"The game is drawn when a position is reached from which a checkmate cannot occur by any possible series of legal moves."
For example after after 1. Kf1-h2 2. Ke1-h8=Q black is able to give you a mate. This is what that rule means. It does not have to be forced, it has to be possible.
Fair enough. For now on I'll just play games with a minium of 1 second increment.
There's no way you should lose that position with 10 whole seconds. You can premove Kh1 and Kg1 and Kh1.. etc. The only way for the opponent to prevent these from being legal moves is either to stalemate you, or to bring the K around the f file to deny Kg1 - but that just loses the pawn.
Some of us don't use premove :-P
Although in OTB play, you can stop the clocks and fetch a director to claim the draw--if your opponent does not concede that the position is drawn, your remaining time is halved and you get a delay (5 seconds is minimum, I think) which should be more than enough to secure the draw.
Some of us don't use premove :-P
You're only hurting yourself by not using it. The feature is built into your client. Think of it as a way to compensate for the fact that OTB you can see where the opponent has moved a second or so before your timer begins, and online you cannot.
Here's a quote from the laws of chess by fide http://www.fide.com/FIDE/handbook/LawsOfChess.pdf
"The game is drawn when a position is reached from which a checkmate cannot occur by any possible series of legal moves. THIS IMMEDIATELY ENDS THE GAME, provided that the move producing this position was legal"
Here's the game with the drawing position I got into with about 10 seconds on the clock. I lost on time. I could be misunderstanding the rule, or maybe chess.com just makes their own rules. If that's the case than just ignore me. He just danced his king around while my clock ran to zero.