Local yaku: Difference between revisions

'''Local Yaku''' {{kana|ローカル役}} are the [[yaku]] not used in the standard ruleset of [[Japanese mahjong]]. They are also known as '''Ancient Yaku''' {{kana|古役（こやく）}}.  The game may be played with any of the local yaku. Some of them used to be in general ruleset.  The list is extensive.  This page will only record some of them, which will remain incomplete.

== One-han yakus ==

'''Tsubame gaeshi''' {{kana|燕返し}} (lit. ''Swallow Reversal / Return'') is a yaku for claiming a winning hand on opponent's [[riichi]] declaration tile.

** Sometimes Tsubame gaeshi also refers to a cheating techinique of mahjong, which is not related to the yaku. In this case, it means to swap tiles quickly between the wall in front of the player and his starting hand right after finishing haipai.

Depending on rulesets, variation exists between allowing [[ankan]] or not.

'''Kanburi''' / '''Kanfuri''' {{kana|槓振り}} is a yaku for claiming a winning hand on opponent's discarding tile right after they claimed a kan.

The winning tile is not required to be the tile exactly drawn from [[rinshan]]; that being said, as long as an opponent does a kan and discards a deal-in tile immediately, the yaku is automatically achieved.

'''Uushin tsuukan''' {{kana|五心通貫}} is a specific [[ikkitsuukan]] hand with a [[kanchan]] wait of 5 on its straight part. That being said, a hand containing an identical suit of 123-46-789 waiting for 5.

== Two-han yakus ==

'''Sanrenkou''' {{kana|三連刻}} (lit. ''Three consecutive triplets'') is a hand with three triplets in identical suit where their number is increased by 1.

'''Sanshoku tsuukan''' {{kana|三色通貫}} (lit. ''Three-color straight'') is a hand containing [[shuntsu]]s of 123, 456 and 789 both in different suits.  Also called '''Sanshoku ittsuu''' {{kana|三色一通}}, or '''Hon ikkitsuukan''' {{kana|混一気通貫}} (lit. ''Mixed straight'').

When their suits are identical, it becomes the standard yaku [[ikkitsuukan]].

'''Kyandonhou''' {{kana|鏡同和}} (''Twice mixed double sequences'', lit. ''Mirrored identities'') is a hand containing two groups of identical [[shuntsu]]s in two different suits.

Generally speaking, yakuman penalty is applied in some ruleset if a non-riichi player deals into an open-riichi hand deliberately.

'''Isshoku sanjun''' / '''Iisou sanshun''' {{kana|一色三順}} (lit. ''Pure triple sequences'') is a hand built with three identical [[shuntsu]]s, in both numbers and suit.

'''Sanpuukou''' {{kana|三風刻}} (lit. ''Three wind triplets'') is a hand with three triplets of [[kazehai]]s.

A variation exists if all the three wind triplets are [[otakaze]]s: '''Otakaze sankou''' {{kana|客風三刻}} (lit. ''Three guest-wind triplets'').  It is only avaiable for the player with their seat wind identical to the current prevalent wind, e.g. East player in East round, or South player in South round, and so on.

'''Uumensai''' / '''Uumenchi''' {{kana|五門斉}} (lit. ''Five suits collected'') is a yaku of containing all of 5 different suits in a hand: [[manzu]], [[souzu]], [[pinzu]], [[kazehai]] and [[sangenpai]].

Depending on platforms and rule details, Uumensai may have different values. Generally speaking, 2-han version is the easiest one, while extra restriction is applied if the value is higher, such as:

* May limited in closed-hand only.

* Cannot be stacked with [[kokushi musou]] if valued a yakuman.

Uncommonly found in the rulesets, some variation allows to apply a higher han if more consecutive kans are happened.

'''Mondeikou''' {{kana|門泥公}} is a yaku used in 4-[[akadora]] mahjong rules. When a hand contains all four akadoras, Mondeikou is applied.

