Learn How to Win: Discovered Check
This middlegame puzzle is all about a forcing discovered check that turns king safety into a decisive tactical weapon. When a line opens on the enemy king, the hidden piece can suddenly become the real attacker, often with tempo and material gain. Here, the position is already unstable because the black king is exposed and the white back rank is vulnerable to direct pressure. The key idea is to recognize how one forcing move can create a chain of checks and captures that collapses the defense.