Sanankou: Difference between revisions

Sanankou
Type	Yaku
Kanji	三暗刻
English	Three concealed triplets
Value	2 han
Speed	Medium
Difficulty	Medium

VisualWikitext

Latest revision as of 20:17, 19 August 2024

Sanankou 「三暗刻」 is a standard yaku, obtained when you have three concealed triplets (ankou). A 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 discard (ron), as the triplet would not be "concealed". However, the third triplet may be completed by tsumo. 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

1. Case where the yaku is guaranteed:

Agari:

2. Case where the hand must be won by tsumo:

Tsumo:

or

3. Case where the hand is won by discard.

Ron:

or

Note: A tsumo results in the suuankou yakuman.

Formation

This yaku requires three closed triplets, as it is defined as such. This leaves room for one tile call, which can be of any tile group.

Suuankou tenpai

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

Main article: Yaku compatibility

^ 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
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.

A natural combination involves toitoi. With one tile call, the hand needs to win by tsumo; otherwise by ron, only toitoi is counted. This premise is a similar case involving suuankou, which counts as yakuman via tsumo, or sanankou if ron.

External links

三暗刻

Sanankou in Japanese Wikipedia

@@ Line 19: / Line 19: @@
 '''Sanankou''' {{kana|三暗刻}} is a standard yaku, obtained when you have 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]]. 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.
+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]]. 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==
@@ Line 43: / Line 43: @@
 {{Yaku compatibility table|SNA}}
-Sanankou is incompatible with any yaku requiring more than one sequence, namely [[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]], and [[ryanpeikou]]. It is also incompatible with [[chiitoitsu]], which requires no [[mentsu]] at all.
 A natural combination involves [[toitoi]]. With one tile call, the hand needs to win by tsumo; otherwise by ron, only toitoi is counted. This premise is a similar case involving suuankou, which counts as yakuman via tsumo, or sanankou if ron.