This page explains how Ayan Kumar Bagchi (USATT# 76908)'s rating went from 1773 to 1757 at the 2011 Potomac Fall Open held on - 19 Nov 2011. 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.