This page explains how Kef Noorani (USATT# 217865)'s rating went from 1903 to 1939 at the 888 League event from 26 Sep 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.