circle-in-square-3b

Sophie Bleau chops up, unravels, and squeezes the torus into shape

Did you solve it?

Sam Hartburn orders wine by the barrel, but wonders if she's getting the most wine

Be in for a chance to win a £100 goody bag if you can solve our fiendish crossnumber

What a difference a matrix makes

How derivatives of matrices are being used in your day-to-day lives