The document summarizes the evolution of computer chess from its early beginnings in the 1950s to more advanced programs in the late 1990s and early 2000s. It describes several notable computer chess programs from each era like Deep Thought, Deep Blue, Chessterfield vi3, Star Wars Chess, and Chessmaster 8,000. It also discusses the improvements in algorithms, search techniques, and hardware that led to stronger computer chess players over time.