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FIDE ID 14903458 · born 1971 · last updated 5/12/2026
Standard
2135
Rapid
2132
Blitz
2081
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Shortlist public Lichess and chess.com accounts for Kostelny via fuzzy name, country, and rating-band signals. Fastest path; works without sample games.
AI matching by sample game
Searching public databases for known games of Kostelny…
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Real tournament games of Jozef Kostelny from public sources. Select a game to replay it on the board.
All games
+0 =0 -4 · score 0% · 4 games
As White
+0 =0 -1 · score 0% · 1 game
As Black
+0 =0 -3 · score 0% · 3 games
Nytra,Ondrej(2127)
Kostelny,J(2126)1-0
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As White
As Black
| Event | Games | Dates |
|---|---|---|
| 37th Czech Open E 2026 | 1 | 2026-07-18 |
| 40th ECC Open 2025 | 1 | 2025-10-19 |
| 36th Czech Open E 2025 | 1 | 2025-07-18 |
| 35th Czech Open E 2024 | 1 | 2024-07-12 |
Prep report
Their repertoire vs yours
Once you have a candidate account, we cross-reference its opening tree against your imported games, surfacing the lines they play that you don’t know, the leaks in their repertoire you can punish, and the gaps in yours you’ll need to plug before the game.
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AI matching from found games
We already found 4 of Kostelny’s real games in public databases. No PGNs needed: one click shortlists public accounts with similar opening choices.
Sources: twic (4) - latest 7/18/2026
Helps match accounts whose display name is not written in Latin letters.
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Uses 1 credit. Results take a few minutes; the results page updates itself.