53.3% expected score (745,842 games)
  • 1400-1599 rating, Rapid: 52.3% expected score (276,579 games)
  • 1400-1599 rating, Classical: 43.8% expected score (11,261 games)
  • 1600-1799 rating, UltraBullet: 50.4% expected score (24,256 games)
  • 1600-1799 rating, Bullet: 53.2% expected score (649,416 games)
  • 1600-1799 rating, Blitz: 53.7% expected score (834,402 games)
  • 1600-1799 rating, Rapid: 53.6% expected score (309,277 games)
  • 1600-1799 rating, Classical: 52.8% expected score (11,412 games)
  • 1800-1999 rating, UltraBullet: 49.5% expected score (9,603 games)
  • 1800-1999 rating, Bullet: 53.4% expected score (722,012 games)
  • 1800-1999 rating, Blitz: 54.1% expected score (796,408 games)
  • 1800-1999 rating, Rapid: 53.7% expected score (237,699 games)
  • 1800-1999 rating, Classical: 53.2% expected score (7,510 games)
  • 2000-2199 rating, UltraBullet: 49.8% expected score (3,273 games)
  • 2000-2199 rating, Bullet: 53.7% expected score (601,724 games)
  • 2000-2199 rating, Blitz: 54.3% expected score (398,450 games)
  • 2000-2199 rating, Rapid: 54.3% expected score (81,861 games)
  • 2000-2199 rating, Classical: 56.0% expected score (1,974 games)
  • 2200-2499 rating, UltraBullet: 52.1% expected score (1,112 games)
  • 2200-2499 rating, Bullet: 54.0% expected score (365,562 games)
  • 2200-2499 rating, Blitz: 54.5% expected score (98,825 games)
  • 2200-2499 rating, Rapid: 56.7% expected score (12,920 games)
  • 2200-2499 rating, Classical: 61.8% expected score (109 games)
  • 2500+ rating, UltraBullet: 59.9% expected score (130 games)
  • 2500+ rating, Bullet: 54.6% expected score (59,898 games)
  • 2500+ rating, Blitz: 58.1% expected score (6,360 games)
  • 2500+ rating, Rapid: 57.7% expected score (96 games)
  • 2500+ rating, Classical: 50.0% expected score (1 games)

45 variations · ranked by floor

Floor — the worst score you would still get, 90% confident.

