This page explains how Louis Schlessinger (USATT# 86783)'s rating went from 1650 to 1666 at the Trolley Car TTC Tuesday Night League event from 23 Dec 2015. 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.