Hiseikai
Keywords: Culture & History
Group of five players, formed in 1922 to play a multiple round-robin tournament, comprising Karigane Junichi, Segoe Kensaku, Suzuki Tamejiro, Takabe Dohei, and Onoda Chiyotaro.
The games were played with 16 hours thinking time per player. http://lifein19x19.com/forum/viewtopic.php?f=47&t=1299&start=40
裨聖會
tchan001 also see: http://tchan001.wordpress.com/2012/04/18/hiseikai-games-records-2-volumes/