 Chess playing programs HiTech and Deep Thought defeated chess masters in 1989 . Both were developed by Carnegie Mellon University ; Deep Thought development paved the way for the Deep Blue . 
 Chess playing programs HiTech and Deep Thought defeated chess masters in 1989 . Both <a href='uninflect' title='1'><mark>were</mark></a> developed by Carnegie Mellon University ; Deep Thought development paved the way for the Deep Blue . 
Chess playin programs HiTech and Deep Thought defeated chess masters in 1989 . Both was developed by Carnegie Mellon University ; Deep Thought development paved da way for the Deep Blue .