This page explains how Viktor Troppmann (USATT# 49728)'s rating went from 1607 to 1596 at the 1997 2nd Annual US Nationals " held on - 7 Dec 1997. 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.