Black To Move Puzzle (Rated 1170): Spot Mate in 2 — Back Rank Mate
This middlegame puzzle is a classic king-safety lesson: the exposed king is boxed in, while active heavy pieces and a knight create a mating net. Even though White is materially ahead, the loose coordination around the king allows a forcing tactical finish. The key idea is to use a forcing check that restricts the king’s escape squares and sets up a final rook invasion. Patterns like this often appear in classical chess and are common in tactical training, especially when open files and weak squares line up.