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.
Lee Soo-chul
Lee was found dead on October 18, 2011, in an apparent suicide. He was 45.