Glicko RD

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Avatar of GM_Phrostbyte

Does anyone know what Glicko RD means?

Thanks!

Avatar of notmtwain
GM_Phrostbyte wrote:

Does anyone know what Glicko RD means?

Thanks!

Chess Ratings- How they work

Avatar of baddogno

That's Professor Glicko's rating system which relies heavily on Ratings Deviation.  Let me get you the formula:

http://www.chess.com/forum/view/help-support/glicko-rd-increase

Avatar of woton

It's the margin of error in the rating calculation.  It's analogous to the standard deviation.

Avatar of GM_Phrostbyte

Okay thanks everyone! And another question, why does all our ratings start at 1200?

Avatar of wanmokewan
GM_Phrostbyte wrote:

Okay thanks everyone! And another question, why does all our ratings start at 1200?

Well, we need to start somewhere.

Avatar of GM_Phrostbyte

But why did chess.com choose 1200? Is there a reason? They could of chosen 1000 to start, or 1300...