This page explains how William R. Swift (USATT# 69926)'s rating went from 1216 to 1220 at the 2012 NH Fall Round Robin Open held on - 22 Apr 2012. 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.