DAD
(Published on 5. March 2021, 21:30 by PrimeWeasel)
When A=1, and D=4, then DAD=414
A fully filled Sudoku grid sums to 405, but 4+0+5=9. When you add this 9 to the 405, you get 414. That's what DAD does, he makes it work, even though it does not make sense. You don't question DAD, how weird his rules may be. And 4+1+4=9, so there you go.
So, what are DAD rules?
Besides the normal Sudoku rules, there are Killer cages.
These killer cages sum to either 1, 4, 14 or 41. Digits can not repeat.
The grey highlighted 4s are seperate regions which sum to 45, because 41+4=45
The grey highlighted 1 sums to 18, because 4+14=18
Within cages, white dots appear when there is a difference of 1 or 4 between two adjacent cells. These white dots are only found within cages, not between cages. In this way, there is a negative constraint for the white dots.
I hope you like DAD and that he's not too tough on you.
DAD
Solution code: Row 9, Column 7
Comments
on 20. June 2022, 20:43 by kevinyoung90
This was a very nice puzzle, at least once I realized there was a negative constraint.
on 7. April 2022, 20:39 by Piatato
Fun puzzle, lots of nice little deductions. :)
on 16. January 2022, 15:47 by abed hawila
Very nice, very smooth solving path!
on 17. September 2021, 20:55 by Zombie Hunter
The skill, patience, and creativity it took to set this boggles the mind.
on 10. September 2021, 16:40 by Sktx
Contrarily to @PixelPlucker, I made heavy use of the 45 regions at the beginning, which felt like a way more complex logical path than I could have found. But that's just how DAD is. He sounds way more elite than he really is. That's what makes him an awesome DAD.
on 7. March 2021, 13:19 by PrimeWeasel
Updated the rules
on 6. March 2021, 13:54 by Krokant
For some reason it feels as if there's a joke just waiting around the corner. How strange.
DAD might be weird, but has company was enjoyable, for sure. Nice puzzle.
