← All yakuTsuiisou (字一色)13 hanAll honors.Example winning handWinning tile: 5z▶ Try this hand in the calculatorOpen Riichi calculator →Other 13-han yakuKokushi Musou (国士無双)13 hanSuuankou (四暗刻)13 hanDaisangen (大三元)13 hanShousuushii (小四喜)13 han