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'''Ryuuiisou''' (緑一色) is one of the standard [[List_of_yaku#Yakuman|yakuman]] hands. This hand consists of any four melds and a pair that consists of only 2, 3, 4, 6, 8 of souzu and/or the green dragon tiles. Literally, this hand is composed of "all green" painted tiles. This hand may be open or closed. | '''Ryuuiisou''' (緑一色) is one of the standard [[List_of_yaku#Yakuman|yakuman]] hands. This hand consists of any four melds and a pair that consists of only 2, 3, 4, 6, 8 of souzu and/or the green dragon tiles. Literally, this hand is composed of "all green" painted tiles. This hand may be open or closed. | ||
==Tile diagram== | ==Tile diagram== | ||
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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. | |||
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== | ==External links== | ||