Mahjong Efficiency - AI Guide

Get a grounded answer to “what should I discard?”

Mahjong Efficiency is a tile-efficiency app: enter your hand and table state, and the AI shows its pick, ukeire, and danger. In 10-question rate challenges, your decision accuracy becomes a rating.

■ Efficiency analyzer Enter your hand, discards, dora, and calls to compare ukeire and distance to tenpai for each discard, plus danger against opponent riichi. Whether to riichi or stay damaten is ranked on the same scale.

■ Rate challenge Ten timed nanikiru (“what to discard”) questions. Your rating moves with difficulty. Three free sets per day; watch an ad for more.

■ Everyone's Nanikiru Post a tough position and see how others vote. Up to five posts per day.

■ Review and share Revisit solved problems later. Export interesting positions as images.

Rating calculation and answer checks run on the server and apply only when the request succeeds. No cash, prizes, or gambling features.