Japanese riichi uses 136 tiles, no jokers, and a 13-tile hand. A win needs a yaku. Riichi is declared only while the hand is closed and one tile from finished. After that the hand stays closed. See the riichi page on this site.
Riichi
立直
立直
Japanese riichi uses 136 tiles, no jokers, and a 13-tile hand. A win needs a yaku. Riichi is declared only while the hand is closed and one tile from finished. After that the hand stays closed. See the riichi page on this site.