USCF player statistics

Siu, Lucy Aymin

USCF 30579201New YorkUpdated: Oct 2026

Official US Chess record

Gender: Female
FIDE: FIDE 39997707
US Chess reported rank: #17,638 national · #2,031 in state
Floor: Regular 150 · Quick 150 · Online Regular 100 · Online Quick 100
Rated games: Online Regular 17 · Online Quick 17

US Chess record as of Sep 15, 2026

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Regular rating

1,312-6 since Sep 2026

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

Oct 20261,312 Regular

Compare format

Dec 2025Oct 2026

11 updates in this window · +322 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-61 Quick vs Regular
Typical for 1,300–1,399 regular players: -72 (middle half -140 to -27, 1,944 established members). This gap is within the typical range.
-614 Online Regular vs Regular (provisional)
Typical for 1,300–1,399 regular players: -240 (middle half -418 to -108, 187 established members). This gap is below the typical range.
-653 Online Quick vs Regular (provisional)
Typical for 1,300–1,399 regular players: -208 (middle half -443 to -12, 191 established members). This gap is below the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +128; May 2026 to Jun 2026
Biggest drop: -22; Apr 2026 to May 2026
Longest rise: 2 updates; +149 from Dec 2025 to Feb 2026
Updates that moved: 9 of 10; Latest -6, Sep 2026 to Oct 2026
Typical move: ±41; Mean absolute change; spread ±55.1

Regular rating in context

Oct 2026 update

United States

#23,628of 82,596 rated members · higher than 71.3%

58,940 lower · 29 same rating · 23,627 higher · ties share a rank

New York

#2,466of 9,044 rated members · higher than 72.7%

6,577 lower · 2 same rating · 2,465 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 6,989 within 100 points of 1,312 (this player included)

Player · 1,312

01,4502,900

1,300–1,349: 1,765 members (2.1%) · highlighted band is the player’s · dashed line is the target

Target 1,350

72.8% below 1,350 (60,192 of 82,596; 71.3% below 1,312)

Percentile over time · United States

71.3% higher than · Oct 2026 · rank #23,628 of 82,596

Since Dec 2025
+13.7 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 New York 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 Siu, Lucy Aymin
Month	Regular	Quick	Online Regular	Online Quick
Oct 2026	1,312-6	1,251no change	698 Pno change · 17 games	659 Pno change · 17 games
Sep 2026	1,318+62	1,251+137	698 Pno change · 17 games	659 Pno change · 17 games
Aug 2026	1,256no change	1,114no change	698 Pno change · 17 games	659 Pno change · 17 games
Jul 2026	1,256+16	1,114+6	698 Pno change · 17 games	659 Pno change · 17 games
Jun 2026	1,240+128	1,108+64	698 Pno change · 17 games	659 Pno change · 17 games
May 2026	1,112-22	1,044-18	698 Pno change · 17 games	659 Pno change · 17 games
Apr 2026	1,134+10	1,062+25	698 Pno change · 17 games	659 Pno change · 17 games
Mar 2026	1,124-15	1,037no change	698 Pno change · 17 games	659 Pno change · 17 games
Feb 2026	1,139+23	1,037-42	698 Pno change · 17 games	659 Pno change · 17 games
Jan 2026	1,116+126	1,079+168	698 Pno change · 17 games	659 Pno change · 17 games
Dec 2025	990	911	698 P17 games	659 P17 games

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