USCF player statistics
Adduci, Andres
Official US Chess recordRegular rating
Provisional rating · Sep 2026
Sep 2026
517 provisional
The comparison field
Regular rating in context
United States
Among 83,635 rated members; tied ratings share a rank.
Higher than 30.7% of ratings in this population.
Illinois
Among 4,678 rated members; tied ratings share a rank.
Higher than 38.7% of ratings in this population.
Where this rating sits
83,635 rated members · 50-point bands
Median falls in
800–849
10,975 members have ratings within 100 points of 517, including this player.
Highlighted band: player rating · Dashed line: target rating
500–549: 2,741 members (3.2%). Select a band to explore the distribution.
Explore a target rating
Compare a rating with this published population.
32.8% have ratings below 550.
27,504 of 83,635 members. At 517, the figure is 30.7%.
The population stays fixed. This is a rating comparison, not a prediction of future rank or results. The published population includes this player at their recorded rating.
How these comparisons are calculated
Calculated from the Sep 2026 monthly rating update, using the same population as Chess67’s USCF statistics: US members classified as active in the published monthly records, excluding lifetime-coded records. Includes provisional ratings. These are Chess67 calculations, not official US Chess rankings. “Lower” is strictly lower; ties share a rank. National and state groups overlap.
Published ratings by month
All available formats. P indicates a provisional rating.
| Month | Regular | Quick |
|---|---|---|
| Sep 2026 | 517 P | 496 P |
| Aug 2026 | 517 P | 496 P |
| Jul 2026 | 517 P | 496 P |
| Jun 2026 | 517 P | 496 P |
| May 2026 | 517 P | 496 P |
| Apr 2026 | 517 P | 496 P |
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