gameplay riichi
Riichi
立直
(リーチ)
Definition
Declaring ready - a 1-han yaku and core mechanic of Japanese mahjong. Declared when in tenpai with a closed hand by paying 1,000 points and placing a stick. Locks your hand but enables additional yaku.
Related Terms
Tenpai
聴牌
Ready to win - your hand is one tile away from completing a winning hand. Required to declare riichi.
Ippatsu
一発
A 1-han yaku for winning within one turn cycle after declaring riichi, before your next turn. Negated if someone calls kan during the cycle.
Uradora
裏ドラ
Reverse dora - additional dora indicators revealed only when you win after declaring riichi. Located underneath the regular dora indicators.