Australian Defense Puzzle (Rated 1055): Exploit Discovered Attack — Tactical Chess Puzzle with Theory & Hints

This puzzle is a classic discovered attack idea in the middlegame, where one piece moves with tempo and opens a line for a stronger attacker behind it. The key is that the opponent’s queen and king are both vulnerable to tactical pressure, so a forcing move can create a decisive material gain. In positions like this, active pieces and loose coordination matter more than raw material, especially when a pinned or trapped piece limits the defender’s options.