Learn How to Win a Pin: Decisive Material Gain
This middlegame puzzle is built around a powerful pin that turns into a winning tactical sequence. The key idea is that one piece is restricted by the alignment of the king, queen, or another valuable target, so a seemingly active position can collapse quickly. Here, the side to move can exploit the pin to force simplification and come out with a decisive material edge. It is a classic example of how piece activity and tactical pressure can outweigh equal material.