Format
KO
Koscielnik, Ondrej
🇨🇿FIDE 23751401· Male· Czech Republic· Born in 2013
Follow Ondrej KoscielnikTrack his monthly FIDE ratings, games, tournaments and more.
Ondrej Koscielnik, a 13-year-old Czech player, is rated 1642 — just 1 short of his peak of 1643 (Dec 2025, age 12). He has held steady between 1600 and 1650 for 6 months. 12 rated games in the past year (≈5/year long-term). Recent appearances: Mistrovstvi Moravy a Slezska 2025 - U14 and 8. Open Bohumin 2025 H - U14. Also played 3 rapid (including DAFO CUP 2025) and 1 blitz events (including Mistrovstvi Moravy a Slezska 2025 - blesk delay) recently.
At junior level, he reached #87 and #42 nationally in U14 and U12.
Current rating
1642
Standard
Rpd1580·Blz1519
All-time high
1643
−1 pts below
Dec 2025 · age 12
Dec 2025 · age 12
Activity
5
games / yr avg.
12 past 12 mo · ≈1/mo
classical only
Occasional
classical only
Occasional
Signature stat
#130,651
#130,651 · players worldwide · of 216,808
Career timeline
7 entries2026
87th Czech U14 player
at age 13 · rated 1643
Jan 2026
2025
42nd Czech U12 player
at age 12 · rated 1643
Dec 2025
Crossed 1600
at age 12
Dec 2025
Crossed 1500
at age 12
Dec 2025
Crossed 1400
at age 12
Dec 2025
All-time peak 1643
at age 12 · −1 from today
Dec 2025
Standard rating history
Last 12 months — activity & highlights
Top opponent
Evolution
—
Tournaments
2
18 games
Score
13/ 1872.2%
12W2D4L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
2 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Open Swiss | Oct 2025 | 4.5/9 | #15 | 1597 | 0.0 |
Open Swiss | Jul 2025 | 8.5/1 | #1 | 1605 | 0.0 |
Rankings
/
Czech Republic
#4,556
out of 6,368 players
Europe
#89,335
in continent
World
#130,645
out of 400,000+
National ranking
Europe & World
Europe
World
Czech Republic
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