Format
SJ
Siska, Jan
🇨🇿FIDE 23767197· Male· Czech Republic· Born in 2009
Follow Jan SiskaTrack his monthly FIDE ratings, games, tournaments and more.
Jan Siska, a 17-year-old Czech player, is rated 1848 — just 18 short of his peak of 1866 (Apr 2026, age 17). He plays occasionally (9 games in the last 12 months). Recent appearance: SSOK - Krajsky prebor 2025-2026 r11.
At junior level, he reached #91, #89 and #85 nationally in U18, U16 and U14.
Current rating
1848
Standard
Rpd1761·Blz—
All-time high
1866
−18 pts below
Apr 2026 · age 17
Apr 2026 · age 17
Activity
13
games / yr avg. · ≈1/mo
9 past 12 mo · ≈1/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#62,017
#62,017 · players worldwide · of 218,279
Career timeline
8 entries2026
91st Czech U18 player
at age 17 · rated 1866
Apr 2026
All-time peak 1866
at age 17 · −18 from today
Apr 2026
2025
Crossed 1800
at age 16
Dec 2025
89th Czech U16 player
at age 16 · rated 1798
Mar 2025
2024
Best 12-month gain (+323 Elo)
1457 → 1780
Sep 2024
Crossed 1600
at age 15
Mar 2024
Standard rating history
Peak
FIDE title
Threshold
First rated
FIDE recal.
Activity & highlights
Evolution
+79
1769 → 1848
Tournaments
6
10 games
Score
5.5/ 1055.0%
4W3D3L
Top 3 wins
Top 2 losses
Last 12 months — tournaments
6 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Team | Apr 2026 | 0/1 | #59 | 1133 | -16.8 |
Team | Mar 2026 | 1/1 | #35 | 2553 | +14.4 |
Team | Feb 2026 | 1/2 | #44 | 1997 | +14.4 |
Team | Jan 2026 | 1.5/2 | #15 | 2035 | +23.2 |
Team | Nov 2025 | 1.5/2 | #6 | 2137 | +36.8 |
Team | Oct 2025 | 0.5/1 | #43 | 1902 | +7.2 |
Rankings
/
Czech Republic
#2,596
out of 6,361 players
Europe
#45,351
in continent
World
#62,016
out of 400,000+
National ranking
Europe & World
Europe
World
Czech Republic
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