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Semi-Slav Defense: Noteboom Variation

357K games from Lichess · Updated January 2026

Playable
Black Expected Score48.4%Range (90% confident): 48.2% – 48.5%Based on 357K games
0%48.4%100%
Range (90% confident): 48.2% – 48.5%
Outcome Distribution
46.5%3.7%49.8%
Win
Draw
Loss
4...dxc4
Semi-Slav Defense: Noteboom Variation
Analyzen=357K
Avg Length34 moves
Sharpness96%
Draw Rate3.7%

What is the Semi-Slav Defense: Noteboom Variation expected score for Black?

Snapshot

At all ratings, the Semi-Slav Defense: Noteboom Variation has a 48.4% expected score for Black (we're 90% confident it's between 48.2% and 48.5%), based on 357K Lichess games.

Extra Analysis

Deep-dive datasets for this opening

Time-Control Swing

Max swing: 10.4% · UltraBullet best · Classical worst

Black Win% by Rating

Stable across ratings (~44%)

0
1000
1200
1400
1600
1800
2000
2200
2500+

  • 0-999: 44.0% win rate (3,153 games)
  • 1000-1199: 43.4% win rate (9,151 games)
  • 1200-1399: 43.8% win rate (19,792 games)
  • 1400-1599: 45.2% win rate (36,938 games)
  • 1600-1799: 46.3% win rate (64,235 games)
  • 1800-1999: 47.2% win rate (89,232 games)
  • 2000-2199: 47.6% win rate (81,354 games)
  • 2200-2499: 46.6% win rate (46,316 games)
  • 2500+: 44.6% win rate (6,775 games)

Black Win% by Time Control

Best in Blitz (47%), worst in UltraBullet (40%)

UltraBullet
Bullet
Blitz
Rapid
Classical

  • UltraBullet: 39.6% win rate (951 games)
  • Bullet: 46.0% win rate (140,584 games)
  • Blitz: 47.1% win rate (181,252 games)
  • Rapid: 45.5% win rate (32,978 games)
  • Classical: 45.5% win rate (1,181 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: 51.3% expected score (36 games)
  • 0-999 rating, Bullet: 46.4% expected score (1,317 games)
  • 0-999 rating, Blitz: 44.9% expected score (1,459 games)
  • 0-999 rating, Rapid: 42.0% expected score (340 games)
  • 0-999 rating, Classical: 30.0% expected score (1 games)
  • 1000-1199 rating, UltraBullet: 40.3% expected score (55 games)
  • 1000-1199 rating, Bullet: 46.4% expected score (4,168 games)
  • 1000-1199 rating, Blitz: 43.4% expected score (3,880 games)
  • 1000-1199 rating, Rapid: 42.4% expected score (1,040 games)
  • 1000-1199 rating, Classical: 50.0% expected score (8 games)
  • 1200-1399 rating, UltraBullet: 39.6% expected score (94 games)
  • 1200-1399 rating, Bullet: 46.0% expected score (9,257 games)
  • 1200-1399 rating, Blitz: 44.9% expected score (8,223 games)
  • 1200-1399 rating, Rapid: 43.2% expected score (2,169 games)
  • 1200-1399 rating, Classical: 40.1% expected score (49 games)
  • 1400-1599 rating, UltraBullet: 37.5% expected score (285 games)
  • 1400-1599 rating, Bullet: 46.8% expected score (16,566 games)
  • 1400-1599 rating, Blitz: 47.0% expected score (16,324 games)
  • 1400-1599 rating, Rapid: 45.8% expected score (3,593 games)
  • 1400-1599 rating, Classical: 40.7% expected score (170 games)
  • 1600-1799 rating, UltraBullet: 43.8% expected score (254 games)
  • 1600-1799 rating, Bullet: 47.0% expected score (26,422 games)
  • 1600-1799 rating, Blitz: 48.6% expected score (30,426 games)
  • 1600-1799 rating, Rapid: 48.9% expected score (6,828 games)
  • 1600-1799 rating, Classical: 52.3% expected score (305 games)
  • 1800-1999 rating, UltraBullet: 39.2% expected score (165 games)
  • 1800-1999 rating, Bullet: 47.3% expected score (31,399 games)
  • 1800-1999 rating, Blitz: 50.2% expected score (47,570 games)
  • 1800-1999 rating, Rapid: 49.6% expected score (9,644 games)
  • 1800-1999 rating, Classical: 53.3% expected score (454 games)
  • 2000-2199 rating, UltraBullet: 44.1% expected score (49 games)
  • 2000-2199 rating, Bullet: 48.0% expected score (26,420 games)
  • 2000-2199 rating, Blitz: 50.8% expected score (47,639 games)
  • 2000-2199 rating, Rapid: 49.3% expected score (7,081 games)
  • 2000-2199 rating, Classical: 42.2% expected score (165 games)
  • 2200-2499 rating, UltraBullet: 32.8% expected score (13 games)
  • 2200-2499 rating, Bullet: 48.6% expected score (20,077 games)
  • 2200-2499 rating, Blitz: 49.3% expected score (23,987 games)
  • 2200-2499 rating, Rapid: 46.6% expected score (2,211 games)
  • 2200-2499 rating, Classical: 39.9% expected score (28 games)
  • 2500+ rating, Bullet: 47.2% expected score (4,958 games)
  • 2500+ rating, Blitz: 48.1% expected score (1,744 games)
  • 2500+ rating, Rapid: 45.3% expected score (72 games)
  • 2500+ rating, Classical: 30.0% expected score (1 games)

