4.6K games from Lichess · Updated January 2026
Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation leaves Black at 46.3% — pick a better weapon.
The minimum advantage of -10.0% means this line underperforms at the selected level.
Sharpness — share of games that end decisively
At all ratings, the Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation has a 46.3% expected score for Black (we're 90% confident it's between 45.0% and 47.5%), based on 4.6K Lichess games.
Deep-dive datasets for this opening
Improves with rating: 20% → 47%
Best in Bullet (48%), worst in Classical (31%)
Click any cell to filter — click it again to clear. 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 Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation has a 51.4% (90% CI: 50.2%-52.7%) win rate for white, based on 4.6K rated games from Lichess.
The Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation performs best at 1400-1599 Elo with a 65.6% win rate for white (103 games). Win rate tends to decline at higher ratings as opponents know the theory better.
Blitz (51.5%) outperforms Bullet (49.4%) by 2.1%. Choose your time control wisely.
The Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation has a sharpness score of 95.4 (very decisive), meaning 95.4% of games end decisively. Average game length is 33 moves.
At 1400-1599 Elo, the Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation has a 65.6% (90% CI: 57.8%-73.0%) win rate for white, based on 103 Lichess games. Average game length is 28 moves with a 1.4% draw rate.
At 1600-1799 Elo, the Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation has a 49.0% (90% CI: 44.9%-53.2%) win rate for white, based on 389 Lichess games. Average game length is 28 moves with a 3.2% draw rate.
At 1800-1999 Elo, the Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation has a 48.5% (90% CI: 46.0%-50.9%) win rate for white, based on 1.1K Lichess games. Average game length is 32 moves with a 4.5% draw rate.
At 2000-2199 Elo, the Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation has a 51.2% (90% CI: 49.2%-53.2%) win rate for white, based on 1.7K Lichess games. Average game length is 34 moves with a 5.5% draw rate.
At 2200-2499 Elo, the Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation has a 54.4% (90% CI: 52.0%-56.9%) win rate for white, based on 1.1K Lichess games. Average game length is 35 moves with a 4.4% draw rate.
In Bullet games, the Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation has a 49.4% (90% CI: 46.2%-52.5%) win rate for white (676 Lichess games). Draw rate is 2.7%.
In Blitz games, the Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation has a 51.5% (90% CI: 50.0%-52.9%) win rate for white (3.1K Lichess games). Draw rate is 4.5%.
In Rapid games, the Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation has a 52.4% (90% CI: 49.3%-55.5%) win rate for white (713 Lichess games). Draw rate is 6.5%.
The Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation is statistically favors white with a 51.4% (90% CI: 50.2%-52.7%) win rate across all ratings. It performs best at 1400-1599 Elo. Your results depend on your rating, time control, and how well you know the typical plans.