This page explains how Narasimhan Ramakrishnan (USATT# 25608)'s rating went from 1955 to 1973 at the Illinois State Championships held on 25 Jun 2016 - 26 Jun 2016. 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.