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FIDE ID 54567831 · born 2000 · last updated 5/12/2026
Standard
1653
Rapid
1637
Blitz
1669
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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 54567831 and do not have usable games for Fonseca Alonso yet. Paste games below to run repertoire matching by play pattern.
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