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On
IGS, players can set their rank from 30 kyu (30k) to 4 dan (4d). However,
IGS determines a player's rating based upon both the performance of
the player and his opponents. Ratings are calculated once a day.
Because opponents' performances effect a players rating, a player's
rating may change even when they do not play any games. This is part
of IGS's system for keeping ratings as accurate as possible.
The links in the upper right explaining commands related to the ratings
system. This includes how to enter the rating system, and how ratings
are calculated.
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