2-498: Choi Cheol-han , Won Seong-jin , Chen Shiyuan , Park Junghwan , Lee Younggu , Yun Junsang , Kweon Kab-yong (3 October 1957 – 23 January 2023) was a South Korean 9 dan professional Go player . Kweon turned professional in 1975. He started a Go school in Korea in 1989 that is often compared to Kitani Minoru 's school. As of 2003, his school had produced over 100 total dans. This biographical article relating to
4-498: A South Korean Go figure is a stub . You can help Misplaced Pages by expanding it . Choi Cheol-han Choi Cheol-han ( Korean : 최철한 ) is a South Korean professional Go player . He is the fourth youngest (12 years 2 months) to become a professional Go player in South Korean history behind Cho Hun-hyun (9 years 7 months), Lee Chang-ho (11 years 1 months) and Cho Hye-yeon (11 years 10 months). His nickname
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