TrueEloPlay what wins.
Analyzer

Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation

797 games from Lichess · Updated January 2026

Tough Sell
Black Expected Score47.5%Range (90% confident): 44.6% – 50.4%Based on 797 games
0%47.5%100%
Range (90% confident): 44.6% – 50.4%
Outcome Distribution
44.5%5.9%49.5%
Win
Draw
Loss
6...Ba5
Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation
Analyzen=797
Avg Length38 moves
Sharpness94%
Draw Rate5.9%

What is the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation expected score for Black?

Snapshot

At all ratings, the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation has a 47.5% expected score for Black (we're 90% confident it's between 44.6% and 50.4%), based on 797 Lichess games.

Black Win% by Rating

Declines with rating: 64% → 31%

1400
1600
1800
2000
2200
2500+

  • 1400-1599: 63.6% win rate (4 games)
  • 1600-1799: 60.0% win rate (1 games)
  • 1800-1999: 40.4% win rate (27 games)
  • 2000-2199: 47.1% win rate (112 games)
  • 2200-2499: 48.5% win rate (480 games)
  • 2500+: 31.2% win rate (173 games)

Black Win% by Time Control

Best in Rapid (47%), worst in Classical (14%)

Bullet
Blitz
Rapid
Classical

  • Bullet: 42.7% win rate (84 games)
  • Blitz: 45.1% win rate (681 games)
  • Rapid: 46.9% win rate (23 games)
  • Classical: 14.3% win rate (9 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

  • 1400-1599 rating, Blitz: 50.0% expected score (2 games)
  • 1400-1599 rating, Rapid: 78.6% expected score (2 games)
  • 1600-1799 rating, Blitz: 70.0% expected score (1 games)
  • 1800-1999 rating, Bullet: 55.9% expected score (7 games)
  • 1800-1999 rating, Blitz: 50.0% expected score (16 games)
  • 1800-1999 rating, Rapid: 16.7% expected score (3 games)
  • 1800-1999 rating, Classical: 70.0% expected score (1 games)
  • 2000-2199 rating, Bullet: 35.2% expected score (12 games)
  • 2000-2199 rating, Blitz: 52.2% expected score (92 games)
  • 2000-2199 rating, Rapid: 59.1% expected score (4 games)
  • 2000-2199 rating, Classical: 22.8% expected score (4 games)
  • 2200-2499 rating, Bullet: 58.5% expected score (28 games)
  • 2200-2499 rating, Blitz: 50.4% expected score (440 games)
  • 2200-2499 rating, Rapid: 61.2% expected score (12 games)
  • 2500+ rating, Bullet: 37.1% expected score (37 games)
  • 2500+ rating, Blitz: 35.2% expected score (130 games)
  • 2500+ rating, Rapid: 35.7% expected score (2 games)
  • 2500+ rating, Classical: 40.9% expected score (4 games)

Related Openings

Parent
Nimzo-Indian Defense
48.4%
Variations (5)
Nimzo-Indian Defense: Three Knights Variation
50.0%
Nimzo-Indian Defense: Leningrad Variation
48.8%
Nimzo-Indian Defense: Classical Variation
50.5%
Nimzo-Indian Defense: Sämisch Variation
49.5%
Nimzo-Indian Defense: Kmoch Variation
51.8%
Analyze Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

What is the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation win rate?

The Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation has a 49.5% (90% CI: 46.6%-52.4%) win rate for white, based on 797 rated games from Lichess.

At what rating does the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation perform best?

The Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation performs best at 2500+ Elo with a 60.5% win rate for white (173 games). Win rate tends to decline at higher ratings as opponents know the theory better.

Is the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation better in blitz or rapid?

Blitz (49.6%) outperforms Bullet (52.0%) by -2.4%. Choose your time control wisely.

How sharp is the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation?

The Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation has a sharpness score of 94.1 (decisive), meaning 94.1% of games end decisively. Average game length is 38 moves.

What is the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation win rate at 2000-2199 Elo?

At 2000-2199 Elo, the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation has a 48.9% (90% CI: 41.2%-56.6%) win rate for white, based on 112 Lichess games. Average game length is 36 moves with a 4.0% draw rate.

What is the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation win rate at 2200-2499 Elo?

At 2200-2499 Elo, the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation has a 46.2% (90% CI: 42.5%-50.0%) win rate for white, based on 480 Lichess games. Average game length is 37 moves with a 5.3% draw rate.

What is the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation win rate at 2500+ Elo?

At 2500+ Elo, the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation has a 60.5% (90% CI: 54.3%-66.5%) win rate for white, based on 173 Lichess games. Average game length is 42 moves with a 8.3% draw rate.

What is the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation win rate in Blitz?

In Blitz games, the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation has a 49.6% (90% CI: 46.5%-52.7%) win rate for white (681 Lichess games). Draw rate is 5.3%.

Is the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation a good opening?

The Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation is statistically balanced with a 49.5% (90% CI: 46.6%-52.4%) win rate across all ratings. It performs best at 2500+ Elo. Your results depend on your rating, time control, and how well you know the typical plans.