I just played a game where i checkmated on the 4th move. We opened into Petrovs defense classical, damiano variation and on my third move i went for checkmate with Queen f3 and then if black does not see it then its checkmate with Queen f7. Just wondering if this checkmate is called anything? It should be quite easy to use against New players since its a copying of moves and black will try ti defend the knight instead of the king