Learn How to Spot a Mate in 2: Back Rank Mate
This middlegame puzzle is a classic mating net built around king safety and a vulnerable back rank. White’s heavy pieces coordinate to restrict the enemy king’s escape squares, while the bishop on the long diagonal helps tighten the net. Even though material is heavily imbalanced, the tactical idea is more important than the count: forcing checks can override everything when the king has no flight squares and the defender is overloaded or trapped.