This page explains how Janusz Franeczek (USATT# 26185)'s rating went from 2172 to 2169 at the Schaumburg August Open held on - 27 Aug 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.