Japanese Mahjong Yaku

Front 1

Betting 1000 points with a concealed hand

Back 1

riichi

1 han, closed hands only

Front 2

Betting 1000 points with a concealed hand, first go-around

Back 2

daburu riichi

2 han, closed hands only

Front 3

Seven unique pairs

Back 3

chiitoitsu; chiitoi

2 han, 25 fu, closed hands only

Front 4

Hand worth no additional fu

Back 4

pinfu

1 han, closed hands only

Front 5

Two identical chi, same suit

Back 5

iipeikou

1 han, closed hands only

Front 6

Same chi in all three suits

Back 6

sanshoku doujun

2 han for closed hands
1 han for open hands

Front 7

1-2-3, 4-5-6, 7-8-9 in the same suit

Back 7

ikkitsuukan, ittsuu

2 han for closed hands
1 han for open hands

Front 8

Two unique sets of identical chi

Back 8

ryanpeikou

3 han, closed hands only

Front 9

All pon

Back 9

toitoihou; toitoi

2 han

Front 10

Three concealed pon

Back 10

san ankou

2 han

Front 11

Same pon in all three suits

Back 11

sanshoku doukou

2 han

Front 12

Three kan

Back 12

san kantsu

2 han

Front 13

All tiles between 2 and 8

Back 13

tanyaochuu, tanyao (closed)
kuitan (open)

1 han

Front 14

Pon of dragons, player's wind, or wind of the round

Back 14

yakuhai, huanpai

1 han each

Front 15

Terminal or honor in each set

Back 15

chantaiyao, chanta

2 han for closed hands
1 han for open hands

Front 16

Single suit w/ honors

Back 16

hon'iso, hon'itsu

3 han for closed hands
2 han for open hands

Front 17

All terminals and honors

Back 17

honroutou toitoihou, honrou toitoi (all pon)
honroutou chiitoitsu, honrou chiitoi (seven pairs)

4 han (don't include han from all pon or seven pairs)

Front 18

Pon or kan of two dragons, pair of the third

Back 18

shousangen

4 han (don't include "special tiles")

Front 19

All from same suit, no honors

Back 19

chin'isou, chin'itsu

6 han for closed hands
5 han for open hands

Front 20

Mahjong on self draw w/ concealed hand

Back 20

menzenchin tsumouhou, tsumo, menzen tsumo

1 han, closed hands only

Front 21

Mahjong within one go-around of calling riichi

Back 21

ippatsu

1 han

Front 22

Mahjong on last tile from wall

Back 22

haitei raoyue

1 han

Front 23

Mahjong on tile discarded after last tile from wall

Back 23

houtei raoyui

1 han

Front 24

Mahjong on supplemental tile after kan

Back 24

rinshan kaihou

1 han

Front 25

Robbing a kan (i.e. kan is made, you can use one of its tiles to call mahjong)

Back 25

chankan

1 han

Front 26

Round is a draw, all discards are terminals and honors

Back 26

nagashi mangan

Mangan

Front 27

One of each terminal and honor, plus an extra of any

Back 27

kokushi musou

Yakuman, closed hands only

Front 28

1-1-1-2-3-4-5-6-7-8-9-9-9, plus one extra of any, all of same suit

Back 28

chuuren poutou

Yakuman, closed hands only
Double yakuman if waiting on any 1-9

Front 29

Four concealed pon

Back 29

suu ankou

Yakuman, closed hands only
Only drawn from wall if two pairs
Double yakuman if single wait

Front 30

Pon or kan of all three dragons

Back 30

daisangen

Yakuman

Front 31

Pon or kan of three winds, pair of fourth

Back 31

shousuushii

Yakuman

Front 32

Pon or kan of all four winds

Back 32

daishuushii

Double yakuman

Front 33

Four kan

Back 33

suu kantsu

Yakuman

Front 34

Only 2, 3, 4, 6, 8 of bamboo, or green dragons

Back 34

ryuuiisou

Yakuman

Front 35

All honors

Back 35

tsuuiisou

Yakuman

Front 36

All terminals

Back 36

chinroutou

Yakuman

Front 37

Seven sequential pairs

Back 37

daisharin

Yakuman
Not used in all rules

Front 38

Dealer's initial 14 tiles are mahjong

Back 38

tenhou

Yakuman
Dealer only, closed hands only

Front 39

Non-dealer can mahjong on first draw

Back 39

chiihou

Yakuman
Non-dealer only, closed hands only

Front 40

Non-dealer can mahjong with discard from first go-around

Back 40

renhou

Yakuman
Non-dealer only, closed hands only
Not used in all rules