Learn How to Spot Mate in 1: Knight Fork
This puzzle comes from the Rat Defense and shows how a single tactical shot can end the game immediately when the enemy king is underdeveloped and short on defenders. In classical chess, openings that leave pieces loose around the king often create mating nets, especially when a knight can jump into a central or kingside square. The key idea is not material gain, but exploiting king safety before the opponent can coordinate defense.