Kropki Sudoku
(Published on 14. October 2021, 17:45 by SudokuExplorer)
Each row, column and 3x3 box contains the digits 1 to 9.
Normal kropki rules apply (but with grey dots).
A black dot separates two digits with a 1:2 ratio.
A white dot separates two digits with a difference of 1.
A grey dot acts as either a black or white dot (or both).
Adjacent cells containing digits with a 1:2 ratio or/and a difference of 1 must be separated by a dot.
You can try this on Penpa+ or F-Puzzles. Enjoy!
Solution code: Enter the 1st column and 6th row
Comments
on 16. October 2021, 14:53 by SudokuExplorer
@Jesper: You're welcome! I'm really pleased you enjoyed the solve :-)
@BHUNTER: Thanks for the lovely feedback! I'm really pleased you had fun with the -ve constraint and the ambiguity of the grey dots :-)
on 16. October 2021, 02:32 by BHUNTER47
Loved this puzzle. The use of the mystery kropkis along with the negative constraint made this a fun variation
on 15. October 2021, 21:30 by Jesper
A very nice classic Kropki Sudoku. Thanks, SudokuExplorer!
on 15. October 2021, 19:00 by SudokuExplorer
@abed hawila: Thanks for the lovely feedback! I tried to make the opening logic easier to spot, and the logic flow linearly afterwards. So I'm really glad it worked out this way for you :-)
@Joseph Nehme: Thanks a lot for giving it a go and the kind feedback! I'm pleased you had an enjoyable solve :-)
@Playmaker: Thanks a lot for the lovely feedback! The reason for introducing the grey dots was to try and preserve the logic that I enjoyed whilst setting it, so I'm really glad it worked out that way :-)
@watertissue: Keeping the number of dots to a minimum after the break-in and mid logic was an interesting challenge. I'm really pleased you also enjoyed the use of the negative constraint :-)
on 15. October 2021, 15:00 by watertissue
Really like the negative constraints! Good puzzle
on 15. October 2021, 10:53 by Playmaker6174
Wow, there're some lovely logics in this one, I enjoyed it a lot :)
on 15. October 2021, 08:35 by Joseph nehme
I really enjoyed this puzzle. Great setting as always :)
on 15. October 2021, 00:52 by abed hawila
Very nice! After spotting the opening trick, everything went smoothly. Thanks for the fun puzzle!
on 15. October 2021, 00:10 by SudokuExplorer
@TimurA: Cheers! I'm glad you enjoyed the logic :-)
on 14. October 2021, 22:33 by TimurA
I found some interesting logic. Lovely!
