麻雀点数ドリル — A Mahjong Scoring Quiz

Why it surfaced

It turns one of mahjong’s least glamorous skills—combining yaku, han, fu, and score tables—into repeatable drills with no registration. The site also includes a fu-calculation guide, yaku list, score chart, and a separate tile-efficiency practice section.

A free Japanese web app for practicing riichi mahjong score calculations through randomly generated four-choice quizzes.