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FIDE ID 4231783 · born 1983 · last updated 5/12/2026
Standard
1823
Rapid
1875
Blitz
1815
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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 4231783 and do not have usable games for Deftereos yet. Paste games below to run repertoire matching by play pattern.
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