1) Go competition 
[Go] The Judan (十段)—which can be translated as `10 dan`—is a Go competition in Japan. It is one of the seven major professional titles. The Judan is a Go competition used by the Japanese Nihon-Kiin and Kansai-Kiin. It was started by the Sankei Shimbun newspaper in 1962. The format is similar to the other big titles in Japan. There i...
tenth degree black belt