Took the rating system from the video explaining chess ratings on
Por um escritor misterioso
Descrição
Chess Ratings Explained – Chess Armory
ROO GAMES Quick Chess - Learn Chess with 8 Simple
Chess and Disability
Chess - Wikipedia
Chess.com rating review estimates are biased by the ratings of the
Understanding The Chess Rating System, by John Cepoi
Elo Rating System - Everything You Need to Know
How the Rating System Works - Chess Forums
Chess Ratings - Chess Terms
How Gurgaon's IM Aaditya Dhingra gained nearly 600 FIDE rating
Chess: Everything You Need to Know
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