Dory Defense Puzzle (Rated 991): Win the Pin — Decisive Material Gain

This middlegame puzzle is built around a powerful pin on the queen that turns into a decisive material win. White’s active bishop creates immediate pressure on the black queen and the king behind it, forcing a tactical response. The key idea is that a pinned piece often becomes overloaded: if it moves, something more valuable is lost. In positions like this, tactical accuracy matters more than long-term strategy, because the pin can convert a small initiative into a large material advantage.