I thought of this too, but it really should play C then D to start so it cooperates against itself—otherwise, it will defect against itself.
Given the payoff matrix for this tournament, it isn’t a very good strategy. However, if the payoff matrix rewarded D-C more strongly, then a pair of (tit-for-tat, tit-for-tat’s complement) would do very well.
I thought of this too, but it really should play C then D to start so it cooperates against itself—otherwise, it will defect against itself.
Given the payoff matrix for this tournament, it isn’t a very good strategy. However, if the payoff matrix rewarded D-C more strongly, then a pair of (tit-for-tat, tit-for-tat’s complement) would do very well.