This page explains how Fred Bomberger (USATT# 1780)'s rating went from 1234 to 1243 at the 4th Holiday Classic 2 Player T held on - 2 Jan 2005. 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.