Consider the following simultaneous move game (called "Chicken") played by two teenagers Al and Bill. Al drives his sports car south down a one-lane road, and Bill drives his car north along the same road. Each has two strategies: Stay or Swerve. If one player chooses Swerve he loses face; if both Swerve, they both lose face. However, if both choose Stay, they get crashed with both being seriously injured. The payoff matrix for this game is as follows