This page explains how Ilya Koshkin (USATT# 14637)'s rating went from 1589 to 1598 at the Golden Western States Open held on - 6 Feb 2000. 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.