Learn How to Win Material: Discovered Attack
This middlegame puzzle comes from the English Opening and shows how a tactical refutation can turn a normal-looking position into a decisive material gain. The key idea is a discovered attack: one piece moves with tempo, opening a line for another attacker and exposing a loose defender. Here, the position is especially tactical because a pinned knight and an overloaded back rank make the opponent vulnerable to a forcing sequence that wins material rather than chasing a direct mate.