rules riichi
Ari-ari
アリアリ
(ありあり)
Definition
A rule set where both kuitan (open tanyao) and atozuke (winning with incomplete yaku) are allowed. The most common modern riichi mahjong rule set.
Related Terms
Kuitan
喰い断
Open tanyao - allowing tanyao to be scored with an open hand. The default rule in ari-ari mahjong but forbidden in nashi-nashi.
Atozuke
後付け
Winning with yaku that only becomes valid after the winning tile is drawn or called. For example, calling tiles to complete tanyao where the final tile confirms all simples.