The computer here in "Play computer" is unrated. There is no time control. It allows takebacks. It gives hints.
You cannot rate such games.
You can play versus the rated computers in Live Chess.
Computer difficulty
Sort:
I understand it, but anyway with every computer level it's harder to win. I play with computer to get practice and I don't want to get any rating in such games. All I want is to compare computer difficulty with humans ratings to know my skill. For example, if I always win against computer 3, it's like I win against people with 1300-1400 rating. Of course, without hints and turn-backs.
There's no point in holding off on playing rated games versus computers or humans here. It's a good way of measuring your progress.
Well, with those caveats, people have previously estimated level 3 at about 800 strength, presumably for a game with a slower than blitz time control.
https://www.chess.com/forum/view/general/approximate-ratings-of-chess-com-computer-levels
For example,
Computer 1 = 1000-1200 rating
Computer 2 = 1200-1400 rating
Computer 3 = 1400-1600 rating
And so on...
Also I want to know how to compare computer difficulty to players ranks or titles,
For example,
Computer 8 = master candidate
Computer 9 = master
Computer 10 = grandmaster
And so on...
Thank you!