There's something strange about this puzzle...

Black to move: Checkmate!

White to move: STALEMATE!

Black to move: please solve

Broken Castle? No... It's not that...

Only a white king or is the position impossible

Okay... Fine :D
...Nb4; Nf4; Ne7; Nc7
all mate.

Well, there are a few other reasons 

Nb4 Kxd6; Nf4 Kxd6; Ne7 Kxd6; Nc7 Kxd6

Holy shadoodles! It's too late for this!

I can only find mate in three moves. Please enlighten me.

1. Nf8 Kxd6 2. Be7+ Kd5 3. Be6#

congratulations y2721!

Its mate in 2 starting with ...Rd8!!; Kxd6 Bc8 mate!