I reached this position in one of my games and after I found out I had mate in 3 here, this position looked just like it was composed. I played ...Be1 here, putting my opponent into zugzwang (capturing g-pawn right-away would be stalemate). Can you find mate in 3?

1.... Bg8 2 f4 gxf4 3 g5 fxg5# (Using the coordinates given)

or

1.... Bg1 2 f5 gxf5 3 g4 fxg4#  (assuming Black is playing up the board and ignoring the coordinates featured on the edge of the board)

(You seem to have set the board up badly)

Yep, that is correct. It's that typical stalemate idea, that forces opponent to move his pawn en prise. I think I have only seen this in compositions, maybe in a famous game or two.

I will change the coordinates, thanks for pointing it out.