Stay Cool!
(Published on 28. July 2026, 04:00 by The Pi Guy)
Region sum lines: Each blue line (normal) is split into sections by the 3 by 3 boxes. The sections on each individual line must have the same sum.
Ten lines: Each grey line (hollow) must either contain digits adding to 10 or divide into sections that contain digits adding to 10.
Puzzle link (SudokuPad)
Solution code: The digits in the 3 by 3 area with centre row 7 column 4, read left to right.
Comments
on 1. August 2026, 19:39 by Dr Logic
cool interactions, well set :)
on 30. July 2026, 19:29 by The Pi Guy
Wow, I definitely wasn’t expecting anyone to have an issue with the solution code! I thought it was a simple but fun twist. Glad you liked the rest though.
on 30. July 2026, 03:44 by blackjackfitz
Huzzah! I actually quite liked the ending and thought the way the 10 lines interacted with region sum lines was quite good.
My only gripe is the solution code, I don't think you need to do that. Just one row or column is fine, thanks.
on 29. July 2026, 15:04 by highonlife
Im not sure if there was a correct way of doing the ending. I basically had to bifurcate to find the last 7-8 digits.
Edit: The Pi Guy here. Nope no bifurcating involved. The last step was intended and isn’t really difficult, you just have to have the right thought (I’d highly recommend going back to that point and seeing if you can spot it).
on 28. July 2026, 18:34 by The Pi Guy
Well, that’s one way of describing it. : P
on 28. July 2026, 16:28 by baltoguy
Nice flow.
Thought I was almost done, then I wasn't.
on 28. July 2026, 14:25 by The Pi Guy
:)
on 28. July 2026, 12:38 by wuc
Great break in. Tricky steps near end. Great fun thx.
on 28. July 2026, 12:01 by Reisen
It's really an interesting ad smooth one!
on 28. July 2026, 04:14 by The Pi Guy
Spacing (ok, now it should work, sorry about that!)
on 28. July 2026, 04:11 by The Pi Guy
Spacing (3rd attempt - hopefully it works this time!)
on 28. July 2026, 04:10 by The Pi Guy
Spacing (2nd attempt)
on 28. July 2026, 04:08 by The Pi Guy
Spaced things out a bit
on 28. July 2026, 04:07 by The Pi Guy
Added a bit of background to the puzzle.
