Ryuen Cup

(留園杯争奪早碁トーナメント戦) The Ryuen Cup was a private invitational tournament for young players. The sponsor, Ryuen is a famous Chinese restaurant in Tokyo.

List of winners

Number Year Winner
 1     1977 Kataoka Satoshi 4 dan (d. Ogawa Tomoko 4 dan)
 2     1978 Kataoka Satoshi 5 dan (d. Yamashiro Hiroshi 6 dan)
 3     1979 O Meien 3 dan (d. Sonoda Yasutaka 4 dan)
 4     1980 Kobayashi Satoru 6 dan (d. Aragaki Takeshi 5 dan)
 5     1981 Kobayashi Satoru 6 dan (d. Aragaki Takeshi 5 dan)
 6     1982 Hikosaka Naoto 5 dan (d. Ishikura Noboru 4 dan)
 7     1983 Tei Meiko 4 dan (d. Yasuda Yasutoshi  dan)
 8     1984 Ogata Masaki 5 dan (d. Oya Koichi 4 dan)
 9     1985 Michael Redmond 4 dan (d. Muramatsu Ryuichi 4 dan)
10     1986 Cho Sonjin 4 dan (d. Muramatsu Ryuichi 4 dan)

The 10th tournament seems to have been the last one.