Yaku variations: Difference between revisions

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Different [[yaku]] may be subject to [[rule variations]].  The variations may include altering the different strengths of the yaku, in relation to point values. A number of yaku are simply not considered standard.
Different [[yaku]] may be subject to [[rule variations]], such as altering the value or conditions of the yaku. A number of yaku are not included by default.


==Daburu riichi==
<div style="float:right; margin:0 0 1em 1em;">__TOC__</div>
 
== Chiitoitsu ==
{{main|Chiitoitsu}}
Under most rulesets, chiitoitsu requires 7 unique pairs.
 
Some house rules may allow duplicate pairs (meaning 4-of-a-kind counts as 2 pairs), but this is not seen in standard play.
 
== Double riichi ==
{{main|Double riichi}}
{{main|Double riichi}}
{{rulevar
 
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
}}
Score [[riichi]] as 2 han yaku instead of 1 han if called within the first uninterrupted go-around of a hand.
Score [[riichi]] as 2 han yaku instead of 1 han if called within the first uninterrupted go-around of a hand.


* Ari – Score daburu riichi as 2 han instead of 1 han.
* Ari – Score [[double 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 and houtei==
== Double yakuman ==
{{rulevar
Score each of the listed patterns as a double yakuman.
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
 
}}
* Nashi – All individual yakuman count as single yakuman.
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.
* D – [[Daisuushii]]: Daisuushii counts as a double yakuman on its own.
* S – [[Suuankou]] tanki: Suuankou on a [[tanki]] wait counts as a double yakuman.
* K – [[Kokushi musou]] juusanmen machi : Kokushi with the thirteen-sided wait on the pair counts as a double yakuman.
* 9 – Junsei [[chuuren poutou]]: Chuuren with the nine-sided wait (tenpai with 1112345678999) counts as a double yakuman.
 
== Haitei and houtei ==
Score [[haitei]] and [[houtei]].


* Ari – Both yaku are allowed.
* Ari – Both yaku are allowed.
* Nashi – Neither yaku is allowed.
* Nashi – Neither yaku is allowed.


==Haitei and rinshan==
== Haitei and rinshan ==
{{rulevar
[[Haitei]] normally requires a draw from the live wall, while [[kan]] draws from the dead wall. This rule, if ari, negates hatei's live wall requirement, allowing haitei and [[rinshan]] to score together.
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
}}
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).


* Ari – Allow this combination. I consider this a bug in the 2012 EMA RCR.
* Ari – Allow this combination. Used in the 2012 [[EMA]] MCR.
* Nashi – Do not allow this combination. This is Japanese default.
* Nashi – Do not allow this combination. This is Japanese default.


==Ippatsu==
== Honitsu and Chinitsu ==
{{rulevar
Score 1 more han for closed honitsu or chinitsu than open.
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
 
}}
* Ari – Closed honitsu is scored 3 han and closed chinitsu is scored 6 han.
* Nashi – Honitsu is always scored 2 han and chinitsu is always scored 5 han, regardless of the hand state.
 
== Ippatsu ==
{{Main|Ippatsu}}
 
Score an additional han for winning a [[riichi]] declaration within the next go-around.
Score an additional han for winning a [[riichi]] declaration within the next go-around.


* Ari – Score ippatsu as an extra 1-han yaku.
* Ari – Score ippatsu as a 1-han yaku.
* Nashi – Don't score ippatsu.
* Nashi – Don't score ippatsu.


==Kazoe yakuman==
== Kazoe yakuman ==
{{main|Kazoe yakuman}}
{{main|Kazoe yakuman}}
{{rulevar
 
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
}}
Score a hand with 13 han or more as a yakuman.
Score a hand with 13 han or more as a yakuman.


Line 50: Line 62:
== Kokushi and chankan ==
== Kokushi and chankan ==
{{main|Kokushi musou|Chankan}}
{{main|Kokushi musou|Chankan}}
{{rulevar
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
}}
Sometimes, it is allowable for a tenpai kokushi musou to declare ron on an [[Kan|ankan]] and thereby invoking the ability for chankan.


