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FIDE ID 21816620 · born 2005 · last updated 5/12/2026
Standard
1503
Rapid
1487
Blitz
1482
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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 21816620 and do not have usable games for Jacek yet. Paste games below to run repertoire matching by play pattern.
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