What if white moves the king to e1 instead of c1?  There's nothing keeping white from doing that, and then it's not a mate.  You could tweak it by having black with a bishop on a6, then that would cover the f1 square that's the king's escape route (if he goes e1).  Then it follows Nf2+, Ke1, Nxc2++

..ke1 2-Nc2..Kf1  then waht? I am sure a better player will find a way but it does not have to be mate in two.. Honestly I see a drw possible with this board the way it is.