USCF player statistics
Lahiri, Sampurna
- Biggest rank climb · #37 in New York (Quick)
- Fastest rising · #35 in New York (Quick)
- Fastest rising · #87 in New York (Regular)
- Gender
- Female
- US Chess reported rank
- #50,246 national · #5,656 in state
- Floor
- Regular 150 · Quick 150
US Chess record as of Sep 17, 2026
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +191
- Oct 2026 to Nov 2026
- Biggest drop
- -42
- Jun 2026 to Jul 2026
- Longest rise
- 4 updates
- +409 from Feb 2026 to Jun 2026
- Updates that moved
- 7 of 11
- Latest +191, Oct 2026 to Nov 2026
- Typical move
- ±59
- Mean absolute change; spread ±74.7
Regular rating in context
United States
#49,255of 83,032 rated members · higher than 40.6%
33,731 lower · 47 same rating · 49,254 higher · ties share a rank
New York
#5,192of 9,119 rated members · higher than 42.9%
3,918 lower · 10 same rating · 5,191 higher · ties share a rank
Where this rating sits · United States
83,032 rated members in 50-point bands · median 850–899 · 9,837 within 100 points of 685 (this player included)
650–699: 2,420 members (2.9%) · highlighted band is the player’s · dashed line is the target
41.5% below 700 (34,508 of 83,032; 40.6% below 685)
Percentile over time · United States
40.6% higher than · Nov 2026 · rank #49,255 of 83,032
Since Dec 2025
+33.6 pts
How these comparisons are calculated
Chess67 calculations from the Nov 2026 monthly rating update, using the same population as the USCF statistics pages: US members classified as active in the published monthly records, excluding lifetime-coded records, provisional ratings included. Ties share a rank; “lower” is strictly lower; national and state groups overlap. The target explorer keeps the population fixed, with this player at their recorded rating: it is a rating comparison, not a prediction of future rank.
Published ratings by month
P marks a provisional rating; the small figure is the change since the previous published observation.
| Month | Regular | Quick |
|---|---|---|
| Nov 2026 | 685+191 | 681+254 |
| Oct 2026 | 494no change | 427no change |
| Sep 2026 | 494no change | 427no change |
| Aug 2026 | 494no change | 427no change |
| Jul 2026 | 494-42 | 427-2 |
| Jun 2026 | 536+96 | 429-10 |
| May 2026 | 440+82 | 439+81 |
| Apr 2026 | 358+77 | 358+76 |
| Mar 2026 | 281 P+154 · 21 games | 282 P+155 · 21 games |
| Feb 2026 | 127 P-3 · 21 games | 127 P-2 · 21 games |
| Jan 2026 | 130 Pno change · 14 games | 129 Pno change · 14 games |
| Dec 2025 | 130 P14 games | 129 P14 games |