Tsuuiisou

Tsuuiisou

Type	Yakuman
Kanji	字一色
English	All honors
Value	Yakuman
Speed	Very slow
Difficulty	Very hard

Tsuuiisou (字一色) is a yakuman in which the hand consists entirely of honour tiles.

Tile pattern

Agari: or

Tsuuiisou is also possible as a variant of chii toitsu (seven pairs). This variant uses two of the each honour tiles.

Agari:

Formulation

For this yakuman, all kazehai (wind tiles) and sangenpai (dragon tiles) can be used. Given the nature of jihai (honor tiles), they different types cannot be mixed into a meld. Therefore, they must be collected in the form of koutsu (triplets). This yakuman is only reasonably achievable, when in possession of at least multiple toitsu (pairs) of the honor tiles.