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FIDE ID 54799430· born 2012 · last updated 9/24/2026
Search for the accounts Mario Casas Fonseca plays online, then open one to see its openings and practice the lines.
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No tournament games of Mario Casas Fonseca 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 Mario Casas Fonseca's online accounts first. Then open one to see the openings it plays, move by move, and practice the positions.