This page explains how Dmitry Ryvkin (USATT# 29479)'s rating went from 1903 to 1871 at the Pensacola's "Datangtt.com" Winter Open held on - 18 Feb 2012. 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.