The third payoff would show Holmes and Moriarty both being rewarded if they succeed in getting off at the same station, but Holmes gaining more if both he and Moriarty get off at one particular station, Moriarty gaining more if both get off at some other particular station, both losing unless they get off at the same station. This is the usual nonzero-sum game, or “imperfect-correlation-of-preferences” game. This is the mixture of conflict and mutual dependence that epitomizes bargaining situations.

Thomas C. Schelling, The Strategy of Conflict, loc. 213