Learn How to Win Material: Fork Tactic
This middlegame puzzle comes from the Pseudo Queen's Indian Defense and shows a classic tactical refutation based on piece activity and king safety. White can exploit an overextended black knight and the loose coordination around Black's king to win material. The key idea is that a forcing capture opens lines, creates a fork, and leaves Black unable to keep all of the attacked pieces protected at once. It is a practical example of how a small tactical shot can overturn a large material deficit.