[1] (His surname is occasionally given as Segoshi, but that appears to be a misreading, even if attested by furigana in some books he authored.)
At a time when Japanese Go players were divided into rival groups, Segoe brought together the Honinbo and Houensha factions, founding the Nihon Ki-in in 1924.
Promoted to 7th dan in 1926, he played a key role as the East team captain in the East-West Rivalry Match.
After WW2, Segoe helped rebuild the Nihon Ki-in, became its first chairman, and resumed the "Kido" magazine.
As his health deteriorated, he took his own life at the age of 83 in 1972, shortly after his pupil Cho Hun-hyun returned to South Korea for military service.