Riichi（1 han (concealed only)）｜Japanese mahjong yaku

Riichi

1 han (concealed only)#

With a concealed hand (no chow, pung or open kong) that is ready, declare riichi and put up 1000 points. You can no longer change your hand; winning adds 1 han and lets you check the ura-dora.

Example

2 Characters3 Characters4 Characters5 Characters6 Characters7 Characters3 Dots4 Dots5 Dots6 Bamboo7 Bamboo8 Bamboo8 Bamboo Win8 Bamboo

RonEast seatEast roundRiichi

Counted by the scoring program:

Riichi1 han · Japanese mahjong yaku
Pinfu1 han · Japanese mahjong yaku
Tanyao1 han · Japanese mahjong yaku
Total3 han, 30 fu · Japanese mahjong yaku

Counterexample

2 Characters3 Characters4 Characters5 Characters6 Characters7 Characters3 Dots4 Dots5 Dots6 Bamboo7 Bamboo8 Bamboo8 Bamboo Win8 Bamboo

RonEast seatEast round

The same hand without a riichi declaration misses this han (it still has all simples, so it can win).