Learn How to Win Material: Discovered Attack
This middlegame puzzle from the Vienna Game shows how a discovered attack can turn a seemingly active position into a decisive material win. The key idea is that one piece can move with tempo, exposing a stronger line of attack from another piece behind it. Here, the pressure on the king and the loose coordination of the enemy pieces create a tactical shot that wins material rather than relying on a mating net. It is a classic example of classical chess calculation meeting practical tactics.