Yep, the original Turing test is adversarial: There's a computer subject trying to act human, a human subject trying to act human, and an examiner trying to tel

Yep, the original Turing test is adversarial: There's a computer subject trying to act human, a human subject trying to act human, and an examiner trying to tell which of the subjects is the human. If there exists an examiner which can distinguish the subjects with probability non-negligibly different from 0.5, then the computer fails the test.