chess.jpgOn this day  August 7, 1970 the first allcomputer chess tournament  was held in New York and won by CHESS 3.0 on a(CDC 6400)  a member of the CDC 6000 series, that was a mainframe computer made by Control Data Corporation.The program was written by Slate, Atkin and Gorlen at Northwestern University. Six programs had entered the first Association for Computing Machinery (ACM) North American Computer Championships. The event was organized by Monty Newborn. The other programs were DALY CP, J Brit, COKO III, SCHACH, and the Marsland CP.