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Jan Kosiedowski

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POL · 14 yrs · K=40 · Peak 1710 (Oct 2026)

Best performance: 1858 at XI Międzynarodowy Festiwal Szachowy im. Lecha Kaczyńskiego w Bydgoszczy - Otwart y Turniej Szachów Błyskawicznych(Best of 2026)

World #=70724 live, down 1271#69,453 publishedPoland #=2378Europe #=36235among active players

Blitz rating

1629

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

On FIDE’s list since Jan 2022

How live ratings are calculated

Rating History · Blitz

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Blitz rating 1501 to 1629 over the last 12 months; peak 1710 in October 2026.

Official rating by month

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

ListClassicalRapidBlitz
Nov 20261547, -16, 5 games1611, 0, 0 games1629, -81, 20 games
Oct 20261563, +3, 5 games1611, +22, 6 games1710, +2, 0 games
Sep 20261560, +14, 13 games1589, +61, 11 games1708, 0, 0 games
Aug 20261546, +14, 6 games1528, -48, 7 games1708, +232, 22 games
Jul 20261532, +11, 2 games1576, 0, 0 games1476, 0, 0 games
Jun 20261521, -48, 5 games1576, +101, 7 games1476, -29, 9 games
May 20261569, 0, 0 games1475, -70, 10 games1505, 0, 0 games
Apr 20261569, -4, 0 games1545, -170, 20 games1505, +5, 2 games
Mar 20261573, +46, 9 games1715, 0, 0 games1500, -1, 0 games
Feb 20261527, -1, 0 games1715, -17, 0 games1501, 0, 0 games
Jan 20261528, 0, 0 games1732, +19, 0 games1501, 0, 0 games
Dec 20251528, +5, 0 games1713, 12 games1501, 0, 0 games

Form · Blitz

oldest → latest

Longest unbeaten run in 2026: 7 games, Jul 4.

From 145 blitz games on record, the latest on Oct 25.

Blitz games since the November list

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

Last playedScore
Indywidualne Mistrzostwa woj. Kujawsko-Pomorskiego Juniorow w Szachach Blyskawicznych - grupa do lat 14Oct 25TPR 16055½/9

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

Best wins · Blitz

From 100 rated blitz games against rated opponents, 2019–2026

#OpponentRating
1, Krzysztof Sobiech, Jul 2026 · XI Międzynarodowy Festiwal Szachowy im. Lecha Kaczyńskiego w Bydgoszczy - Otwart y Turniej Szachów Błyskawicznych, 1886
2, FM Mariusz Mazalon, Jul 2026 · XI Międzynarodowy Festiwal Szachowy im. Lecha Kaczyńskiego w Bydgoszczy - Otwart y Turniej Szachów Błyskawicznych, 1876
3, WFM Malgorzata Bednarska-Bzdega, Jul 2026 · XI Międzynarodowy Festiwal Szachowy im. Lecha Kaczyńskiego w Bydgoszczy - Otwart y Turniej Szachów Błyskawicznych, 1825

* No blitz rating yet, so FIDE rates the game at the player's classical rating.

Event timeline · Blitz

13 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.

Performance rating by year

YearGamesScoreAvg oppTPR
20265325½16761662
20259316651540
202312313251132
20221721316980
2019301275475

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

Rated near Jan Kosiedowski · Blitz

World

  1. #=70724Anthony Leost1629.0
  2. #=70724Filip Pulapa1629.0
  3. #=70724Jan Kosiedowski1629.0
  4. #=70724Karol Nowak1629.0
  5. #=70724Szymon Lewandowski1629.0

Poland

  1. #=2370Tomasz Kazimierczak1630.0
  2. #=2378Filip Pulapa1629.0
  3. #=2378Jan Kosiedowski1629.0
  4. #=2378Karol Nowak1629.0
  5. #=2378Szymon Lewandowski1629.0

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

Jan Kosiedowski: Live FIDE Rating 1547