hand structure riichi
Sankantsu
三槓子
(さんかんつ)
Definition
Three kans - a 2-han yaku where you have three quads (kan). Very rare. Four kans would be the yakuman suukantsu.
Related Terms
Kan
槓
A quad - four identical tiles. Can be concealed (ankan), open (daiminkan), or added to an existing pon (shouminkan). Reveals an additional dora indicator.
Suukantsu
四槓子
Four kans - a yakuman where you have four quads. One of the rarest yakuman. In some rule sets, if a fifth kan is declared by any player, the hand ends in draw.
Yaku
役
Scoring patterns or hands. You must have at least one yaku to win (except with riichi). Each yaku is worth a certain number of han.