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Sanankou: Difference between revisions
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'''Sanankou''' {{kana|三暗刻}} is a yaku obtained when the hand has three concealed triplets ([[ankou]]). A [[Kan#Ankan|concealed kan]] counts as a concealed triplet. It can be completed with an open or closed hand. | '''Sanankou''' {{kana|三暗刻}} is a yaku obtained when the hand has three concealed triplets ([[ankou]]). A [[Kan#Ankan|concealed kan]] counts as a concealed triplet. It can be completed with an open or closed hand. | ||
The third triplet may not be completed off another player's [[ron|discard]] ([[ron]]), as the triplet would not be "concealed". However, the third triplet may be completed by [[tsumo]]. | The third triplet may not be completed off another player's [[ron|discard]] ([[ron]]), as the triplet would not be "concealed". However, the third triplet may be completed by [[tsumo]]. Note that sanankou and the related [[suuankou]] are the only two yaku that care whether the ''tile group'' is closed; all other yaku only check if ''the hand'' itself is closed. | ||
==Tile pattern cases== | ==Tile pattern cases== | ||
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==Formation== | ==Formation== | ||
This yaku requires three closed [[Mentsu#Koutsu|triplets]], | This yaku requires three closed [[Mentsu#Koutsu|triplets]], leaving room for one tile group of any type. | ||
=== Suuankou tenpai === | === Suuankou tenpai === | ||
A closed tenpai hand with both sanankou and [[toitoi]] is tenpai for [[suuankou]]. | A closed tenpai hand with both sanankou and [[toitoi]] is tenpai for [[suuankou]]. When this hand wins by discard, then the hand is not counted as suuankou. Instead, it is the combination of sanankou and toitoi. The fourth triplet completed by the discarded tile counts as an "open triplet", rather than a fourth closed one. | ||
== Compatibility == | == Compatibility == | ||
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{{Yaku compatibility table|SNA}} | {{Yaku compatibility table|SNA}} | ||
Sanankou is incompatible with any yaku requiring more than one sequence, those being [[pinfu]], [[iipeikou]], [[ittsu]], [[sanshoku]], and [[ryanpeikou]]. It is also incompatible with [[chiitoitsu]], which requires no [[mentsu]] at all. | Sanankou is incompatible with any yaku requiring more than one sequence, those being [[pinfu]], [[iipeikou]], [[ittsu]], [[sanshoku doujun]], and [[ryanpeikou]]. It is also incompatible with [[chiitoitsu]], which requires no [[mentsu]] at all. | ||
A natural combination involves [[toitoi]]. | A natural combination involves [[toitoi]]. | ||
* An "all triplet" hand with 1 open group scores sanankou + toitoi if a triplet is completed by tsumo, or if all triplets are complete at tenpai. If a triplet is completed by ron it scores only toitoi. | |||
* A closed "all triplet" hand scores [[suuankou]] if a triplet is completed by tsumo, or if all triplets are complete at tenpai. If a triplet is completed by ron it scores sananoku + toitoi. | |||
==External links== | ==External links== | ||