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Blackmar-Diemer Gambit: Lemberger Countergambit

123K games from Lichess · Updated January 2026

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Analyze this line move by move

Black expected score · All ratings · All speeds

53.8%

45%60%
Floor53.6%

the worst score you would still get, 90% confident. At best 54.1%.

Measured over 123K games at this level and clock.

Play Thiswins clearly more often than it loses at this level

A strong choice for Black at this level and clock.

Outcomes for Black

Draw 3.6 · Score = win + ½ of the draws · 123K games

Rank among the families Black can choose here
not ranked — this is a variation, not a family
Games in this context
123K
Best context
56.2% at 1600-1799 Rapid
Worst context
48.3% at 0-999 Rapid
Average game length
32 moves
Games that end decisively
96.4%
Draws
3.6%

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

Gambit BreakpointBlack

Peak: +9.4% · Breakpoint: 0-999

Traps & Chaos

Complexity: 90.3 · Trap factor: +2.6 · 123K games

Time-Control Swing

Max swing: 12.1% · UltraBullet 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: 55.1% at 0-999, 47.8% 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: 50.0% expected score (6 games)
  • 0-999 rating, Bullet: 51.8% expected score (708 games)
  • 0-999 rating, Blitz: 52.1% expected score (1,327 games)
  • 0-999 rating, Rapid: 48.3% expected score (588 games)
  • 0-999 rating, Classical: 73.1% expected score (5 games)
  • 1000-1199 rating, UltraBullet: 42.7% expected score (26 games)
  • 1000-1199 rating, Bullet: 50.2% expected score (1,541 games)
  • 1000-1199 rating, Blitz: 51.2% expected score (2,316 games)
  • 1000-1199 rating, Rapid: 50.8% expected score (845 games)
  • 1000-1199 rating, Classical: 52.5% expected score (19 games)
  • 1200-1399 rating, UltraBullet: 54.9% expected score (71 games)
  • 1200-1399 rating, Bullet: 53.1% expected score (2,976 games)
  • 1200-1399 rating, Blitz: 52.9% expected score (4,353 games)
  • 1200-1399 rating, Rapid: 54.1% expected score (1,503 games)
  • 1200-1399 rating, Classical: 50.0% expected score (38 games)
  • 1400-1599 rating, UltraBullet: 49.0% expected score (201 games)
  • 1400-1599 rating, Bullet: 52.7% expected score (4,605 games)
  • 1400-1599 rating, Blitz: 54.4% expected score (8,290 games)
  • 1400-1599 rating, Rapid: 53.3% expected score (2,658 games)
  • 1400-1599 rating, Classical: 52.5% expected score (60 games)
  • 1600-1799 rating, UltraBullet: 46.5% expected score (382 games)
  • 1600-1799 rating, Bullet: 54.8% expected score (7,620 games)
  • 1600-1799 rating, Blitz: 54.7% expected score (12,080 games)
  • 1600-1799 rating, Rapid: 56.2% expected score (3,969 games)
  • 1600-1799 rating, Classical: 54.0% expected score (123 games)
  • 1800-1999 rating, UltraBullet: 45.4% expected score (193 games)
  • 1800-1999 rating, Bullet: 53.6% expected score (11,215 games)
  • 1800-1999 rating, Blitz: 55.6% expected score (13,749 games)
  • 1800-1999 rating, Rapid: 56.1% expected score (3,696 games)
  • 1800-1999 rating, Classical: 63.7% expected score (104 games)
  • 2000-2199 rating, UltraBullet: 43.7% expected score (54 games)
  • 2000-2199 rating, Bullet: 52.9% expected score (13,613 games)
  • 2000-2199 rating, Blitz: 54.8% expected score (8,217 games)
  • 2000-2199 rating, Rapid: 54.5% expected score (1,351 games)
  • 2000-2199 rating, Classical: 63.8% expected score (24 games)
  • 2200-2499 rating, UltraBullet: 27.5% expected score (14 games)
  • 2200-2499 rating, Bullet: 52.9% expected score (10,085 games)
  • 2200-2499 rating, Blitz: 53.0% expected score (2,281 games)
  • 2200-2499 rating, Rapid: 53.3% expected score (167 games)
  • 2200-2499 rating, Classical: 70.0% expected score (1 games)
  • 2500+ rating, UltraBullet: 50.0% expected score (2 games)
  • 2500+ rating, Bullet: 50.7% expected score (1,883 games)
  • 2500+ rating, Blitz: 42.8% expected score (75 games)

Related Openings

Parent
Blackmar-Diemer Gambit
48.0%
Variations (5)
Blackmar-Diemer Gambit: Blackmar Gambit
50.9%
Blackmar-Diemer Gambit: von Popiel Gambit
51.0%
Blackmar-Diemer Gambit: Netherlands Variation
54.1%
Blackmar-Diemer Gambit: Zeller Defense
52.7%
Blackmar-Diemer Gambit: Fritz Attack
46.2%
Continuations (5)
Blackmar-Diemer Gambit: Lemberger Countergambit, Endgame Variation
45.9%
Blackmar-Diemer Gambit: Lemberger Countergambit, Lange Gambit
48.1%
Blackmar-Diemer Gambit: Lemberger Countergambit, Soller Attack
47.8%
Blackmar-Diemer Gambit: Lemberger Countergambit, Sneiders Attack
55.4%
Blackmar-Diemer Gambit: Lemberger Countergambit, Rasmussen Attack
52.9%
Analyze Blackmar-Diemer Gambit: Lemberger Countergambit PositionsSee what each move is worth at your rating, move by move

Methodology

Across every rating and clock, the Blackmar-Diemer Gambit: Lemberger Countergambit scores 53.8% for Black — we are 90% confident the real figure is between 53.6% and 54.1% — from 123K 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
123K+ 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: Lemberger Countergambit win rate?

