Check mate un noticed?

Has a check mate actualy gone unoticed and then called later?

Not in any of my games.

yeah, when i was a kid and playing with my family, i can't imagine anything that stupid would go on in any grandmaster games though.

Almost certainly, strange stuff happens in the novice sections. At a tournament recently, I noticed two kids playing without Kings (they'd been captured). When I pointed this out, the arbiter rushed over and gave me a volley in French. I don't speak French very well, so I'm guessing that he was telling me off for interfering.

 Thankyou For answearing my question because on tv i saw it happen!

 p.s: I can talk in french!

I think I read about a case where this was found out when the moves were entered into a computer afterwards. As checkmate ends the game (whether it is noticed or not) under FIDE rules, this changed the result of the game.

I guess they went to a tourny without learning the rules first. Odd... 

of course in the 4 years I have been in a chess club I have been to a lot of tournaments OTB...some times 3 times a week including team matches.

I had one game where I did not notice that I had checked my opponent and he turn the game but if I had noticed the check I would have won.

in another tournament two players agreed to a draw but after they agreed to draw it turned out the other player had checkmated the other. but the international arbiter ruled it to be a draw since they agreed to draw. both players did not see the mate.

I think I read on here in that some people play the game in the manner that if a player doesn't notice his king is in check and doesn't remove the check, then the other player can capture his king and win the game.

actually it is only legal to capture the king in games 10 minutes or shorter.

however the chess handbook says that making a illegal move loses. actually you lose before the opponent takes the king.

That's why you have to say "check" ... :D

you don't have to say check anymore.

Under FIDE rules it's not legal to capture the king ever -- capturing the king is itself an illegal move that can cost you the game. What you do is stop the clock and claim a win because of illegal move.

Capturing the king used to be legal but it was changed I think about 10 years ago. It led to too many disputes that were impossible to work out for arbiters.

I guess since 10 minutes games are always unrated ( no official rating exist). many clubs keep playing with the old rules since capturing the king is kind of fun. it is fun to see the look on the opponent then he discovers that the king is captured.

In my club we play by the old rules no need to change. However if it was FIDE rated it would be something else.

I am trying to advocate for a official 10 and 25 minutes rating. with the help of computers it should be possible.

Actually, illegal moves are normally just corrected.  They don't result in an automatic win (although, touch-move is still in effect, so you may end up having to play an extremely bad move if you're unlucky.)  And if no players notices the illegal move for more than 10 moves, it stands.

In the US, you have USCF rules and only use FIDE rules when there's FIDE rating involved.

In Europe, the FIDE rules are just "the rules of chess". In all blitz tournaments I've played in for years, taking the king wasn't allowed.

Yeah, I never knew taking the king was allowed lol, if that is true that's insane. Surely if someone makes an illegal move they have to take it back? then again i've only played in a chess club when i was a kid, and not as an adult.

It depends. In blitz, you lose the game, in slow chess you take it back and have to make another move with the touched piece. And the opponent gets 2 minutes extra time, if you're playing extremely seriously...

According to the USCF blitz rules, an illegal move results in having 2 minutes added to your opponent's remaining time.  There is, however, a listed variation of the rule in which you lose.