Regaining Material With Discovered Attacks Puzzle: X-Ray Attack — Material
A discovered attack occurs when one piece moves away and reveals a line of attack from another piece behind it. This tactical idea is especially powerful when the revealed attack targets an undefended major or minor piece. Here, White’s active bishop is blocking the queen’s line toward a loose bishop. By moving the bishop with tempo, White creates a dual threat: the first piece changes the tactical balance while the hidden attacker wins back material.