Format
KJ
Kostisce, Jan
🇨🇿FIDE 342726· Male· Czech Republic· Born in 1975
Follow Jan KostisceTrack his monthly FIDE ratings, games, tournaments and more.
Jan Kostisce, a 51-year-old Czech player, is rated 1720. He has slipped back 67 Elo over the past 12 months. 12 rated games in the past year (≈7/year long-term). Recent standard appearances include UKSS - Krajsky prebor III B - Finale A 2025-2026 r2-3, UKSS - Krajsky prebor II B 2025-2026 r8-9, and UKSS - Krajsky prebor III B 2025-2026 r7. He had 2 career breaks: 43 months (2018–2021, COVID-19 included) and 20 months (2022–2023). His peak of 1812 was reached at age 49 (Mar 2024).
Current rating
1720
Standard
Rpd—·Blz—
All-time high
1812
−92 pts below
Mar 2024 · age 49
Mar 2024 · age 49
Activity
9
games / yr avg. · ≈1/mo
12 past 12 mo · ≈1/mo
classical only
Occasional
classical only
Occasional
Signature stat
#102,783
#102,783 · players worldwide · of 218,279
Career timeline
9 entries2024
Best 12-month gain (+121 Elo)
1686 → 1807
Nov 2024
Crossed 1800
at age 49
Mar 2024
All-time peak 1812
at age 49 · −92 from today
Mar 2024
2022
Inactive for 20 months
paused at 1699 → returned at 1686
Feb 2022
2018
Inactive for 43 months
paused at 1706 → returned at 1700
Mar 2018
2015
K-factor lowered to 20
at age 40
May 2015
Standard rating history
Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19
FIDE recal.
Activity & highlights
Evolution
-67
1787 → 1720
Tournaments
10
12 games
Score
2/ 1216.7%
1W2D9L
Top 2 wins
Top 3 losses
Last 12 months — tournaments
10 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Team | Mar 2026 | 0/1 | #26 | 1052 | -6.6 |
Team | Feb 2026 | 0/1 | #96 | 1054 | -7.2 |
Team | Feb 2026 | 0/1 | #22 | 1094 | -5.8 |
Team | Jan 2026 | 0/1 | #25 | 898 | -11.6 |
Team | Dec 2025 | 1/1 | #5 | 2620 | +12.0 |
Team | Nov 2025 | 0.5/2 | #59 | 1565 | -10.8 |
Team | Nov 2025 | 0/1 | #36 | 816 | -14.2 |
Team | Nov 2025 | 0.5/2 | #69 | 1664 | -5.4 |
Team | Oct 2025 | 0/1 | #19 | 953 | -11.0 |
Team | Oct 2025 | 0/1 | #65 | 1190 | -4.8 |
Rankings
/
Czech Republic
#3,941
out of 6,361 players
Europe
#72,715
in continent
World
#102,781
out of 400,000+
National ranking
Europe & World
Europe
World
Czech Republic
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