Vienna Game Max Lange Defense Puzzle (Rated 847): Fork — Win a Rook

The knight is the most deceptive forker in chess: its L-shaped geometry attacks squares no other piece reaches. In this middlegame, Black's tactical opportunity arrives through a forcing knight leap — a checking fork that also targets a valuable, undefended piece. Because check must be answered, the defender never escapes the second attack. Although White holds an extra pawn in the static material count, piece activity overrules totals here. One forcing blow converts a quiet-looking position into a decisive material gain.