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Jubango
Keywords: Rules, Culture & History, Go term
A jubango (Japanese, meaning ten-game match) is a contest between two players consisting of ten games. Typically the games in these matches were not played with a komi, but according to a system that changes the handicap as a function of who won the previous games. Therefore the implication of jubango can be a little more than simply playing ten games. In most cases a jubango was played at a leisurely, rather than an intense pace, spread out over some months and different locations. The modern master of jubango was undoubtedly Go Seigen. In part because of his position (inside or outside the Nihon Ki-in), newspaper organised several matches between Go and the other top players of the mid 1930s to 1950s. Here is Go's record in jubango go (from Andrew Grant's pages, which are no longer available): 1. 1933-34 - Kitani Minoru match abandoned at 3-3 2. 1939-40 - Kitani Minoru Go won 6-4 3. 1941-42 - Karigane Junichi match abandoned with Go leading 4-1 4. 1942-44 - Fujisawa Kuranosuke at sen, i.e. taking Black Fujisawa won 6-4 5. 1946-48 - Hashimoto Utaro Go won 6-3 with 1 jigo 6. 1948-49 - Iwamoto Kaoru Go won 7-2 with 1 jigo 7. 1949-50 Go won 8-1 with 1 jigo against a team of players. The loss was against Kubouchi Shuchi, the jigo against Sumino Takeshi. 8. 1950-51 - Hashimoto Utaro Go won 5-3 with 2 jigo 9. 1951-52 - Fujisawa Kuranosuke Go won 7-2 with 1 jigo 10. 1952-53 - Fujisawa Kuranosuke match abandoned with Go leading 5-1 11. 1953-54 - Sakata Eio match abandoned with Go leading 6-2 12. 1955-56 - Takagawa Kaku Go won 8-2 --Stefan The handicap system used for these games was called uchikomi. It is based on the ratio of playing Black to playing White in a series of games.
For a more indepth look into this kind of game, I can recommend this excellent --Herman
AvatarDJFlux: In the Edo period Jubango's, or other similar challenges, were used to settle disputes on who was the stronger player: they were involved more often than not in the violent struggle for the Meijin and Godokoro posts, or for a promotion. Here are some of the challenges of the past: 1645-1653 - Honinbo Sanetsu vs. Yasui Sanchi: a six-game Sogo for the title of Meijin. Played on tagai sen, Black won all games, resulting in a 3-3 draw.
1668-1676 - Honinbo Doetsu vs. Yasui Sanchi: Sanchi had managed to be nominated Meijin Godokoro by means of political manoeuvering: Doetsu objected, asking for a Sogo. It was granted but if Doetsu lost he would have been exiled forever.
1705-1706 - Honinbo Dochi vs. Yasui Senkaku: Senkaku (6 dan) had refused to let Dochi (4 dan) play on even against him in the Castle Games, even if he knew Dochi was stronger than his rank.
1737-1740 - Honinbo Shuhaku vs. Inoue Shunseki Inseki: Shuhaku application for promotion to 7 dan was blocked by Hayashi Incho Monnyu (whose application to Meijin was opposed by the Honinbo and Yasui Houses some time before...).
1766-1767 - Honinbo Satsugen vs. Inoue Shunseki Inseki: a twenty-games Sogo to decide the Meijin. After the traditional prearranged Jigo in the first game, Satsugen won the next 5 games and applied for a change in the handicap. A series of mutual objections were landed by the players on how many wins in a row were needed to change the handicap, until the match was suspended. 1840 - Shuwa vs. Inoue Gennan Inseki: Gennan's application for Meijin Godokoro was opposed by Honinbo Josaku, who put forward is heir Shuwa for a Sogo: only one match was played though, as Shuwa's 4-points win with black was so convincing that Genan abandoned the match and his application. 1842 - Shuwa vs. Inoue Gennan Inseki: Again, only one game was played, Shuwa winning this time by six points. Gennan gave up all hopes to become Meijin. 1846-1847 - Honinbo Shuwa vs. Shusaku: a seventeen-game series between teacher and pupils. Shusaku won 13-4 but the series was played at jou-sen throughout, because Shusaku never accepted to play white out of respect for his teacher. 1853 - Shusaku vs. Ota Yuzo: a friendly thirty-game match. It started on even, and it took Shusaku 17 games to force a change in the handicap. Final score 13-7-3 Jigo in Shusaku's favour. 1861 - Shusaku vs. Shuho: a friendly Jubango with Shuho at jou-sen: Shuho won 6-3-1 Jigo. This is a copy of the living page "Jubango" at Sensei's Library. ![]() |