Haitei raoyue and houtei raoyui: Difference between revisions

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Haitei raoyue and houtei raoyui (view source)

Revision as of 19:14, 30 January 2015

782 bytes removed ,  30 January 2015
→‎Compatability: Clean up compatibility. The discussion about the legality of calling with the last tiles is out of place; I will put it elsewhere.
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m (→‎Haiteihai: Update main article link.)
(→‎Compatability: Clean up compatibility. The discussion about the legality of calling with the last tiles is out of place; I will put it elsewhere.)
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Both yaku are mutually exclusive, as it is impossible to win by draw and by discard at the same time.  Houtei cannot combine with [[mentsumo]] simply because it is only winnable via discards.  As for [[ippatsu]], it is impossible for the riichi caller to have the last discard within one turn.
Haitei and houtei are mutually exclusive with each other, with [[chankan]], and with [[rinshan kaihou]], because each of them requires the winning tile to come from a different location (the live wall, a discard, a [[shouminkan]], and the dead wall, respectively).  Houtei cannot combine with [[mentsumo]] because it is only winnable via discards.


=== With rinshan kaihou ===
As for [[ippatsu]], it is impossible for the player calling riichi to have the last discard occur within one turn, because there must be at least 4 tiles left in the live wall when calling riichi. If an intervening call was made, which might mean that the player calling riichi would not get another draw, that call alone would disqualify an ippatsu. It is possible, however, for a player to call riichi with exactly four tiles left in the live wall and subsequently get both ippatsu and haitei on their next draw.
 
Neither yaku cannot be combined with [[rinshan kaihou]], which requires an extra tile draw from from dead wall after a kan.
 
When winning on the replacement tile after a kan, haitei is applied to a live wall draw but not on a tile from the dead wall.  With regards to houtei, the last discarded tile cannot be called to complete [[mentsu|melds]] or be used to form [[kan|daiminkan]] (open kans).
 
Furthermore, per rule, the dead wall must be maintained at 14 tiles.  A kan call at the very last tile draw or discard would deny the replenishment of a tile from the regular wall to the dead wall. In other words, forming a kantsu with the very last tile or discard, followed by drawing the rinshanpai, would deplete the dead wall to 13 tiles.
 
A potential scenario may arise when the second to last tile draw or discard may be legally used to call kan.  In turn, that would leave the very last tile from the regular wall to be shifted into the dead wall as the replacement tile. If rinshan kaihou does occur, the ''rinshanpai'' could be viewed as the last draw.  However, the last draw must come from the regular wall in order to count as haitei. If a tile is discarded instead of calling tsumo win here, that will be the last discard of the game.  This last discard may suffice for houtei, to another player, of course.


== Setting up haitei raoyue or houtei raoyui==
== Setting up haitei raoyue or houtei raoyui==
Retrieved from "https://riichi.wiki/Special:MobileDiff/13605"

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