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It's a measure of confidence on your rating number, which is only an estimate of your actual playing strength. A high RD means your actual strength may within a large range of the number you currently have. A small RD means your true strength is probably much closer to the number you currently have.
by RonaldJosephCote a few minutes ago
The notion that <1000 is awful?
by BlunderLots a few minutes ago
The Scandinavian defense, and how to play it
by Rob3rtJamesFischer 5 minutes ago
Any YouTube Channels/Playlists/Videos of Purely Sicilian Defense?
by Rob3rtJamesFischer 6 minutes ago
Is there any chance that a 1300 rated player can beat a 2700 rated player?
by greenibex 7 minutes ago
What do you say when people ask how good at chess you are ?
by greenibex 9 minutes ago
Playing Black. Where did I first go Wrong?
by chessmasterjunior 9 minutes ago
Why didn't Fischer play Karpov
by greenibex 10 minutes ago
Easy way to re coat some pieces?
by cgrau 11 minutes ago
Beating an arch-opponent in a cool opening
by solskytz 12 minutes ago
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