King's Knight Opening Other Variations Puzzle (Rated 1155): Win Material — Discovered Attack
This middlegame puzzle is a classic example of a crushing discovered attack against an exposed king. The key idea is that one active piece can be removed or redirected to open a line for another attacker, forcing the defender into a losing sequence. Here, the position is not about a mating net but about a decisive material gain created by king activity, loose pieces, and open files. Once the king steps in, the tactical refutation becomes clear and the balance collapses.