Han: 3 han (2 han if open)
Open or closed
Difficulty: ★★★★☆
Requirement:
- Every group and pair contains at least one terminal (1 or 9)
- No honor tiles
Meaning:
A stricter version of Chanta. Higher scoring but more difficult to build.
Good with:
Toitoi / Sanshoku / Dora
Cannot combine:
Chanta / Honroutou