Help with CHESS rules?

I been playing chess on freegamesscout.com for years, this game i only against computer. I beat computer 100`s of times, but one odd thing is, when I corner the black king into black corner and check mate it, it tells me that it`s a PAT, not checkmate.This happens only in this situation. Not being expert at chess rules is this a true/valid chess rule? or is this game programed out of whack?-I have never heard of this rule-but I am not en expert at chess rules, any experts out there?Help with CHESS rules?
"Maybe it would be clearer if I ask like this: Is there ANY situation on chess board when black king is checkmated, that he can claim a pat/draw?.."



The answer to that is no. If he is checkmated, he loses.



The big question is, was he actually checkmated. If he was not in check but had no legal moves, that is a stalemate, and it would be a tie. But if he actually was checkmated, maybe there was a bug in the program. It wouldn't be the first time.
Never heard of PAT, but perhaps its a stalemate, are you sure you are checking the king? Stalemates can be common in the corners of the board so you must be sure that unless you know you are about to checkmate him, that there is at least one space in which the opposing king can move.Help with CHESS rules?
When put the enemy king to a corner you have be careful NOT to concede a draw. When the enemy king is NOT checkmated but has no squares to go to it is a draw, that is what is happening. Forget about the word pat, in pro chess this is a stalemate.
there are checkmates %26amp; stalemates.....what YOU are getting is a stalemate (draw)



http://www.youtube.com/watch?v=4SMfknyjP鈥?/a>Help with CHESS rules?
You only get 1 point for the PAT, unless you go for 2.
never heard of PAT
In chess a 'draw' results from 1) an agreement by the players, usually after a minimum number of moves; 2) a stalemate caused by a (i) lack of sufficient material by either player to checkmate the other, or by (ii) a position in which a player is not in check and has no legal move, or 3) by a position which is repeated 3 times, or 4) by a series of 50 moves without a capture or pawn move. It is the 2.ii. situation I think you may be looking at. If you're playing White and the Black king is not in check on Black's move, but any move Black makes will put his king in check, that is a stalemate situation.



You must be cautious when your opponent has very few moves available, NOT to put him in such a position that his king is "surrounded" by check without being IN check on his move. A classic example position: W king A6, W pawn A7, B king A8; Black to move. There is no legal move for Black, and his king is not in check; this is a stalemate.



I don't know why your computer game calls the situation a PAT. Does this stand for "Position of Automatic Tie"? That would be another way to think of a stalemate--an automatic tie.