This page explains how (Andy) K.M. Leung (USATT# 33494)'s rating went from 1543 to 1656 at the U.S. National Championships held on - 16 Dec 2006. 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.