play-chess-with-a-webcam VS irwin

I play one of those games that doesn’t strongly enforce anti-cheating, and I agree with you that it’s a huge detraction compared to games with strong anti-cheat.

But I strongly disagree about the use of invasive client-side anti-cheat. Server-side anti-cheat can reduce the number of cheaters to an acceptably low level.

See for example how lichess detects and aids in detection of cheaters: https://github.com/clarkerubber/irwin

And chess is a game where I feel like it would be relatively hard to detect cheating. An algorithm looking at games with actors moving in 3D space and responding to relative positions and actions of multiple other actors should have a great many more ways to detect cheating over the course of many games.

For Lichess, you can get some sort of idea from reading the code. If I remember correctly, there's some threshold for the site suspecting you of cheating based on a variety of simple metrics (accuracy, blurring, etc) and then it gets sent to machine learning tools to analyze (here is one of them, and here's another).

Lichess is open source. Here is their anti-cheating code on github: https://github.com/clarkerubber/irwin

Yeah Irwin is the old lichess model - here (https://github.com/clarkerubber/irwin) as well as the more maintained fork (https://github.com/lakinwecker/irwin/commits/master)

This is nonsense. They’re a free and open source nonprofit with no interest in commercial buyers. I’ve played on lichess for 3 years, over which time I’ve never encountered more than 1 cheater within 10 games (and normally much less than that). Because the website is open source, you can see the cheat detection they use. It’s not perfect — there is no perfect system — but it’s transparent and in my experience very good.

Isnt't lichess' cheat detection an ML based system?