Missing Checkmate and losing

I was watching a Live Chess tournament and couldn't believe my eyes when a missed checkmate flashed past in the game. (Admittedly, it was a 1min game).

The player who could have mated then went onto lose on time.

Upon rechecking the game, sure enough, 20. Qf8#.

Are there other instances of Master level games, or your own games where a mate is missed and the player goes onto lose?

http://www.chess.com/livechess/game?id=556079619

That's amazing.  Probably frustrating if the guy saw that afterwards.

Another game between the two players started immediately after, so they probably didn't notice.I also left a comment on the game, but I'm not sure if the players get notified.

Typical SupremeOverlord.

I will show you a game after todays round of the swedish chess championship in which a 1979 missed a mate in 3 combination after finding the first move. And this was a 90min +30 sec increment and after 40 moves another 30 min.
So yeah, this isn't a typical noob thing. Wasn't it Kramnik that missed mate in one? Ivanchuck did it in a blitz game aswell right? 

This is Ivanchuck missing mate in 1 against Anand.

The announcers are very enthusiastic and make these games fun to watch.

https://www.youtube.com/watch?v=-5YKoL4QKic

What about missing Mate-in-2. I imagine this is very common at lower levels.

I've occasionally had games where I found checkmates after the game.

But the most frustrating ones are when I'm certain there is a mate, can't find it then find out that it was possible.

I was watching a game at my club, where a mate in one was missed.  The player then went onto be checkmated.