This page explains how Kai Zarehbin (USATT# 91905)'s rating went from n/a to 304 at the Concord Cup Youth Open Tournament held on - 27 Oct 2013. 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.