Yaku
Yaku are cumulative unless stated otherwise.
One han
- Riichi
- [The hand must be concealed]
- This yaku is awarded when a player declares "riichi" and wins.
- Ippatsu
- Unbroken
- [The hand must be concealed]
- This is awarded to a player who declares "riichi" and wins before their next discard, as long as no tile calls and quad declarations have been made in between. Other riichi declarations do not break this yaku.
- Menzen Tsumo
- Tsumo
- Fully Concealed Hand
- [The hand must be concealed]
- This is awarded for winning by self-draw with a hand composed entirely of concealed groups and pairs.
- Pinfu
- [The hand must be concealed]
- This is awarded on a closed hand having four sequences and a pair that is either a suit tile or non-value honour tile. The winning tile must complete a sequence with a two-sided wait.
- The 2 fu for winning by tsumo are excluded when this yaku is awarded. This hand will score exactly 20 fu when winning by self-draw, or 30 fu when winning from a discard.
- In the event that the player has placed the drawn tile into their hand, then this yaku is not awarded by default as other players do not know which one is the winning tile.
- Example: 🀋🀌🀍🀙🀚🀛🀜🀝🀠🀠🀐🀑🀒 🀞
- Iipeiko
- Twin Sequences
- [The hand must be concealed]
- Two sequences of the same numbers in the same suit.
- Example: 🀙🀚🀛🀙🀚🀛
- Tanyao
- All Inside
- A hand entirely of suit tiles numbered two to eight.
- Yakuhai
- Value Honour
- A hand containing a triplet or quad of dragons, the player's seat, or the round wind. Multiple value honours combine.
- Chankan
- Robbing a Quad
- This is awarded to a player winning on the tile an opponent uses to promote an open triplet to a quad.
- Since the quad declaration has not been completed, no kan dora indicators are revealed for it.
- It is not allowed to rob a concealed quad.
- Rinshan Kaihou
- After a Quad
- This is awarded for winning on the replacement tile drawn after declaring a quad.
- Since the quad has been made successfully, a kan dora indicator is revealed for it.
- Haitei
- Last Tile Draw
- This is awarded for winning by self-draw on the last tile from the live wall.
- If the last tile is a replacement tile drawn after a quad, only the yaku rinshan kaiho will be scored.
- Houtei
- Last Tile Claim
- This is awarded for winning on the last discard of the hand, when there are no tiles left in the live wall.
Two han
- Daburu Riichi
- Double Riichi
- [The hand must be concealed]
- This is awarded to a player who declared "riichi" on their first discard, as long as no tile calls or concealed quad declarations have been made before. Other riichi declarations do not break "daburu riichi".
- This does not combine with the riichi yaku.
- Chiitoitsu
- Seven Pairs
- [The hand must be concealed]
- This is awarded for having seven different pairs.
- This always scores 25 fu.
- This does not combine with the ryanpeiko yaku.
- Example: 🀌🀌🀙🀙🀛🀛🀠🀠🀑🀑🀀🀀🀅🀅
- Ittsuu
- Full Straight
- [Worth one han if the hand is open]
- This is awarded for having three sequences numbered 1-2-3, 4-5-6, and 7-8-9 in the same suit.
- Example: 🀙🀚🀛🀜🀝🀞🀟🀠🀡
- Sanshoku Doujun
- Mixed Sequences
- [Worth one han if the hand is open]
- This is awarded for having three sequences of the same numbers, one in each suit.
- Example: 🀇🀈🀉🀙🀚🀛🀐🀑🀒
- Sanshoku Doukou
- Mixed Triplets
- This is awarded for having three triplets or quads of the same numbers, one in each suit.
- Example: 🀏🀏🀏🀡🀡🀡🀘🀘🀘
- Toitoi
- All Triplets
- This is awarded for having four triplets or quads and a pair.
- Example: 🀌🀌🀌🀠🀠🀠🀓🀓🀓🀃🀃🀃🀆🀆
- Sanankou
- Three Concealed Triplets
- This is awarded for having three concealed triplets or quads.
- Sankantsu
- Three Quads
- This is awarded for having three quads.
- Chanta
- Common Ends
- [Worth one han if the hand is open]
- This is awarded if all groups and the pair contain at least one terminal or honour tile.
- The hand must have at least one sequence and at least one honour tile.
- Example: 🀇🀈🀉🀙🀚🀛🀡🀡🀡🀖🀗🀘🀀🀀
- Honroutou
- Common Terminals
- This is awarded if all groups and the pair only contain terminal and honour tiles.
- The hand must have at least one terminal tile and at least one honour tile.
