Hashimoto Utaro
Hashimoto Utaro (橋本宇太郎 Hashimoto Utarō, February 27, 1907 - July 24, 1994) was a Japanese professional Go player. Hashimoto achieved the rank of 9-dan.
Hashimoto's teacher was Segoe Kensaku. He was affiliated to the Kansai Ki-in with base in Osaka. (Source: Jan van der Steen's pages)
Major titles:
Founder and first director of the Kansai Ki-in (1950).
He was one of the players in the famous Atomic bomb game.
Wrote a version of the Gokyo Shumyo, a collection of more than 500 tsumego. The book was published by Sankaido?, a publishing office for the Kansai Ki-in in 1980.