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Oleksandr Kostsov

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UKR · 12 yrs · K=40 · Peak 1697 (Dec 2025)

Best performance: 1914 at Svitoglyad 09.2026 - blitz(Best of 2026)

World #=66987 live, down 1164#65,823 publishedUkraine #=1537Europe #=34652among active players

Blitz rating

1646

FIDE’s November 2026 list. No rated games since, so the live rating is the same.

On FIDE’s list since Dec 2023

How live ratings are calculated

Rating History · Blitz

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Blitz rating 1653 to 1646 over the last 12 months; peak 1697 in December 2025.

Official rating by month

Each month: the rating, its change from the list before, and the rated games FIDE counted.

ListRapidBlitz
Nov 20261697, 0, 0 games1646, 0, 0 games
Oct 20261697, 0, 0 games1646, +55, 4 games
Sep 20261697, +29, 8 games1591, -36, 9 games
Aug 20261668, 0, 0 games1627, 0, 0 games
Jul 20261668, -25, 7 games1627, +12, 8 games
Jun 20261693, -25, 8 games1615, -41, 9 games
May 20261718, +39, 8 games1656, 0, 0 games
Apr 20261679, -48, 6 games1656, +29, 6 games
Mar 20261727, +89, 8 games1627, -1, 0 games
Feb 20261638, +88, 6 games1628, -33, 11 games
Jan 20261550, +63, 8 games1661, -36, 7 games
Dec 20251487, 0, 0 games1697, +44, 6 games

Form · Blitz

oldest → latest

Unbeaten in the last 7 games (5 wins, 2 draws), since Sep 19. That is the longest unbeaten run of 2026.

From 191 blitz games on record, the latest on Sep 19.

Blitz games since the November list

No rated blitz games this rating periodsince the NOV26 list (Nov 1, 2026)

Last playedScore
Svitoglyad 09.2026 - blitzSep 19TPR 19146/7

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

Best wins · Blitz

From 142 rated blitz games against rated opponents, 2023–2026

#OpponentRating
1, Tymofii Korsun, 2 wins, Mar 2026 · Svitoglyad 03.2026 - blitz, 1828
2, Hordii Tsivinskyi, Sep 2025 · Championship Kyiv Teams of Boys-20 - 2025 (Blitz), 1783
3, Amet Kerim, Sep 2025 · Championship Kyiv Teams of Boys-20 - 2025 (Blitz), 1760

Event timeline · Blitz

8 of 24 events · All years

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.

Performance rating by month

MonthGamesScoreAvg oppTPR
Sep 202654½15481914
Aug 202693½16671587
May 202617816471626
Mar 20266415931718
Jan 2026116½15331598
Dec 202573½15991599
Nov 20256515351808

Games count in the month they were played. Each month and year is one performance rating over all of its rated games.

Rated near Oleksandr Kostsov · Blitz

World

  1. #=66987Eguil E. Frederiksen1646.0
  2. #=66987Gennady Aleksandrov1646.0
  3. #=66987Oleksandr Kostsov1646.0
  4. #=66987Cosmin Daniel Cojocaru1646.0
  5. #=66987Amir Hosannah1646.0

Ukraine

  1. #1536Artem Nemychenkov1646.6
  2. #=1537Volodymyr Lopatiuk1646.0
  3. #=1537Oleksandr Kostsov1646.0
  4. #=1537Artem Pylypenko1646.0
  5. #=1537Sviatoslav Stepanov1646.0

Live rating: FIDE’s November list plus every rated game played since. Not affiliated with FIDE.