1
Blackmar-Diemer Gambit Accepted: Teichmann Defense, Ciesielski Variation9.6K games
63.2%Floor 62.4%
2
Blackmar-Diemer Gambit Accepted: Euwe Defense486K games
60.2%Floor 60.1%
3
Blackmar-Diemer Gambit Accepted: Teichmann Defense, Seidel-Hall Attack7.0K games
59.4%Floor 58.4%
Blackmar-Diemer Gambit Accepted: Teichmann Defense, Classical Variation45K games
58.4%Floor 58.1%
Blackmar-Diemer Gambit Accepted: Ziegler Defense220K games
56.9%Floor 56.7%
Blackmar-Diemer Gambit Declined: Weinsbach Defense280K games
56.6%Floor 56.5%
Blackmar-Diemer Gambit: Lemberger Countergambit, Sneiders Attack10K games
57.0%Floor 56.2%
Blackmar-Diemer Gambit Accepted: Ritter Defense10K games
56.5%Floor 55.6%
Blackmar-Diemer Gambit Accepted: Ryder Gambit612K games
55.6%Floor 55.5%
Blackmar-Diemer Gambit: Netherlands Variation514K games
55.6%Floor 55.5%
Blackmar-Diemer Gambit Accepted: Pietrowsky Defense184K games
55.0%Floor 54.8%
Blackmar-Diemer Gambit Accepted: Teichmann Defense503K games
54.9%Floor 54.8%
Blackmar-Diemer Gambit Declined: O'Kelly Defense258K games
55.0%Floor 54.8%
Blackmar-Diemer Gambit Accepted: Schlutter Defense5.9K games
55.8%Floor 54.7%
Blackmar-Diemer Gambit: Lemberger Countergambit, Rasmussen Attack4.6K games
55.5%Floor 54.3%
Blackmar-Diemer Gambit: Zeller Defense440K games
54.3%Floor 54.2%
Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Studier Attack7.6K games
53.8%Floor 52.9%
Blackmar-Diemer Gambit: von Popiel Gambit652K games
52.8%Floor 52.7%
Blackmar-Diemer Gambit: Blackmar Gambit1.1M games
52.5%Floor 52.4%
Blackmar-Diemer Gambit Declined: Gedult Defense4.0K games
53.7%Floor 52.4%
Blackmar-Diemer Gambit Accepted59K games
52.7%Floor 52.3%
Blackmar-Diemer Gambit Accepted: Kaulich Defense19K games
53.0%Floor 52.3%
Blackmar-Diemer Gambit Accepted: Euwe Defense, Zilbermints Gambit308 games
56.0%Floor 51.3%
Blackmar-Diemer Gambit Declined: Langeheinicke Defense62K games
51.6%Floor 51.3%
Blackmar-Diemer Gambit Declined: Vienna Defense281K games
51.0%Floor 50.9%
Blackmar-Diemer Gambit Accepted: Holwell Defense1.2K games
52.6%Floor 50.2%
Blackmar-Diemer Gambit: Rasa-Studier Gambit131K games
50.1%Floor 49.9%
Blackmar-Diemer Gambit: Lemberger Countergambit, Lange Gambit53K games
50.2%Floor 49.8%
Blackmar-Diemer Gambit: Reversed Albin Countergambit100K games
50.1%Floor 49.8%
Blackmar-Diemer Gambit2.3M games
49.7%Floor 49.6%
Blackmar-Diemer Gambit Declined: Elbert Countergambit55K games
49.9%Floor 49.6%
Blackmar-Diemer Gambit Declined: Lamb Defense171K games
49.7%Floor 49.5%
Blackmar-Diemer Gambit: Lemberger Countergambit, Soller Attack13K games
50.1%Floor 49.4%
Blackmar-Diemer Gambit Declined: Brombacher Countergambit39K games
49.7%Floor 49.3%
Blackmar-Diemer Gambit: Diemer-Rosenberg Attack114K games
49.4%Floor 49.2%
Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Mad Dog Attack740 games
51.8%Floor 48.8%
Blackmar-Diemer Gambit: Lemberger Countergambit, Endgame Variation56K games
49.0%Floor 48.7%
Blackmar-Diemer Gambit Accepted: Bogoljubow Defense61K games
48.8%Floor 48.5%
Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Nimzowitsch Attack3.6K games
49.7%Floor 48.4%
Blackmar-Diemer Gambit Accepted: Gunderam Defense92K games
48.7%Floor 48.4%
Blackmar-Diemer Gambit: Zeller Defense, Soller Attack38K games
48.5%Floor 48.1%
Blackmar-Diemer Gambit: Fritz Attack241K games
47.8%Floor 47.7%
Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Kloss Attack924 games
49.7%Floor 47.0%
Blackmar-Diemer Gambit Accepted: Gunderam Defense, Stader Variation1.1K games
49.3%Floor 46.9%
Blackmar-Diemer Gambit: Lemberger Countergambit123K games
46.2%Floor 46.0%
Analyze Blackmar-Diemer Gambit PositionsSee what each move is worth at your rating, move by move

Methodology

Across every rating and clock, the Blackmar-Diemer Gambit family scores 52.7% for White — we are 90% confident it is 52.7% — from 9.4M Lichess games across 45 variations. 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
9.4M+ 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 win rate?

Across the Blackmar-Diemer Gambit's 45 variations, White wins 51.0%, draws 3.3% and loses 45.7%. Counting a draw as half a point, that is an Expected Score of 52.7%. It rests on 9.4M rated games from Lichess.

How many Blackmar-Diemer Gambit variations are there?

45 Blackmar-Diemer Gambit variations have a page of their own, each broken down by rating and by clock.

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

The Blackmar-Diemer Gambit family performs best for White at 2500+, with an Expected Score of 54.9% (66K games) and the highest Floor of any rating with enough games to read. Performance may vary by specific variation.

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

For White, the Blackmar-Diemer Gambit scores higher in Blitz: an Expected Score of 52.9% in Blitz (4.1M games) against 51.5% in Rapid (1.5M games).

How sharp is the Blackmar-Diemer Gambit?

Blackmar-Diemer Gambit games are 96.7% decisive (non-draws), with an average length of 30 moves. Sharpness varies by specific variation.

Is the Blackmar-Diemer Gambit a good opening family?

The Blackmar-Diemer Gambit family is good for White overall. Across its games, White wins 51.0% and loses 45.7%. Results differ between its 45 variations, so open the one you play for its own figures.