This page explains how Nabil Shehadeh (USATT# 65534)'s rating went from 1641 to 1825 at the Schaumburg Fall Open held on - 15 Sep 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.