This page explains how Rudy Albert Hartmann (USATT# 23714)'s rating went from 1632 to 1591 at the 1998 USATT Nationals held on - 20 Dec 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.