This is probably a good place to start: http://www.chess.com/article/view/chess-ratings---how-they-work
If you make it to the bottom, there are a couple of 'further reading' links, one specifically on the Glicko system.
This is probably a good place to start: http://www.chess.com/article/view/chess-ratings---how-they-work
If you make it to the bottom, there are a couple of 'further reading' links, one specifically on the Glicko system.
I have played 45 games of Online Chess and my RD is 109. I just finished a game (actually yesterday so I am sure the stats are updated), but my RD didn't change at all. How so?