Learn How to Spot a Mate in 1: Swallowtail Mate
This middlegame puzzle comes from the Ruy Lopez Exchange Variation and shows how a well-placed queen can finish the game immediately when the enemy king is exposed. The key idea is pattern recognition: the black king is stuck in the center, its defenders are overloaded, and the mating square is supported by active pieces. In classical chess, these short tactical finishes often appear after development has created direct access to the king.