'''Ikkitsuukan chantaiyaochuu''' {{kana|一気通貫全帯么九}} (''Pure straight with mixed outside-hand''), as its literal meaning, is a mixture hand of [[ikkitsuukan]] and [[chantaiyaochuu]]. More specifically, aside from the shuntsu of 456 in ittsuu part, the rest of hand should satisfy the condition of chanta. Also called '''Ittsuu chanta''' {{kana|イッツーチャンタ}} in short.

Under the general ruleset, such two hands are only valued as ittsuu. As how ittsuu and chanta are defined, they're mutually exclusive and there's no chance to score them together.

'''Tanfonhou''' {{kana|断紅和}} is a hand built by tiles <span style="color:red;">without red</span>. That being said, only the following tiles are available:

: All [[kazehai]] tiles, and

: [[Sangenpai]] of haku / hatsu.

In some ruleset, Tanfonhou is split into two variants: the '''Hontanfon''' {{kana|混断紅}} containing honor tiles, while the '''Chintanfon''' {{kana|清断紅}} only built by numbered tiles.

'''Chinpeikou''' {{kana|清盃口}} is a [[ryanpeikou]] hand with both two groups of [[shuntsu]]s sharing the same numbers. Also called '''Ryanpeikou doujun''' {{kana|二盃口同順}}.

** The kanji prefix "chin" {{kana|清}} in mahjong is generally used to indicate a yaku variant which is built without containing [[honor]] tiles. However there's no such meaning in this yaku, this hand can be actually built with jihai.

The following listed yakus are achieved by taking actions on some particular tiles. Generally speaking, these yakus are inspired by some idioms, verses, or simply the tile patterns.

There're two common scoring mechanics on them:

# Additional 1-han based on the specific operations, which on essence values 2-han in total.

Sometimes both two scoring methods are applied simultaneously, the actual value will be always picked as the highest one.

'''Kinkei dokuritsu''' / '''Chinchi dourii''' {{kana|金鶏独立}} (lit. ''A golden rooster standing alone'') is a four-melded hand waiting for 1-sou's [[Tanki#Hadaka tanki|hadaka tanki]]. Ankans are admitted. Also called '''Chinchiihou''' {{kana|金鶏和}}.

'''Touchao hanchanshue''' {{kana|独釣寒江雪}} is a four-melded hand waiting for [[hadaka tanki]] of [[sangenpai]] haku. Ankans are admitted.

: The two groups of [[shuntsu]]s are limited in manzu and souzu;

: The number of shuntsus cannot be overlapped, e.g. 234 + 456 is invalid.

As how the yaku name indicates, the pinzu pair is the ball, while two shuntsu groups are the two dragons battling for the ball.

Uncommonly found in some platform, this yaku values yakuman with restrictions of consecutive shuntsus and 5-pin as the pair.

'''Renhou''' {{kana|人和}} (''Humanly hand'', ''Hand of man'', ''Blessing of human'') is a yaku achieved by a non-dealer player winning on a discard without self-drawing any tile.

 

Similar to [[tenhou and chiihou]], any calling actions will nullify the yaku.

'''Maneman''' {{kana|真似満}} is a yaku achieved by mimicking opponent's discards. Also called '''Maneshi mangan''' {{kana|真似満貫}}.

Generally speaking, if a player has their discards identical to some opponent in the first row (usually from 1st to 5th / 6th turn), maneman is applied and the opponent will lose a mangan to that player.

Some variations may exist under different rulesets:

'''Paarenchan''' {{kana|八連荘}} (lit. ''Eight consecutive dealership'') is a special winning state related to [[renchan]]. Roughly speaking, if a player successfully keeps his dealership for eight countinous rounds, or simply wins eight hands continuously, the hand he won at the last time will be automatically scored as a yakuman, as long as it is a valid winning hand, no matter how small is its actual value.

