David And Goliath Mate Puzzle (Rated 1500): Mate in 1 — David-and-Goliath Mate
This puzzle is a classic chess endgame-style tactical finish where the side with the active attack turns a huge material imbalance into immediate checkmate. The key idea is that king safety matters more than material when the enemy king is boxed in and key escape squares are controlled. In classical chess, these patterns often appear when a queen or rook invades the back rank and the defending pieces are too tied up to help.