This page explains how Hiep Hoa Cung (USATT# 58162)'s rating went from 1961 to 1996 at the US Nationals held on - 21 Dec 1997. 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.