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

https://www.nollakohta.fi/2018/05/kesa-lukuristikko.html#english

Kesä. Lukuristikko.

Petri Laarnen blogi kaikenlaisesta matematiikasta, jota et välttämättä opi koulussa.

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 😎)
@petrilaarne that was really fun! But I couldn't get 18D to work. I got 98262248, but the second-last digit needs to be 6 for the rest of the clues to work.
@christianp Glad to hear, and ouch! I did a stupid copy-paste error when translating: it should read ”each digit is the last digit of the preceding digit times 2”. Will fix it soon, the PDF will have to wait till evening. Thank you!