Islands 4: Chaos Theory
(Published on 13. March 2024, 20:00 by SamuPiano)
I’m back to setting with my favorite ruleset!
Rules:
This is a 9x9 map of the ocean - there are 'ocean' cells and 'island' cells.
Normal sudoku rules apply.
Killer sudoku rules apply - digits cannot repeat within a cage (REGARDLESS OF TYPE) and must sum to the number in the top left corner of the cage.
HOWEVER, 18 cells - two in each box, row and column -are 'island' cells - these do not count toward the cage totals. Only 'ocean' cells count towards cage totals. There can be as many island cells as needed in any cage.
Cells separated by a white dot are 'harbours' - the pair of cells connected by the dot contains exactly one island and one ocean and the digits in these cells have a difference of 1.
Links:
Happy solving! Please do leave a comment if you enjoy!
Links to the other Islands puzzles:
Solution code: Row 3, read left to right.
Comments
on 17. March 2024, 17:26 by QuiltyAsCharged
Terrific puzzle. I just solved the entire Island series, they're all great but this one was my favorite.
When solving them all in a row, there are interesting comparisons that emerge. I can't say more without spoilers. :)
Thank you so much for persevering through all the puzzles! I really appreciate it :) I would love to know more of your thoughts. If you have Discord, my username is SamuPiano :) -SP
on 17. March 2024, 05:15 by SamuPiano
Emphasized regardless of type in the rules.
on 17. March 2024, 04:41 by KMD
Brutal! Though I still feel accomplished afterwards.
on 15. March 2024, 06:28 by SudokuHero
Did all the previous ones as practice. All very well set puzzles.
on 14. March 2024, 19:42 by Garford
And finally this puzzle sailed into the harbour safely. It's a great puzzle, loved to solve it several times. With every time it got just more interesting. :)
on 14. March 2024, 11:34 by Bankey
Fascinating puzzle. Thanks, @ SamuPiano :).
on 14. March 2024, 05:23 by vitaminz
I absolutely love this series, and this is no exception. Somehow I missed #3. I'll have to go back. Thanks for the puzzles!
