This page explains how Tadeusz Alberski (USATT# 83164)'s rating went from 1429 to 1320 at the Rockford Fall Open held on - 17 Oct 2010. 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.