* Ari - Allowed
Allow a hand in tenpai for [[kokushi]] to ron an [[ankan]] through chankan.
* Nashi - Disallowed


==Multiple yakuman==
* Ari – Allowed
* Nashi – Disallowed
 
== Multiple yakuman ==
{{main|Multiple yakuman}}
{{main|Multiple yakuman}}
{{rulevar
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
}}
Score each of the listed patterns as a double yakuman.


* Nashi – All yakuman count as single yakuman. See combined yakuman below for another possibility to score a multiple yakuman.
Allow yakuman to be combined.
* D – [[Daisuushii]] may be scored as double on its own, or else relegated to a single.
* S – [[Suuankou]] [[tanki]] may be scored as double on its own, or else relegated to a single.
* K – Kokushi musou shiisanmen machi : Thirteen orphans winning from the thirteen-sided wait on the pair.
* 9 – Junsei chuuren poutou : Nine heavenly gates winning from the nine-sided wait 1112345678999.


[[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.
* Ari – Yakuman can be combined.
* Nashi – Yakuman cannot be combined; score only one type of yakuman per hand.


* Ari – Add one yakuman per single yakuman, add two yakuman per double yakuman if allowed, and score the sum.
== Optional yaku ==
* Nashi – Score only one yakuman per hand, or two yakuman if double yakuman are allowed.
{{main|Optional yaku}}


==Open riichi==
Many yaku are not included in the [[list of yaku]], as they are not accepted as "standard yaku". House rules may include any amount of desired yaku. The following are particularly common examples; the [[optional yaku]] page contains more detailed rules and many more yaku.
{{rulevar
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
}}
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.
=== Daisharin ===
* Nashi – Don't allow open riichi.
Daisharin is an [[optional yaku]], formed with a hand consisting of pinzu's 22334455667788. If disabled, such a hand would be worth at least 10 han.


Sometimes, directly playing into an open riichi (ron) is penalized by yakuman value.
:{{#mjt:2233445566778p}} Agari: {{#mjt:8p}}


==Optional yaku==
* Ari – Score this hand as a yakuman.
{{main|Optional yaku}}
* Nashi – Score this hand normally.


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.
For souzu and manzu, the hands are labeled as daichikurin and daisuurin, respectively.


===Daisharin===
=== Open riichi ===
{{rulevar
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 the hand's waits, or the entire hand, at the same time as the declaration.
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
}}
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]].


:{{#mjt:2233445566778s}} Agari: {{#mjt:8s}}
* Ari – Allow open riichi along with normal riichi.
* Wait shape – The declarer only needs to reveal 1, 4, 7, or 10 tiles if these completely describe the wait shape of the hand. The pair or pair wait must always be revealed.
* Nashi – Don't allow open riichi.


* Ari – Score this hand as a yakuman.
In a few rulesets, intentionally dealing into an open riichi will raise the hand up to a [[yakuman]] (penalizing the discarder).
* Nashi – Score this hand normally.


For souzu and manzu, the hands are labeled as daichikurin and daisuurin.
=== Paarenchan ===
 
Score the eighth consecutive win of the same dealer as a [[Optional yaku|yakuman]].
===Paarenchan===
{{rulevar
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
}}
Score the eighth consecutive win of the same dealer as a yakuman.


* Ari - Yakuman scored.
* Ari - Yakuman scored.
* Nashi - Eighth hand scored normally.
* Nashi - Eighth hand scored normally.


===Renhou===
=== Renhou ===
{{main|Renhou}}
{{main|Renhou}}
{{rulevar
 
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
}}
This is a yaku for winning on a discard before the winner's first turn in an uninterrupted go-around.
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.
* YMan – Yakuman: Score this as a yakuman. No other yaku is necessary.
* M – Mangan: Score this as a mangan. No other yaku is necessary.
* M – Mangan: Score this as a mangan. No other yaku is necessary. If a regular count of the hand would give haneman or better, the normal scoring is used.
* Yaku – Renhou functions as a regular yaku, with an assigned han value. As a regular yaku, it is capable of combining with other yaku.
* 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.
* Nashi – Renhou is not a yaku. The hand is scored normally, there must be at least one other yaku present for a valid win.


