Ryuuiisou: Difference between revisions

Ryuuiisou
Type	Yakuman
Kanji	緑一色
English	All green
Value	Yakuman
Speed	Very slow
Difficulty	Very hard

VisualWikitext

Latest revision as of 23:35, 23 August 2024

Ryuuiisou 「緑一色」, or "all green" in English, is a yakuman scored when the hand is composed entirely of the following tiles: 2, 3, 4, 6, 8 of souzu, and/or the green dragon tiles.

Tile diagram

Winning tile: or

Open

Winning tile: or

This example is only possible under the common ruling of optional hatsu.

Value

This hand is a yakuman hand which automatically awards 32000 points to a non-dealer winner, or 48000 points to a dealer winner.

Formation

This yakuman is literally all green, as all the tiles are composed of green tiles. No markings of other color are applied to these tiles, hence its designation as all green. With this yakuman, only six tile types are available:

With the usual four melds and a pair pattern, at least five out of the six tile types are needed to complete this yakuman. Because 2-3-4 can be used in sequences, this yakuman is easier than chinroutou (which requires all triplets). Because there are only six unique tile types, this yakuman is impossible to obtain in chiitoitsu form.

Furiten

Waiting for:

-

or

This hand may regularly be subject to furiten, especially around the range of 1, 2, 3, 4, and 5 sou. While it is necessary to discard 1 sou and 5 sou to build this yakuman, these discarded tiles may lead to a tenpai hand with furiten. That may be particularly true for above example.

Variation

Some rules require hatsu (green dragon) in the hand, among them JPML A. The more common rule allows, but does not require, hatsu within the hand.

External links

緑一色

Ryuuiisou in Japanese Wikipedia

【麻雀】武中進の緑一色【役満】 (YouTube)

Ryuuiisou at Nihon Pro Mahjong.

@@ Line 15: / Line 15: @@
 * [http://tenhou.net/0/?log=2014073011gm-0009-0000-3245cc77&tw=2&ts=2 Ryuuiisou] with [[suuankou tanki]]
 }}
-'''Ryuuiisou''' {{kana|緑一色}} is one of the standard [[List_of_yaku#Yakuman|yakuman]] hands. This hand consists of any four [[mentsu|tile groups]] and a [[jantou|pair]] that consists of only 2, 3, 4, 6, 8 of souzu and/or the [[hatsu|green dragon tiles]].  Literally, this hand is composed of "all green" painted tiles. This hand may be open or closed.
+'''Ryuuiisou''' {{kana|緑一色}}, or "all green" in English, is a [[yakuman]] scored when the hand is composed entirely of the following tiles: 2, 3, 4, 6, 8 of souzu, and/or the [[hatsu|green dragon tiles]].
 ==Tile diagram==
@@ Line 29: / Line 29: @@
 ==Formation==
-This yakuman is literally all green, as all the tiles are composed of green tiles.  No markings of other color are applied to these tiles, hence its designation as all green.  With this yakuman, only six tile types are available:
+This yakuman is literally all green, as all the tiles are composed of green tiles. No markings of other color are applied to these tiles, hence its designation as all green.  With this yakuman, only six tile types are available:
 * {{#mjt:23468s6z}}
-With the four melds and a pair pattern, at least, five out of the six tile types are needed to complete this yakuman.  It is possible to use all six tile types, when 2-3-4 were used as shuntsu.  Given six tile types to work with, it is impossible to form a [[chiitoitsu]] type pattern.  This aspect alone makes ryuuiisou a bit easier than [[chinroutou]], which is limited to the same number of tile types but not able to form shuntsu.
+With the usual four melds and a pair pattern, at least five out of the six tile types are needed to complete this yakuman. Because 2-3-4 can be used in sequences, this yakuman is easier than [[chinroutou]] (which requires all triplets). Because there are only six unique tile types, this yakuman is impossible to obtain in [[chiitoitsu]] form.
 ===Furiten===
+[[Image:Ryuuiisou tenpai.png|thumb|250px|right|[http://tenhou.net/0/?log=2015012507gm-0009-7447-af613d7b&tw=1&ts=6 Choice] between [[jigoku]] or furiten.]]
 :{{#mjt:2344466688s666z}} Waiting for: {{#mjt:1s}} - {{#mjt:4s}} or {{#mjt:8s}}
-This hand may regularly be subject to furiten, especially around the range of 1, 2, 3, 4, and 5 sou.  While it is necessary to discard 1 sou and 5 sou to build this yakuman, these discarded tiles may lead to a tenpai hand with furiten.  That may be particularly true for above example.
+This hand may regularly be subject to [[furiten]], especially around the range of 1, 2, 3, 4, and 5 sou. While it is necessary to discard 1 sou and 5 sou to build this yakuman, these discarded tiles may lead to a tenpai hand with furiten.  That may be particularly true for above example.
 === Variation ===
-Some rules require hatsu (green dragon) in the hand, among them JPML A. The [[Tenhou.net rules]] and the [[EMA rules]] allow ryuuiisou with and without hatsu. This is the more common rule.
+Some rules [[Yaku_variations#Ryuuiisou|require hatsu (green dragon)]] in the hand, among them [[JPML|JPML A]]. The more common rule allows, but does not require, hatsu within the hand.
-Even though all paint on the haku (white dragon, has no painting at all) is green, it doesn't count as a green tile.
 ==External links==
 {{jpwiki|緑一色}}
+{{Youtube
+| url         = https://www.youtube.com/watch?v=IeDZ-cV7vQU
+| linkname    = 【麻雀】武中進の緑一色【役満】
+| description = Ryuuiisou at [[Nihon Pro Mahjong]].
+}}
 [[Category: Yaku]]
 {{Navbox yaku}}