Fork Advanced Puzzle (Rated 658): Fork — Tactic
A fork is a powerful tactical idea in which one piece attacks two or more targets at once. In this chess endgame, an active knight can combine check with an attack on a valuable enemy piece, forcing the king to respond while preserving the material threat. The key strategic lesson is that piece activity often matters more than simply protecting every pawn. Look for forcing moves that create multiple problems and convert a small material edge into a decisive advantage.