USCF player statistics
Kuperman, Sofiya
Official US Chess record- FIDE
- FIDE 0
Regular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
+1 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +198
- Feb 2026 to Mar 2026
- Biggest drop
- -16
- Mar 2026 to Apr 2026
- Longest rise
- 1 update
- +198 from Feb 2026 to Mar 2026
- Current run
- 5 updates
- Unchanged since Apr 2026
- Typical move
- ±24
- Mean absolute change; spread ±66.9
Regular rating in context
United States
#70,500of 83,635 rated members · higher than 15.6%
13,093 lower · 43 same rating · 70,499 higher · ties share a rank
Maryland
#1,581of 1,878 rated members · higher than 15.7%
296 lower · 2 same rating · 1,580 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,245 within 100 points of 283 (this player included)
250–299: 2,532 members (3%) · highlighted band is the player’s · dashed line is the target
16.6% below 300 (13,947 of 83,635; 15.6% below 283)
How these comparisons are calculated
Chess67 calculations from the Sep 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 |
|---|---|---|
| Sep 2026 | 283 Pno change · 10 games | 284 Pno change · 10 games |
| Aug 2026 | 283 Pno change · 10 games | 284 Pno change · 10 games |
| Jul 2026 | 283 Pno change · 10 games | 284 Pno change · 10 games |
| Jun 2026 | 283 Pno change · 10 games | 284 Pno change · 10 games |
| May 2026 | 283 Pno change · 10 games | 284 Pno change · 10 games |
| Apr 2026 | 283 P-16 · 10 games | 284 P-15 · 10 games |
| Mar 2026 | 299 P+198 · 7 games | 299 P+198 · 7 games |
| Feb 2026 | 101 Pno change · 7 games | 101 Pno change · 7 games |
| Jan 2026 | 101 Pno change · 4 games | 101 Pno change · 4 games |
| Dec 2025 | 101 P4 games | 101 P4 games |