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Oleksandr Kostsov

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UKR · 12 yrs · K=40 · Peak 1727 (Mar 2026)

Best performance: 1866 at "Chestnut Horse" team tournament. Winter stage.(Best of 2026)

World #=77885 live, down 1311#76,574 publishedUkraine #=1768Europe #=42416among active players

Rapid rating

1697

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

On FIDE’s list since May 2023

How live ratings are calculated

Rating History · Rapid

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Rapid rating 1487 to 1697 over the last 12 months; peak 1727 in March 2026.

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 · Rapid

oldest → latest

Longest unbeaten run in 2026: 9 games, Jan 24 – Feb 22.

From 100 rapid games on record, the latest on Aug 29.

Rapid games since the November list

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

Last playedScore
Championship Ukraine Teams of Boys-12 - 2026 (Rapid)Aug 29TPR 17426/9

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

Best wins · Rapid

From 78 rated rapid games against rated opponents, 2022–2026

#OpponentRating
1, Mykhailo Nikonenko, Apr 2026 · Chestnut Horse team tournament. Spring stage., 1924
2, Oleksandr Shtrykun, Apr 2026 · Chestnut Horse team tournament. Spring stage., 1839
3, Myroslav Bochechka, 2 wins, Feb 2026 · "Chestnut Horse" team tournament. Winter stage., 1749

Event timeline · Rapid

8 of 13 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
Aug 20268516471742
May 202615816281649
Apr 20268516771772
Mar 20266315661566
Feb 20268616731866
Jan 20266515761849
Nov 20258416701670

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 · Rapid

World

  1. #=77885Andrii Dudko1697.0
  2. #=77885David Yerokhin1697.0
  3. #=77885Oleksandr Kostsov1697.0
  4. #=77885Tymofii Korsun1697.0
  5. #=77885Ivan Rakubovchuk1697.0

Ukraine

  1. #=1768Andrii Dudko1697.0
  2. #=1768David Yerokhin1697.0
  3. #=1768Oleksandr Kostsov1697.0
  4. #=1768Tymofii Korsun1697.0
  5. #=1768Ivan Rakubovchuk1697.0

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