Learn How to Back Rank Mate: Queen Sacrifice
This puzzle comes from the Italian Game and shows how a seemingly active middlegame can hide a forced mating net. The key idea is that the enemy king is boxed in while major pieces coordinate to exploit the back rank and the weakened king shelter. When the queen can invade with tempo, the defender often has no time to organize defense. In short tactical positions, king safety can outweigh material and decide the game immediately.