Vienna Game Max Lange Defense Fork Beginner Puzzle (Rated 989): Spot Back Rank Mate — Mate in 2

This middlegame puzzle shows a classic king-safety tactic where the enemy king is boxed in by its own pieces and back-rank limitations. White’s active queen and knight coordinate to create a forcing sequence that leaves Black with no useful defense. The key idea is not a long attack, but a precise tactical refutation that exploits a trapped king, loose back-rank squares, and overloaded defenders. These positions often look material-heavy, yet one forcing check changes everything.