Chess puzzles
2,912 puzzles · rated 399–2873 · all from real games
Some mating patterns come up so often that they have names: Anastasia's mate, the Arabian mate, Boden's mate, the Opera mate, the hook, the dovetail, the double bishop mate and more.
Knowing them by shape is a shortcut. Once you recognise the pattern, you stop calculating and start looking for the move that sets it up.