Local yaku

Local Yakus 「ローカル役」 are the yaku not used in the standard ruleset of Japanese mahjong. Some of them used to be in general ruleset, they are also known as Ancient Yakus 「古役（こやく）」. The list is extensive. This page will only record some of them, which will remain incomplete.

One-han yakus

Tsubame gaeshi

Tsubame gaeshi 「燕返し」 (lit. Swallow Reversal / Return) is a yaku for claiming a winning hand on opponent's riichi declaration tile.

• Value: 1 han
• Example:
  • Opponent: , Discarded and claimed riichi
  • Self: , Ron:
• Trivia:
  • Tsubame Gaeshi is a famous technique of the legendary Japanese swordsman, Kojirou Sasaki.
  • Sometimes Tsubame gaeshi also refers to a cheating techinique of mahjong, and 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.

Shiiaru raotai

Shiiaru raotai 「十二落抬」 (lit. Twelve tiles falling down) is a hand with 4 melded sets waiting for a single tile (tanki). Also known as Suufuuro tanki「四副露単騎」 (lit. Four-melded single-wait).

Usually restricted to ron-only, but sometimes tsumo is also allowed under some specific rulesets.

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

• Value: 1 han
• Example: , Ron:

Kanburi

Kanburi / Kanfuri 「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 discard a deal-in tile, the yaku will be achieved.

• Value: 1 han

Sangen chiitoitsu / Suushi chiitoitsu

Sangen chiitoitsu 「三元七対子」 / Suushi chiitoitsu 「四喜七対子」 is a chiitoitsu hand containing all of three different pairs of sangenpai / four different pairs of kazehai correspondingly.

• Value: 1 han (actually worths 3 han based on chiitoitsu's 2 han)
• Examples:
  • , Ron: (Sangen chiitoitsu)
  • , Tsumo: (Suushi chiitoitsu)

One-han and above

Uushin tsuukan

Uushin tsuukan 「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.

• Value: Usually 1 additional han based on ittsuu.
• Examples: , Ron:

Two-han yakus

Choupaikou / Sujipaikou / Chousankou

Choupaikou 「跳牌刻」 / Sujipaikou 「筋牌刻」 / Chousankou 「頂三刻」 is a hand containing three triplets in identical suit, where the numbers are stepped by 2, 3 or 4 correspondingly.

• Value: Both are 2 han in general
• Examples:
  • , Ron: (Choupaikou)
  • (Sujipaikou)
  • (Chousankou)

A variation exists if those triplets are in three different suits: Sanshoku choupaikou 「三色跳牌刻」 / Sanshoku sujipaikou 「三色筋牌刻」 / Sanshoku chousankou 「三色頂三刻」.

• Value: 1 or 2 han
• Example: (Sanshoku choupaikou)

Two-han and above

Uumensai

Uumensai / Uumenchi 「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.

• Value: 2 han; or 5 han / yakuman with more restrictions.
• Example: , Tsumo:

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.
• May not allowed in chiitoitsu-form.
• Restricted choices on the pair and sets, e.g. Jihai-pair only.
• Cannot be stacked with kokushi musou if valued a yakuman.

Mondeikou

Mondeikou 「門泥公」 is a yaku used in 4 akadora mahjong rules. When a hand contains all four akadoras, Mondeikou is applied.

• Value:
  • 2 han (may applied with kuisagari); or
  • Minus 4 han, which cancels out akadora's 4 han.
• Example: , Agari: or

Mangan

Kinkei dokuritsu

Kinkei dokuritsu / Chinchi dourii 「金鶏独立」 (lit. A golden cock standing alone) is a four-melded hand waiting for 1-sou's hadaka tanki. Ankans are admitted. Also called Chinchiihou 「金鶏和」.

• Value: Usually 5 han
• Example: , Agari:

Mangan / Baiman / Yakuman

Renhou 「人和」 Closed only Varies as yakuman, mangan, 5 han, or etc.	A non-dealer player wins on a discard at the first round.

Yakuman

Katen gecchi

Shiisanpuutaa 「十三不塔」 Closed only Yakuman	A player is dealt a hand, by which, no two tiles can reasonably form a tile group with a tile draw. For completion, one tile may be paired.
	Agari:

Shiisuupuutaa 「十四不塔」 Closed only Yakuman	A player is dealt a hand, by which, no two tiles can reasonably form a tile group with a tile draw. For completion, no tiles are paired.
	Agari:

Suurenkou 「四連刻」 May be open Yakuman	Four consecutive triplets in one suit.
	Agari:

Yakumans related to specific things

American Civil War

Nanboku sensou 「南北戦争」 (American Civil War) is a hand built with two triplets of South and North, a set of "1861" in identical suit, and a set of "1865" in another suit.

• Restriction:
  • Menzenchin only.
  • 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.
• Value: Yakuman
• Example:
• Trivia:
  • The yaku is originated based on American Civil War. Two sets of numbers indicate its starting year and the ending year, while two sets of honors indicate the two participants: southern United States and northern United States.
  • The yaku is developed from American mahjong, which generally doesn't follow the pattern of traditional mahjong (multiple sets and a pair).

Multiple yakuman

Chousangen

Chousangen 「超三元」 (lit. Super 3 Dragons) is a hand containing all three quads of sangenpais.

• Value: Double yakuman
• Example: , Ron:

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

Daichisei

Main article: Daichisei

Daichisei 「大七星」 (lit. Big seven stars) is a chiitoitsu hand containing all the seven kinds of honor tiles. Also called Jihai chiitoitsu 「字牌七対子」 (lit. Seven pairs of honors).

• Value: Double yakuman
• Example:

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

Junsei ryuuiisou

Junsei ryuuiisou 「純正緑一色」 (lit. Pure all green) is an all-green hand built only with the souzu tile of 2, 3, 4, 6 and 8, which excludes hatsu.

• Value: Double yakuman
• Example: , Ron:

When junsei ryuuiisou is not recognized, the hand may value:

• Single yakuman as ryuuiisou
• 6 / 7 han as tanyao chinitsu, or 5 / 6 han as chinitsu-only with kuitan-nashi, if the variation of ryuuiisou must be built with hatsu.

External links

• 麻雀のローカル役

Local yaku in Japanese Wikipedia