i like move two or type of moves like this, when greed won´t lead to the right solution.

Greed leads to a mate in 5 (my first try). And yes, I'm too surprised with the low percentage solve rate.

A nickle says folks are looking for the queen sac.  

(Surprised me too, but in fairness there is a lot going on here. A nice puzzle, though since it varies already from the game on which it is based, it would have been nice for the designer to remove some of the extraneous pieces.)

I have to admit, greed got me every time, it's too tempting, I kept sensing danger all around

I gave this two stars, the lowest I give a puzzle that's not a Philidor's mate or some other dead-obvious, mindless puzzle.

Then I saw the solve rate. The way many people solve puzzles, by playing checking moves, works here. The key is to recognise that the goal of chess is to kill the king, not the Queen. Once that goal is firmly in place, 2.Bd6(check) becomes pretty obvious.

I'm quite surprised the solve rate for this is substantially lower than some of the more difficult puzzles we had recently. I haven't checked, but I'm guessing more people may have tried this puzzle than some of the others.

Easy puzzle but my first response was RxE7, Bx E7, QxB checkmate in 2, but then i realised that in response to RxE7 there were multiple ways black could prolong the eventual checkmate by harrassing the white king

I agree with phylloscopus. After Bf2x, Rg2x, Qf3x, and c5, it takes more than 5 moves to get to mate after Re7x