Hippopotamus Defense Puzzle (Rated 909): Crush a Fork — Decisive Material Gain
This middlegame puzzle is a classic example of a crushing fork that wins material by forcing the enemy king into a bad square and then exploiting overloaded defenders. White’s active knight and queen coordinate to create a direct tactical threat against the black king’s shelter and key pieces. The position also features hanging pieces and weak squares, so the tactic is not just about one check, but about turning activity into a decisive material gain.