Cho Chikun

Cho Chikun 25th Honinbo Honorary Meijin (Korean: 조치훈; born June 20, 1956) is a professional Go player and a nephew of Cho Namchul. Born in Busan, South Korea, he is affiliated to Nihon Ki-in. His total title tally of 75 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 three 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. He is the author of several books on Go.