A tournament or player-card link: your FIDE Elo and UKD change is calculated round by round, free, no account needed. Next-round opponent prediction is for members.
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The prediction uses the FIDE Dutch pairing system. Test: 13 Turkish events, 63 rounds, 1,635 boards → 99.2% of boards matched the arbiter's official pairing; 60 of 63 rounds were exact. Every mismatching round involved arbiter intervention (manual pairing or a late entry).
Analyse your opponent's games with Stockfish 19: openings, accuracy and typical mistakes. Every tournament in the world in one calendar.
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