Andor Lilienthal (White) Puzzle: Fork — Win Material
A knight fork is especially powerful in the chess endgame because one forcing move can attack the king while creating a second threat against valuable material. Here, Black’s rook is exposed and the centralized king is vulnerable to a knight check. The key idea is to use tempo: force the king to respond, then exploit the rook’s lack of safe squares. This is a winning combination based on a hanging piece, a trapped rook, and accurate knight activity.