Riichi Mahjong Yaku
Mixed Triple Sequence
Also known as: Sanshoku Doujun · Sanshoku · 三色同順
The same numbered sequence appears once in each of the Man, Pin, and Sou suits.
Yaku value
Closed hand
2 Han
Open hand
1 Han
Requirements
Complete three sequences with identical numbers, one in every suit, such as 4-5-6 Man, Pin, and Sou.
Common scoring mistake
The groups must be sequences, not triplets. Opening the hand reduces the value from 2 Han to 1 Han.
Values follow common modern Riichi rules. Local and tournament rules may differ, especially for double Yakuman.