Learn How to Exploit a Pin: Decisive Material Gain
This puzzle comes from the Queen's Gambit Declined and shows how a short tactical sequence can turn a quiet opening into a decisive material gain. The key idea is an opening pin that creates a major tactical weakness in Black's position. When a pinned piece cannot move freely, it can also expose the queen or king behind it, making the position vulnerable to a forcing combination. In classical chess, these patterns often arise from development and king safety rather than direct attacks.