This page explains how Steven Horowitz (USATT# 6796)'s rating went from 1982 to 1980 at the Marcy Monasterial Mem held on - 31 Jan 1998. 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.