Optional yaku

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Optional yaku are additional yaku, which may be appended to the standard list according to specific house rules.

Optional yaku

[[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.
Tile-1z.pngTile-1z.pngTile-2z.pngTile-3z.pngTile-3z.pngTile-4z.pngTile-4z.pngTile-5z.pngTile-5z.pngTile-6z.pngTile-6z.pngTile-7z.pngTile-7z.png Agari: Tile-2z.png
[[Daisharin (pinzu)
Daichikurin (souzu)
Daisuurin (manzu)]]
「大車輪、大竹林、大数隣」
Closed only
Yakuman
Any hand that follows this pattern: 22334455667788. The pattern for each suit takes on a different name.
Tile-2m.pngTile-2m.pngTile-3m.pngTile-3m.pngTile-4m.pngTile-4m.pngTile-5m.pngTile-5m.pngTile-6m.pngTile-6m.pngTile-7m.pngTile-8m.pngTile-8m.png Agari: Tile-7m.png
Iishoku sanjun
「一色三順」
May be open
2 han
Three identical sequences in one suit.
Tile-4p.pngTile-4p.pngTile-5p.pngTile-5p.pngTile-6p.pngTile-6p.pngTile-8m.pngTile-8m.pngTile-1z.pngTile-1z.png Tile-4p-e.pngTile-5p.pngTile-6p.png Agari: Tile-8m.png or Tile-1z.png
Iishoku yonjun
「一色四順」
May be open
Yakuman
Four identical sequences in one suit.
Tile-2m.pngTile-2m.pngTile-3m.pngTile-3m.pngTile-4m.pngTile-4m.pngTile-4s.png Tile-2m-e.pngTile-3m.pngTile-4m.pngTile-3m-e.pngTile-2m.pngTile-4m.png Agari: Tile-4s.png
[[Open riichi]]
「オープン立直」
Closed only
2 han
Riichi called where the hand or the tile waits are revealed.
Paarenchan
「八連荘」
May be open, Dealer only
Yakuman
If the dealer wins a hand with eight honba on the table, the hand is scored for yakuman regardless of its usual value, and then the dealership rotates. Usually, paarenchan is not a true yaku and the dealer must still have another yaku to declare a win, but this is not always the case. The exact counting of wins may also vary; some rules may award the yakuman on the eighth win, rather than the ninth, and some rules may require the dealer to actually accumulate that many wins, not just any honba.
[[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.
Sanrenkou
「三連刻」
May be open
2 han
Three consecutive triplets in one suit.
Tile-1m.pngTile-1m.pngTile-1m.pngTile-3m.pngTile-3m.pngTile-3m.pngTile-3p.pngTile-4p.pngTile-1z.pngTile-1z.png Tile-2m.pngTile-2m-e.pngTile-2m.png Agari: Tile-2p.png or Tile-5p.png
Suurenkou
「四連刻」
May be open
Yakuman
Four consecutive triplets in one suit.
Tile-3s.pngTile-3s.pngTile-3s.pngTile-4s.pngTile-4s.pngTile-5s.pngTile-5s.pngTile-5s.pngTile-6s.pngTile-6s.pngTile-6s.pngTile-1z.pngTile-1z.png Agari: Tile-4s.png
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.
Tile-2s.pngTile-5s.pngTile-9s.pngTile-3p.pngTile-9p.pngTile-1m.pngTile-5m.pngTile-8m.pngTile-1z.pngTile-2z.pngTile-4z.pngTile-5z.pngTile-6z.png Agari: Tile-6z.png
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.
Tile-1s.pngTile-4s.pngTile-8s.pngTile-2p.pngTile-6p.pngTile-1m.pngTile-4m.pngTile-9m.pngTile-2z.pngTile-3z.pngTile-5z.pngTile-6z.pngTile-7z.png Agari: Tile-1z.png
Suurenkou
「四連刻」
May be open
Yakuman
Four consecutive triplets in one suit.
Tile-4s.pngTile-4s.pngTile-4s.pngTile-6s.pngTile-6s.pngTile-6s.pngTile-4z.png Tile-5s.pngTile-5s-e.pngTile-5s.pngTile-7s-e.pngTile-7s.pngTile-7s.png Agari: Tile-4z.png


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