First one to find the correct move and why it works gets a trophy! :D

(From one of my recent games, black to move and force mate)

Sorry adam that is not the correct answer. I would explain why, but I'm not giving any hints.

And please no engines that would spoil the fun :)

What about the rook?

rook where?

I first thought a Queen sac would do it because of the rook on g6.

your line wins, but does not force mate, as he does not have to take

wrong again adam :P

Do I have to get all the moves or just the first one?

you have to get the first move and explain why it works. When someone fills that criteria, I will post all lines showing how it forces a mate.

Here is a hint: it forces a mate in 7

I thought you said you weren't giving any hints?

Qxh3

I can change the rules :P
and why Qxh3? 

good job Horatio you win!

It appeared in a recent game, and I won it. I put it into the computer after the game to learn that there is no way black can escape! I dont need to post the lines here because you did. Good job!

you deleted your comment :(

is this what Horatio posted, or is this refuted?

Edit: I forgot to add a bishop check to prolong the mate. Also, I did not see Kh2 till later and that is why it is not the main line.

yup nate that is right!

here are all the lines I could find

I got Nh4+. Did I have to get the reasons and moves right as well?