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
See also Go players
External links GoBase Profile 趙善津 Nihon Ki-in Profile