Kropki Island (Beta)
(Published on 27. January 2021, 23:24 by Göran H)
Normal Sudoku rules apply.
Odd digits are land and even digits are sea. All land is part of Kropki Island. Any piece of land can be reached from any other piece of land through a series of orthogonal movements without stepping into the sea.
If two consecutive digits appear in two neighbouring cells, they are separated by a white dot. If the digit in a cell is half of the digit in the neighbouring cell, then they are separated by a black dot. A dot between 1 and 2 can either be white or black.
You can solve the sudoku in Your web browser using this link. If you right-click on the link and open it in a new tab, You can easily go back to this page and enter the solution code.
Solution code: Row 8 followed by Column 9 (18 digits)
Comments
on 19. August 2023, 17:54 by zrbakhtiar
being evil get evil rating
on 5. November 2021, 14:28 by Göran H
Added "Online solving tool" tag
on 31. January 2021, 14:07 by Göran H
Thank you, TroublesomeOrca! I'm glad you liked it!
on 31. January 2021, 06:22 by TroublesomeOrca
I used the islands rule - it made it nice and fun. I look forward to your next one
on 30. January 2021, 05:49 by panthchesh
I quite enjoyed coloring in the islands! It was fun to use the extra rule!
on 28. January 2021, 20:32 by Göran H
Thank you, Laarry! I think so, too. But I'd like to make it so that you can't miss the island logic. Also, I think it's a bit more elegant if the solution path is a bit more narrow. So I'll keep working on another version!
Anyway, I'm glad that you enjoyed this one as much as I did myself!
on 28. January 2021, 15:39 by Laarry
very nice! I personally think it doesn't matter if it's solvable without the island rule, the island path is still fun!
on 28. January 2021, 09:53 by Göran H
I changed the name to Kropki Island (Beta), as I will make an improved version where the island rule is necessary for the solve.
on 28. January 2021, 09:24 by Dandelo
Island rules are not necessary. I wonder if the sudoku rules are necessary.
on 28. January 2021, 09:24 by Göran H
Dear Greg and bigger,
Thank you for your feedback. The solution code should now work.
You're right in that the island logic doesn't seem to be necessary for the solve, but my test solvers did use it. However, I'm planning to remove the negative constraint and a few kropki dots in order to force the use of the island rule and make the solution path a bit more interesting.
on 28. January 2021, 08:58 by Göran H
Trying to fix the solution code
on 28. January 2021, 04:13 by Greg
Solution code is not accepted. Also this solves as a regular Kropki, the island rule does not affect the solving path...
on 27. January 2021, 23:50 by Göran H
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