This page explains how Marcin Wrzoszczyk (USATT# 88361)'s rating went from 1618 to 1626 at the Aurora Winter Open held on - 29 Dec 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.