I was playing chess with a buddy, and I put him in check. On the following move, without moving his king out of check, he moved a rook to put me in checkmate.
My questions are as follows:
Can he do that and leave his king still in check?
Even though I'm in checkmate, can I take his king to win the game?
Is checkmate an automatic win (meaning no moves can follow), or can I still "try"?
If it was an illegal move, where do we resume?