Learn How to Spot a Swallowtail Mate: Mate in 1
This puzzle is a classic mate in 1 example built around a trapped king and a forcing queen move. The key idea in a swallowtail mate is that the defending king’s escape squares are sealed by its own pieces and pawns, while a long-range attacker delivers the final blow. In practical terms, you should look for checks that also remove flight squares, especially when the enemy king is boxed in by heavy pieces and weakened pawn cover.