File:JohnMcCarthy.jpg

John McCarthy, artificial intelligence pioneer, playing chess at Stanford's IBM 7090 | Mastering the Game | The Computer History Museum 1967 ca., Courtesy Stanford University, McCarthy.jpg from Index of /pub/voy/museum/pictures/display

John McCarthy used an improved version of the Kotok program to play correspondence chess against a Soviet program developed at the Moscow Institute of Theoretical and Experimental Physics (ITEP) by George Adelson-Velsky and others. In 1967, a four-game match played over nine months was won 3-1 by the Soviet program.