hand structure riichi

Sanshoku Doujun

三色同順

(さんしょくどうじゅん)

Definition

Three colored sequences - a 2-han (closed) or 1-han (open) yaku where you have the same sequence in all three suits (e.g., 234m, 234p, 234s).

順子

Three consecutive numbered tiles of the same suit (e.g., 456 of bamboo). Also called shuntsu or run.

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.