A character is doomed no matter what he does, not because the other guy/force is pulling Xanatos gambit, but because they were too overconfident/stupid too see the results of their actions.
Not an immediate cause of failure, because they person still has some time to decide.
Named for the chess equivalent of a catch 22.
Not a Catch-22 where the person is just unlucky.
Devolves into Xanatos' forms as well (Zugzwang Roulette...)