Sudoku, potatoes and crossnumber's biggest secrets finally revealed in our spring 2025 issue. Plus all your favourite columns!

Can you solve it?

Read about Maxamillion Polignac's adventures in a prime-hating world

Undoubtedly the most influential voice on this hottest of hot topics.

Learn how to model your heart one beat at a time ❤️

Never be stumped by a maths problem again, with this crash course from the ever-competent Stephen Muirhead