Stonewall Attack Puzzle (Rated 1263): Win Material — Tactical Refutation

This middlegame puzzle comes from a Queen’s Pawn Game structure where activity matters more than raw material count. White’s pieces are active and the queen and knight coordinate against loose targets, but Black has a strong tactical resource based on forcing moves and king safety. The key idea is to notice when an apparently active piece is actually vulnerable to a direct tactical sequence that wins time, removes defenders, and simplifies into a favorable position for the side with the initiative.