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FIDE ID 317028909· born 1978 · last updated 9/24/2026
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FIDE standard
1914
FIDE rapid
-
FIDE blitz
-
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Shortlist public Lichess and chess.com accounts for De Ridder 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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