Cho Sonjin
South Korean Go player
About Cho Sonjin
Born 1970. Cho Sonjin is a South Korean go professional.
Cho Sonjin (; born April 18, 1970) is a professional Go player.
Cho was born in South Korea, but moved to Japan at age 12 in order to become a professional. He accomplished his goal two years later in 1984. He was promoted to 9 dan in 1998. In 1999, he defeated Cho Chikun in the Honinbo, ending Chikun's 10-year run with the title.
Titles and runners-up Title Years Held Current 5 Honinbo 1999 NEC Cup 2006 Agon Cup 2000, 2001 Shinjin-O 1991 Defunct 1 Shin-Ei 1991 Continental 2 China-Japan Agon Cup 2000, 2001
Title Years Lost Current 4 Kisei 2001 Honinbo 2000 Tengen 2002 Shinjin-O 1995 International 1 Samsung Cup 1999
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Important facts
People in Cho Sonjin's life
Named in this biography and alive at the same time
Related people
Same field, nearest in time
Contemporaries
People whose lives overlapped Cho Sonjin's
Frequently asked questions
Who is Cho Sonjin?
South Korean Go player
When was Cho Sonjin born?
Cho Sonjin was born on 18 April 1970 in Gwangju.
What is Cho Sonjin's occupation?
Cho Sonjin is a go professional.
What nationality is Cho Sonjin?
Cho Sonjin is South Korean.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Cho Sonjin. https://biography.guide/cho-sonjin/
MLA: "Cho Sonjin." Biography.guide, https://biography.guide/cho-sonjin/.
Chicago: "Cho Sonjin." Biography.guide. https://biography.guide/cho-sonjin/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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