The dan (段) ranking system is used by many Japanese, Okinawan, Korean, and other martial arts organizations to indicate the level of a person's ability within a given system. Used as a ranking system to quantify skil… See more

The dan ranking system in Go was devised by Hon'inbō Dōsaku (1645–1702), a professional Go player in the Edo period. Prior to the invention, top-to-bottom ranking was evaluated by comparison of handicap and tende… See more

Traditionally, the level of Go players has been defined using kyū and dan ranks. Kyu ranks are considered student ranks, whilst dan ranks are considered master ranks. Especially in amateur play, these ranks facilitate the … See more