This page explains how Tadeusz Alberski (USATT# 83164)'s rating went from 1237 to 1259 at the Wheeling Summer Open held on - 11 Jun 2011. 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.