Sacrifice Puzzle (Rated 1617): Force Mate in 4 — Chess Endgame Attack

This chess endgame puzzle is a classic forcing attack where king safety matters more than material. White uses a sacrifice to drag the enemy king into the open, then follows with a series of checks that restrict escape squares. The key idea is attraction: the defender is lured onto a vulnerable square, where the coordination of rook and queen creates a mating net. In practical classical chess, these patterns often decide games instantly.