Playing the Blackmar-Diemer Gambit: Lemberger Countergambit, Black wins 52.0%, draws 3.6% and loses 44.4%. Counting a draw as half a point, that is an Expected Score of 53.8%. It rests on 123K rated games from Lichess.

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

The Blackmar-Diemer Gambit: Lemberger Countergambit performs best for Black at 1600-1799, with an Expected Score of 54.8% (24K games) and the highest Floor of any rating with enough games to read.

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

For Black, the Blackmar-Diemer Gambit: Lemberger Countergambit scores about the same in both: an Expected Score of 54.4% in Blitz (53K games) against 54.6% in Rapid (15K games).

How sharp is the Blackmar-Diemer Gambit: Lemberger Countergambit?

The Blackmar-Diemer Gambit: Lemberger Countergambit has a sharpness score of 96.4 (very decisive), meaning 96.4% of games end decisively. Average game length is 32 moves.

What is the Blackmar-Diemer Gambit: Lemberger Countergambit win rate at 0-999?

At 0-999, Black wins 49.2%, draws 4.2% and loses 46.7%. Counting a draw as half a point, that is an Expected Score of 51.3%. It rests on 2.6K Lichess games, which average 26 moves.

What is the Blackmar-Diemer Gambit: Lemberger Countergambit win rate at 1000-1199?

At 1000-1199, Black wins 49.2%, draws 3.1% and loses 47.7%. Counting a draw as half a point, that is an Expected Score of 50.8%. It rests on 4.7K Lichess games, which average 27 moves.

What is the Blackmar-Diemer Gambit: Lemberger Countergambit win rate at 1200-1399?

At 1200-1399, Black wins 51.6%, draws 3.0% and loses 45.4%. Counting a draw as half a point, that is an Expected Score of 53.1%. It rests on 8.9K Lichess games, which average 29 moves.

What is the Blackmar-Diemer Gambit: Lemberger Countergambit win rate at 1400-1599?

At 1400-1599, Black wins 52.2%, draws 2.8% and loses 44.9%. Counting a draw as half a point, that is an Expected Score of 53.7%. It rests on 16K Lichess games, which average 30 moves.

What is the Blackmar-Diemer Gambit: Lemberger Countergambit win rate at 1600-1799?

At 1600-1799, Black wins 53.1%, draws 3.3% and loses 43.5%. Counting a draw as half a point, that is an Expected Score of 54.8%. It rests on 24K Lichess games, which average 31 moves.

What is the Blackmar-Diemer Gambit: Lemberger Countergambit win rate at 1800-1999?

At 1800-1999, Black wins 52.9%, draws 3.8% and loses 43.3%. Counting a draw as half a point, that is an Expected Score of 54.8%. It rests on 29K Lichess games, which average 32 moves.

What is the Blackmar-Diemer Gambit: Lemberger Countergambit win rate at 2000-2199?

At 2000-2199, Black wins 51.7%, draws 4.0% and loses 44.4%. Counting a draw as half a point, that is an Expected Score of 53.7%. It rests on 23K Lichess games, which average 33 moves.

What is the Blackmar-Diemer Gambit: Lemberger Countergambit win rate at 2200-2499?

At 2200-2499, Black wins 50.9%, draws 4.0% and loses 45.2%. Counting a draw as half a point, that is an Expected Score of 52.9%. It rests on 13K Lichess games, which average 35 moves.

What is the Blackmar-Diemer Gambit: Lemberger Countergambit win rate at 2500+?

At 2500+, Black wins 47.8%, draws 5.0% and loses 47.2%. Counting a draw as half a point, that is an Expected Score of 50.3%. It rests on 2.0K Lichess games, which average 37 moves.

What is the Blackmar-Diemer Gambit: Lemberger Countergambit win rate in UltraBullet?

In UltraBullet, Black wins 46.1%, draws 1.4% and loses 52.4%. Counting a draw as half a point, that is an Expected Score of 46.9%. It rests on 949 Lichess games.

What is the Blackmar-Diemer Gambit: Lemberger Countergambit win rate in Bullet?

In Bullet, Black wins 51.6%, draws 2.9% and loses 45.5%. Counting a draw as half a point, that is an Expected Score of 53.1%. It rests on 54K Lichess games.

What is the Blackmar-Diemer Gambit: Lemberger Countergambit win rate in Blitz?

In Blitz, Black wins 52.4%, draws 4.0% and loses 43.6%. Counting a draw as half a point, that is an Expected Score of 54.4%. It rests on 53K Lichess games.

What is the Blackmar-Diemer Gambit: Lemberger Countergambit win rate in Rapid?

In Rapid, Black wins 52.4%, draws 4.4% and loses 43.2%. Counting a draw as half a point, that is an Expected Score of 54.6%. It rests on 15K Lichess games.

What is the Blackmar-Diemer Gambit: Lemberger Countergambit win rate in Classical?

In Classical, Black wins 54.7%, draws 4.9% and loses 40.3%. Counting a draw as half a point, that is an Expected Score of 57.2%. It rests on 374 Lichess games.

Is the Blackmar-Diemer Gambit: Lemberger Countergambit a good opening?

The Blackmar-Diemer Gambit: Lemberger Countergambit is good for Black. Across all ratings, Black wins 52.0% of its games and loses 44.4%. It performs best at 1600-1799. Your results depend on your rating, time control, and how well you know the typical plans.