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FIDE ID 4689615 · born 1975 · last updated 5/12/2026
Standard
1886
Rapid
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Blitz
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Shortlist public Lichess and chess.com accounts for Kostowski 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 Kostowski…
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Real tournament games of Kostowski, Ireneus, Dr. from public sources. Select a game to replay it on the board.
All games
+4 =1 -4 · score 50% · 9 games
As White
+2 =1 -2 · score 50% · 5 games
As Black
+2 =0 -2 · score 50% · 4 games
Trybus,Dominika(1870)
Kostowski,I(1886)0-1
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As White
As Black
| Event | Games | Dates |
|---|---|---|
| Rubinstein Mem Open B | 9 | 2025-08-16 to 2025-08-24 |
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.
Pick a candidate account above to unlock the report.
AI matching from found games
We already found 9 of Kostowski’s real games in public databases. No PGNs needed: one click shortlists public accounts with similar opening choices.
Sources: twic (9) - latest 8/24/2025
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.