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| ==Yaku== | | ==Yaku== |
| {{main|Yaku}} | | {{main|Yaku variations}} |
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| Different yaku may be subject to rule variation. Some are simply not considered standard. | | Different yaku may be subject to rule variation. Some are simply not considered standard. |
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| ===Ippatsu===
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| Score an additional han for winning a [[riichi]] declaration within the next go-around.
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| * Ari – Score ippatsu as an extra 1-han yaku.
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| * Nashi – Don't score ippatsu.
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| ===Daburu riichi===
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| Score [[riichi]] as 2 han yaku instead of 1 han if called within the first uninterrupted go-around of a hand.
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| * Ari – Score daburu riichi as 2 han instead of 1 han.
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| * Nashi – Always score 1 han per riichi declaration.
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| ===Open riichi===
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| 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.
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| * Ari – Allow open riichi along with normal riichi.
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| * Nashi – Don't allow open riichi.
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| Sometimes, directly playing into an open riichi (ron) is penalized by yakuman value.
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| ===Nagashi mangan===
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| 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?
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| * Ari – Score nagashi mangan, but I don't know the details.
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| * 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.
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| * 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.
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| * Nashi – Don't allow nagashi mangan.
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| ===Haitei/houtei===
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| Score the 1-han yaku haitei raoyue for winning with the last tile from the live wall, or score the 1-han yaku houtei raoyui for winning on a discard while the live wall is empty.
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| * Ari – Both yaku are allowed.
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| * Nashi – Neither yaku is allowed.
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| ===Haitei and rinshan===
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| When a [[kan|kantsu]] is declared with exactly one tile left in the live wall, that tile, called the [[haitei|haiteihai]], is appended to the dead wall and never drawn. This rule makes the replacement tile the haiteihai, so winning with that tile scores both [[rinshan kaihou]] (winning after kan) and [[haitei raoyue]] (winning with the last tile).
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| * Ari – Allow this combination. I consider this a bug in the 2012 EMA RCR.
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| * Nashi – Do not allow this combination. This is Japanese default.
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| === Kokushi and chankan ===
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| {{main|Kokushi musou}} <br>
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| {{main|Chankan}}
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| Sometimes, it is allowable for a tenpai kokushi musou to declare ron on an [[Kan|ankan]] and thereby invoking the ability for chankan.
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| * Ari - Allowed
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| * Nashi - Disallowed
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| ===Tenhou/chihou===
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| Score a self-drawn win within a hand's first uninterrupted go-around as a yakuman.
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| * Aari – Score tenhou and chihou as yakuman.
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| * Nashi – Score these wins as normal hands.
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| ===Renhou===
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| This is a yaku for winning on a discard before the winner's first turn in an uninterrupted go-around.
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| * YMan – Yakuman: Score this as a yakuman. No other yaku is necessary.
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| * M – Mangan: Score this as a mangan. No other yaku is necessary.
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| * Yaku – Renhou functions as a regular yaku, with an assigned han value. As a regular yaku, it is capable of combining with other yaku.
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| * Nashi – Renhou is not a yaku. The hand is scored normally, there must be at least one other yaku present for a valid win.
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| ===Daisharin===
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| 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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| :{{#mjt:2233445566778s}} Agari: {{#mjt:8s}}
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| * Ari – Score this hand as a yakuman.
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| * Nashi – Score this hand normally.
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| For souzu and manzu, the hands are labeled as daichikurin and daisuurin.
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| ===Paarenchan===
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| Score the eighth consecutive win of the same dealer as a yakuman.
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| * Ari - Yakuman scored.
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| * Nashi - Eighth hand scored normally.
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| ===Kazoe yakuman===
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| Score a hand with 13 han or more as a yakuman.
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| * Ari – Score as a yakuman with 8,000 basic points.
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| * Nashi – Score as a sanbaiman with 6,000 basic points.
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| ===Double yakuman===
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| Score each of the listed patterns as a double yakuman.
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| * Nashi – All yakuman count as single yakuman. See combined yakuman below for another possibility to score a multiple yakuman.
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| * D – [[Daisuushii]] may be scored as double on its own, or else relegated to a single.
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| * S – [[Suuankou]] [[tanki]] may be scored as double on its own, or else relegated to a single.
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| * K – Kokushi musou shiisanmen machi : Thirteen orphans winning from the thirteen-sided wait on the pair.
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| * 9 – Junsei chuuren poutou : Nine heavenly gates winning from the nine-sided wait 1112345678999.
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| [[Yaku compatability|Different yakuman patterns]] may be combined. However, scoring is handled differently as well. Score more than one yakuman if multiple yakuman are achieved by the same hand.
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| * Ari – Add one yakuman per single yakuman, add two yakuman per double yakuman if allowed, and score the sum.
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| * Nashi – Score only one yakuman per hand, or two yakuman if double yakuman are allowed.
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| ===Rinshan fu===
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| Award a hand winning with the rinshanpai (kan replacement tile) the usual 2 fu for winning with a self-drawn tile.
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| * 2 fu – Award the hand 2 fu for tsumo.
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| * Nashi – Don't count any fu for tsumo on the rinshanpai.
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| == External links == | | == External links == |