Shousangen: Difference between revisions

Shousangen
Type	Yaku
Kanji	小三元
English	Small three dragons
Value	2 han (Consider as 4 han)
Speed	Medium
Difficulty	Medium

VisualWikitext

Latest revision as of 23:56, 11 June 2024

Shousangen 「小三元」 is a standard yaku, reliant on all three sangenpai (dragon tiles). The hand is composed of two koutsu (triplet) and a jantou (pair) of the third type.

Tile pattern

Yasume: Takame:

This hand is a shousangen while winning on the cheaper winning tile. If it wins on the other tile, , it would give a daisangen yakuman instead.

Development

The hand requires two out of the four tile groups to be composed of dragon triplets, while the pair is always of the third type. That leaves two tile groups to be based off of any tile composition. Often enough but not always, such a hand may be tenpai for daisangen.

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
SSG

Shousangen requires two of the four tile groups to be dragon triplets, leaving no room for ittsu, ryanpeikou, sanshoku, and sanshoku doukou (which all require three groups). Chiitoitsu forbids mentsu and is similarly incompatible. Naturally, pinfu, tanyao, junchan, and chinitsu are incompatible because of the dragon tiles.

Every shousangen hand always scores at least two yakuhai from the two dragon triplets. Normally, when a yaku is guaranteed by another yaku, the guaranteed yaku is not scored. However, because shousangen does not guarantee any particular yakuhai (i.e., it does not guarantee "haku", "hatsu", or "chun"), the two yakuhai are scored.

Value

Shousangen is usually denoted as a 2 han yaku. However, because it is impossible to score shousangen without at least two yakuhai, shousangen is effectively worth 4 han.

The two yakuhai triplets are worth a minimum of 4 fu each, and the yakuhai pair is worth 2 fu. Therefore, the lowest scoring shousangen is 4 han 30 fu, barely shy of mangan. The requirements to reach 4 han 30 fu, assuming no additional yaku, are:

The hand must be won by ron, as a tsumo would score 2 fu.
The wait must be either a ryanmen or shanpon wait, as any other wait would score 2 fu.
Both of the other groups must be shuntsu of different suits. If either was a koutsu, it would score at least 2 fu.
Both of the yakuhai groups must be open, as they would score additional fu if closed. Note that as this is for the purposes of counting fu, if a group is completed by ron, it counts as being open.
Neither of the yakuhai groups may be kantsu, as they would score additional fu as kantsu.

Two examples scoring exactly 4 han 30 fu:

Ron:

