Jūbango (十番碁) is a Japanese term for a Go match consisting of ten games which might be ended earlier if agreed by both players.
Some notable historical jūbango players are Go Seigen (1914-2014), Kitani Minoru (1909–75), Honinbo Shuei (1852-1907) and Hashimoto Utaro (1907-94).
Both of these features make them different from modern mind sports matches, which tend to be held over a short time in a definite location.
These conventions were revived and made more precise by a series of high-profile matches in the twentieth century, sponsored by the Yomiuri Shimbun.
After a break of 10 years, a jūbango was held in 2014 from 26 January - 28 September between Gu Li and Lee Sedol, two of the world's leading players.