amazing tricky position

so this position is from a game i played once, its really tricky and requires lots of calculations :D, try it out yourself :

white is preparing to pin the black queen to its king, more importantly, if the queen shall leave the backrank white replies with Ra8+, after Bf1 Qd8 for a mate in one...what can black do??????

yeah, I think 11.Nc3 =0

simple Qc2 and to mate

In the mainline above: 6. - Rf5 is already checkmate (instead of 6. - Qh2+)

oops so sorry, theere a mistake in the diagram, move 10 is Rb2+ and mate

@Huruman  oh yeah missed, well there's always a mistake in a combination ;p

:)

But very nice first move all the same!

Nice! Would have been even better if you had finished it though.

11. Nc3 Qc2#