Sequential Killer Sudoku
(Published on 3. August 2020, 15:22 by SenatorGronk)
- Standard sudoku and killer sudoku rules apply: Every row, column and 3x3 box contains the digits 1-9. Digits may not be repeated within a cage.
- Anti-knight constraint: Cells which are a chess knight's move away may not contain the same digit
- The killer cage sums are all different and form a sequence of consecutive integers (ex. 8, 9, 10, 11... or 19, 20, 21, 22...)
- Every pair of cages with sums differing by exactly one must be orthogonally adjacent.
- The cage with the smallest sum is orthogonally adjacent to the cage with the largest sum.
- There is one thermometer in the grid. Numbers in a thermometer must increase starting at the bulb.
If you would like to solve in penpa-edit, click here.
Solution code: Row 1 and Row 9 (18 digits, no spaces or separators)
Comments
on 28. October 2020, 20:04 by DiMono
As with most anti-knight sudoku, it was significantly easier once I remembered the anti-knight restriction exists. Over 2 hours of little progress, then I reread the rules and finished in about 8 minutes. Go figure.
Edit: Yep, went and re-solved it while remembering the anti-knight restriction, and the solve was much smoother and much less frustrating. An excellent puzzle either way.
on 27. October 2020, 17:06 by SenatorGronk
The good news: My puzzle was featured on CTC!!
The bad news: They didn't re-write my unnecessarily Byzantine version of the rules.
The rules have now been updated for some much needed clarity.
on 27. October 2020, 01:32 by Thorsby
This took me 3 hours, 27 minutes!
on 11. August 2020, 20:49 by SenatorGronk
@Narayana, funny you mention the thermo -- it's a hack I had to add once I realized that two digits couldn't be disambiguated otherwise. I tried to change some of the cages to avoid needing it, but couldn't do so without destroying some of the steps I had put together.
on 10. August 2020, 06:39 by Narayana
I highly recommend this puzzle! People who like killers will love this one!
It does not involve crazy arithmetics, just the usual killer tricks and a bit of nice logic.
Give it a try and also dont forget to rate at the end!
on 3. August 2020, 20:15 by vdwestdg
Nice puzzle, reasonable solve after getting maths finalized
on 3. August 2020, 16:24 by glum_hippo
I made a similar puzzle (in concept, at least) and posted it here as 0003HR
on 3. August 2020, 16:18 by SenatorGronk
Simplifying the explanation
on 3. August 2020, 16:17 by SirWoezel
Wow. Excellent puzzle! After some scratching of the old brainbox things dawned on me pretty fast and it actually was very do-able.
on 3. August 2020, 15:34 by SenatorGronk
Adding anti-knight tag
