USCF player statistics

Widjaja, Ian

USCF 16010636CaliforniaUpdated: Nov 2026

US Chess membership expired on June 30, 2026. Published rating history is still shown below.

Join / Renew USCF
Official US Chess record

Enter an 8-digit USCF ID, or at least 3 letters of a name. Similar names in CA appear first.

Find USCF-rated tournamentsBrowse upcoming events and entry requirements.
Rating format

Regular rating

1,6110 since Oct 2026

Published rating · Nov 2026 · 12 published updates since Dec 2025

Nov 20261,611 Regular
Dec 2025: 1468Jan 2026: 1611Feb 2026: 1611Mar 2026: 1611Apr 2026: 1611May 2026: 1611Jun 2026: 1611Jul 2026: 1611Aug 2026: 1611Sep 2026: 1611Oct 2026: 1611Nov 2026: 1611
Dec 2025Nov 2026
12 updates in this window · +143 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity

Other formats against Regular

  • -334 Quick vs Regular

    No national baseline for this rating band yet.

  • -302 Online Regular vs Regular

    No national baseline for this rating band yet.

  • -269 Online Quick vs Regular

    No national baseline for this rating band yet.

  • -266 Online Blitz vs Regular (provisional)

    No national baseline for this rating band yet.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+143
Dec 2025 to Jan 2026
Biggest drop
—
No drop between published updates yet
Longest rise
1 update
+143 from Dec 2025 to Jan 2026
Current run
10 updates
Unchanged since Jan 2026
Typical move
±13
Mean absolute change; spread ±43.1

Published ratings by month

P marks a provisional rating; the small figure is the change since the previous published observation.

Monthly USCF ratings for Widjaja, Ian
MonthRegularQuickOnline RegularOnline QuickOnline Blitz
Nov 20261,611no change1,277no change1,309no change1,342no change1,345 Pno change · 19 games
Oct 20261,611no change1,277no change1,309no change1,342no change1,345 Pno change · 19 games
Sep 20261,611no change1,277no change1,309no change1,342no change1,345 Pno change · 19 games
Aug 20261,611no change1,277no change1,309no change1,342no change1,345 Pno change · 19 games
Jul 20261,611no change1,277no change1,309no change1,342no change1,345 Pno change · 19 games
Jun 20261,611no change1,277no change1,309no change1,342no change1,345 Pno change · 19 games
May 20261,611no change1,277no change1,309no change1,342no change1,345 Pno change · 19 games
Apr 20261,611no change1,277no change1,309no change1,342no change1,345 Pno change · 19 games
Mar 20261,611no change1,277no change1,309no change1,342no change1,345 Pno change · 19 games
Feb 20261,611no change1,277no change1,309no change1,342no change1,345 Pno change · 19 games
Jan 20261,611+1431,277no change1,309no change1,342no change1,345 Pno change · 19 games
Dec 20251,4681,2771,3091,3421,345 P19 games
Chess67 DiscordChat with the Chess67 community.Open Find a chess tournamentUpcoming events near you.Browse Find a chess clubClubs and meetups near you.Browse

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.