External links

小三元

Shousangen in Japanese Wikipedia

@@ Line 6: / Line 6: @@
 |yakuSpeed   = Medium
 |difficulty  = Medium
-|yakuCombine = * [[Riichi]]
+|gameExample =
-* [[Ippatsu]]
-* [[Tsumo]]
-* [[Yakuhai]] x 2
-* [[Toi toi]]
-* [[Honitsu]]
-* [[Chanta]]
-* [[San ankou]]
-* [[Honroutou]]
-|gameExample = [[Shousangen/Replays|Replay list]]
 }}
-'''Shousangen''' {{kana|小三元}} is a standard [[List of yaku|yaku]], reliant on all three [[sangenpai]].  The hand is composed of two [[Mentsu#Koutsu|koutsu]] (triplet) and a [[jantou]] (pair) of the third type.
+'''Shousangen''' {{kana|小三元}} is a standard [[List of yaku|yaku]], reliant on all three [[sangenpai]] (dragon tiles). The hand is composed of two [[Mentsu#Koutsu|koutsu]] (triplet) and a [[jantou]] (pair) of the third type.
 ==Tile pattern==
@@ Line 23: / Line 14: @@
 {{#mjt:22m340p77666z}} {{#mjt:55'5z}} Yasume: {{#mjt:2m}}  Takame: {{#mjt:7z}}
-This hand is a shousangen while winning on the [[yasume|cheaper winning tile]].  If it wins on the other tile, {{#mjt:7z}}, it would give a [[daisangen]] yakuman instead.
+This hand is a shousangen while winning on the [[yasume|cheaper winning tile]]. If it wins on the other tile, {{#mjt:7z}}, it would give a [[daisangen]] yakuman instead.
 ==Development==
-The hand requires two out of the four tile groups to be composed of dragon triplets, while the pair is always of the third type.  That leaves two tile groups to be based off of any tile composition.  Often enough but not always, such a hand may be tenpai for daisangen.
+The hand requires two out of the four tile groups to be composed of dragon triplets, while the pair is always of the third type. That leaves two tile groups to be based off of any tile composition. Often enough but not always, such a hand may be tenpai for daisangen.
-=== Compatability ===
+=== Compatibility ===
-{{main|Yaku compatability}}
+{{main|Yaku compatibility}}
 {{Yaku compatibility table|SSG}}
-Shousangen requires [[yakuhai]], from the two groups of dragon tiles. Note that while normally a yaku is not counted if it is guaranteed by another yaku in the hand, shousangen does not guarantee a particular yakuhai and so it is counted separately.  Out of the regular four tile groups for a hand, two are dedicated for dragon tiles.  So, this yaku has no room for the likes of [[ittsu]], [[ryanpeikou]], [[sanshoku]], and [[sanshoku doukou]], as well as [[chiitoitsu]] because the later does not allow any mentsu.  Each of those four yaku require at least three tile groups for their specific requirements.  Naturally, [[pinfu]], [[tanyao]], [[junchan]], and [[chinitsu]] are incompatible because of the dragon tiles.
+Shousangen requires two of the four tile groups to be dragon triplets, leaving no room for [[ittsu]], [[ryanpeikou]], [[sanshoku]], and [[sanshoku doukou]] (which all require three groups). [[Chiitoitsu]] forbids mentsu and is similarly incompatible. Naturally, [[pinfu]], [[tanyao]], [[junchan]], and [[chinitsu]] are incompatible because of the dragon tiles.
+Every shousangen hand always scores at least two yakuhai from the two dragon triplets. Normally, when a yaku is guaranteed by another yaku, the guaranteed yaku is not scored. However, because shousangen does not guarantee any particular yakuhai (i.e., it does not guarantee "haku", "hatsu", or "chun"), the two yakuhai are scored.
 ==Value==
-In general, this yaku is noted as 2 han.  However, it is impossible for this yaku to score without two instances of [[yakuhai]] from the two [[Koutsu|groups]] of sangenpai.  In combination, this yaku will never produce a hand worth less than 4 han.  Even with both sangenpai groups called open, that is a combination of 8 fu; and then there's 2 more fu from the sangenpai pair of the third type. The hand will almost always score at least [[mangan]].
+Shousangen is usually denoted as a 2 han yaku. However, because it is impossible to score shousangen without at least two yakuhai, shousangen is effectively worth 4 han.
-The lowest scoring shousangen is valued at 4 han 30 fu.  The requirements to do so, assuming no additional yaku, are:
+The two yakuhai triplets are worth a minimum of 4 fu each, and the yakuhai pair is worth 2 fu. Therefore, the lowest scoring shousangen is 4 han 30 fu, barely shy of [[mangan]]. The requirements to reach 4 han 30 fu, assuming no additional yaku, are:
 * The hand must be won by ron, as a tsumo would score 2 fu.
 * The wait must be either a [[ryanmen]] or [[shanpon]] wait, as any other wait would score 2 fu.
@@ Line 45: / Line 38: @@
 * Neither of the yakuhai groups may be [[kantsu]], as they would score additional fu as kantsu.
-Two examples scoring exactly 4 han 30 fu on a ron:
+Two examples scoring exactly 4 han 30 fu:
-{{#mjt:234p34s66z}} {{#mjt:555'z}} {{#mjt:7'77z}} Agari: {{#mjt:5s}}
+{{#mjt:234p34s66z}} {{#mjt:555'z}} {{#mjt:7'77z}} Ron: {{#mjt:5s}}
-{{#mjt:567m123s6677z}} {{#mjt:55'5z}} Agari: {{#mjt:6z}}
+{{#mjt:567m123s6677z}} {{#mjt:55'5z}} Ron: {{#mjt:6z}}
 ==External links==