This page explains how Chingyao Chou (USATT# 97131)'s rating went from 1166 to 1159 at the 2024 Butterfly Triangle Cup held on 21 Mar 2024 - 24 Mar 2024. 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.