Learn How to Spot a Mate in 2: Pin Tactic
This middlegame puzzle is a classic example of how a pin can turn into a forced mating net. The key idea is that one defender is tied to the king, so a seemingly natural defensive resource fails because it would expose the king to a direct attack. In positions like this, king safety matters more than material: even a large material edge can be irrelevant if the enemy king is boxed in and the pieces coordinate on the final squares.