2 han · 1 han open
Ittsu
Pure straight. 1-2-3, 4-5-6 and 7-8-9 in one suit.
Closed2 hanOpen1 hanHow oftenUncommon
How Ittsu works
Three sequences that together run 1 through 9 in a single suit.
Example hand
Hand
Ron
Ittsu 22 han 40 fu · 2,600non-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
- Worth 1 han less (1 han) once you call anything.
Quick answers
How many han is Ittsu?
Ittsu is worth 2 han closed and 1 han if you have called tiles.
Can Ittsu be open?
Yes. Ittsu counts even after you call chi, pon or kan, but it drops to 1 han.
How common is Ittsu?
Uncommon. 1-2-3, 4-5-6 and 7-8-9 in one suit.