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* [http://tenhou.net/0/?log=2014012816gm-0009-7447-3851d1db&tw=1&ts=5 With] [[sanshoku doukou]] | * [http://tenhou.net/0/?log=2014012816gm-0009-7447-3851d1db&tw=1&ts=5 With] [[sanshoku doukou]] | ||
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'''Honroutou''' | '''Honroutou''' {{kana|混老頭}} is a standard yaku, focusing on just the [[jihai|honors]] and [[routouhai|terminals]]. To score honroutou, the hand must contain only honors and terminals. If the hand is all honors or all terminals, then [[tsuuiisou]] or [[chinroutou]] will be scored instead. | ||
==Tile pattern== | ==Tile pattern== | ||
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==Formation== | ==Formation== | ||
This yaku requires [[routouhai|terminal]] and [[jihai|honor]] tiles only. While terminals may be used for [[shuntsu|sequences]], this yaku cannot form those sequences. Otherwise, this yaku would no longer be honroutou but rather [[chanta]]. | This yaku requires [[routouhai|terminal]] and [[jihai|honor]] tiles only. While terminals may be used for [[shuntsu|sequences]], this yaku cannot form those sequences. Otherwise, this yaku would no longer be honroutou but rather [[chanta]]. Naturally, a concentration of honor and terminal tiles are required to even consider this yaku. A majority of honroutou hands are open, especially when they only utilize pon to call tiles. | ||
=== | === Compatibility === | ||
{{main|Yaku | {{main|Yaku compatibility}} | ||
{{ | {{Yaku compatibility table|HRO}} | ||
| HRO | |||
Honroutou is not compatible with any yaku which require a sequence, which accounts for most of the incompatibilities (including [[chankan]], which must always win on a sequence wait). [[Tanyao]] is incompatible because it requires no terminals or honours, and honroutou requires only those tiles. [[Chantaiyao]] is incompatible because it is implied by honroutou. Finally, if [[honroutou]] is combined with [[junchan]], the entire hand must be terminals, which gives the [[chinroutou]] yakuman. | |||
==Value== | ==Value== | ||
It is impossible to score this yaku without at least either [[toitoi]] or [[chiitoitsu]]. So this yaku is, at minimum, worth 4 han. | |||
When factoring [[fu]], the combination of [[koutsu|ankou]] and [[koutsu|minkou]] (closed and open triplets) produces a fu count of higher than 10. The lowest possible fu is generated with 4 minkou, leading to [[tanki|hadaka tanki]] (lone pair wait). Adding the base 20 fu for any hand, this yaku is guaranteed greater than 30 fu; and with the rules of fu, that number is actually rounded up to at least 40 fu. Therefore, a honroutou composed of ankou and minkou is at minimum a [[mangan]]. | When factoring [[fu]], the combination of [[koutsu|ankou]] and [[koutsu|minkou]] (closed and open triplets) produces a fu count of higher than 10. The lowest possible fu is generated with 4 minkou, leading to [[tanki|hadaka tanki]] (lone pair wait). Adding the base 20 fu for any hand, this yaku is guaranteed greater than 30 fu; and with the rules of fu, that number is actually rounded up to at least 40 fu. Therefore, a honroutou composed of ankou and minkou is at minimum a [[mangan]]. |
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