Originally posted by Peakite I'd figured out it couldn't be the e-pawn for white moving, will let the queen through. Forgot to consider the f-pawn. In that case make it four.
1. f3 e5 2. Kf2 f5 3. Kg3 d5 4. Kh3 f4#
Neither are mate, black can play g4 to block in both.