Hidden X-Sums
(Published on 8. August 2022, 17:48 by RockyRoer)
This puzzle is the third in what has become a series of "Hidden" clues. You can find the others here:
- Hidden Sandwiches
- Hidden Full Rank <-- needs a rating!
The Rules:
- Normal sudoku rules apply.
- Numbers around the outside of the grid are X-sums -- the sum of the first x digits in that row or column where x is the first digit seen from that direction. (Oops, no sums have been given!)
- Numbers in the circled cells are the X-Sums totals, but the solver must determine their value and location. A horizontal pair reads left to right and must be an X-sum on either end of the row. A vertical pair must be read top to bottom and indicates an x-sum on either side of the column. A single circled cell represents an x-sum on either side of either the row or column.
The Puzzle:
Try this puzzle on F-puzzles or CTC Software.
These links have an extra border around the outside - but you'll want to make sure conflicts are turned off: F-puzzles or CTC Software
Solution code: Column 1 and Row 5
Comments
on 23. February 2023, 18:13 by KNT
Amazing construction!
on 29. August 2022, 22:45 by Christounet
Very nice ! This reminded me of a puzzle by kolot with a similar idea but diffrent realisation : https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=00085S
Reply: Yes - we've both x-sums and sandwich versions with this idea. I've also got a full rank version with hidden clues like this. Someday I'd like to make a Chaos construction puzzle with this ruleset, but the details haven't come to me yet. Glad you enjoyed it!
on 14. August 2022, 14:59 by Whaargaarbl
What an excellent puzzle, one of my favourite X-sums ever.
on 11. August 2022, 15:12 by Bankey
What an amazing puzzle! Thanks for setting, @ RockyRoer:)
on 9. August 2022, 20:04 by GertVonnegut
The fact that this solves at all, let alone so smoothly, is just amazing. A brilliant puzzle, thanks for setting!
on 9. August 2022, 16:44 by solidvoid
Really enjoyable puzzle with cool deductions! Thanks
on 9. August 2022, 12:28 by Franjo
Great puzzle with a smooth solution path! Enjoyed every single step, thank you very much!
on 9. August 2022, 12:28 by Franjo
Great puzzle with a smooth solution path! Enjoyed every single step, thank you very much!
on 9. August 2022, 10:40 by Piatato
Very nice construction, with a smooth solve. :-D
on 9. August 2022, 09:25 by marcmees
nice construction. thanks.
on 8. August 2022, 22:05 by Kworb
Loved it! Seemed impossible at first but got easier with each deduction.
