Learn How to Mate in 3: Corner Mate
This middlegame puzzle is a classic example of a mating net built around an exposed king. White uses active pieces, open lines, and a forcing sacrifice to drag the defender away from the king’s shelter. The key idea is not material gain, but coordination: one piece creates the entry, another delivers the forcing check, and the final attacker lands on a decisive square. In classical chess, these patterns often appear when the king’s pawn shield is weakened and the back rank or corner squares become vulnerable.