Format
BJ
Bosak, Jan
🇨🇿FIDE 314692· Male· Czech Republic· Born in 1961
Follow Jan BosakTrack his monthly FIDE ratings, games, tournaments and more.
Jan Bosak, a 65-year-old Czech player, is rated 2078 and sitting in the top 8% of players worldwide. He has fluctuated between 1983 and 2078 over the past 2 years. 65 rated games in the past year (≈18/year long-term). Recent standard appearances include Memorial Vratislava Hory 2026 - open A, 2. liga E 2025-2026 r10-11, and SSZK - Krajsky prebor 2025-2026 r9-10. Also played 1 rapid event (including Open Povazske Podhradie 2025) recently. He had 2 career breaks: 33 months (2009–2012) and 16 months (2022–2023). His peak of 2233 was reached at age 42 (Jul 2003).
Current rating
2078
Standard
Rpd2021·Blz2017
All-time high
2233
−155 pts below
Jul 2003 · age 42
Jul 2003 · age 42
Activity
46
games / yr avg. · ≈4/mo
57 past 12 mo · ≈5/mo
classical only
Active
classical only
Active
Signature stat
Top 8%
#17,535 · players worldwide · of 218,279
Career timeline
18 entries2026
Best 12-month gain (+61 Elo)
1999 → 2060
Mar 2026
2025
Re-crossed 2000
at age 64
Apr 2025
2022
48th Czech 60-65 player
at age 61 · rated 2082
Apr 2022
Inactive for 16 months
paused at 2082 → returned at 2079
Apr 2022
2017
34th Czech 55-60 player
at age 56 · rated 2151
Jul 2017
6-month rising streak
+27 Elo
May 2017
Standard rating history
Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19
Activity & highlights
Evolution
+17
2061 → 2078
Tournaments
16
57 games
Score
38.5/ 5767.5%
28W21D8L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
16 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | Apr 2026 | 4.5/7 | #9 | 2085 | +8.6 |
Team | Mar 2026 | 1.5/2 | #17 | 2094 | +2.0 |
Team | Mar 2026 | 1.5/2 | #17 | 2202 | +7.2 |
Team | Feb 2026 | 0.5/1 | #100 | 1973 | -2.2 |
Team | Feb 2026 | 1.5/2 | #13 | 2190 | +6.8 |
Open Swiss | Jan 2026 | 5.5/8 | #10 | 2062 | +6.2 |
Team | Jan 2026 | 1/1 | #48 | 2581 | +3.8 |
Team | Jan 2026 | 1/1 | #26 | 2805 | +9.2 |
Team | Dec 2025 | 1/1 | #17 | 2682 | +6.0 |
Team | Nov 2025 | 0.5/1 | #70 | 1987 | -1.6 |
Rankings
/
Czech Republic
#607
out of 6,361 players
Europe
#12,784
in continent
World
#17,535
out of 400,000+
National ranking
Europe & World
Europe
World
Czech Republic
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