Which strategy for punishing cheating has consistently been the winning strategy in tournaments pitting decision strategies against one another?

Question

Quizplus · Accepted Answer

Tit-for-tat is the most successful decision strategy in tournaments where players compete in repeated games of prisoner's dilemma. Tit-for-tat begins with cooperation and then simply mimics the previous move of the opponent. This means if the opponent cooperates, tit-for-tat will cooperate, and if the opponent cheats, tit-for-tat will also cheat in response.

Which Strategy for Punishing Cheating Has Consistently Been the Winning