Cho Nam-chul
Cho Namchul (November 30, 1923 - July 2, 2006, alternately Cho Namcheol) was a professional Go player (Baduk in Korean). He died of natural causes in Seoul at the age of 83.
Cho Chikun
Cho Chikun "25th Honinbo" "Honorary Meijin" (; born June 20, 1956 in Busan, South Korea) is a professional Go player and a nephew of Cho Namchul. His total title tally of 73 titles is the most in the history of the Japanese Nihon Ki-in. Cho is the first player to hold the top three titles—Kisei, Meijin, and Honinbo—simultaneously which he did for 3 years in a row. Cho is the first in history to win all of the "Top 7" titles in Japan (Kisei, Meijin, Honinbo, Judan, Tengen, Oza, and Gosei) which he achieved by winning the Oza in 1994. Cho U in 2011 and Iyama Yuta in 2013 would duplicate this feat, both by winning the Kisei. He is also one of the 'Six Supers' Japanese players that were most celebrated in the late twentieth century, along with Rin Kaiho, Otake Hideo, Takemiya Masaki, Kato Masao and his classmate and arch-rival Kobayashi Koichi.Cho was born into a very rich family of six children. His grandfather was a bank director. During the Korean War, the money the family had owned was burnt and they became impoverished. His father then sought the advice of a fortune teller. Originally called Pung-yeon, Cho's name was changed to Chihun, as the fortune teller told him to change his son's name to Chihun or else his mother would die, also saying that following the change, Chihun's younger brother would die but Chihun would become famous. Both predictions proved accurate.