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FIDE ID 21065756· born 1962 · last updated 9/24/2026
Search for the accounts Jacek Kosman plays online, then open one to see its openings and practice the lines.
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FIDE rapid
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FIDE blitz
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No tournament games of Jacek Kosman are on file yet, so this search uses their name, country and rating. Adding their games under More options makes it stronger.
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Results are leads to check, not proof of who owns an account.
Search for Jacek Kosman's online accounts first. Then open one to see the openings it plays, move by move, and practice the positions.