This page explains how Jim Chai (USATT# 1648)'s rating went from 1229 to 1269 at the SAC-REC Fall Open held on - 15 Oct 1994. 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.