This page explains how Yuenian Neal Zhang (USATT# 9712)'s rating went from 1922 to 1915 at the State Games of Indiana held on - 15 Aug 2004. 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.