No idea, but it seems to be human nature to use dishonest methods to gain an advantage. I just play for fun so no need for dishonesty.
Why do people cheat on this site?

It is a shame that our world an website has descended to rampant cheating. It is, I agree, utterly pointless, and one has nothing to gain by cheating on an online chess site using another chess engine. I assume people do it to achieve a false image of prestige to other members. I recently faced a 700-rated player (I am about 1200) who played chess like the 2200-rated player who wreaked havoc on my structure with his pawns and knights. Clear example of cheating. My rating was affected by this. Chess.com supposedly has software that detects computer-y play styles, and blocks the accounts of those who are caught cheating. Thank you, A_G_A, for addressing this prevalent and controversial issue in a expletive-free and diplomatic manner, compared to others who have posted about the topic.

YES YES YES I have been cheated here as well... plenty of times. What is strange is that on my level this should just not be. I mean why cheat every now and then against players of my caliber. How do I know I've been cheated... pretty much as the post above stated by A-J-S.
Chess.com can say whatever they want to but I think it’s just a PR thing. I don't think they have any sure way to actually detect cheating.
But it hurt no one really... I mean - yeah I lose a game here and there but losing to a machine matter none and at the end of the day the cheater still gets to go in shower looking down and cry at the ... well you know what I mean (being a friendly site and all don't want to get so discretional)
I recently faced a 700-rated player (I am about 1200) who played chess like the 2200-rated player who wreaked havoc on my structure with his pawns and knights. Clear example of cheating. My rating was affected by this.
Look, he didn't cheat. If someone cheated at all they wouldn't be 700. It takes less effort to be rated over 1000 the honest way than it does to cheat.
Another thing to consider is that a 1200 rated player wouldn't be able to play as 2200 rated quality. If you could understand the difference between a 700 player and a 2200 player you wouldn't be less than 1200 rated.
Your story doesn't check out. Maybe try analysing your mistakes when you lose instead of accusing people of cheating?

I recently faced a 700-rated player (I am about 1200) who played chess like the 2200-rated player who wreaked havoc on my structure with his pawns and knights. Clear example of cheating. My rating was affected by this.
Look, he didn't cheat. If someone cheated at all they wouldn't be 700. It takes less effort to be rated over 1000 the honest way than it does to cheat.
Another thing to consider is that a 1200 rated player wouldn't be able to play as 2200 rated quality. If you could understand the difference between a 700 player and a 2200 player you wouldn't be less than 1200 rated.
Your story doesn't check out. Maybe try analysing your mistakes when you lose instead of accusing people of cheating?
I think you misunderstood my post. I never said anything about a 1200-rated player playing at the level of a 2200-rated player. This 700-rated player may or may not have been cheating, but the differential between his/her playing level and that of other, much higher-rated people seemed amiss. Understand the comment before making accusatory responses.
I meant to write that a 1200 player wouldn't be able to rate play as 2200 quality.
You wouldn't be able to understand the difference between 1500 and 2200 play. If you understood it you would be able to play like it. At your level the game is simply tactical blunder after tacitical blunder until checkmate. These blunders are solely what decide the game even past my rating.
The 700 played like a 700 and that was enough to beat you in a game because of the huge variance in results that large amounts of tactical blunders cause.

I meant to write that a 1200 player wouldn't be able to rate play as 2200 quality.
You wouldn't be able to understand the difference between 1500 and 2200 play. If you understood it you would be able to play like it. At your level the game is simply tactical blunder after tacitical blunder until checkmate. These blunders are solely what decide the game even past my rating.
The 700 played like a 700 and that was enough to beat you in a game because of the huge variance in results that large amounts of tactical blunders cause.
Why don't we agree to disagree.

The reason they cheat is "BECAUSE THEY CAN"
DENVER
I suppose that's true. It's not like chess.com's alleged "cheater detector software" can catch every computer-generated move.

I meant to write that a 1200 player wouldn't be able to rate play as 2200 quality.
You wouldn't be able to understand the difference between 1500 and 2200 play. If you understood it you would be able to play like it. At your level the game is simply tactical blunder after tacitical blunder until checkmate. These blunders are solely what decide the game even past my rating.
The 700 played like a 700 and that was enough to beat you in a game because of the huge variance in results that large amounts of tactical blunders cause.
not true. you don't have to be able to actually play like a 2200 rated player to merely comprehend or understand the vast difference between what goes on in amateur games and what goes on in games between players above 2200 elo. all you have to do to fully appreciate and understand this difference is research a bit, read some chess books; it all becomes rather clear rather quickly.
There is a website where you can play relatively safe from cheaters. It is the International Chess Club (ICC) in their no chess engines section.
I have beaten IM and Gm , senior masters at speed in person all my life. but on this site I have tried to move when it is my move in a won position and I can;t why because somehow i have been disconnected or it is move and i have been disconnected. six games in row tonight
Cheating on this site is utterly preposterous. The point of chess is to have fun, right? What fun is just entering computer moves into an online chess game? Is the purpous just to raise a meaningless online rating? Chess can raise self-esteem, but winning by cheating does not benefit it in any way.
Cheating is rare at my caliber, but I have heard that it is relatively common at high levels. People who have worked hard to get a high rating can be taken down effortlessly by a cheater with an engine. That is no fun.
So, why do people cheat on chess.com? Feel free to share your thoughts and opinions.