of course they have
Has anyone beaten Computer 4 Impossible??

ok it might take few minutes but for now think about this: if no one beat computer ipossible, than y does his rating not be 3000+?

http://www.chess.com/livechess/game?id=598965424 and there is many many more

http://www.chess.com/livechess/game?id=598965424 and there is many many more
why did he drop a queeen
No as far as i know.