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FIDE ID 21860840· born 2004 · last updated 5/12/2026
FIDE standard
1436
FIDE rapid
1435
FIDE blitz
-
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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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AI matching by sample game
We checked our stored public PGN sources for FIDE ID 21860840 and do not have usable games for Sieradz yet. Paste games below to run repertoire matching by play pattern.
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