USCF player statistics

Effron, Marian Ira

USCF 33141621New YorkUpdated: Nov 2026

Official US Chess record

Gender: Male
US Chess reported rank: #73,606 national · #8,438 in state
Floor: Regular 111 · Quick 111
Rated games: Regular 4 · Quick 4

US Chess record as of Sep 18, 2026

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Regular rating

111

Provisional rating · Nov 2026 · 5 published updates since Jul 2026

Nov 2026111 provisional

Compare format

Jul 2026Nov 2026

5 updates in this window · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

0 Quick vs Regular (provisional)
Typical for 100–199 regular players: 0 (middle half 0 to +2, 598 established members). This gap is within the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +11; Sep 2026 to Oct 2026
Biggest drop: —; No drop between published updates yet
Longest rise: 1 update; +11 from Sep 2026 to Oct 2026
Current run: 1 update; Unchanged since Oct 2026
Typical move: ±3; Mean absolute change; spread ±5.5

Regular rating in context

Nov 2026 update

United States

#78,654of 83,032 rated members · higher than 5.1%

4,263 lower · 116 same rating · 78,653 higher · ties share a rank

New York

#8,647of 9,119 rated members · higher than 5%

460 lower · 13 same rating · 8,646 higher · ties share a rank

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 9,294 within 100 points of 111 (this player included)

Player · 111

01,4252,850

100–149: 6,421 members (7.7%) · highlighted band is the player’s · dashed line is the target

Target 150

7.7% below 150 (6,421 of 83,032; 5.1% below 111)

Percentile over time · United States

5.1% higher than · Nov 2026 · rank #78,654 of 83,032

Since Jul 2026
+5.1 pts

Jul 2026Nov 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 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.

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 Effron, Marian Ira
Month	Regular	Quick
Nov 2026	111 Pno change · 13 games	111 Pno change · 13 games
Oct 2026	111 P+11 · 13 games	111 P+11 · 13 games
Sep 2026	100 Pno change · 4 games	100 Pno change · 4 games
Aug 2026	100 Pno change · 4 games	100 Pno change · 4 games
Jul 2026	100 P4 games	100 P4 games

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