This page explains how Lily Zhang (USATT# 31126)'s rating went from 2229 to 2230 at the Newgy Northern California Fall held on - 5 Oct 2008. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.