Yokoyama Koichi
Keywords: People
横山孝一 Yokoyama Kōichi (b.1919) Nihon Ki-in professional, 6 dan in 1977. Close friend of the late Kageyama Toshiro, they collaborated on the book Kage's Secret Chronicles of Handicap Go.
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横山孝一 Yokoyama Kōichi (b.1919) Nihon Ki-in professional, 6 dan in 1977. Close friend of the late Kageyama Toshiro, they collaborated on the book Kage's Secret Chronicles of Handicap Go.