Tsuuiisou: Difference between revisions

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→‎Development: shousuushii is more common
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* [[Daisangen]]
* [[Daisangen]]
* [[Suu ankou]]
* [[Suu ankou]]
* [[Shousuushi]]
* [[Shousuushii]]
* [[Daisuushi]]
* [[Daisuushii]]
* [[Suu kantsu]]
* [[Suu kantsu]]
|gameExample = * [http://tenhou.net/0/?log=2013122618gm-0041-0000-7d63acef&tw=3 Fast tsuuiisou]
|gameExample = * [http://tenhou.net/0/?log=2014100817gm-0089-0000-317bf793&tw=3 Tsuuiisou]
* [http://tenhou.net/0/?log=2012032214gm-0009-0000-cc8c2c61&tw=2&ts=12 Open tsuuiisou]
* [http://tenhou.net/0/?log=2014060308gm-00c1-0000-fa4afe6f&tw=3&ts=3 Closed tsuuiisou]
}}
}}
'''Tsuuiisou''' {{kana|字一色}} is a [[List of yaku#Yakuman|yakuman]] in which the hand consists entirely of honour tiles.
'''Tsuuiisou''' {{kana|字一色}} is a [[List of yaku#Yakuman|yakuman]] in which the hand consists entirely of [[Jihai|honor tiles]].


==Tile pattern==
==Tile pattern==
{{#mjt:1112227776644z}} Agari: {{#mjt:6z}} or {{#mjt:4z}}
{{#mjt:1112226644z}} {{#mjt:7'77z}} Agari: {{#mjt:6z}} or {{#mjt:4z}}


==Development==
== Development ==
For this yakuman, all [[kazehai]] (wind tiles) and [[sangenpai]] (dragon tiles) can be used. Given the nature of [[jihai]] (honor tiles), the different types cannot be mixed to form [[mentsu|tile groups]].  Therefore, they must be collected in the form of [[Mentsu#Koutsu|koutsu]] (triplets).  This yakuman is only reasonably achievable, when in possession of at least multiple [[toitsu]] (pairs) of the honor tiles.  Otherwise, players may have to resort towards yaku, like [[yakuhai]] or [[honitsu]] for attaining [[tenpai]].
For this yakuman, all [[kazehai]] (wind tiles) and [[sangenpai]] (dragon tiles) can be used. This gives seven tiles to choose from.


===Daichisei===
Honor tiles can only be formed as triplets or pairs. Therefore, this yakuman is only reasonable when in possession of multiple [[toitsu]] (pairs) of the honor tiles. Otherwise, you can go for yaku like [[yakuhai]] and [[honitsu]]. Regarding tile discards, any tile that is not an honor tile is deemed irrelevant for the yakuman, including [[dora]] tiles.  More often than not, players will call pon in order to claim and complete honor tile groups, until tenpai and eventually winning the hand (assuming to be the case).
 
== Daichiishin ==
{{#mjt:1122334455667z}}  Agari: {{#mjt:7z}}
{{#mjt:1122334455667z}}  Agari: {{#mjt:7z}}


A specific variant to tsuuiisou is possible and can be considered as a separate yakuman, '''daichiisei''' {{kana|大七星}}.  It is a variant of [[chiitoitsu]] (seven pairs). This variant uses two of the each honour tiles and is sometimes called a "Dai Chii Sei" or Big Seven Stars. There are exactly seven types of honor tiles, which makes this difficult pattern possible.  As a consequence, this variation remains as a closed only hand. This is optionally worth [[optional yaku|double yakuman]].
In addition to triplets, tsuuiisou can be achieved in the form of [[chiitoitsu]]. This may be considered as a [[Optional yaku|separate yakuman]], '''daichiishin''' {{kana|大七星}}, meaning "Big Seven Stars". There are exactly seven types of honor tile, and you cannot call pon to complete the hand, so this is much harder than regular tsuiisou. This is [[optional yaku|optionally]] worth [[Multiple yakuman|double yakuman]].


==External links==
==External links==
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