Riichi Mahjong Yaku
Menzen Tsumo
Also known as: Fully Concealed Self-Draw · Menzenchin Tsumohou · 門前清自摸和
A self-drawn win with a hand that has remained closed.
Yaku value
Closed hand
1 Han
Open hand
Closed only
Requirements
Complete the hand by drawing the winning tile yourself without having made an open Chi, Pon, or Kan. Concealed Kans preserve the closed status.
Common scoring mistake
Winning by Ron does not qualify. A concealed hand alone is not enough; the winning tile must be self-drawn.
Values follow common modern Riichi rules. Local and tournament rules may differ, especially for double Yakuman.