Comments to the 'Knightmate' page state that Royal Knight and Queen can force mate against Royal Knight. It usually takes a Royal Knight and two of the weaker pieces (Rook, Bishop, Commoner) to force mate. [edit] This comment refers to Kings in this game that have lost their ability to move like Kings and now move like Knights.
This game prohibits a King from entering (or staying in) check. So as long as you move your Queen about the board like a Queen, it will affect your opponent's King like an Amazon.
This game prohibits a King from entering (or staying in) check. So as long as you move your Queen about the board like a Queen, it will affect your opponent's King like an Amazon.