USCF player statistics

Hemberg Mierau, Miriam

USCF 32259087MassachusettsUpdated: Oct 2026
Official US Chess record

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Gender
Female
US Chess reported rank
#59,600 national · #1,246 in state
Floor
Regular 150 · Quick 150

US Chess record as of Sep 17, 2026

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Rating format

Regular rating

407+94 since Sep 2026

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

Oct 2026407 Regular
Dec 2025: 117 provisionalJan 2026: 117 provisionalFeb 2026: 140Mar 2026: 186Apr 2026: 150May 2026: 209Jun 2026: 209Jul 2026: 313Aug 2026: 313Sep 2026: 313Oct 2026: 407
Dec 2025Oct 2026
11 updates in this window · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity
Overlays their published ratings on the chart; the link keeps the comparison.

Other formats against Regular

  • -3 Quick vs Regular

    Typical for 400–499 regular players: -1 (middle half -9 to +7, 1,658 established members). This gap is within the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+104
Jun 2026 to Jul 2026
Biggest drop
-36
Mar 2026 to Apr 2026
Longest rise
2 updates
+69 from Jan 2026 to Mar 2026
Updates that moved
6 of 10
Latest +94, Sep 2026 to Oct 2026
Typical move
±36
Mean absolute change; spread ±45.5

Regular rating in context

Oct 2026 update

United States

#63,341of 82,596 rated members · higher than 23.2%

19,207 lower · 49 same rating · 63,340 higher · ties share a rank

Massachusetts

#1,442of 1,673 rated members · higher than 13.6%

229 lower · 3 same rating · 1,441 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 10,694 within 100 points of 407 (this player included)

Player · 407
01,4502,900

400–449: 2,679 members (3.2%) · highlighted band is the player’s · dashed line is the target

26% below 450 (21,532 of 82,596; 23.2% below 407)

Percentile over time · United States

23.2% higher than · Oct 2026 · rank #63,341 of 82,596

Since Dec 2025
+17.1 pts

Dec 2025: higher than 6.1% (rank 76,070 of 81,102)Jan 2026: higher than 5.8% (rank 74,781 of 79,487)Feb 2026: higher than 7.3% (rank 77,688 of 83,940)Mar 2026: higher than 9.9% (rank 72,552 of 80,605)Apr 2026: higher than 7.8% (rank 74,334 of 80,831)May 2026: higher than 11.1% (rank 72,143 of 81,236)Jun 2026: higher than 11.2% (rank 73,852 of 83,290)Jul 2026: higher than 17.7% (rank 68,037 of 82,736)Aug 2026: higher than 17.5% (rank 68,454 of 83,080)Sep 2026: higher than 17.4% (rank 69,007 of 83,635)Oct 2026: higher than 23.2% (rank 63,341 of 82,596)
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 Massachusetts 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 Hemberg Mierau, Miriam
MonthRegularQuick
Oct 2026407+94404+92
Sep 2026313no change312no change
Aug 2026313no change312no change
Jul 2026313+104312+104
Jun 2026209no change208no change
May 2026209+59208+58
Apr 2026150-36150-36
Mar 2026186+46186+46
Feb 2026140+23140+23
Jan 2026117 Pno change · 23 games117 Pno change · 23 games
Dec 2025117 P23 games117 P23 games
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About these statistics. Built from the monthly USCF rating updates available to Chess67. Ratings change between publications, and a missing month is not inactivity. The official US Chess record has current ratings and tournament history.