A doubt with time...

Hi everyone, excuse me if this has already been asked, but I'm still new and it's the first time I post here.

I usually play live chess, and I really enjoy it, but a few times I've realized something strange at the end of the game. The fact is that when the opponent gets to the final of his controul-time, I can see that there's only 1 sec. left and the next move he has 3 or 4 sec, when, actually, he sould be already out of time.

This has happened to me maybe 4 or 5 times, not many, I know, but it bothers me, seeing that I'm about to win a game because of the time, and when the opponent is about to finish his time, for no reason, he gets "extra" time, and, by chance, I happen to be about to consume my time too, and I lose.

I don't know if that's normal or not, if somebody could help me I would be extremely grateful.

Thank you very much

p.d. sorry for my bad English!

getting extra time? you must be playing with increments. every you make a move , a specified time increment is added to your clock, an example here is you're playing blitz with 5:3 time control. before you move, 3 seconds is added to your clock.

What a mistake, I forgot to tell that (obviously) I do not play with extra time, that's the problem!

Thanks for answering Tatiana92!

Thank you very much for the explanation Schachgeek!

It's been really useful for me, I also believe it can be a problem with the router settings (hardly, cause I've never ever had a problem before) or the live server. Besides, it's a little bit strange the fact that only occurs here, isn't it?

Anyway, this is only a game and 'm not gonna worry about that particular thing!

See you soon.

It's because of lag on yours and your opponent's internet connection. I see that very often when people run out. Also, he can be using "pre-moves", so that the next 5 moves can be played out in no time - see your own settings for pre-moves if you want to use that.