This page explains how Ilya Bushkanets (USATT# 65222)'s rating went from 1741 to 1729 at the Columbus RR held on - 7 Feb 1998. 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.