User:The Master of Hedgehogs/Fairy piece puzzle 2/Solution

Here's how to solve this puzzle.

Step One
Promote your pawn to either a queen, a rook, or a chancellor. By promoting to a piece that moves orthogonally, Black is now in check. They have no moves, except for Nd8 or Nf8.

Step Two
Capture the knight, regardless of whether it's on d8 or f8.