Doublophilia
(Published on 1. January 2023, 22:48 by lepton)
This might be a good contender for the worst doubler sudoku of the year 2023. It's quite ok as an anti-knight extra region sudoku, but how it uses doublers is totally superficial.
Rules
Sudoku: Fill every row, column and 3x3 box with the digits 1-9.
Anti-Knight: Digits a chess knight's move apart cannot contain the same digit.
Killer: Digits in a cage cannot repeat and must sum to the total in the top left corner.
Doublers: One cell in every row, column, and box is a doubler cell, which doubles its value in cage totals. Doublers cannot appear a chess knight's move apart from each other.
Alternative version for those who prefer colors, XV and kropki dots is here.
Solution code: Row 6 followed by column 9, no spaces
Comments
on 16. February 2023, 15:15 by asp1310
Is there a negative constraint on the Kropki/XV one or is there not?
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Did you post this on wrong puzzle?
No? You added a bonus Kropki/XV puzzle on this one (https://tinyurl.com/9fpvf273). I am asking if that has a negative constraint or not. I.e. Can two digits add up to 5 or 10, or be consecutive or in a 2:1 ratio, if they do not have a symbol between them on that bonus puzzle? Or not?
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Sorry, I completely forgot the bonus version. There's no negative constraint.
Thank you so much! Yeah I enjoyed your recent one and often go back through a user's past 1-2 star puzzles if that's the case! ...I was wondering if I could eliminate some colors based on it - if there was a negative constraint, if two colors were next to each other with a symbol, they would not be able to be next to each other somewhere without one. Now I'm scratching my head wondering what to do next! (In a fun way!)
on 8. January 2023, 03:44 by Redmuunk
beautiful
on 4. January 2023, 21:29 by chain.reader
The doubling version is quite good.
but
The XV/kropki one is VERY good.
I loved the challenging colouring excersise.
on 2. January 2023, 17:30 by Onyx
Very pleasing puzzle, the first part is nice but the second is nicer ^^
on 2. January 2023, 15:00 by lepton
Added link to alternative version.
