It is said that modern chess sites can indentify when someone is playing with the help of a bot or mirroring plays from a mirror match in another site, but how? What does the computer do that professional chess players can’t do?

Question

It is said that modern chess sites can indentify when someone is playing with the help of a bot or mirroring plays from a mirror match in another site, but how? What does the computer do that professional chess players can’t do?

In: Other

Answer 1

They have big datasets of games from a bunch of big chess engines. They break them down into common situations and check your moves against them then assume you matching up with a chess engine sometimes is fine, but if you are matching up nearly 100% of the time you probably are cheating.