Queens Gambit Declined Semi Tarrasch Defense Puzzle (Rated 928): Win Material — Pin Tactic
This puzzle comes from the Queen's Gambit Declined and shows how a pin can turn an opening position into a winning material tactic. White’s queen is active, but it is also vulnerable because the black bishop can create pressure along the diagonal toward the king. In classical chess, a pin is especially powerful when it attacks a valuable piece that cannot move without exposing something even more important. Here, the tactic is not about a mating attack; it is about forcing a decisive material gain.