2007/07/20 by Jonathan Schaeffer, Neil Burch, Yngvi Björnsson +5 · 438 citations
Computer Science · Psychology · Social Sciences · Engineering · #Artificial Intelligence in Games #Educational Games and Gamification #Digital Games and Media #Heuristics #Computer science #Task (project management) #Heuristic #Artificial intelligence #Process (computing) #State (computer science) #Video game #Perfection #Algorithm #Programming language #Multimedia #Engineering
paper · doi:10.1126/science.1144079
published in Science 317(5844), 1518-1522 (American Association for the Advancement of Science)
openalex publication_date 2007/07/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/25
The game of checkers has roughly 500 billion billion possible positions (5 x 10(20)). The task of solving the game, determining the final result in a game with no mistakes made by either player, is daunting. Since 1989, almost continuously, dozens of computers have been working on solving checkers, applying state-of-the-art artificial intelligence techniques to the proving process. This paper announces that checkers is now solved: Perfect play by both sides leads to a draw. This is the most challenging popular game to be solved to date, roughly one million times as complex as Connect Four. Artificial intelligence technology has been used to generate strong heuristic-based game-playing programs, such as Deep Blue for chess. Solving a game takes this to the next level by replacing the heuristics with perfection.