Invisible Killers
(Published on 10. March 2023, 21:32 by yttrio)
The rule set for this puzzle was originally created by Ennead, and his puzzle can be found here.
Rules:
Normal Sudoku rules apply.
Several killer cages are present in the grid. Digits in a cage cannot repeat, and sum to the clue in the top-left-most cell of the cage (top-most is evaluated first, followed by left-most). Cages cannot overlap.
Only the number for each cage is visible, and it is up to the solver to determine the rest of the cells each cage visits.
Every cage visits at least two regions and has an equal number of cells in each region visited.
6x6 Example:
The image below shows a sample 6x6 puzzle and solution with the same rule set.
Play the example 6x6 in f-puzzles.
Play the example 6x6 in SudokuPad.
Solution code: Digits within cages in row 7 (left to right) followed by digits within cages in column 8 (top to bottom), no spaces
Comments
on 24. October 2023, 02:35 by karlmortenlunna
Wow! Amazing puzzle!
on 8. August 2023, 05:10 by damasosos92
Brutal is really the right word for this one, but I have some other words: beautiful, astonishing and INEEDSOMERESTNOW.
on 27. May 2023, 19:56 by peacherwu2
Failed the 1st attemp. Really glad I tried a second time. Truly amazing logic! Incredibly beautiful! Thank you so much!
on 26. March 2023, 07:25 by dennischen
BRUTAL. But amazing! Thanks for this puzzle!
on 12. March 2023, 15:29 by Snookerfan
Very nice, very hard and very rewarding! Thank you
on 11. March 2023, 09:14 by Ennead
A very satisfying puzzle to solve with tight logic and meaningful deductions. Left me with a feeling of having mastered the structure of the puzzle. Difficult, but never unfair or frustrating. Loved it!
on 10. March 2023, 21:54 by SudokuHero
Such an elaborate puzzle for such a simple ruleset. There was only 1 really hard deduction, but it felt really good to deduce.
