JBvR tells us that Cho Chikun played four games in the 7th Agon Cup.
Won the first, in round 1, as W against O Rissei, W+0.5, on 2000-07-06.
Won the second, in round 2, as B against Tono Hiroaki, B+R, on 2000-07-31.
Won the third, in round 3, as W against Kono Rin, W+R, on 2000-08-21.
Lost the fourth, the final, as W against Cho Sonjin, B+R, on 2000-10-08.