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Petr Kostojakov

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RUS · 64 yrs · K=20 · Peak 1838 (Mar 2024)

Best performance: 1873 at Abaza 2009 open(Best of 2009)

OCT26 Rating

1838

Live Rating

1838.0

Change

0.0

Games Played

0

How live ratings are calculated

Rating History · Classical

Loading chart…
Official classical rating by month
ListRatingChange
Oct 202618380
Sep 202618380
Aug 202618380
Jul 202618380
Jun 202618380
May 202618380
Apr 202618380
Mar 202618380
Feb 202618380
Jan 202618380
Dec 202518380
Nov 202518380

Classical games since the October list

No rated standard games this rating periodsince the OCT26 list (Oct 1, 2026)

Last playedScore
Abaza 2012 openJul 21, 2012TPR 11171/9

The live rating moves only when new rated games are played. Until then it matches the published rating.

Event timeline · Classical

8 events

Events before the current rating period show the performance, not a rating change.

Live events show the rating change; earlier events show the performance rating.

  • Abaza 2012 open1117
    Jul 2012Swissfederation source
    Score 1/9Opp avg 1917Start 1757
  • Abaza 2011 open1633
    Jul 2011Swissfederation source
    #2 in 2011Score ½/8Opp avg 1999Start 1766
  • Chmp. Republic Khakasiya 20111694
    Mar 2011Swissfederation source
    Best of 2011Score ½/5Opp avg 1967Start 1771
  • Abaza 2010 open1794
    Jul 2010Swissfederation source
    Best of 2010Score 2½/9Opp avg 1960Start 1768
  • Khakasia Chmp. 2010 open1269
    Feb 2010Swissfederation source
    Score 2½/8Opp avg 2069Start 1786
  • Abaza 2009 open1873
    Jul 2009Swissfederation source
    Best of 2009Score 3/8Opp avg 2031Start 1768
  • Abaza 2008 open1804
    Jul 2008Swissfederation source
    Best of 2008Score 3/9Opp avg 2034
  • Abaza 2007 open1731
    Jul 2007Swissfederation source
    Best of 2007Score 2½/9Opp avg 2040

Live ratings projected from the OCT26 published list · Not affiliated with FIDE