USCF player statistics

Byelashova, Sofia

USCF 31394375WashingtonUpdated: Oct 2026

Official US Chess record

Gender: Female
FIDE: FIDE 39954781
US Chess reported rank: #13,660 national · #371 in state
Floor: Regular 1,400 · Quick 150 · Blitz 132

US Chess record as of Sep 16, 2026

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Regular rating

1,4660 since Sep 2026

Published rating · Oct 2026 · 11 published updates since Dec 2025

Oct 20261,466 Regular

Compare format

Dec 2025Oct 2026

11 updates in this window · +406 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity

Compare with another playerOverlays their published ratings on the chart; the link keeps the comparison.

Other formats against Regular

-544 Quick vs Regular
Typical for 1,400–1,499 regular players: -84 (middle half -160 to -33, 1,988 established members). This gap is below the typical range.
-777 Blitz vs Regular
Typical for 1,400–1,499 regular players: -189 (middle half -347 to -64, 664 established members). This gap is below the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +319; May 2026 to Jun 2026
Biggest drop: -51; Apr 2026 to May 2026
Longest rise: 1 update; +319 from May 2026 to Jun 2026
Current run: 4 updates; Unchanged since Jun 2026
Typical move: ±67; Mean absolute change; spread ±124.3

Regular rating in context

Oct 2026 update

United States

#18,374of 82,596 rated members · higher than 77.7%

64,180 lower · 43 same rating · 18,373 higher · ties share a rank

Washington

#525of 2,117 rated members · higher than 75.1%

1,591 lower · 2 same rating · 524 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 6,899 within 100 points of 1,466 (this player included)

Player · 1,466

01,4502,900

1,450–1,499: 1,507 members (1.8%) · highlighted band is the player’s · dashed line is the target

Target 1,500

78.9% below 1,500 (65,187 of 82,596; 77.7% below 1,466)

Percentile over time · United States

77.7% higher than · Oct 2026 · rank #18,374 of 82,596

Since Dec 2025
+17 pts

Dec 2025Oct 2026

Each month against that month’s active pool, so pool growth and rating drift both count.

How these comparisons are calculated

Chess67 calculations from the Oct 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.

United States statistics Washington statistics

Published ratings by month

P marks a provisional rating; the small figure is the change since the previous published observation.

Monthly USCF ratings for Byelashova, Sofia
Month	Regular	Quick	Blitz
Oct 2026	1,466no change	922no change	689no change
Sep 2026	1,466no change	922no change	689no change
Aug 2026	1,466no change	922no change	689no change
Jul 2026	1,466no change	922no change	689no change
Jun 2026	1,466+319	922no change	689no change
May 2026	1,147-51	922no change	689no change
Apr 2026	1,198-27	922no change	689no change
Mar 2026	1,225-36	922+8	689no change
Feb 2026	1,261-20	914+204	689+82
Jan 2026	1,281+221	710no change	607no change
Dec 2025	1,060	710	607

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