Igo Shinsha

囲碁新社 Splinter group of eight players from the Nihon Ki-in shortly after the end of the Second World War (1947), including Maeda Nobuaki, Sakata Eio and Yamabe Toshiro; also involved Ishige Kakuo, Kodama Kunio, Kajiwara Takeo, Kuwahara Munehisa, Shioiri Itsuzo.

It was dissolved in 1949 - all the players had by then returned to the Nihon Ki-in.