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Haitei raoyue and houtei raoyui: Difference between revisions
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== Haiteihai and houteihai == | == Haiteihai and houteihai == | ||
The '''haiteihai''' {{kana|海底牌}} is the very last tile that can be drawn from the regular wall. It is always the 15th tile from the end, counting the 14 tiles of the [[dead wall]]. | The '''haiteihai''' {{kana|海底牌}} is the very last tile that can be drawn from the regular wall. It is always the 15th tile from the end, counting the 14 tiles of the [[dead wall]]. It is typically on the bottom of its two-tile stack, but [[kan]] calls will shift the designation of the last tile. When kan is called, the current haiteihai is shifted to the dead wall (to accommodate for the [[rinshan]] draw). In some groups, the tile may physically be moved from the live wall into the dead wall to make it clearer when the hand ends, but this generally not done in professional play. | ||
Likewise, the very last discard is called '''houteihai''' {{kana|河底牌}}. The houteihai can never be called for [[chii]], [[pon]], or [[kan]]. | Likewise, the very last discard is called '''houteihai''' {{kana|河底牌}}. The houteihai can never be called for [[chii]], [[pon]], or [[kan]]. | ||
If a player calls a kan when there is only one tile left in the live wall, haitei is not scored. Despite being the "last draw" of the game, kan draws from the dead wall | If a player calls a kan when there is only one tile left in the live wall, haitei is not scored. Despite being the "last draw" of the game, kan draws from the dead wall, but haitei requires a draw from the live wall. The final discarded tile after a kan is still valid for houtei. | ||
A player cannot call a kan after drawing the last tile (either normally or as a result of a kan), because they would need to draw a rinshanpai and doing so would bring the dead wall down to 13 tiles. | A player cannot call a kan after drawing the last tile (either normally or as a result of a kan), because they would need to draw a rinshanpai and doing so would bring the dead wall down to 13 tiles. | ||
== Development == | |||
[[image:Haitei chance.png|250px|thumb|right|[http://tenhou.net/0/?log=2013122508gm-0009-7447-3e04d9d5&tw=3 Example tenpai], with one tile left to draw.]] | |||
Like any hand, both haitei and houtei requires tenpai at the very last draw/discard to be scored. At this point, any hand in tenpai can win, even an otherwise "yakuless" open hand. | |||
== Compatibility == | == Compatibility == | ||
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As for [[ippatsu]], it is impossible to call riichi unless there are at least 4 tiles left in the live wall. If riichi is declared with 4 tiles remaining, and no [[tile calls]] are made, then the riichi declarer will draw the haiteihai on the ippatsu draw. This allows ippatsu to be scored with haitei, but not houtei, since drawing the haiteihai means it is impossible to score houtei. While tile calls may shift the draw order, any tile call will interrupt ippatsu. | As for [[ippatsu]], it is impossible to call riichi unless there are at least 4 tiles left in the live wall. If riichi is declared with 4 tiles remaining, and no [[tile calls]] are made, then the riichi declarer will draw the haiteihai on the ippatsu draw. This allows ippatsu to be scored with haitei, but not houtei, since drawing the haiteihai means it is impossible to score houtei. While tile calls may shift the draw order, any tile call will interrupt ippatsu. | ||
== Meaning == | == Meaning == | ||