I think I figured it out - you make the white pawn into a knight then put it on b6. Then you have to keep making knights from promoted pawns and do the same trick all the way along until you reach the black king. Promote the g6 pawn to a queen and then checkmate.
RE: Chess Puzzle of the Day (Mar 1, 2022) | Problema de ajedrez del día (1-Mar-2022)