Related Openings

Parent
Semi-Slav Defense
51.5%
Variations (5)
Semi-Slav Defense: Accelerated Move Order
50.8%
Semi-Slav Defense: Main Line
51.8%
Semi-Slav Defense: Marshall Gambit
53.5%
Semi-Slav Defense: Normal Variation
48.8%
Semi-Slav Defense: Chigorin Defense
48.6%
Continuations (4)
Semi-Slav Defense: Noteboom Variation, Anti-Noteboom Variation
58.0%
Semi-Slav Defense: Noteboom Variation, Anti-Noteboom Gambit
53.0%
Semi-Slav Defense: Noteboom Variation, Anti-Noteboom Variation, Belyavsky Line
52.6%
Semi-Slav Defense: Noteboom Variation, Abrahams Variation
47.2%
Analyze Semi-Slav Defense: Noteboom Variation PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

What is the Semi-Slav Defense: Noteboom Variation win rate?

The Semi-Slav Defense: Noteboom Variation has a 49.8% (90% CI: 49.7%-49.9%) win rate for white, based on 357K rated games from Lichess.

At what rating does the Semi-Slav Defense: Noteboom Variation perform best?

The Semi-Slav Defense: Noteboom Variation performs best at 1000-1199 Elo with a 54.2% win rate for white (9.2K games). Win rate tends to decline at higher ratings as opponents know the theory better.

Is the Semi-Slav Defense: Noteboom Variation better in blitz or rapid?

UltraBullet (58.6%) outperforms Classical (48.2%) by 10.4%. Choose your time control wisely.

How sharp is the Semi-Slav Defense: Noteboom Variation?

The Semi-Slav Defense: Noteboom Variation has a sharpness score of 96.3 (very decisive), meaning 96.3% of games end decisively. Average game length is 34 moves.

What is the Semi-Slav Defense: Noteboom Variation win rate at 0-999 Elo?

At 0-999 Elo, the Semi-Slav Defense: Noteboom Variation has a 53.6% (90% CI: 52.1%-55.0%) win rate for white, based on 3.2K Lichess games. Average game length is 27 moves with a 2.4% draw rate.

What is the Semi-Slav Defense: Noteboom Variation win rate at 1000-1199 Elo?

At 1000-1199 Elo, the Semi-Slav Defense: Noteboom Variation has a 54.2% (90% CI: 53.3%-55.0%) win rate for white, based on 9.2K Lichess games. Average game length is 29 moves with a 2.4% draw rate.

