If you want to learn more regarding how this rating is calculated, detailed data can be found during the documentation. You've 14 tiles and you have Mahjong by obtaining all 14 tiles into four sets and one particular pair. Sets of tiles are named pung or chow and they equivalent: https://mahjongblackscatter55431.topbloghub.com/42950256/examine-this-report-on-pola-mahjong-black-scatter