Fork Intermediate Puzzle (Rated 1039): Win Material — Endgame Fork

This chess endgame puzzle is a classic example of a crushing fork that wins material by forcing the king and a major piece into a bad alignment. The key idea is to use a checking move that also attacks another valuable piece, creating a tactical overload. In classical chess, these patterns often appear when a centralized king and an active rook are vulnerable to a knight jump. The position rewards precise calculation and punishes passive defense.