No Result

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    Keywords: Ko, Rules, Go term

No result (J. mushoubu, 無勝負) is a rare game outcome where neither player is considered to have won; and the game is not counted in official results and is replayed. Most commonly it occurs due to repeating whole board situations such as triple ko, quadruple ko, or, more rarely, eternal life. Under Japanese rules (Article 12), such a repeating position becomes a no result if the players agree. Other rulesets contain different provisions.

In the fourth game of the 1980 Meijin Title, played October 8-9, Cho Chikun, playing against Otake Hideo, retook a ko without an intervening ko threat. Since he had asked the game recorder if it was his turn to take the ko, and the game recorder confirmed that it was, the referee, Ishida Yoshio, in a controversial decision, declared the game to be no result..

Although a no result game is not counted in the player's results (unlike jigo), it is still an official game, and receives, for example, its own number in a series. In a best-of-seven match with a no result game, the last game will be considered Game 8.

On June 28th 2007, during the 14th Agon Cup in Japan, a game between Kono Rin 9p and Akiyama Jiro 8p ended in a no result due to the emergence of a quadruple ko. From the inception of the Nihon Kiin on 24th July 1924 till 30th June 2007, there have only been 19 instances of no result recorded. Of the 168 813 games played by Nihon Kiin professionals in this period, only 19 have yielded no result, averaging about 1 no result game every 9000 played. (Translated from an article in Weiqi Tiandi 2007.15).

See Mushoubu/Discussion.


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