I can't be beat by any machine if I don't play at all! :D

I wonder if GMs can tell if another player is a computer or not.

I think the cheaper ones have a tell-tale by following a shallow path into their moves tree. Deep enough to beat me but shallow enough to allow a good player to see something a tree search isn't deep enough to catch. I've watched Fritz 13 go down six or seven branches yet miss something that Chess.com caught. Grandmasters can, I'm told, beat Chess.com's AI the same way.

So, the Turing Test depends on the awareness of the "tester", don't you think?

I think Kasparov's "Complaint" did look like that to him. He certainly did play against chess programs before and knew what to look for. Even in the first games, he couldn't catch any of the known flaws but his prideful assumption that he COULDN'T be beat by a machine caused him to think that it was programmed specifically against him. Such is not the case. Generative Adversarial Network engines are game-concept oriented that search billions of scenarios to find solutions that are not tree based but success-pattern based. It's the nature of GAN's.

Sorry, I get yammering way too much if I discuss AI! Habit....