Format
KJ
Kozusnik, Jan
🇨🇿FIDE 23731796· Male· Czech Republic· Born in 2013
Follow Jan KozusnikTrack his monthly FIDE ratings, games, tournaments and more.
Jan Kozusnik, a 13-year-old Czech player, is rated 1643. He has slipped back 83 Elo over the past 12 months. 62 rated games in the past year (≈59/year long-term). Recent standard appearances include 1. liga mladeze D 2025-2026 r8-11, 45. Turnaj sachovych nadeji - U15, and Mistrovstvi CR mladeze 2026 - H14. His peak of 1783 was reached at age 12 (Nov 2025).
At junior level, he reached #70, #5 and #4 nationally in U14, U12 and U10.
Current rating
1643
Standard
Rpd1631·Blz1592
All-time high
1783
−140 pts below
Nov 2025 · age 12
Nov 2025 · age 12
Activity
58
games / yr avg. · ≈5/mo
62 past 12 mo · ≈5/mo
classical only
Active
classical only
Active
Signature stat
#130,811
#130,811 · players worldwide · of 218,279
Career timeline
11 entries2026
70th Czech U14 player
at age 13 · rated 1687
Jan 2026
2025
All-time peak 1783
at age 12 · −140 from today
Nov 2025
5th Czech U12 player
at age 12 · rated 1780
Apr 2025
Best 12-month gain (+378 Elo)
1295 → 1673
Feb 2025
2024
100 career games
at age 11
Sep 2024
Crossed 1600
at age 11
Mar 2024
Standard rating history
Peak
FIDE title
Threshold
First rated
FIDE recal.
Activity & highlights
Evolution
-83
1726 → 1643
Tournaments
17
65 games
Score
31/ 6547.7%
25W12D28L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
17 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Team | Apr 2026 | 2/4 | #30 | 1748 | +13.2 |
Open Swiss | Apr 2026 | 4/8 | #20 | 1644 | -56.4 |
Swiss | Mar 2026 | 3/9 | #21 | 1727 | +23.2 |
Team | Feb 2026 | 0.5/1 | #95 | 1778 | +6.8 |
Team | Jan 2026 | 1/2 | #50 | 1681 | -0.4 |
Team | Jan 2026 | 0/2 | #121 | 1008 | -28.8 |
Open Swiss | Dec 2025 | 4.5/6 | #17 | 1796 | -20.0 |
Team | Dec 2025 | 1/2 | #24 | 1777 | +4.8 |
Open Swiss | Dec 2025 | 0/1 | #42 | 894 | -22.0 |
Team | Nov 2025 | 0/1 | #105 | 1188 | -9.6 |
Most-Played Opponents
vsJustyna Pruskova
🇨🇿CZE·1513
+3 −2 =2
7 games·last met Dec 2025
View head-to-head →
vsKlara Vaclavkova
🇨🇿CZE·1484
+5 −1 =1
7 games·last met May 2024
View head-to-head →
vsDaniel Belocky
🇨🇿CZE·1900
+0 −6 =0
6 games·last met Dec 2025
View head-to-head →
vsIris Hamernikova
🇨🇿CZE·1834
+2 −1 =3
6 games·last met Sep 2025
View head-to-head →
vsJonas Kozelek
🇨🇿CZE·1688
+3 −2 =0
5 games·last met Apr 2026
View head-to-head →
Rankings
/
Czech Republic
#4,565
out of 6,361 players
Europe
#89,457
in continent
World
#130,805
out of 400,000+
National ranking
Europe & World
Europe
World
Czech Republic
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