Learn How to Win Material: Discovered Attack
This puzzle comes from the Nimzo-Larsen Attack and shows how a single tactical trigger can flip a middlegame. The key idea is a discovered attack: one piece moves with tempo, opening a line for another attacker and exposing a vulnerable queen-side target. Here, the position is not about slow maneuvering but about forcing a sequence that wins material and leaves White unable to keep the balance. It is a classic example of tactical refutation in a practical opening position.