1 han · open or closed
Chankan
Robbing a kan. Ron on a tile another player adds to their pon to make a kan.
Closed1 hanOpen1 hanHow oftenVery rare
How Chankan works
When someone with an open pon adds the fourth tile to make a kan, and that tile is one you're waiting on, you can ron it.
Example hand
Hand
Ron
CalledChi
Chankan 11 han 30 fu · 1,000non-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
- A closed kan can't be robbed, except by a hand going for kokushi musou.
- Works even for an open hand with no other yaku.
Quick answers
How many han is Chankan?
Chankan is worth 1 han, open or closed.
Can Chankan be open?
Yes. Chankan counts even after you call chi, pon or kan.
How common is Chankan?
Very rare. Ron on a tile another player adds to their pon to make a kan.