The Oteai (大手合) was a tournament used in
Japan, by the
Nihon Ki-in and
Kansai Ki-in, to determine the ranking of its
go professionals on the
dan scale. It was instituted in the
1920s soon after the Ki-in was set up in
1924. Initially it was run in Spring and Autumn sessions in
Tokyo, with the pros brought together to play around eight games in each session (the name means simply "grand meeting"). It has currently ceased to exist after it was replaced by new reforms.
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