Format
BR
Bosak, Rene
🇨🇿FIDE 371742· Male· Czech Republic· Born in 2004
Follow Rene BosakTrack his monthly FIDE ratings, games, tournaments and more.
Rene Bosak, a 22-year-old Czech player, is rated 1718 — his current career high. He plays occasionally (3 games in the last 12 months) and took a 107-month break between Dec 2016 and Dec 2025. Recent appearance: MKSS - Mestsky prebor Ostrava 2025-2026 r9.
At junior level, he reached #67, #43 and #19 nationally in U14, U12 and U10.
Current rating
1718
Standard
Rpd—·Blz1651
All-time high
1718
at best
Apr 2026 · age 22
Apr 2026 · age 22
Activity
1
games / yr avg.
3 past 12 mo
classical only
Occasional
classical only
Occasional
Signature stat
#103,476
#103,476 · players worldwide · of 218,279
Career timeline
13 entries2026
All-time peak 1718
at age 22
Apr 2026
2024
Crossed 1600
at age 20
Mar 2024
2023
K-factor lowered to 20
at age 19
Jan 2023
2017
Best 12-month gain (+136 Elo)
1382 → 1518
Sep 2017
67th Czech U14 player
at age 13 · rated 1518
Jan 2017
2016
Crossed 1500
at age 12
Dec 2016
Standard rating history
Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19
FIDE recal.
Activity & highlights
Evolution
+7
1711 → 1718
Tournaments
3
3 games
Score
2/ 366.7%
2W0D1L
Top 2 wins
Top 1 loss
Last 12 months — tournaments
3 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Team | Mar 2026 | 1/1 | #8 | 2457 | +8.4 |
Team | Feb 2026 | 1/1 | #18 | 2507 | +10.2 |
Team | Nov 2025 | 0/1 | #67 | 889 | -10.6 |
Rankings
/
Czech Republic
#3,961
out of 6,361 players
Europe
#73,170
in continent
World
#103,474
out of 400,000+
National ranking
Europe & World
Europe
World
Czech Republic
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