Riichi Mahjong Yaku
Half Flush
Also known as: Honitsu · Honiso · 混一色
A hand made from one numbered suit together with honor tiles.
Yaku value
Closed hand
3 Han
Open hand
2 Han
Requirements
Use tiles from only Man, Pin, or Sou, plus any winds or dragons. At least one honor tile must be present.
Common scoring mistake
Using a second numbered suit breaks the Yaku. If there are no honors, the hand is Full Flush instead.
Values follow common modern Riichi rules. Local and tournament rules may differ, especially for double Yakuman.