[ps256]

You need something more sophisticated, otherwise it's easy to confuse high skill and/or well memorised lines with cheating. And a good cheater will be smart enough to either use engine assistance only in difficult spots and/or frequently pick the second/third best moves from the engine.

[paulddraper]

I think the parent's idea is that over-the-board is harder to cheat; therefore you could look at the difference between OTB and online play.

[marcyb5st]

Correct. My idea is actually that with some grace number of moves that players can play by the book (i.e. openings). After that, run the analysis I mentioned. I agree that playing OTB is more stressful and that is difficult to model in such an approach. I was hoping to at least get some signal to filter out the mostly obvious cheaters and so focus on the remainder that should be less obvious.

[83457]

But otb is more stressful.