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FIDE ID 3522121· born 1970 · last updated 9/24/2026
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Shortlist public Lichess and chess.com accounts for Fernandez del 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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AI matching by sample game
We checked our stored public PGN sources for FIDE ID 3522121 and do not have usable games for Fernandez del Castillo yet. Paste games below to run repertoire matching by play pattern.
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