This page explains how Alex Kotlyar (USATT# 21222)'s rating went from 1552 to 1661 at the 2010 Indiana State Closed held on - 25 Apr 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.