What is Ippatsu (イッパツ)?
A bonus han for winning within one go-around of declaring riichi.
Han and calls
1 han（Closed only）
How it is formed
- Win before your next draw comes around after declaring riichi.
- If anyone calls a tile in the meantime, the ippatsu is cancelled.
- It requires riichi, so it never appears on an open hand.
Example hand
Winning with this shape gives the following.
- Yaku scored：Pinfu・Riichi・Ippatsu・Menzen tsumo
- Fu：20 fu／4 han
- Points for this example：7,800 points（Tsumo）
This one depends on the situation at the table, so there is no board example.
Yaku it combines with
Questions
How many han is Ippatsu?
1 han with a closed hand. Ippatsu does not count once you call.
Does Ippatsu count on an open hand?
No. It only counts on a closed hand.
Does a call cancel ippatsu?
Yes. As soon as anyone calls pon, chi or kan after your riichi, the ippatsu is gone.
Now put it to work
Last updated 2026-09-14 · Run by Qdan, Inc.