Nimzo Indian Defense Reshevsky Variation Puzzle (Rated 1298): Win Material — Decisive Middlegame Tactic

This puzzle is a classic middlegame example of converting activity into a decisive material gain. White’s king is safe, but Black’s king shelter is weakened, and the key is to use forcing play against the most active defender. The position features a strong skewer motif: a valuable piece is lined up in front of a more important target, so a tactical exchange can collapse the defense and leave Black unable to keep everything protected.