呉清源
Segoe had Go Seigen, Utaro Hashimoto, and Cho Hunhyun as pupils. He also authored numerous books, such as his "Tesuji Dictionary" (with Go Seigen) and "Go proverbs Illustrated". An internal quarrel in the Nihon Ki-in led to his becoming an isolated, if very much respected, figure. His participation in competition post-1945 was quite low.