Help white to win this in 9 moves:

Use "move list" for alternative moves, and tablebase ( http://www.gmchess.com/endgames/ ) if you wanna go deeper

Very nice, I like Bishop underpromotion, very rare.

Interesting

What happend if d8N followed by Bd7 ?
The answer can you find here:

So why the underpromotion to bishop when you can achieve the same thing with a queen? Is this having the assumption you are going to win so may as well practice getting a mate with a bishop instead?

I think you need to look at the position a little closer, luckygunn...

queen or rook promote is stalemate obviously

Very nice. Great harmony of knight and bishop.

Brilliant underpromotion position!