This page explains how Bella Livshin (USATT# 64912)'s rating went from 1948 to 1951 at the Meiklejohn North American Seni held on - 3 Jun 2007. 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.