Zen Nihon Igo Senshuken

Zen Nihon Igo Senshuken (全日本囲棋選手権, All Japan Go Championship) was a Japanese professional tournament held twice, in 1934 and 1936. Held in the transitional era from the classical Go, it was not a truly modern tournament. Old match handicap system based on dan ranks was used; komi was used in 1-dan difference games only.

• 1st, 1934 Final: Mukai Kazuo 4 dan, playing Black without komi, beat Go Seigen 6 dan.
• 2nd, 1936 Final: Kubomatsu Katsukiyo 6 dan, playing White receiving a 2.5 point komi, beat Murashima Yoshinori 5 dan.