USCF player statistics

Dehmelt, Karl

USCF 10164176PennsylvaniaUpdated: Oct 2026

Official US Chess record

Gender: Male
FIDE title: F
FIDE: FIDE 2001179
TD: Local
US Chess reported rank: #739 national · #20 in state
Floor: Regular 2,200 · Quick 2,000 · Blitz 2,000 · Online Regular 100 · Online Quick 1,900
Rated games: Online Regular 21

US Chess record as of Sep 14, 2026

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Regular rating

2,203-14 since Sep 2026

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

Oct 20262,203 Regular

Compare format

Dec 2025Oct 2026

11 updates in this window · +3 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-181 Quick vs Regular
Typical for 2,200–2,299 regular players: -170 (middle half -248 to -94, 546 established members). This gap is within the typical range.
-203 Blitz vs Regular
Typical for 2,200–2,299 regular players: -172 (middle half -283 to -91, 399 established members). This gap is within the typical range.
+49 Online Regular vs Regular (provisional)
Typical for 2,200–2,299 regular players: -357 (middle half -577 to -184, 146 established members). This gap is above the typical range.
-75 Online Quick vs Regular
Typical for 2,200–2,299 regular players: -323 (middle half -580 to -160, 138 established members). This gap is above the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +13; Jun 2026 to Jul 2026
Biggest drop: -14; Sep 2026 to Oct 2026
Longest rise: 3 updates; +15 from Feb 2026 to May 2026
Updates that moved: 8 of 10; Latest -14, Sep 2026 to Oct 2026
Typical move: ±6; Mean absolute change; spread ±8.3

Regular rating in context

Oct 2026 update

United States

#966of 82,596 rated members · higher than 98.8%

81,619 lower · 12 same rating · 965 higher · ties share a rank

Pennsylvania

#34of 2,576 rated members · higher than 98.6%

2,541 lower · 2 same rating · 33 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 1,388 within 100 points of 2,203 (this player included)

Player · 2,203

01,4502,900

2,200–2,249: 483 members (0.5%) · highlighted band is the player’s · dashed line is the target

Target 2,250

99.2% below 2,250 (81,949 of 82,596; 98.8% below 2,203)

Percentile over time · United States

98.8% higher than · Oct 2026 · rank #966 of 82,596

Since Dec 2025
+0.2 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 Pennsylvania 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 Dehmelt, Karl
Month	Regular	Quick	Blitz	Online Regular	Online Quick
Oct 2026	2,203-14	2,022+1	2,000no change	2,252 Pno change · 21 games	2,128no change
Sep 2026	2,217-11	2,021-7	2,000-16	2,252 Pno change · 21 games	2,128no change
Aug 2026	2,228+4	2,028-15	2,016no change	2,252 Pno change · 21 games	2,128no change
Jul 2026	2,224+13	2,043no change	2,016+14	2,252 Pno change · 21 games	2,128no change
Jun 2026	2,211-4	2,043+4	2,002no change	2,252 Pno change · 21 games	2,128no change
May 2026	2,215+8	2,039+15	2,002no change	2,252 Pno change · 21 games	2,128no change
Apr 2026	2,207+6	2,024+24	2,002no change	2,252 Pno change · 21 games	2,128no change
Mar 2026	2,201+1	2,000no change	2,002no change	2,252 Pno change · 21 games	2,128no change
Feb 2026	2,200no change	2,000no change	2,002no change	2,252 Pno change · 21 games	2,128no change
Jan 2026	2,200no change	2,000no change	2,002no change	2,252 Pno change · 21 games	2,128no change
Dec 2025	2,200	2,000	2,002	2,252 P21 games	2,128

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