Learn How to Swallowtail Mate: Mate in 1
This puzzle is a classic mate in 1 built around a swallowtail mate motif. The key idea is that the enemy king is boxed in by its own pieces and pawns, leaving only a tiny set of squares. In positions like this, a single queen move can create a mating net because the king has no flight squares and the checking piece is protected. These are the kinds of tactical shots that often appear in a sharp middlegame, even when material is balanced.