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the [[University of Southern California]] chess program by [[Albert Zobrist]] and [[Frederic Roy Carlson]], assisted by chess master [[Charles Kalme]]. It participated at two [[ACM North American Computer Chess Championship|ACM North American Computer Chess Championships]], [[ACM 1972]] and [[ACM 1973]]. The USC program uses a [[Evaluation functionFunction|scoring function]] that gives credit for having certain patterns present at the board. At time of the ACM 1972, the program searched for about 45 different patterns. The program is structured so that additional patterns can be easily added by a chess player unfamiliar with the details of the program <ref>[[Monroe Newborn]] ('''1975'''). ''Computer Chess''. [https://en.wikipedia.org/wiki/Academic_Press Academic Press], New York, N.Y., Chapter VII. The Third United States Computer Chess Championship</ref>.