This page explains how Xiaofeng (frank Zhu (USATT# 27551)'s rating went from 1601 to 1631 at the 2005 NC State Games held on - 26 Jun 2005. 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.