797 games from Lichess · Updated January 2026
At all ratings, the Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation has a 52.5% expected score for White (we're 90% confident it's between 49.6% and 55.4%), based on 797 Lichess games.
Improves with rating: 27% → 61%
Best in Bullet (52%), worst in Rapid (39%)
Click any cell to filter. Green = above 50%, Red = below 50%.
| Rating | UB | Bulle | Blitz | Rapid | Class |
|---|---|---|---|---|---|
| 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
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.
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.
Blitz (49.6%) outperforms Bullet (52.0%) by -2.4%. Choose your time control wisely.
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.
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.
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.
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.
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%.
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.