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Sven Bjarke Gudnason and Calum Ross introduce you to the wonderful world of skyrmions

We review the sixth of this year’s nominees for the Book of the Year

Matthew Scroggs sets the first puzzle. Can you solve it?

Using graph theory to predict who will sit the iron throne

Looking back at puzzles about complex numbers, tic-tac-toe, and the Eggnog Mystery

Staring at your coffee, you wonder whether the light reflecting in cup really is a cardioid curve...