This page explains how Gun Naung Sumlut (USATT# 89835)'s rating went from 1275 to 1221 at the ICC - Advanced League event from 23 Nov 2013. 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.