Sankantsu

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Sankantsu
Type Yaku
Kanji 三槓子
English Three kans
Value 2 han
Speed Very slow
Difficulty Very hard

Sankantsu (三槓子) is a standard yaku. This yaku requires kan to be called three times by one player. Due to this requirement, this yaku is actually the most difficult of the regular yaku. Within Tenhou.net, the yaku actually occurs less frequently than some yakuman.

Tile pattern

Waiting for:

Formation

Of all the standard yaku, sankantsu is the most difficult and least frequent. Its rate of occurrence is comparable to that of some yakuman.

As the name implies, the hand must call kan three times before the end of the hand. Naturally, the hand must also be tenpai to even be able to score.

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
SNK

No sequential based yaku can combine with sankansu. This rules out pinfu, iipeikou, ittsu, and sanshoku doujun. Chiitoitsu is incompatible due to its usage of pairs.

Value

This yaku is set at 2 han. However, the number of kans significantly increases the hand's value. Even with the minimum 3 kan of simples, they generate a fu count of 8 fu each, for a total of 24 additional fu to the base 20. So, at a minimum, this yaku is valued at 2 han and 50 fu.

External links

Sankantsu in Japanese Wikipedia