This page explains how Ian Seidenfeld (USATT# 80503)'s rating went from 2022 to 2022 at the 2018 Minnesota State Championships held on 27 Jan 2018 - 28 Jan 2018. 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.