Yun Seong-hyeon
Keywords: People
(b.1975-06-30) Korean pro 9 dan. Promoted to 1-dan in 1989. On 2004-03-15 became 9-dan.
In 2013, July, he reached 700 wins (23th korean professional player).
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(b.1975-06-30) Korean pro 9 dan. Promoted to 1-dan in 1989. On 2004-03-15 became 9-dan.
In 2013, July, he reached 700 wins (23th korean professional player).