Format
KJ
Klosowski, Jonatan
🇵🇱FIDE 545044040· Male· Poland· Born in 1996
Follow Jonatan KlosowskiTrack his monthly FIDE ratings, games, tournaments and more.
Jonatan Klosowski, a 30-year-old Polish player, is rated 1456 — just 4 short of his peak of 1460 (Apr 2026, age 30). He plays occasionally (7 games in the last 12 months). Recent appearances: II Arche Chess Open B and I Kujawski Integracyjny Festiwal Szachowy Feniksa - OPEN B.. Also played 3 rapid (including IV Charytatywny Mikolajkowy Turniej Szachowy SZACH-MAT) and 2 blitz events (including I Kujawski Integracyjny Festiwal Szachowy FENIKSA- I Otwarte Mistrzostwa Powiatu Inowroclawskiego w Szachach Blyskawicznych) recently.
Current rating
1456
Standard
Rpd—·Blz1433
All-time high
1460
−4 pts below
Apr 2026 · age 30
Apr 2026 · age 30
Activity
12
games / yr avg. · ≈1/mo
7 past 12 mo · ≈1/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#200,752
#200,752 · players worldwide · of 216,808
Career timeline
5 entries2026
Best 12-month gain (+33 Elo)
1427 → 1460
Apr 2026
All-time peak 1460
at age 30 · −4 from today
Apr 2026
2025
Crossed 1400
at age 29
Nov 2025
Crossed 1200
at age 29
Nov 2025
First FIDE rating
1427 · at age 29
Nov 2025
Standard rating history
Last 12 months — activity & highlights
Evolution
+29
1427 → 1456
Tournaments
2
11 games
Score
4.5/ 1140.9%
4W1D6L
Top 3 wins
2.[W]vsTymoteusz Kazmierczak1,488·I Kujawski Integracyjny Festiwal Szachowy Feniksa - OPEN B.·R4·+23.5
Top 3 losses
Last 12 months — tournaments
2 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Open Swiss | Feb 2026 | 3.5/2 | #29 | 2349 | +32.8 |
Open Swiss | Oct 2025 | 1/5 | #38 | 1253 | 0.0 |
Rankings
/
Poland
#5,750
out of 10,756 players
Europe
#122,937
in continent
World
#200,601
out of 400,000+
National ranking
Europe & World
Europe
World
Poland
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Europe
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World
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