Hard Chess Problem! please help...

Hello everyone,

I have encountered a very hard chess problem.

in the diagram below, Black moves first and should help white checkmate in 2 moves. I mean, the moves order is like this: Black moves, then White moves, then Black again, then White (checkmate)

Both players should make all efforts to make White win.

P.S: there are two solutions for this problem.

(I didn't find even one of them yet, even though I was thinking about it a few hours).

if someone solves this problem, please reply.
Thanks.

I think i have one of the solutions,

Black 1; Bishop at top of board moves down and to the right by 1 square.

White 2; Knight moves right 1 and up 3.

Black 3; Queen moves down 1.

White 4; Queen moves up to the top, Checkmate!