July 19, 2007 - The journal Science publishes Schaeffer's team's article "Checkers Is Solved", presenting their proof that the best a player playing against Chinook can achieve is a draw.
Am 19. Juli 2007 veröffentlichte die Zeitschrift Science den Artikel von Schaeffers Team Checkers Is Solved, der bewies, dass das beste Resultat eines Gegners von Chinook nur unentschieden sein kann.