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FIDE ID 3964841· born 2009 · last updated 5/12/2026
FIDE standard
1611
FIDE rapid
1765
FIDE blitz
1413
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Shortlist public Lichess and chess.com accounts for Guatache Castillo 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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