- This does not combine with chanta.
- Example: 🀏🀏🀏🀡🀡🀡🀘🀘🀘🀃🀃🀃🀆🀆
- Shousangen
- Little Dragons
- This is awarded for having two triplets or quads of dragons and a pair of dragons.
- This stacks with the yakuhai yaku.
Three han
- Ryanpeikou
- Double Twin Sequences
- [The hand must be concealed]
- This is awarded for having four sequences, two of which form two independent iipeiko.
- Example: 🀈🀉🀊🀈🀉🀊🀙🀚🀛🀙🀚🀛
- Honitsu
- Common Flush
- [Worth two han if the hand is open]
- A hand composed entirely of tiles from a single suit and honour tiles.
- The hand must have at least one suit tile and one honour tile.
- Example: 🀐🀑🀒🀓🀓🀓🀕🀕🀕🀖🀗🀘🀀🀀
Five han
- Renhou
- Blessing of Man
- [The hand must be concealed]
- This is awarded to a player who wins by calling a discard before their first draw, as long as no tile calls or concealed quad declarations have been made before. Riichi declarations do not break this yaku.
- This does not combine with other yaku and dora. If the hand is worth more without this yaku, the highest-scoring possibility must be chosen.
Six han
- Chinitsu
- Perfect Flush
- [Worth five han if the hand is open]
- This is awarded to a player who wins with a hand composed entirely of tiles from one single suit, without any honour tiles.
- This does not combine with honitsu.
- Example: 🀐🀑🀒🀓🀓🀓🀔🀔🀕🀕🀕🀖🀗🀘
Yakuman
- Tenhou
- Blessing of Heaven
- [The hand must be concealed]
- This is awarded to the East player if they win by self draw on the initial deal, and they have not made any concealed quads.
- Chihou
- Blessing of Earth
- [The hand must be concealed]
- This is awarded to a non-East player if they win by self draw on the initial deal, and no calls or concealed quads have been made. Riichi declarations do not break this yaku.
- Kokushi Musou
- Thirteen Orphans
- [The hand must be concealed]
- This is awarded for having one of each of the thirteen different terminal and honour tiles, plus one additional terminal or honour tile.
- Example: 🀇🀏🀙🀡🀐🀐🀘🀀🀁🀂🀃🀆🀅🀄︎ 🀀
- Chuuren Pouto
- Nine Gates
- [The hand must be concealed]
- This is awarded for having the tiles, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9, 9 in a single suit, plus one extra tile of the same suit.
- The hand can be completed on any tile and does not need to be waiting on nine different tiles. This is not valid if the player declares a quad.
- Example: 🀐🀐🀐🀑🀒🀓🀔🀕🀖🀗🀘🀘🀘 🀑
- Ryuuiisou
- All Green
- This is awarded for a hand composed entirely of the tiles among the 2, 3, 4, 6, 8 of bamboo and the Green dragon. The hand does not require the Green dragon.
- Example: 🀑🀒🀓🀓🀓🀓🀕🀕🀕🀗🀗🀅🀅🀅
- Suuankou
- Four Concealed Triplets
- [The hand must be concealed]
- This is awarded for having four concealed triplets or quads.
- The hand must be won by self-draw, or by winning on a discard to complete the pair.
- Suukantsu
- Four Quads
- This is awarded for having four quads.
- A player feeding the last quad may be subject to liability payment.
- Chinroutou
- Perfect Terminals
- This is awarded for a hand composed entirely of terminal tiles, without any honour tiles.
- Example: 🀇🀇🀇🀏🀏🀏🀙🀙🀙🀡🀡🀡🀘🀘
- Tsuuiisou
- All Honours
- This is awarded for a hand composed entirely of honour tiles, without any suit tiles.
- Example: 🀀🀀🀀🀁🀁🀁🀂🀂🀂🀆🀆🀆🀅🀅
- Daisangen
- Big Dragons
- This is awarded for having three triplets or quads of dragons.
- A player feeding the last triplet or quad of dragons may be subject to liability payment.
- Example: 🀆🀆🀆🀅🀅🀅🀄︎🀄︎🀄︎
- Shousuushii
- Little Winds
- This is awarded for having three triplets or quads of winds and a pair of winds.
- Example: 🀀🀀🀀🀁🀁🀁🀂🀂🀂🀃🀃
- Daisuushii
- Big Winds
- This is awarded for having four triplets or quads of winds.
- A player feeding the last triplet or quad of winds may be subject to liability payment.
- Example: 🀀🀀🀀🀁🀁🀁🀂🀂🀂🀃🀃🀃