People /Ryugo Koyama peoplepill id: koyama-ryugoRK 1 views today 1 views this weekJapanese Go playerRyugo KoyamaBiographyListsAlso ViewedListsRyugo Koyama is in following listsBy field of workFamous Japanese athletesGender: Male, Born in: Years 1930 to 1969By work and/or countryFamous Japanese Go playersGender: Male, Born in: Years 1930 to 1969From our partnersSponsoredRyugo Koyama