If you fancy a bit bigger but not too difficult , I just published a on my blog! I promise it’s much easier than the Magazine one.

nollakohta.fi/2018/05/kesa-luk

Petri Laarne

Correction: 18D should read ”Each digit is the last digit of twice the preceding digit”. Thanks @christianp for spotting this! (And very ace to solve a puzzle with an error in it 😎)

I’ve now updated the original post with a solution. Hoping that we found the same one!

A Mastodon instance for maths people. The kind of people who make $\pi z^2 \times a$ jokes.

Use $and$ for inline LaTeX, and $and$ for display mode.