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How To Avoid Engine Users

@youngmonkey2299 You have a good point. We want to know whether we are playing humans or machines. Machine play is too precise to help us learn. I do not encounter many opponents who I think are cheating. They make mistakes; I make mistakes. For me, it would be a waste of my time and energy to try to discover who the cheaters are. Of course I'm playing on the bottom end of the table, so cheaters are less likely, and one would stand out like a sore thumb.
Some people here try to pretend they live in chess wonderland :D "I don't care if I'm playing a cheater, I'm so great, I don't get upset never, I'm a superior human being" Lol. So many role models...

The guy is only speaking to those that do not want to play against engines. Period. If you do not care (yes, I believe you), this post wasn't even for you.
At the end of the day, the only thing engine users have to reflect on is a number they never really earned. Be proud of what you can accomplish and don't worry about anyone else!
@Onyx_Chess That video... He opened with nice confessions from cheaters but it quickly went downhill. I'm not going to extend myself on this one: His main hypothesis is very unlikely to be true. It comes from someone that doesn't understand the basics of correlation/causation. If some corrupt politicians say "I only did it because I suspected everyone was doing it too", are you going to imediately assume that "being suspicious CAUSED them being corrupt". ?

The only real way to filter out potential cheaters is to only play with people you know are legit. In a certain rating range players will be paired up with the same guys over and over again.
That being said, I have had very few cheaters in the last couple of months compared to before. But unless we can get our hands on some statistics there is absolutely no reason to discuss the prevalence of cheaters online, every argument will be based on assumptions, perspectives and assumptions about other people's perception of your assumptions and that is very un-chess like.
My advice is "block and forget", any against any opponet where any strange stuff happens. Online rating means nothing, the only thing that matters is your fun while playing, getting annoyed is not fun.
Got an opponent who goes two pieces down in 20 moves and is 1min behind on the clock then starts to play super fast and super accurate defensive moves and flags you (likely an engine user)? Block. Time disapearing form your clock, moves not registering on a clock race muliple times against the same opponet while your connection is ace (probably a lag switch used by your opponent)?. Block. Opponent not resigning but letting the clock run down? Block. Insults in the chat? Block.
OP, how much time do you spend pre-screening all of your opponents?

What do you think your false positive and false negative rates are?

What do you think the underlying percentage of cheaters at your rating level is?

It's hard for me to imagine plausible answers to these questions that don't indicate that you're wasting your time.

If something weird happens in your game, block, report and move on.
@BrandrokID I only pre-screen for long time controls, and it takes me less than a minute. I'm not sure what you're asking for your second question, but for the third I would estimate around 5- 15 %, judging on the amount of players that would get banned before I used these filters. Of course I don't see nearly as much cheaters now. I didn't make this post as a way to complain about cheaters, but simply give advice to others for what has helped me filter them out.

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