Han: 1 han
Open or closed
Difficulty: ★★★★☆
Requirement:
- Win on the tile an opponent uses to promote a Kan
- Cannot rob a concealed Kan
Meaning:
A rare interruption win when someone tries to upgrade Pon → Kan.
Good with:
Any hand needing that winning tile
Cannot combine:
Kokushi Musou (cannot rob concealed Kan)