==Pao==
== Pao ==
{{main|Sekinin barai}}
{{main|Sekinin barai}}
{{rulevar
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
}}
Pao applies to an alternative point exchange, in the event of making foolish discards, which gives players particular advantages.


===Daisangen and daisuushii===
Pao is a penalty applied to players who allow others to guarantee certain types of yaku/yakuman.
{{rulevar
 
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
=== Daisangen and daisuushii ===
}}
Impose a liability payment on the player who has dealt the third pon/kanned dragon tile, or the fourth pon/kanned wind tile, if the caller wins with [[daisangen]] (big three dragons) or [[daisuushii]] (big four winds) later.
Impose a liability payment on the player who has dealt the third ponned dragon tile, or the fourth ponned wind tile, if the caller wins with [[daisangen]] (big three dragons) or [[daisuushii]] (big four winds) later.


* Ari – Liable player pays full on tsumo, half on ron.
* Ari – Liable player pays full on tsumo, half on ron.
* Nashi – No liability for daisangen or daisuushii.
* Nashi – No liability for daisangen or daisuushii.


===Suukantsu===
=== Suukantsu ===
{{rulevar
Impose a liability payment on the player who has dealt the fourth kanned tile, if the caller wins with [[suukantsu]] (four [[kantsu]]) later.
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
}}
Impose a liability payment on the player who has dealt the fourth kanned tile, if the caller wins with [[suukantsu]] (four kantsu) later.


* Ari – Liable player pays full on tsumo, half on ron.
* Ari – Liable player pays full on tsumo, half on ron.
* Nashi – No liability for suukantsu.
* Nashi – No liability for suukantsu.


==Nagashi mangan==
=== Daiminkan rinshan ===
Require that a player pay for a hand, as for a ron, when his or her discard is called for [[daiminkan]] and the caller wins a tsumo for [[rinshan kaihou]] on the replacement tile.
 
* Ari – Player dealing into daiminkan (or another kan called in the same turn) pays for the whole hand.
* Nashi – All players pay for the hand, as normal for a tsumo.
 
== Pinfu tsumo ==
{{main|Pinfu}}
 
Allow pinfu to waive the 2 fu from [[tsumo]], so that pinfu and [[menzen tsumo]] can be scored together.
 
* Ari - Pinfu and menzen tsumo can be scored together, for a base of 2 han 20 fu.
* Nashi - Pinfu cannot be scored if the hand wins by tsumo. An otherwise pinfu hand won with tsumo scores 1 han 30 fu.
 
== Nagashi mangan ==
{{main|Nagashi mangan}}
{{main|Nagashi mangan}}
{{rulevar
 
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
}}
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?
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?


Line 163: Line 157:
* Nashi – Don't allow nagashi mangan.
* Nashi – Don't allow nagashi mangan.


==Rinshan fu==
== Rinshan fu ==
{{main|Rinshan kaihou}}
{{main|Rinshan kaihou}}
{{rulevar
 
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
}}
Award a hand winning with the rinshanpai (kan replacement tile) the usual 2 fu for winning with a self-drawn tile.
Award a hand winning with the rinshanpai (kan replacement tile) the usual 2 fu for winning with a self-drawn tile.


Line 173: Line 165:
* Nashi – Don't count any fu for tsumo on the rinshanpai.
* Nashi – Don't count any fu for tsumo on the rinshanpai.


==Tenhou and chiihou==
== Ryanpeikou ==
{{main|Ryanpeikou}}
 
Score 3 han for completing two iipeikou in a hand.
 
* Ari – Score ryanpeikou as a 3-han yaku.
* Nashi – Ryanpeikou is not used. In this case the hand will score two iipeikou for 2 han.
 
