Yoo Chang-hyuk
Yoo Changhyuk is a professional Go player in South Korea.
Biography
Yoo Changhyuk was one of Korea's best Go players. Growing up without a teacher, Yoo became a professional in 1984 and was promoted to 9 dan in 1996. He has won many international tournaments for Korea.Titles &; runners-up
| Title | Years Lost |
| Current | 9 |
 |