This page explains how Marcin Kurcz (USATT# 72817)'s rating went from 1604 to 1602 at the Schaumburg November Open held on - 10 Nov 2007. 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.