Polish Opening Birmingham Gambit Puzzle (Rated 1406): Win Material — Decisive Middlegame Tactics

This puzzle is a classic middlegame example of tactical refutation: one active piece is overloaded, and a pinned defender makes the position vulnerable to a forcing sequence. White can exploit the loose bishop and the pressure on the center to win material while simplifying into a favorable ending. The key idea is not a flashy attack, but a clean sequence that removes the opponent’s best active piece and leaves White with the better minor-piece balance.