This page explains how Zoltan Boldy (USATT# 2783)'s rating went from 2186 to 2158 at the California Open held on - 26 Jun 2005. 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.