This page explains how Kyongsook Kim (USATT# 83553)'s rating went from 1593 to 1590 at the 2022 April Open @ Princeton Pong held on 2 Apr 2022 - 3 Apr 2022. 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.