This page explains how Kaushik Shivakumar (USATT# 89836)'s rating went from 1661 to 1647 at the ICC - Advanced League event from 26 May 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.