Chinroutou

Chinroutou

Type	Yakuman
Kanji	清老頭
English	All terminals
Value	Yakuman
Speed	Very slow
Difficulty	Very hard

Chinroutou 「清老頭」 is a yakuman scored when every tile is a terminal (1 or 9). In other words, no simples (2-8) or honors are allowed. For short, it can be referred to as chinro.

Tile pattern

Agari: or

Formation

Possible chinroutou threat after two calls and a low terminal count among discards.

For this yakuman, there are only six types of terminals available: two from each of the numbered suit (1 and 9). A standard winning hand is 4 melds and a pair, five out of the six types of terminals are needed to build the hand.

Since there are only six tile types available for this hand, it is impossible to form a chiitoitsu variation.

Viability

Aside from needing five out of the six terminal types, every tile group must be triplets (or kans). So, any attempt at this yakuman requires the proper number of terminals as well as the ability to collect triplets. More often than not, players must make tile calls in order to do so. Only a rare number of times can this yakuman be completed while closed. On the other hand, the yakuman is rendered impossible if enough terminals are discarded or made unavailable.

External links

• 清老頭

Chinroutou in Japanese Wikipedia

• 【麻雀】望月雅継の清老頭！！ (YouTube)

Tournament Chinroutou