Learn How to Use a Discovered Attack: Decisive Material Gain
This puzzle highlights a classic discovered attack idea in a sharp middlegame/endgame transition. One piece is doing double duty: it is both active on the board and also masking a stronger threat behind it. When that blocker is removed, the hidden attacker becomes decisive, and the position collapses through tactical pressure and material loss. The key lesson is that active pieces near the enemy king can create threats even when they seem temporarily loose.