| Yoshio Ishida | |
|---|---|
| Full name | Yoshio Ishida |
| Nickname | The Human Computer |
| Kanji | 石田芳夫 |
| Born | July 15, 1948 Nagoya, Japan |
| Residence | Tokyo, Japan |
| Teacher | Kitani Minoru |
| Turned pro | 1963 |
| Rank | 9 dan |
| Affiliation | Nihon Ki-in |
Yoshio Ishida (石田 芳夫 Ishida Yoshio, born August 15, 1948) is a professional Go player.[1]
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By the time he was 8, Ishida started learning Go. He was a student at the legendary Kitani Minoru go school. Famous along with his fellow students Cho Chikun, Kobayashi Koichi, Kato Masao, and Takemiya Masaki. Alike his fellow students, he joined the dojo at a young age. He became a professional in 1963 when he was 15. His dan rank grew quickly because of the Oteai. He would go up the ranks faster than rules allowed after winning the first 14 Oteai games when he was being promoted from 6 to 7 dan. He reached 9 dan in 11 years, faster than most other players do. Ishida was given the nickname "The Computer" because his endgame play and counting skills were far more accurate than other pros.
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| 1 dan | 1963 | |
| 2 dan | 1964 | |
| 3 dan | 1965 | |
| 4 dan | 1966 | |
| 5 dan | 1967 | |
| 6 dan | 1969 | |
| 7 dan | 1970 | |
| 8 dan | 1973 | |
| 9 dan | 1974 |
Ranks #11-t in total amount of titles in Japan.
| Domestic | ||
|---|---|---|
| Title | Wins | Runners-up |
| Kisei | 1 (1979) | |
| Meijin | 1 (1974) | 3 (1973, 1975, 1976) |
| Honinbo | 5 (1971–1975) | 2 (1976, 1978) |
| Tengen | 1 (1984) | 1 (1985) |
| Oza | 2 (1974, 1978) | 3 (1975, 1979, 1980) |
| Ryusei | 1 (1991) | |
| NHK Cup | 3 (1987, 1990, 2001) | 2 (1971, 1985) |
| NEC Cup | 1 (1987) | 1 (1988) |
| Nihon-Kiin Championship | 2 (1970, 1971) | 1 (1972) |
| Hayago Championship | 3 (1979, 1982, 1983) | 2 (1987, 2002) |
| Prime Minister Cup | 1 (1968) | |
| Shin-Ei | 1 (1969) | |
| Asahi Pro Best Ten | 2 (1971, 1972) | |
| Total | 22 | 17 |
| International | ||
| IBM Cup | 1 (1988) | 1 (1989) |
| Total | 1 | 1 |
| Career total | ||
| Total | 23 | 18 |