== Ryuuiisou ==
{{main|Ryuuiisou}}
 
A limit may be imposed on [[ryuuiisou]] to include or exclude [[hatsu]].
 
* Incl – Include hatsu
* Req – Require hatsu
* Excl – Exclude hatsu
 
== Tenhou and chiihou ==
{{main|Tenhou and chiihou}}
{{main|Tenhou and chiihou}}
{{rulevar
 
|WRR= |EMA= |JPML= |NPM= |Saikou= |Mu= |RMU= |101= |Tenhou= |Saikyou= |KML= |USPML= |Montr= <!--For ease of adding columns-->
}}
Score a self-drawn win within a hand's first uninterrupted go-around as a yakuman.
Score a self-drawn win within a hand's first uninterrupted go-around as a yakuman.


* Aari – Score tenhou and chihou as yakuman.
* Ari – Score tenhou and chiihou as yakuman.
* Nashi – Score these wins as normal hands.
* Nashi – Score these wins as normal hands.


==External links==
[[Category:Rule variations]]
[[Category:Rule variations]]

Latest revision as of 17:29, 12 October 2024

Different yaku may be subject to rule variations, such as altering the value or conditions of the yaku. A number of yaku are not included by default.

Chiitoitsu

Main article: Chiitoitsu

Under most rulesets, chiitoitsu requires 7 unique pairs.

Some house rules may allow duplicate pairs (meaning 4-of-a-kind counts as 2 pairs), but this is not seen in standard play.

Double riichi

Main article: Double riichi

Score riichi as 2 han yaku instead of 1 han if called within the first uninterrupted go-around of a hand.

  • Ari – Score double riichi as 2 han instead of 1 han.
  • Nashi – Always score 1 han per riichi declaration.

Double yakuman

Score each of the listed patterns as a double yakuman.

  • Nashi – All individual yakuman count as single yakuman.
  • D – Daisuushii: Daisuushii counts as a double yakuman on its own.
  • S – Suuankou tanki: Suuankou on a tanki wait counts as a double yakuman.
  • K – Kokushi musou juusanmen machi : Kokushi with the thirteen-sided wait on the pair counts as a double yakuman.
  • 9 – Junsei chuuren poutou: Chuuren with the nine-sided wait (tenpai with 1112345678999) counts as a double yakuman.

Haitei and houtei

Score haitei and houtei.

  • Ari – Both yaku are allowed.
  • Nashi – Neither yaku is allowed.

Haitei and rinshan

Haitei normally requires a draw from the live wall, while kan draws from the dead wall. This rule, if ari, negates hatei's live wall requirement, allowing haitei and rinshan to score together.

  • Ari – Allow this combination. Used in the 2012 EMA MCR.
  • Nashi – Do not allow this combination. This is Japanese default.

Honitsu and Chinitsu

Score 1 more han for closed honitsu or chinitsu than open.

  • Ari – Closed honitsu is scored 3 han and closed chinitsu is scored 6 han.
  • Nashi – Honitsu is always scored 2 han and chinitsu is always scored 5 han, regardless of the hand state.

Ippatsu

Main article: Ippatsu

Score an additional han for winning a riichi declaration within the next go-around.

  • Ari – Score ippatsu as a 1-han yaku.
  • Nashi – Don't score ippatsu.

Kazoe yakuman

Main article: Kazoe yakuman

Score a hand with 13 han or more as a yakuman.

  • Ari – Score as a yakuman with 8,000 basic points.
  • Nashi – Score as a sanbaiman with 6,000 basic points.

Kokushi and chankan

Main articles: Kokushi musou and Chankan

Allow a hand in tenpai for kokushi to ron an ankan through chankan.

  • Ari – Allowed
  • Nashi – Disallowed

Multiple yakuman

Main article: Multiple yakuman

Allow yakuman to be combined.

  • Ari – Yakuman can be combined.
  • Nashi – Yakuman cannot be combined; score only one type of yakuman per hand.

