Bishops Opening Kitchener Folly Puzzle (Rated 920): Crush with a Fork — Decisive Material Gain

This middlegame puzzle is a classic example of a crushing tactical sequence built around king safety and piece coordination. Black’s active knight jumps into the attack with tempo, forcing the white king into a vulnerable square and creating a direct threat against the queen and other loose pieces. The key idea is not just the check itself, but the follow-up that wins material by exploiting the exposed king and the trapped, overloaded white queen.