This page explains how Zhen Chen (USATT# 269930)'s rating went from 1469 to 1449 at the 2023 Butterfly Houston Lunar New Year Tournament held on 28 Jan 2023 - 28 Jan 2023. 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.