Riichi Mahjong Yaku
Under the Sea
Also known as: Haitei Raoyue · Haitei · 海底摸月
A Tsumo win on the final drawable tile of the live wall.
Yaku value
Closed hand
1 Han
Open hand
1 Han
Requirements
Draw and win on the last tile available from the live wall. The hand may be open or closed.
Common scoring mistake
This is specifically a self-draw. Winning on the final discard is Under the River instead.
Values follow common modern Riichi rules. Local and tournament rules may differ, especially for double Yakuman.