Learn How to Spot: Mate in 1
This middlegame puzzle comes from the Sicilian Defense, Old Sicilian, and it shows how quickly a kingside attack can become decisive when the enemy king is exposed. The key idea is to notice when a queen can enter the king zone with direct contact on a weak square near the monarch. Even in a balanced material position, a single tactical shot can end the game immediately if the defender has no useful interposition or capture available.