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FIDE ID 12933635· born 1951 · last updated 5/12/2026
FIDE standard
1943
FIDE rapid
1929
FIDE blitz
1925
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Shortlist public Lichess and chess.com accounts for Haelsig via fuzzy name, country, and rating-band signals. Fastest path; works without sample games.
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Prep report
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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