Sanshoku doukou

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Sanshoku doukou
Type Yaku
Kanji 三色同刻
English Three colored triplets
Value 2 han
Speed Very slow
Difficulty Very hard
Example(s)
More examples

Sanshoku doukou 「三色同刻」 is a standard yaku. This yaku involves koutsu (triplets) of the same numbered tiles across the three main suits.

Tile pattern cases

For this sanshoku doukou there are cases where the yaku is guaranteed and cases where it is not.

Case where sanshoku doukou is guaranteed

Tile-3m.pngTile-3m.pngTile-3m.pngTile-3s.pngTile-3s.pngTile-3s.pngTile-6s.pngTile-7s.pngTile-3z.pngTile-3z.png Tile-3p.pngTile-3p-e.pngTile-3p.png Agari: Tile-5s.png or Tile-8s.png

Here, all three koutsu of number three are already on the hand, and sanshoku doukou is guaranteed for both tiles waited on.

Case where sanshoku doukou is not guaranteed

Tile-3m.pngTile-3m.pngTile-3m.pngTile-3s.pngTile-3s.pngTile-4s.pngTile-5s.pngTile-6s.pngTile-6s.pngTile-6s.png Tile-3p.pngTile-3p-e.pngTile-3p.png Agari: Tile-3s.png

Note: This hand is also waiting for Tile-6s.png, but that would not give sanshoku doukou.

Tile-3m.pngTile-3m.pngTile-3m.pngTile-3s.pngTile-3s.pngTile-6s.pngTile-7s.pngTile-8s.pngTile-3z.pngTile-3z.png Tile-3p.pngTile-3p-e.pngTile-3p.png Agari: Tile-3s.png

Note: This hand is also waiting for Tile-3z.png, but that would not give sanshoku doukou.

Formation

This yaku is actually a fairly difficult yaku to complete. For every number across the three different suits, there are only 12 tiles. A sanshoku douko hand has to have 9 of the 12 tiles of one number. The 3 tiles of that number not in the hand has to be one of each suit, which yields pretty bad odds.

Compatability

^ Ippatsu requires riichi to be of any use.

RCH DRI IPP SMO TAN PFU IPK ITT YAK SDJ SDO TOI SNA SNK CHA JUN RPK SSG HRO HON CHN CHI RIN HAI HOU CHK
SDO 13 green check.png 13 green check.png 13 green check.png 13 green check.png 13 green check.png 13 red x.png 13 red x.png 13 red x.png 13 green check.png 13 red x.png 13 green check.png 13 green check.png 13 green check.png 13 green check.png 13 green check.png 13 red x.png 13 red x.png 13 green check.png 13 red x.png 13 red x.png 13 red x.png 13 green check.png 13 green check.png 13 green check.png 13 green check.png

Sanshoku doukou is incompatible with any yaku requiring more than one sequence, namely pinfu, iipeikou, ittsuu, sanshoku doujun, and ryanpeikou. It cannot be combined with honitsu and chinitsu, which require tiles of a single suit. chiitoitsu requires seven pars, which precludes the triplets for sanshoku doukou. Finally, shousangen's two dragon triplets do not leave enough room for the three triplets of suited tiles required.

Value

Whether open or closed, this yaku remains at 2 han.

External links

Sanshoku doukou in Japanese Wikipedia