Learn How to Spot a Mate in 1: King Safety
This middlegame puzzle is a pure mating pattern: one forcing move ends the game immediately. The key idea is king safety, where the defending king has too many weaknesses around it and no useful flight squares. In positions like this, the strongest tactic is often a direct check that cannot be met by capture, block, or escape. Even when material is uneven, a forced mate overrides everything else and makes calculation simple.