strategy riichi
Genbutsu
現物
(げんぶつ)
Definition
A safe tile - specifically a tile that has been discarded by a player after they declared riichi. 100% safe to discard against that player's hand.
Related Terms
Suji
筋
Interval-based safe tile theory. If an opponent discards a 4, then 1 and 7 become safer (suji tiles) because they can't form a ryanmen wait with 4 anymore.
Betaori
ベタ降り
Complete defensive folding. Discarding only 100% safe tiles to avoid dealing into another player's hand, abandoning any chance of winning yourself.
Riichi
立直
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.