"i have rarely seen this b4 .----- "
Off topic, but I doubt you've ever seen it before. That position is impossible since Black's only legal last move was Kb8-a8 and in that situation the pawn can't be at a7 (if it was, Black would have been in check from the pawn after the move before as well, which is illegal). It's not important, but I just found your choice of words coupled with the position somewhat ironic and thought others may find it funny as well.
but its whites move mate in one
what about 2 knights + king vs. King -
That´s a draw, except for under special conditions.