What is the Semi-Slav Defense: Noteboom Variation win rate at 1200-1399 Elo?

At 1200-1399 Elo, the Semi-Slav Defense: Noteboom Variation has a 53.5% (90% CI: 52.9%-54.1%) win rate for white, based on 20K Lichess games. Average game length is 31 moves with a 2.7% draw rate.

What is the Semi-Slav Defense: Noteboom Variation win rate at 1400-1599 Elo?

At 1400-1599 Elo, the Semi-Slav Defense: Noteboom Variation has a 51.7% (90% CI: 51.3%-52.2%) win rate for white, based on 37K Lichess games. Average game length is 32 moves with a 3.1% draw rate.

What is the Semi-Slav Defense: Noteboom Variation win rate at 1600-1799 Elo?

At 1600-1799 Elo, the Semi-Slav Defense: Noteboom Variation has a 50.4% (90% CI: 50.1%-50.8%) win rate for white, based on 64K Lichess games. Average game length is 33 moves with a 3.3% draw rate.

What is the Semi-Slav Defense: Noteboom Variation win rate at 1800-1999 Elo?

At 1800-1999 Elo, the Semi-Slav Defense: Noteboom Variation has a 49.0% (90% CI: 48.8%-49.3%) win rate for white, based on 89K Lichess games. Average game length is 34 moves with a 3.7% draw rate.

What is the Semi-Slav Defense: Noteboom Variation win rate at 2000-2199 Elo?

At 2000-2199 Elo, the Semi-Slav Defense: Noteboom Variation has a 48.2% (90% CI: 47.9%-48.5%) win rate for white, based on 81K Lichess games. Average game length is 36 moves with a 4.2% draw rate.

What is the Semi-Slav Defense: Noteboom Variation win rate at 2200-2499 Elo?

At 2200-2499 Elo, the Semi-Slav Defense: Noteboom Variation has a 48.9% (90% CI: 48.5%-49.3%) win rate for white, based on 46K Lichess games. Average game length is 37 moves with a 4.5% draw rate.

What is the Semi-Slav Defense: Noteboom Variation win rate at 2500+ Elo?

At 2500+ Elo, the Semi-Slav Defense: Noteboom Variation has a 49.9% (90% CI: 48.9%-50.9%) win rate for white, based on 6.8K Lichess games. Average game length is 39 moves with a 5.5% draw rate.

What is the Semi-Slav Defense: Noteboom Variation win rate in UltraBullet?

In UltraBullet games, the Semi-Slav Defense: Noteboom Variation has a 58.6% (90% CI: 56.0%-61.2%) win rate for white (951 Lichess games). Draw rate is 1.7%.

What is the Semi-Slav Defense: Noteboom Variation win rate in Bullet?

In Bullet games, the Semi-Slav Defense: Noteboom Variation has a 51.3% (90% CI: 51.1%-51.5%) win rate for white (141K Lichess games). Draw rate is 2.7%.

What is the Semi-Slav Defense: Noteboom Variation win rate in Blitz?

In Blitz games, the Semi-Slav Defense: Noteboom Variation has a 48.7% (90% CI: 48.5%-48.8%) win rate for white (181K Lichess games). Draw rate is 4.3%.

What is the Semi-Slav Defense: Noteboom Variation win rate in Rapid?

In Rapid games, the Semi-Slav Defense: Noteboom Variation has a 49.5% (90% CI: 49.0%-49.9%) win rate for white (33K Lichess games). Draw rate is 5.1%.

What is the Semi-Slav Defense: Noteboom Variation win rate in Classical?

In Classical games, the Semi-Slav Defense: Noteboom Variation has a 48.2% (90% CI: 45.8%-50.6%) win rate for white (1.2K Lichess games). Draw rate is 6.4%.

Is the Semi-Slav Defense: Noteboom Variation a good opening?

The Semi-Slav Defense: Noteboom Variation is statistically balanced with a 49.8% (90% CI: 49.7%-49.9%) win rate across all ratings. It performs best at 1000-1199 Elo. Your results depend on your rating, time control, and how well you know the typical plans.