The exists only one unique solution to this problem. Here is how to solve it-

Draw an arrow moving away from every piece, towards all pieces that the piece can kill. After you are done drawing a the complete network of arrows, connect them in head to tail basis, starting from the knight and ending at the king. There‚Äč will be clues within on how to proceed, like the pawn can kill only the king, so it must kill the king, etc.