It is not difficult but it is time consuming so I would recommend either refreshing or taking a screen shot

I'm not good with numbers, so it would take me forever but I really like your construction. TY!

Great idea! I didn’t manage it but fun for those who can.

more time?

@barry - to be honest, although I enjoyed constructing this, I do not believe that extending the time allocated to 5 or even 10 minutes would help [even if I knew how or was able to]. So although it fits the criteria it is not a feasible wall for this site.

I think it’s a great and challenging idea Tilly. The fiendishness of it is that you pretty much need to know the answer to every single clue before you can tackle the maths part. Most grids allow for some minor gaps in knowledge. I wonder if there’s a way of tweaking it.

I enjoyed this but there are a few ways of doing it with the numbers given.

@John - are there? Must confess I did not think so given that four had = signs and all the others + signs. I shall take another look. Thank you for your feed back

I wondered if that might be the case but I never got that far :)

had another look and where the math functions are, there is only one viable solution

@Tilly I think you could swap the 2 and 7 of one group with the 5 and 4 of another

@ Fam, thanks, sorry John as well - oh well! back to the drawing board and a large tincture. :-)

Original and brilliant. Absolutely loved it! 5*

Another clever wall
👍🏻👍🏻

Aside from debating whether there were 12 or 13 Apostles, and being unaware of the pony reference, it was clever but needs pen and paper and about 15 minutes. You made a great puzzle but it doesn't work within the time frame.

Fiendish. As advertised.