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FIDE ID 91105439 · born 1996 · last updated 5/12/2026
Standard
-
Rapid
1423
Blitz
1545
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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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We checked our stored public PGN sources for FIDE ID 91105439 and do not have usable games for Kostuj yet. Paste games below to run repertoire matching by play pattern.
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