Curriculum · 21 / 50
Advanced yaku: recap
Review triplet yaku, flushes, situational wins, and the complete catalog of yakuman used under Tenhou rules in this advanced exam.
The principle
Toitoi, sanankou, sanshoku doukou, sankantsu, and shousangen reward triplets and quads. The key detail is that a triplet completed by ron is open for sanankou.
Rule and example
Honitsu mixes one suit with honors, chinitsu keeps one suit without honors, and honroutou contains only terminals and honors. Their visibility in the discards must also guide defense.
What changes
Ippatsu, double riichi, rinshan, chankan, haitei, and houtei depend on the exact flow of the hand. Tenhou rules notably exclude combining ippatsu with rinshan.
Mistake to avoid
The twelve yakuman have fixed values. Special thirteen-sided and nine-sided waits remain single yakuman under Tenhou, but genuinely different yakuman can stack.
Rules references
- Tenhou rulesReference profile used for game mechanics and scoring.
- WRC Rules 2025International rules compared whenever their options differ from Tenhou.