This page explains how Constantin Okrainets (USATT# 17885)'s rating went from 1682 to 1640 at the NJTTC Monday League event from 18 Jan 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.