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FIDE ID 55859984· born 2013 · last updated 5/12/2026
FIDE standard
1506
FIDE rapid
1769
FIDE blitz
1758
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Shortlist public Lichess and chess.com accounts for Kostovskaya via fuzzy name, country, and rating-band signals. Fastest path; works without sample games.
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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 55859984 and do not have usable games for Kostovskaya yet. Paste games below to run repertoire matching by play pattern.
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