Is there a time-cheat?

You have to turn them on in the Live chess settings. If you are on mobile there is a limit to one premove at a time, unless something recently changed. On the website, you can stack at least 5 moves; the help article says 5 but I think that changed and is more now.

https://support.chess.com/article/642-what-are-premoves-and-how-do-they-work

I would think if it happens with various opponents, then the issue lies with you. If it happens with one opponent, stop playing him.

You all still don't get it.

I see my opponent's time rolling back a few seconds again and again, while MY time keeps advancing.

e.g.

I have 15 seconds left and he has 3. His time counts down till 0.5 and suddenly jumps back to 3

and again, and again. This is not explained by connection problems. This is simply a cheat, or a bug at best. It happend not once, not twice, not ten times, not  twenty, ........

It absolutely is explained by connection issues and/or lag.

You make your move and your opponent's clock starts, however, your opponent hasn't received the move yet. They then make their move, but their clock is still counting down on your side because your client has not received the move yet. As soon as you receive the move from the server, your opponent's clock is modified to account for that transit time and any forgiven lag.

That is the way the site works and the official clocks are kept by the server and can't be hacked by your opponent.

https://support.chess.com/article/423-why-did-the-clock-times-suddenly-change-the-clocks-seem-broken

We all understand your complaint. There's at least one just like it every single day on the forums. The answer is in the post above.

I totally agree with the views of mr Mik_tal of Switzerland on time cheating during game. This happened with me also.

The explanation explains delays but not repeated back jumps, coming back to the same past time move after move. My time keeps going down till I loose.

No matter what excuse you give, it seems to me like Muslim excuses on mistakes in the Qura'n.

This actually sounds like an increment .  They premove (0.1) seconds, then have a second or two gets added to their time from whatever increment you are playing.  If they premove 10 times, they could go up to 9 or 19  or 49 seconds (or whatever the increment is) while you who are not premoving hit zero.  And if you are unaware of premoving (ala Optimissed), you will consider this some kind of time cheating.

I think premoves should be 0.5 seconds...0.3 for human reaction time and 0.2 to make the move (generous, really).

It literally explains the back jumps. So, are you just pretending not to understand?

You can also look at the game in the archive, it will show that there were no jumps unless it was an increment time control The client is not the official clock.

That is illogical.

When his time is down to 5 seconds, no premove or any function should bring it back to 20 seconds.

This is ridiculous.

By the way, I use premove too. So I know very well what it is.

Show one game where that happened. Not from the client perspective, since the client does not have the official clocks. If you have one, look at the game in the archive and you will see the official clock did not do that, just the client side was updated.

I won't say the client clock does not get bugged and displays the time incorrectly at times, especially during really quick move exchanges; that is certainly possible. But jumps in time are completely explained by lag, lag compensation, possible disconnects, and/or increment in conjunction with the the client code updating the clocks to the official times.

OMG that happens to me too its so annoying

One time my friend was spectating me in a 5 min game and he was just wondering why I only have 6 second but is going up,same thing like this happened so I have to explain to him that is lag and im only premoving so that I was able to use 5 second to beat my opponents 1 minute

Alternate Title: @Martin_Stahl repeating himself to an idiot for 30 posts

edit: *several idiots

haha lol

No matter how you try, premoving spares time but NEVER gets you backwards in time. 

That has ABSOLUTELY NOTHING to do with premove.

One more time, I see my opponent's time GOING BACK again and again. 

Premove DOES NOT AND WILL NOT get your time move back, then count normal a few seconds then move back then count normal a few seconds then move back then count normal a few seconds then move back then count normal a few seconds then move back until your opponent loses in time. This is a cheating bug that chess.com has committed in their software.

It should NEVER happen.

When you reach two seconds, there is no normal function of any kind that brings your time back to higher value.

THIS IS PURE CHEATING by chess.com software, and MUST be fixed.

No excuses accepted. PERIOD

Jumps in time due to lag do not happen like this. You see time frozen and suddenly jumps forward.

Like for example, you have 2 minutes left, it stays on 2 minutes for a moment and suddenly jumps to 54 seconds. This is a lag.

What I am saying is NOT like this. It reaches 2 seconds left and suddenly mounts up to 25 seconds, for example.

This is NOT due to lag. This is an intended increase. Try to understand what I am saying please.

What is really happening is that the opponents clock is stopped and is now your turn, but it looks like for you that his or her clock is still running because the opponents move hasnt gotten yet to your phone or computer.

That is what is really happening.