Local yaku

Local Yakus 「ローカル役」 are the yakus 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）」.

Disclaimer: There are quite a lot of local yakus in the history. This page will only record some of them. The list is incomplete.

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:

External links

• 麻雀のローカル役

Local yaku in Japanese Wikipedia