Yakuman · Yakuman
Ryuuiisou
All green. Only the all-green tiles: 2, 3, 4, 6, 8 sou and green dragon.
Pays32,000dealer 48,000Open handAllowedHow oftenVery rare
How Ryuuiisou works
Every tile is 2, 3, 4, 6 or 8 of sou (bamboo), or the green dragon. Those are the tiles drawn with no red ink.
Example hand
Hand












Ron
Ryuuiisou yakumanYakuman · 32,000non-dealer ron
Scored by the same engine that runs the game: seat South, round East, no dora. Try your own in the hand calculator.
Good to know
- The green dragon isn't required in these rules.
Quick answers
How much is Ryuuiisou worth?
Ryuuiisou is a yakuman. It pays 32,000 points to a non-dealer and 48,000 to the dealer, before honba.
Can Ryuuiisou be open?
Yes. Ryuuiisou counts even after you call chi, pon or kan.
How common is Ryuuiisou?
Very rare. Only the all-green tiles: 2, 3, 4, 6, 8 sou and green dragon.