Delays nothing.  You've removed one defender of f6 by that move.  White can now take on f6 with both rooks to mate by move 4.

Nf5+

67th! Yipee!!

good one!

nice

Fourth page.....YES!!!!!!!!!!!

Nice Rook and Queen play.

something realistic and a good one...

Good stuff!

okay,...  not Bad

Mighty fine.  

I did it

quite the nine eyes witchy woman

Got it.

Mate in 6, I think:

2 ... Nf2+

You dont know how to pay attention.  You've removed a defender of f6, and after white takes back R1xf2, you can't stop mate-in-2

good one..

gud one

one wrong