Local yaku

Local Yakus 「ローカル役」 are the yaku not used in the standard ruleset of Japanese mahjong. Some of them are used to be in general ruleset before, 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.

Two-han and above

Mondeikou

Mondeikou 「門泥公（もんでいこう）」 is a yaku used in 4 akadora mahjong rules. When a hand contains all four akadoras, Mondeikou is applied.

Value: 2 han (may include kuisagari); or minus 4 han which cancels out akadora's 4 han.

Example: , Agari: or

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

Daichisei 「大七星」 Closed only Yakuman, or double yakuman	The seven pair variant to tsuuiisou. This may count as an independent yakuman pattern. Otherwise, it may be counted as tsuuiisou.
	Agari:

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:

Double yakuman

Chousangen

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

Example: , Ron:

External links

• 麻雀のローカル役

Local yaku in Japanese Wikipedia