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 still closed and one tile from finished. After the declaration the hand stays closed.
Read the riichi orientation.
Not an American table
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 still closed and one tile from finished. After the declaration the hand stays closed.
American mahjong has no riichi declaration and no yaku. It reads a printed line. See the riichi orientation.