Spring Forward
(Published on 13. March 2022, 13:03 by 10feet)
Spring Forward
A Killer Kropki Sudoku with special negative constraints.Rules
Normal Sudoku rules apply. Place the digits 1 through 9 in each empty cell. Digits must not repeat within the same row, column, or box.The digits in a cage must sum to the number printed in its corner. Digits may not repeat within a cage.
All orthogonally adjacent cells that sum to either 3 or 13 are indicated in the given cages.
A black dot between cells indicates cell values with a 2:1 ratio. A white dot between cells indicates cells with consecutive values. Not all dots are necessarily shown.
Links
sudokulabf-puzzles
CtC
Solution code: Enter the digits of the 1st row left to right, followed by the digits of the 9th row left to right.
Comments
on 10. November 2023, 19:19 by PinkNickels
Really fun puzzle. A little coloring, a few deductions, and it flows quite smoothly. Thanks for sharing
on 12. July 2022, 14:16 by 99jau99
I really enjoyed solving this puzzle. Especially negative constriction was very clever.
on 18. March 2022, 16:30 by JR_pianoman
Lovely puzzle. The break in took me a while but after that everything flowed nicely.
on 15. March 2022, 04:07 by FullDeck-Missing
What a lovely puzzle! We messed up a couple of times and went back to restart from the beginning but the reward was worth it. The negative constraint was really helpful when we remembered to use it, especially to rule out sneaky sums to 3.
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I'm glad you stuck with it and got to the end. I find it incredibly hard to go back to the beginning of a puzzle if I cannot reasonably unwind my mistake. Kudos and thank you for the kind words.
on 14. March 2022, 15:22 by rhodri
Fun puzzle, thank you!
on 14. March 2022, 05:38 by Hecspeed
nice interactions... enjoyed the solve throughout
on 14. March 2022, 00:18 by Bankey
Fun puzzle. Thanks, @ 10feet :)
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Thank you. I'm glad you enjoyed it.
