How about King b5 then King c5 then Knight c4 then Knight a5 then Knight c6 check (assuming his King is still at b8).
1) Then if Bishop takes Knight, King takes Bishop and his King moves to a8 or c8 followed by pawn b7 check. You might be able to promote and mate if carefull not to draw again.
2) If instead black King a6, then pawn b7 check and pawn b8 (Queen promotion) check supported by Knight.
3) If black King a8, then King d6, King c7, pawn b7 check, black King a7, pawn b8 (Queen) with check and checkmate to follow.
I think this would work. What do you think?
Regards, Duane

Here's a game that I just finished that ended in a draw. I was up a couple of pawns a few times, but they were disconnected and seemingly hung out to dry... but I had a pawn and a knight to his bishop in the end game and I couldn't figure out how to get the pawn to be promoted!