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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.

Petri Laarne @petrilaarne

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!