Format
KJ
Koska, Jiri
🇸🇰FIDE 73620874· Male· Slovakia· Born in 2007
Follow Jiri KoskaTrack his monthly FIDE ratings, games, tournaments and more.
Jiri Koska, a 19-year-old Slovak player, is rated 2035. He is climbing fast, having gained +136 Elo over the past 12 months. 71 rated games in the past year (≈58/year long-term). Recent standard appearances include 3. liga D2 2025 2026 R9-11, Majstrovstva Slovenska 2026 - kategoria C20, and 1. liga Vychod 2025 2026 R10-11. Also played 2 rapid events (including MSR v rapid sachu 2026) recently. His peak of 2081 was reached at age 17 (Nov 2024).
At junior level, he reached #28, #12, #11, #14, #12 and #19 nationally in U20, U18, U16, U14, U12 and U10.
Current rating
2035
Standard
Rpd1849·Blz1753
All-time high
2081
−46 pts below
Nov 2024 · age 17
Nov 2024 · age 17
Activity
75
games / yr avg. · ≈6/mo
63 past 12 mo · ≈5/mo
classical only
Active
classical only
Active
Signature stat
#22,585
#22,585 · players worldwide · of 218,279
Career timeline
18 entries2026
28th Slovak U20 player
at age 19 · rated 2035
May 2026
500 career games
at age 19
May 2026
Re-crossed 2000
at age 19
Feb 2026
K-factor lowered to 20
at age 19
Jan 2026
2025
Re-crossed 2000
at age 18
Dec 2025
2024
12th Slovak U18 player
at age 17 · rated 2081
Nov 2024
Standard rating history
Peak
FIDE title
Threshold
First rated
COVID-19
FIDE recal.
Activity & highlights
Top opponent
Evolution
+135
1900 → 2035
Tournaments
21
63 games
Score
39.5/ 6362.7%
29W21D13L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
18 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Team | Apr 2026 | 1/1 | #54 | 2576 | +4.0 |
Swiss | Apr 2026 | 6/9 | #4 | 2046 | +11.4 |
Team | Mar 2026 | 1/2 | #52 | 2042 | +1.4 |
Team | Mar 2026 | 1/2 | #38 | 1999 | -1.0 |
Team | Mar 2026 | 0.5/1 | #33 | 2061 | +1.2 |
Team | Feb 2026 | 1.5/2 | #24 | 2177 | +8.8 |
Open Swiss | Jan 2026 | 5/7 | #4 | 1982 | +1.8 |
Team | Jan 2026 | 0.5/1 | #61 | 1955 | -1.2 |
Team | Jan 2026 | 1/1 | #28 | 2791 | +9.8 |
Team | Dec 2025 | 1/2 | #50 | 1874 | -14.0 |
Most-Played Opponents
vsJuraj Vargosko
🇸🇰SVK·1924
+4 −7 =0
11 games·last met Dec 2024
View head-to-head →
vsIgor Skreko
🇸🇰SVK·2217
+1 −6 =1
8 games·last met Sep 2023
View head-to-head →
vsMaros Volanek
🇸🇰SVK·1998
+2 −2 =3
7 games·last met Apr 2026
View head-to-head →
vsMarek Tobias Janik
🇸🇰SVK·2163
+1 −5 =0
6 games·last met Apr 2026
View head-to-head →
vsVasil Slivka
🇸🇰SVK·1593
+3 −0 =3
6 games·last met Oct 2024
View head-to-head →
Rankings
/
Slovakia
#342
out of 3,199 players
Europe
#16,616
in continent
World
#22,585
out of 400,000+
National ranking
Europe & World
Europe
World
Slovakia
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World
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