What is criteria for a draw?

I was ahead of my oponent in material and also had much more time on my clock.  His clock evetually ran out of time yet the game was declard a draw by the chess.com software because we were each given .5 after the game.  What is the exact criteria for a draw with this software? Maybe it's a universal rule for  every chess site, live and on online. I am just getting back into playing chess after taking many years off and I forgot many of the rules of the game.  I can tell you this for sure.  My opponent had more pieces that just a king.  So if his clock runs out before mine, I can not figure out how the game was considered a draw.  Thanks everyone for dealing with my ignorance.

BobbyD NYC

You probably had a situation in which even though you had more time, you also had "insufficient material to mate." 

To win on the clock the material you have needs to be enough to get a checkmate on your opponent.

For example if your opponent has a king and queen vs your king and he runs out of time the game will be called a draw. This is because a lone king can't mate.

But if in the same situation you had a king and a pawn you would be awarded the win because a king and pawn are sufficient to checkmate a king. So the trick is when your opponent is low on time hang on to your pawns.

Post a link to the game

i agree with titancg

I still am missing something. Let's say I had a King, Knight & Bishop and a pawn, and my oponent had a King and two pawns. And his clock ran out.   Given the fact that a pawn can advance and turn into a queen, I don't understand how a draw can be the outcome when oponents clock runs out. Plus, what is considered insufficent material not to be able to checkmate?  

EvgeniyZH suggested posting a link to the game. Is there a quick way for me to look up all my games. I only had 2 draws in the 300 games I have played in the last month since getting back into chess.  So is there a way to search by draws?   Thanks everyone for your time.

This was the game. http://www.chess.com/livechess/game?id=813151751

It wont be a draw if the side who still had time on the clock has a pawn. That's a win (or a loss for the person timing out).

http://www.chess.com/livechess/game?id=813151751

This is the game, you had no material, which is obviously insufficient material to mate.

Hi Megadroid and ScottrF.    First off, thanks for getting back to me so quickly. Secondly, how did you find the game?  I don't even know how to fing my own games  Also, I had another draw so how do we know which game it was.  But I see your point about me not having sufficiant material to have been able to chekmate my opponent. I have been play quite a lot of games and I was sure that the game with the draw I had more material than my opponent.  Or maybe I was completely wrong. So if I had any other piece, would it still be a draw.  If I had a pawn, I understand that the pawn can be promoted to a queen. What if I just had a knight or a bishop, does that still make the game a draw. I am just getting back into chess and I don't believe you can checkmate with a King and bishop or a king and knight.  Just trying to make sure I know all the rules for a draw.  Thanks again for taking your time to find the game and show me why that particuliar game was a draw.

The key is whether the person with time remaining on the clock can conceivably have a mating position.  As I understand it, it does not have to be a forced mate.  (Please correct me if I am wrong.)

For instance, a mating position can occur, with a blunder by a lone king, against two knights.