Learn How to Win Material: Defensive Move
This middlegame puzzle is about using a defensive move to keep your king safe while turning the opponent’s active bishop into a tactical target. White’s bishop on a4 creates strong pressure along the diagonal, and Black’s queenside pieces are awkwardly placed. The key idea is that a calm pawn move can improve the position, restrict counterplay, and set up a forcing check that exploits the pinned pawn structure and exposed king.