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Deadlock (game theory)
In game theory, Deadlock is a game where the action that is mutually most beneficial is also dominant. (An example payoff matrix for Deadlock is pictured to the right.) This provides a contrast to the Prisoner's Dilemma where the mutually most beneficial action is dominated. This makes Deadlock of rather less interest, since there is no conflict between self-interest and mutual benefit. The game provides some interest, however, since one has some motivation to encourage one's opponent to play a dominated strategy.
== General definition ==
Any game that satisfies the following two conditions constitutes a Deadlock game: (1) e>g>a>c and (2) d>h>b>f. These conditions require that ''d'' and ''D'' be dominant. (''d'', ''D'') be of mutual benefit, and that one prefer one's opponent play ''c'' rather than ''d''.
Like the Prisoner's Dilemma, this game has one unique Nash equilibrium: (''d'', ''D'').
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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