Optional yaku

Main article: Optional yaku

Many yaku are not included in the list of yaku, as they are not accepted as "standard yaku". House rules may include any amount of desired yaku. The following are particularly common examples; the optional yaku page contains more detailed rules and many more yaku.

Daisharin

Daisharin is an optional yaku, formed with a hand consisting of pinzu's 22334455667788. If disabled, such a hand would be worth at least 10 han.

Agari:
  • Ari – Score this hand as a yakuman.
  • Nashi – Score this hand normally.

For souzu and manzu, the hands are labeled as daichikurin and daisuurin, respectively.

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 the hand's waits, or the entire hand, at the same time as the declaration.

  • Ari – Allow open riichi along with normal riichi.
  • Wait shape – The declarer only needs to reveal 1, 4, 7, or 10 tiles if these completely describe the wait shape of the hand. The pair or pair wait must always be revealed.
  • Nashi – Don't allow open riichi.

In a few rulesets, intentionally dealing into an open riichi will raise the hand up to a yakuman (penalizing the discarder).

Paarenchan

Score the eighth consecutive win of the same dealer as a yakuman.

  • Ari - Yakuman scored.
  • Nashi - Eighth hand scored normally.

Renhou

Main article: 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. If a regular count of the hand would give haneman or better, the normal scoring is used.
  • 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.

Pao

Main article: Sekinin barai

Pao is a penalty applied to players who allow others to guarantee certain types of yaku/yakuman.

Daisangen and daisuushii

Impose a liability payment on the player who has dealt the third pon/kanned dragon tile, or the fourth pon/kanned wind tile, if the caller wins with daisangen (big three dragons) or daisuushii (big four winds) later.

  • Ari – Liable player pays full on tsumo, half on ron.
  • Nashi – No liability for daisangen or daisuushii.

Suukantsu

Impose a liability payment on the player who has dealt the fourth kanned tile, if the caller wins with suukantsu (four kantsu) later.

  • Ari – Liable player pays full on tsumo, half on ron.
  • Nashi – No liability for suukantsu.

Daiminkan rinshan

Require that a player pay for a hand, as for a ron, when his or her discard is called for daiminkan and the caller wins a tsumo for rinshan kaihou on the replacement tile.

  • Ari – Player dealing into daiminkan (or another kan called in the same turn) pays for the whole hand.
  • Nashi – All players pay for the hand, as normal for a tsumo.

Pinfu tsumo

Main article: Pinfu

Allow pinfu to waive the 2 fu from tsumo, so that pinfu and menzen tsumo can be scored together.

  • Ari - Pinfu and menzen tsumo can be scored together, for a base of 2 han 20 fu.
  • Nashi - Pinfu cannot be scored if the hand wins by tsumo. An otherwise pinfu hand won with tsumo scores 1 han 30 fu.

Nagashi mangan

Main article: 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.

Rinshan fu

Main article: Rinshan kaihou

Award a hand winning with the rinshanpai (kan replacement tile) the usual 2 fu for winning with a self-drawn tile.

  • 2 fu – Award the hand 2 fu for tsumo.
  • Nashi – Don't count any fu for tsumo on the rinshanpai.

Ryanpeikou

Main article: Ryanpeikou

Score 3 han for completing two iipeikou in a hand.

  • Ari – Score ryanpeikou as a 3-han yaku.
  • Nashi – Ryanpeikou is not used. In this case the hand will score two iipeikou for 2 han.

Ryuuiisou

Main article: Ryuuiisou

A limit may be imposed on ryuuiisou to include or exclude hatsu.

  • Incl – Include hatsu
  • Req – Require hatsu
  • Excl – Exclude hatsu

Tenhou and chiihou

Main article: Tenhou and chiihou

Score a self-drawn win within a hand's first uninterrupted go-around as a yakuman.

  • Ari – Score tenhou and chiihou as yakuman.
  • Nashi – Score these wins as normal hands.
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