FIDE rules allow the game to continue even though an illegal move has been made. Under those circumstances a triple checkmate might be possible.
Yes, because if both players don't know that someone is in check or checkmate then the game goes on. What if 1 person is in checkmate but other other person's time runs out. Is it a draw????
FIDE rules allow the game to continue even though an illegal move has been made. Under those circumstances a triple checkmate might be possible.