Very easy.
Mate in 1
Sort:
Took me 4 sec.
I have only been playing chess for 3 months and I found that within 5 seconds.
ok ok ok, edited to include previous two moves. it was a little more hidden that way. 
Plz do not post that like puzzle. 3.Nd2 is not what I would consider in any variations that could be played. Puzzle mate in 2 or mate in 3 must be with best moves on side that lose the game.
Find the hidden mate. Kinda easy, but I overlooked it for 2 moves when this came up in a game! Keep your eyes peeled!
Note: This post has been editted to include the previous two moves. so, mate in three..... (sorry guys)