CHAOS © 1969 RCA Laboratories.
Chess program written in FORTRAN
CHAOS stand for Chess Heuristics And Other Stuff.
The program participated in 12 North American Computer Chess Championships and four world chess chess championships. Development started in the late 60s at RCA and later continued at the University of Michigan. It was continuously developed until the mid 80s.
Authors: Ira Ruben, Fred Swartz, Victor Berman, Joe Winograd, William Toikka