Yoshio Ishida

Yoshio Ishida
Full name	Yoshio Ishida
Nickname	The Human Computer
Kanji	石田芳夫
Born	(1948-08-15) August 15, 1948 Kiyosu, Aichi, 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 and author of several books on Go.

Biography

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. He joined the dojo at a young age like his fellow students. 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 Yose play and counting skills were far more accurate than other pros.

Promotion record

Rank	Year	Notes
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

Titles and runners-up

Ranks #9-t in total number 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

Honors

• Medal with Purple Ribbon (2016)