Sisyphos
(Published on 12. April 2021, 13:19 by Phistomefel)
About the rules:
- Each row and column contains each number from 1 to 7 exactly once.
- A number outside the grid indicates how many cells a rock rolls from the adjacent square. Each number represents a hill of the corresponding height. The rock only ever moves from a higher to a lower hill and then rolls towards the smallest orthogonally adjacent hill. If the two smallest adjacent hills are the same size, the rock rolls straight ahead.
Here you find a example for this puzzle type on a 6x6-grid.
In my experience, it is easy to make mistakes with this puzzle type. Therefore, I recommend solving the example puzzle first.
The puzzle is also available online via Penpa Plus. Have fun solving!
Solution code: 6th and 7th column
Comments
on 15. October 2021, 09:46 by MagnusJosefsson
Very enjoyable, well-set puzzle! Requires patience and some careful thought.
on 30. June 2021, 17:02 by Phistomefel
Dankeschön, tuace! :)
on 30. June 2021, 16:18 by tuace
Klasse! :)
on 18. April 2021, 23:53 by Felio
Very fun puzzle to solve. I can imagine Sisyphus is hard to set interesting puzzles for, given the constraints, but it's neat to see the rolling rock logic come into play in the most delightful ways. It's probably possible to work out some fun ways where rocks can roll together in some very fun paths (or introduce a negative constraint by forbidding rocks to finish their roll in the same cell), though it probably would require a bigger grid, and this was already a pretty decent time solve.
on 18. April 2021, 16:35 by DiMono
It's interesting how the logic, which seems like it would make the puzzle very difficult, ends up making for a very smooth solve. I especially liked how the 5 clue resolved. Thank you for the puzzle.
on 17. April 2021, 11:57 by Thorsby
Very nice puzzle and very nice to have inspired it. In my penguin puzzle, the penguins always go horizontally to differentiate between two equal numbers. Here the rock always moves straight ahead instead, which makes for some nice logic.
on 16. April 2021, 15:39 by Farkov
Very nice and unique puzzle.
It would have been even nicer if I hadn't cocked-up half a dozen times and had to backtrack :)
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Thank you for your feedback, Tim! :)
I can well understand that this puzzle type invites one to make mistakes. I had quite a trouble myself to finally construct a puzzle that would pass the test solve without me spotting a possibility I had overlooked.
on 14. April 2021, 16:40 by StefanSch
Realy nice! Thank you.
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Dankeschön, StefanSch! Freut mich, wenn's gefallen hat. :)
on 14. April 2021, 00:44 by SudokuExplorer
I really enjoyed both puzzles! The logic was quite unique in them and fun to work out, thanks! :-)
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Thank you very much, SudokuExplorer! I am very glad you enjoyed the logic in the puzzles. :)
on 13. April 2021, 21:13 by Phistomefel
Thank you, Qodec! I am glad you enjoyed the puzzle.
on 13. April 2021, 13:42 by Qodec
Loads of fun and very fresh logic! Thanks!
on 13. April 2021, 05:58 by Phistomefel
Added link.
on 12. April 2021, 20:21 by marcmees
very nice. Will seduce me to have an other glance at P81.
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Thank you, marcmees! I remember this clue. :)
on 12. April 2021, 18:00 by Jds2
That was really fun, and I don’t know if you intended the puzzle to do this, but I felt like the puzzle was teaching me the logic of this puzzle-type.
Thank you for creating this!
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Thank you for your nice comment! I am very glad that the puzzle turned out to be instructive. I was hoping it would be that way, but the example and the normal puzzle are the only two puzzles I managed to create so far that don't have given digits or use a maximal clue. So, there was also a bit of luck involved.
on 12. April 2021, 16:36 by Phistomefel
Thank you so much, Jesper! :)
on 12. April 2021, 15:11 by Jesper
Fun concept! I really enjoyed the puzzle.
