Since this comic was published, the game of checkers has been solved:
July 19, 2007 - The journal Science publishes Schaeffer's team's article "Checkers Is Solved", presenting their proof that the best a player can achieve playing against a player with perfect information is a draw.
Since this comic was published, the game of checkers has been solved:
We've only got a few games left that the computers can't beat us at (fewer even since this was drawn)