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FIDE ID 12977683· born 2004 · last updated 5/12/2026
FIDE standard
1816
FIDE rapid
1845
FIDE blitz
1828
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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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We checked our stored public PGN sources for FIDE ID 12977683 and do not have usable games for Kostanyan yet. Paste games below to run repertoire matching by play pattern.
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