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KJ

Kostka, Jan

🇨🇿

FIDEFIDE 23740620· Male· Czech Republic· Born in 2007

Follow Jan KostkaTrack his monthly FIDE ratings, games, tournaments and more.

Jan Kostka, a 19-year-old Czech player, is rated 1722 — his current career high. He is on a steady climb with +47 Elo over the past 12 months. 13 rated games in the past year (≈10/year long-term). Recent appearances: SSZK - Krajsky prebor 2025-2026 r7-8 and Open Stare Mesto 2025. Also played 1 rapid (including Mistrovstvi CR amateru 2025 - rapid) and 2 blitz events (including Mistrovstvi CR amateru 2025 - blesk) recently.

Current rating

1722

Standard

Rpd1712·Blz1631

All-time high

1722

at best
Mar 2026 · age 19

Activity

17

games / yr avg. · ≈1/mo

13 past 12 mo · ≈1/mo
classical only
Moderately active

Signature stat

#102,012

#102,012 · players worldwide · of 216,808

Career timeline

7 entries
2026
All-time peak 1722
at age 19
Mar 2026
K-factor lowered to 20
at age 19
Jan 2026
2024
Best 12-month gain (+349 Elo)
1312 → 1661
Mar 2024
Crossed 1600
at age 17
Mar 2024
Crossed 1500
at age 17
Mar 2024
2023
Crossed 1400
at age 16
Sep 2023

Standard rating history

Last 12 months — activity & highlights

Best result
Open Stare Mesto 2025
perf 1816 (+119) · 5/9 · #43
Top opponent
vs Josef Filak 1,882
SSZK - Krajsky prebor 2025-2026 r7-8 · Feb 2026 · +4.3 Elo
Evolution
+47
1675 → 1722
Tournaments
5
15 games
Score
7.5/ 1550.0%
4W7D4L
Top 3 wins
1.[W]vsTobias Celko1,571·Open Stare Mesto 2025·R6·+13.0
2.[D]vsVera Marie Krejci1,875·Open Stare Mesto 2025·R3·+9.4
3.[W]vsOndrej Hornak1,692·SSZK - Krajsky prebor 2025-2026 r5-6·R5·+9.3
Top 3 losses
1.[L]vsTadeas Mocek1,724·Open Stare Mesto 2025·R7·-18.4
2.[L]vsMartin Mitacek1,821·Open Stare Mesto 2025·R5·-13.2
3.[L]vsAles JedlickaFM2,136·Open Stare Mesto 2025·R1·-3.0

Last 12 months — tournaments

5 events
EventDateScoreRankPerfΔ Elo
SSZK - Krajsky prebor 2025-2026 r7-8
Team
Feb 20260.5/1#731882+4.4
SSZK - Krajsky prebor 2025-2026 r5-6
Team
Jan 20261/1#532492+9.6
SSZK - Krajsky prebor 2025-2026 r2-3
Team
Nov 20250.5/1#831737+1.6
SSZK - Krajsky prebor 2025-2026 r1
Team
Oct 20250.5/1#511863+8.8
Open Stare Mesto 2025
Open Swiss
Aug 20255/9#431816+22.0
Hot streak: 5 tournaments without losing Elo.

Rankings

/
Czech Republic
#3,916
out of 6,368 players
Europe
#72,181
in continent
World
#102,011
out of 400,000+

National ranking

Europe & World

Europe
World
Czech Republic
1
🇨🇿Nguyen, Thai Dai VanFollow Thai Dai Van NguyenTrack their monthly FIDE ratings, games, tournaments and more.
2,633
2
🇨🇿Navara, DavidFollow David NavaraTrack their monthly FIDE ratings, games, tournaments and more.
2,624
3
🇨🇿Finek, VaclavFollow Vaclav FinekTrack their monthly FIDE ratings, games, tournaments and more.
2,573
4
🇨🇿Vykouk, JanFollow Jan VykoukTrack their monthly FIDE ratings, games, tournaments and more.
2,529
5
🇨🇿Hracek, ZbynekFollow Zbynek HracekTrack their monthly FIDE ratings, games, tournaments and more.
2,525
6
🇨🇿Kriebel, TadeasFollow Tadeas KriebelTrack their monthly FIDE ratings, games, tournaments and more.
2,524
7
🇨🇿Zilka, StepanFollow Stepan ZilkaTrack their monthly FIDE ratings, games, tournaments and more.
2,516
8
🇨🇿Bernasek, JanFollow Jan BernasekTrack their monthly FIDE ratings, games, tournaments and more.
2,501
9
🇨🇿Stocek, JiriFollow Jiri StocekTrack their monthly FIDE ratings, games, tournaments and more.
2,500
10
🇨🇿Krejci, JanFollow Jan KrejciTrack their monthly FIDE ratings, games, tournaments and more.
2,495
...
3916🇨🇿Kostka, Jan1,722
Europe
1
🇳🇴Carlsen, MagnusFollow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more.
2,840
2
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,767
3
🇩🇪Keymer, VincentFollow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more.
2,759
3
🇫🇷Firouzja, AlirezaFollow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more.
2,759
5
🇵🇱Duda, Jan-KrzysztofFollow Jan-Krzysztof DudaTrack their monthly FIDE ratings, games, tournaments and more.
2,739
6
🇳🇱Van Foreest, JordenFollow Jorden Van ForeestTrack their monthly FIDE ratings, games, tournaments and more.
2,735
7
🇭🇺Rapport, RichardFollow Richard RapportTrack their monthly FIDE ratings, games, tournaments and more.
2,729
8
🇫🇷Vachier-Lagrave, MaximeFollow Maxime Vachier-LagraveTrack their monthly FIDE ratings, games, tournaments and more.
2,717
8
🇦🇿Mamedyarov, ShakhriyarFollow Shakhriyar MamedyarovTrack their monthly FIDE ratings, games, tournaments and more.
2,717
10
🇹🇷Erdogmus, Yagiz KaanFollow Yagiz Kaan ErdogmusTrack their monthly FIDE ratings, games, tournaments and more.
2,708
...
72181🇨🇿Kostka, Jan1,722
World
1
🇳🇴Carlsen, MagnusFollow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more.
2,840
2
🇺🇸Nakamura, HikaruFollow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more.
2,792
3
🇺🇸Caruana, FabianoFollow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more.
2,788
4
🇺🇿Abdusattorov, NodirbekFollow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more.
2,780
5
🇺🇿Sindarov, JavokhirFollow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more.
2,776
6
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,767
7
🇩🇪Keymer, VincentFollow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more.
2,759
7
🇫🇷Firouzja, AlirezaFollow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more.
2,759
9
🇺🇸So, WesleyFollow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more.
2,754
10
🇨🇳Wei, YiFollow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more.
2,753
...
102011🇨🇿Kostka, Jan1,722