Learn How to Spot Mate in 1: King Safety
This middlegame puzzle is a pure king-safety finish: one side’s pieces are coordinated around the enemy king, and the position collapses under a single forcing move. In classical chess, these moments often come from a queen or rook invasion that leaves the defender with no legal reply. The key idea is to look for direct checks first, then ask whether the king has any escape squares, blocks, or captures available. When all three are gone, the attack is already over.