USCF player statistics
Backstrom, Tilly
Official US Chess record- Top rated · #52 in Idaho (Blitz)
- Top rated · #65 in Idaho (Quick)
- Top rated · #64 in Idaho (Regular)
- Fastest rising · #5 in Idaho (Blitz)
- Fastest rising · #15 in Idaho (Quick)
- Fastest rising · #21 in Idaho (Regular)
- FIDE
- FIDE 39924777
- US Chess reported rank
- #11,493 national · #37 in state
- Floor
- Regular 1,300 · Quick 1,200 · Blitz 148
US Chess record as of Mar 19, 2026
Regular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-132 Quick vs Regular
No national baseline for this rating band yet.
-193 Blitz vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +9
- Aug 2026 to Sep 2026
- Biggest drop
- -16
- May 2026 to Jun 2026
- Longest rise
- 1 update
- +9 from Aug 2026 to Sep 2026
- Updates that moved
- 2 of 9
- Latest +9, Aug 2026 to Sep 2026
- Typical move
- ±3
- Mean absolute change; spread ±6.4
Regular rating in context
United States
#16,182of 83,635 rated members · higher than 80.6%
67,423 lower · 31 same rating · 16,181 higher · ties share a rank
Idaho
#64of 284 rated members · higher than 77.4%
220 lower · 1 same rating · 63 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 6,827 within 100 points of 1,526 (this player included)
1,500–1,549: 1,925 members (2.3%) · highlighted band is the player’s · dashed line is the target
81.5% below 1,550 (68,205 of 83,635; 80.6% below 1,526)
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 | Blitz |
|---|---|---|---|
| Sep 2026 | 1,526+9 | 1,394+9 | 1,333+20 |
| Aug 2026 | 1,517no change | 1,385no change | 1,313no change |
| Jul 2026 | 1,517no change | 1,385no change | 1,313no change |
| Jun 2026 | 1,517-16 | 1,385-16 | 1,313no change |
| May 2026 | 1,533no change | 1,401no change | 1,313no change |
| Apr 2026 | 1,533no change | 1,401no change | 1,313no change |
| Mar 2026 | 1,533no change | 1,401no change | 1,313no change |
| Feb 2026 | 1,533no change | 1,401no change | 1,313no change |
| Jan 2026 | 1,533no change | 1,401no change | 1,313no change |
| Dec 2025 | 1,533 | 1,401 | 1,313 |