Chiniisou: Difference between revisions

'''Chiniisou''' {{kana|清一色}}, often called '''chinitsu''' {{kana|清一}}, is a [[yaku]] scored when the hand only has tiles of a single numbered suit. It is worth 6 han, but reduced to 5 if opened. It is sometimes called '''chinichi'''.  

Since only one suit can be used for this yaku, tiles of the two other suits will be discarded. As a consequence, a player aiming for a honitsu/chinitsu will often discard tiles of two suits. This is especially true when middle tiles and/or [[dora]] are discarded early on.

Chinitsu is notorious for developing complex [[Machi#Complex_patterns|wait patterns]]. Since all 13 tiles are of one suit, it is easy for groups to mix together, forming multi-sided waits.

As a standalone yaku, chinitsu is at least a [[mangan]] open and a [[haneman]] closed. An open chinitsu can easily become a haneman with a [[dora]] or another yaku.

Due to the relatively high value of this yaku, chinitsu may be involved in the formation of [[kazoe yakuman]], especially closed. A closed chinitsu, worth 6 han, is almost half the requirement of 13 han; other yaku and/or dora will need to provide the rest. A certain pattern of chinitsu hand can become a regular yakuman, [[churren poutou]].