More specifically, there're three main variants to determine a paarenchan:

Usually an optional restriction of [[ryanhan shibari|ryanhan-shibari]] will be applied to the dealer after the fifth round. That being said, the dealer can only claim a winning hand with at least 2 han from yakus, otherwise the progress will halt.

Depending on ruleset, the dealership may automatically rotate after paarenchan, or allowing to continue the next loop of paarenchan progress.

With the rule of [[#Paarenchan|paarenchan]] applied, if a non-dealer breaks opponent's dealership successfully at the round the dealer can achieve paarenchan, '''Pouhoi paarenchan''' {{kana|破回八連荘}} (lit. ''Destroyed eighth-dealership'') is achieved. The non-dealer winner will automatically scored a yakuman, no matter how much his hand actually values.

'''Ishino uenimo sannen''' {{kana|石の上にも三年}} (lit. ''Three years on a rock'') is a yaku achieved by winning a [[daburu riichi|double-riichi]] hand with [[haitei raoyue and houtei raoyui|haitei raoyue / houtei raoyui]].

'''Toukanhou''' {{kana|頭槓和}} (lit. ''First-kan win'') is a yaku achieved by claiming a [[kan]] in the first turn and win with [[rinshan kaihou]] immediately.

Due to the required action of kan, this yaku is not available to combine with tenhou and chiihou.

Depending on rulesets, the type of kan may be limited to [[ankan]]-only, or can only be achieved by the dealer.

Similar to [[tenhou and chiihou]], these yakus are only recognized in the first turn of each player, and any calling actions will nullify the yaku.

** When this yaku is not recognized, such hand scores at least a sanbaiman (11 han), with [[tanyao]]'s 1 han + [[pinfu]]'s 1 han + [[ryanpeikou]]'s 3 han + [[chinitsu]]'s 6 han.

** The concrete definition of daisharin may vary in each platform. Some is defined as ryanpeikou, while some is defined by [[chiitoitsu]]. These definitions in fact generate an identical pattern of a concealed hand, and it doesn't hurt under the general ruleset of japanese mahjong. However this will influence the available stacking yakus under [[aotenjou]] rules, which finally brings a different sum-up result.

* Value: Usually yakuman, sometimes sanbaiman or even lower

'''Isshoku yonjun''' / '''Iisou suushun''' {{kana|一色四順}} (lit. ''Pure quadruple sequences'') is a hand containing four identical [[shuntsu]]s in a same suit. Also knowned as '''Suuren taihou''' {{kana|四連太宝}}.

This yaku is harder than [[ryuuiisou]] and [[chinroutou]], as it only contains five kinds of available tiles, and they can't perform any [[shuntsu]].

** This yaku is derived from ryuuiisou, as it utilizes the tiles not used by ryuuiisou.  It used to have a name '''Kouiisou''' {{kana|紅一色}} (lit. ''All red''), but it's vague due to the fact there're many other tiles also containing red.  Hence, this hand is renamed with the peacock pattern of the 1-sou.

'''Golden Gate Bridge''' {{kana|ゴールデンゲートブリッジ、金門橋}} is a hand containing all four [[shuntsu]]s of 123, 345, 567 and 789 in one suit.

** The triplet of South / North is usually not allowed to meld or claim as [[ankan]].

** The two groups of years are usually not allowed in a same suit.

'''Touhoku Shinkansen''' {{kana|東北新幹線}} (''Tohoku Shinkansen'') is a hand built with [[kazehai]] East and North as the pair and a triplet, and an [[ikkitsuukan]] hand as the rest.

When chousangen is not recognized, such hand values single yakuman as [[daisangen]].

When daichisei is not recognized, the hand values single yakuman as [[tsuuiisou]].

'''Junsei ryuuiisou''' {{kana|純正緑一色}} (lit. ''Pure all green'') is an [[ryuuiisou|all-green]] hand built only with the [[souzu]] tile of 2, 3, 4, 6 and 8, which excludes [[hatsu]].