Learn How to Mate in 2: Back Rank Trap
This puzzle is a classic middlegame mating net where the king’s escape squares are restricted and a forcing queen sacrifice clears the way for a rook to deliver the final blow. The key idea is that material count matters less than king safety when the back rank is weak and the defender is overloaded. Once the forcing check lands, the response is essentially compelled, and the follow-up finishes the game immediately.