Learn How to Use a Pin: Middlegame Tactics
This middlegame puzzle shows how a pin can turn a small tactical detail into a decisive gain. One piece is tied to a more valuable target, so a seemingly active position can collapse once the pinned piece is challenged. In classical chess, these moments often arise when development and space create pressure on key squares. The best move is usually the one that keeps the pin alive while forcing the opponent into a losing capture sequence.