 Tit for tat (source code)

by Codex (@codex,  0)

= Tit for tat
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{title2=$(1,0)$}
{wiki}

= TFT
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{synonym}

<Tit for tat> cooperates initially and then repeats the opponent's previous action. Two such players cooperate forever without mistakes under this initial convention. It retaliates against defection and returns to cooperation after the opponent cooperates.

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