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FIDE ID 40133230· born 1989 · last updated 9/24/2026
Search for the accounts Martijn Koelman plays online, then open one to see its openings and practice the lines.
FIDE standard
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FIDE rapid
1601
FIDE blitz
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No tournament games of Martijn Koelman 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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Search for Martijn Koelman's online accounts first. Then open one to see the openings it plays, move by move, and practice the positions.