Learn How to Spot: Opera Mate
This middlegame puzzle comes from the Scandinavian Defense, Modern Variation, where king safety breaks down fast when the center is open and the enemy king is still stuck in the middle. The key lesson is that a seemingly active position can hide a forced mate if a rook gains access to the back rank and the king has no flight squares. In classical chess, these patterns often appear after development leads to direct pressure on the king.