Glossary
Chankan (Robbing the Kan): 1-Han Yaku with 0.05% Occurrence Rate
Chankan is a 1-han situational yaku triggered by ron-winning on an opponent's shouminkan (added kan). Learn why ankan does not count, the kokushi-musou exception, why chankan and rinshan kaihou are mutually exclusive, and how to spot the chance in real play.
About 4 min read