Format
SJ
Sosna, Jan
IM🇨🇿FIDE 304379· Male· Czech Republic· Born in 1960
Follow Jan SosnaTrack his monthly FIDE ratings, games, tournaments and more.
Jan Sosna, a 66-year-old Czech International Master, is rated 2283 and sitting in the top 2% of Czech players, and in the top 2% worldwide. He has held steady between 2250 and 2300 for 3 years. 10 rated games in the past year (≈29/year long-term). Recent appearance: 2. liga E 2025-2026 r10-11. His peak of 2441 was reached at age 43 (Oct 2003, Czech #23 at the time).
Awarded IM in 2004 (age 44).
Current rating
2283
Standard
Rpd2325·Blz2425
All-time high
2441
−158 pts below
Oct 2003 · age 43
Oct 2003 · age 43
Activity
14
games / yr avg. · ≈1/mo
10 past 12 mo · ≈1/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
Top 2%
#125 · Czech players · of 5,624
Career timeline
18 entries2026
3rd Czech 65-70 player
at age 66 · rated 2288
Jan 2026
2021
5th Czech 60-65 player
at age 61 · rated 2343
Nov 2021
2018
5th Czech 55-60 player
at age 58 · rated 2352
Nov 2018
2016
500 career games
at age 56
Feb 2016
2011
2nd Czech 50-55 player
at age 51 · rated 2398
Nov 2011
2009
Re-crossed 2400
at age 49
Sep 2009
Standard rating history
Activity & highlights
Evolution
0
2283 → 2283
Tournaments
5
10 games
Score
7/ 1070.0%
4W6D0L
Top 3 wins
Top losses
Undefeated in the last 12 months.
Last 12 months — tournaments
5 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Team | Mar 2026 | 1.5/2 | #9 | 2345 | +1.5 |
Team | Feb 2026 | 1/2 | #38 | 2140 | -3.9 |
Team | Jan 2026 | 1/2 | #56 | 2184 | -2.9 |
Team | Nov 2025 | 1.5/2 | #14 | 2277 | 0.0 |
Team | Nov 2025 | 2/2 | #2 | 2908 | +5.4 |
Most-Played Opponents
vsStanislav JasnyIM
🇨🇿CZE·2182
+1 −2 =9
12 games·last met Jul 2018
View head-to-head →
vsJakub RoubalikIM
🇨🇿CZE·2298
+4 −3 =4
11 games·last met Nov 2022
View head-to-head →
vsJosef MudrakFM
🇨🇿CZE·2146
+3 −1 =6
10 games·last met Nov 2023
View head-to-head →
vsJozef Michenkam
🇨🇿CZE
+5 −1 =3
9 games·last met Jan 2020
View head-to-head →
vsAlois LancIM
🇸🇰SVK·2257
+4 −2 =3
9 games·last met Apr 2019
View head-to-head →
Rankings
/
Czech Republic
#125
out of 6,368 players
Europe
#3,091
in continent
World
#4,616
out of 400,000+
National ranking
Europe & World
Europe
World
Czech Republic
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