Prime Minister's Cup

(首相杯争奪高段者トーナメント) Japanese title 1957-1981, restricted entry (5p to 7p of Nihon Kiin Tokyo branch only). Named for Hatoyama Ichiro.

Winners:

• 1st, 1957 Fujisawa Hideyuki
• 2nd, 1958 Okubo Ichigen
• 3rd, 1959 Hasegawa Akira
• 4th, 1960 Ohira Shuzo
• 5th, 1961 Kano Yoshinori
• 6th, 1962 Hayashi Yutaro
• 7th, 1963 Sakakibara Shoji
• 8th, 1964 Miwa Yoshiro
• 9th, 1965 Otake Hideo
• 10th, 1966 Hoshino Toshi
• 11th, 1967 Suzuki Goro
• 12th, 1968 Ishida Yoshio
• 13th, 1969 Takagi Shoichi
• 14th, 1970 Kojima Takaho
• 15th, 1971 Takemiya Masaki
• 16th, 1972 Kobayashi Koichi
• 17th, 1973 Takemiya Masaki
• 18th, 1974 Kobayashi Koichi
• 19th, 1975 Takagi Shoichi
• 20th, 1976 Kobayashi Koichi
• 21st, 1977 Awaji Shuzo
• 22nd, 1978 Nakamura Hidehito
• 23rd, 1979 Haruyama Isamu
• 24th, 1980 Fukui Masaaki
• 25th, 1981 Awaji Shuzo