4 ms·
The bottom line is still that a chess.com rating will be more indicative of what a theoretical FIDE/USCF rating would be, and there's value in that, even if it'
by not_kurt_godel 5y ago
The bottom line is still that a chess.com rating will be more indicative of what a theoretical FIDE/USCF rating would be, and there's value in that, even if it's not rigorously tethered.
- thaurelia 5y agoComparison sites will give you ±150 Elo relative error (with I assume P=0.95). 150 Elo on levels below 2700 FIDE is almost night and day difference. Chess.com ratings show nothing about theoretical FIDE ratings. Comparison tables have been built with data mining and lucky guesses, there's no quality difference between Chess.com <-> FIDE and LiChess <-> FIDE.
- ajkjk 5y agoYes they do show 'something'. They correlate with them. It's just a fact that chess.com ratings are closer to 'real' ratings than Lichess are. It's not perfect but that doesn't mean it's a zero-information statement either.