Lemming Defense Puzzle (Rated 1269): Win Material — Pin Tactic
This middlegame puzzle is a classic example of using a pin to win material. One piece is tied to a more valuable target, and that restriction creates a tactical chance to simplify the position in your favor. The key idea is that the defender cannot move freely because doing so would expose something more important. In practical play, these positions often arise when a queen is overloaded and a rook or bishop can exploit the alignment.