The Boris Diplomat BD 11 Computer Chess Companion, designed by Boris and Chafitz in 1980, is an electronic chess game that serves as a valuable companion for chess enthusiasts. Made in the United States, this computer chess program offers a sophisticated gameplay experience that allows users to challenge their problem-solving skills and strategic thinking abilities. With its advanced algorithms and user-friendly interface, the Boris Diplomat BD 11 is a must-have for anyone looking to improve their chess game and enjoy a fun and educational experience. Fully working, in extremely good condition.