A cool problem by Godfrey Heathcote I didn't get a thought of a better title :)

I am trying to solve a problem which is white to move and mate in 2 moves.

To be frank, I am not asking all problems here. On my own I solved more than 50 and stuck up in nearly 15 (don't worry I will not ask all here itself, I am still trying to solve them)

[FEN "8/qQ5p/3pN2K/3pp1R/4k/7N/1b1PP/8 w - - 0 1"]
1.Nd4! threatening 2.Rg4#

1...Kxd4 2.Qb4#

1...Bxd4 2.Qb1#

1...Qxd4 2.Qxh7#

2...exd4 2.Qxd5#