Nice puzzle, I stared at my Pawn, then my Queen, then my King, then the two pawns in front of the King. I wondered whether I could get stalemated. Then I looked at the Queening square and thought rook? still stalemate .. bishop? .. no checkmate .. Knight! .. now since you know my fascinating thought process, you can publish it and become a Cognitive Psychologist.
Actually, there is a forced mate with promoting the pawn to a bishop; it just takes longer (mate in 5, see post 38).