Learn How to Mate in 2: Rook Sacrifice
This puzzle is a classic mating net where active pieces coordinate against a vulnerable king. The key idea is to use a forcing sacrifice to drag a defender away and open the final line to the king. In positions like this, material count matters less than king safety: if the enemy king is boxed in and key escape squares are controlled, a short tactical finish can appear even in a middlegame-to-endgame transition.