This page explains how Arseni Mouchinski (USATT# 1150994)'s rating went from 1945 to 1886 at the LYTTC Friday Pro League event from 8 Oct 2021. 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.