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FIDE ID 7503270· born 2017 · last updated 9/24/2026
Search for the accounts Oscar Mathijssen plays online, then open one to see its openings and practice the lines.
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No tournament games of Oscar Mathijssen 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 Oscar Mathijssen's online accounts first. Then open one to see the openings it plays, move by move, and practice the positions.