Learn How to Spot Swallowtail Mate: Mate in 2
This puzzle is a classic mating net built around king safety and forcing checks. In sharp middlegame positions, a queen can often coordinate with a bishop or rook to trap the enemy king on a vulnerable square. Here, the key idea is that the defending king has very limited flight squares, so a forcing check can drive it into a worse box and allow a second decisive checkmate threat. Patterns like this are common in classical chess puzzles and tactical game reviews.