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FIDE ID 523039604· born 1964 · last updated 5/12/2026
FIDE standard
1618
FIDE rapid
-
FIDE blitz
-
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Shortlist public Lichess and chess.com accounts for Fernandez Rosaenz 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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