This page explains how Hao An Do Ngoc (USATT# 275709)'s rating went from 1541 to 1571 at the HITTA Weekly League event from 14 Oct 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.