This page explains how Stanley Kahan (USATT# 8442)'s rating went from 1261 to 1254 at the Sun City Seniors held on - 3 May 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.