This page explains how Igor Shulkin (USATT# 18534)'s rating went from 2286 to 2285 at the 2010 Spintech Spinathon held on - 30 May 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.