This page explains how Will Shortz (USATT# 46018)'s rating went from 1741 to 1663 at the Frank Dwelly Cup held on - 15 Mar 2009. 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.