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Yaku variations: Difference between revisions
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Different yaku may be subject to [[rule variations]]. Some are simply not considered standard. | Different yaku may be subject to [[rule variations]]. Some are simply not considered standard. | ||
==Daburu riichi== | ==Daburu riichi== | ||
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* Ari – Score daburu riichi as 2 han instead of 1 han. | * Ari – Score daburu riichi as 2 han instead of 1 han. | ||
* Nashi – Always score 1 han per riichi declaration. | * Nashi – Always score 1 han per riichi declaration. | ||
==Haitei/houtei== | ==Haitei/houtei== | ||
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* Ari – Allow this combination. I consider this a bug in the 2012 EMA RCR. | * Ari – Allow this combination. I consider this a bug in the 2012 EMA RCR. | ||
* Nashi – Do not allow this combination. This is Japanese default. | * Nashi – Do not allow this combination. This is Japanese default. | ||
==Ippatsu== | |||
Score an additional han for winning a [[riichi]] declaration within the next go-around. | |||
* Ari – Score ippatsu as an extra 1-han yaku. | |||
* Nashi – Don't score ippatsu. | |||
== Kokushi and chankan == | == Kokushi and chankan == | ||
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* Nashi - Disallowed | * Nashi - Disallowed | ||
== | ==Open riichi== | ||
Allow players to declare open riichi instead of a normal riichi. Open riichi is worth 2 han instead of the normal 1 han. The declarer must reveal his hand at the same time as he pays the bet of 1,000 points. | |||
* | * Ari – Allow open riichi along with normal riichi. | ||
* Nashi – | * Nashi – Don't allow open riichi. | ||
Sometimes, directly playing into an open riichi (ron) is penalized by yakuman value. | |||
==Optional yaku== | |||
{{main|Optional yaku}} | |||
The main [[list of yaku]] does not include various other possible tile combinations, as they are not accepted as "standard yaku". With this, house rules may include additional yaku to the list, if desired. | |||
==Daisharin== | ===Daisharin=== | ||
Daisharin is an optional yaku. This involves pairs of the simples of the suit, [[pinzu]]. Sometimes it is regarded as a [[yakuman]]. Otherwise, the hand is counted normally with its yaku counterparts. The hand is at least 11 han with a combined [[chinitsu]], [[ryanpeikou]], and [[pinfu]]. | Daisharin is an optional yaku. This involves pairs of the simples of the suit, [[pinzu]]. Sometimes it is regarded as a [[yakuman]]. Otherwise, the hand is counted normally with its yaku counterparts. The hand is at least 11 han with a combined [[chinitsu]], [[ryanpeikou]], and [[pinfu]]. | ||
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For souzu and manzu, the hands are labeled as daichikurin and daisuurin. | For souzu and manzu, the hands are labeled as daichikurin and daisuurin. | ||
==Paarenchan== | ===Paarenchan=== | ||
Score the eighth consecutive win of the same dealer as a yakuman. | Score the eighth consecutive win of the same dealer as a yakuman. | ||
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* Ari - Yakuman scored. | * Ari - Yakuman scored. | ||
* Nashi - Eighth hand scored normally. | * Nashi - Eighth hand scored normally. | ||
===Renhou=== | |||
This is a yaku for winning on a discard before the winner's first turn in an uninterrupted go-around. | |||
* YMan – Yakuman: Score this as a yakuman. No other yaku is necessary. | |||
* M – Mangan: Score this as a mangan. No other yaku is necessary. | |||
* Yaku – Renhou functions as a regular yaku, with an assigned han value. As a regular yaku, it is capable of combining with other yaku. | |||
* Nashi – Renhou is not a yaku. The hand is scored normally, there must be at least one other yaku present for a valid win. | |||
==Nagashi mangan== | |||
Score a mangan upon exhaustive draw for having discarding only yaochuuhai during the entire hand, with none of the yaochuuhai having been called by other players, and without having called any tiles oneself. If this is allowed, there are additional rules decisions necessary: Does it count as a win, or merely as replacement of the noten penalty? Are concealed kantsu allowed? | |||
* Ari – Score nagashi mangan, but I don't know the details. | |||
* Ari B – Score nagashi mangan as a replacement of the noten penalty, not as a fully-fledged win. I don't know what happens if you declare ankan, that will likely prevent nagashi mangan. | |||
* Ari KW – Score nagashi mangan as a win (W), voiding noten riichi chombos and collecting riichi bets and honba payments. It is legal to declare a concealed kantsu (K) and still score nagashi mangan. | |||
* Nashi – Don't allow nagashi mangan. | |||
==Tenhou/chihou== | |||
Score a self-drawn win within a hand's first uninterrupted go-around as a yakuman. | |||
* Aari – Score tenhou and chihou as yakuman. | |||
* Nashi – Score these wins as normal hands. | |||
==Kazoe yakuman== | ==Kazoe yakuman== | ||
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* Nashi – Score as a sanbaiman with 6,000 basic points. | * Nashi – Score as a sanbaiman with 6,000 basic points. | ||
== | ==Multiple yakuman== | ||
{{main|Multiple yakuman}} | |||
Score each of the listed patterns as a double yakuman. | Score each of the listed patterns as a double yakuman. | ||