Regaining Material With Discovered Attacks Puzzle: Win — Discovered Attack
A discovered attack appears when one piece moves aside and reveals an attack from a rook, bishop, or queen behind it. In this position, Black can use that hidden line to challenge White's material advantage. The key idea combines a check with pressure on a trapped rook, turning White's active-looking pieces into tactical targets. This is a practical middlegame lesson: before defending an attacked piece, look for a forcing move that changes the geometry of the whole board.