Hawaii (Spiral Galaxy Sudoku)
(Published on 5. February 2022, 15:04 by PjotrV)
Link to the puzzle (Hawaii):
f-puzzles: https://f-puzzles.com/?id=ycnf4aqc
CtC app: https://tinyurl.com/2k6f5fm4
- In each row and column the digits 1-9 must appear exactly once.
- Each cell is part of a galaxy. There are big galaxies of exactly 9 cells and island galaxies which are smaller than 9 cells. Digits can't repeat in galaxies.
- Each galaxy is 180 degrees rotational symmetric.
- In the center of each galaxy there is exactly one circle either between 2 cells or in a cell. A circle in a cell is odd and a circle between 2 cells is a consecutive pair. Some of the circles are given, the other circles must be explored.
- Island galaxies can't touch eachother, not even diagonally.
- Clues outside the grid sum the digits of the island galaxies in that row or column.
For illustration I made an example and provided the solution as well below.
Link of the example puzzle (Maui):
f-puzzles: https://f-puzzles.com/?id=yd72u477
CtC app: https://tinyurl.com/368xtmcm
Solution code: Column 2 and column 3
Comments
on 18. December 2022, 01:19 by peacherwu2
Very well designed. Thank you so much!
on 18. December 2022, 01:18 by peacherwu2
Very well designed. Thank you so much!
on 11. April 2022, 11:58 by Vebby
Brilliant puzzle! Both phases of the solve were a lot of fun. Thanks Peter! :)
on 15. March 2022, 01:59 by mathpesto
What a wonderfully challenging puzzle and such a clever ruleset!
on 8. March 2022, 20:45 by OGRussHood
Solved in a little over one hour. I just love chaos construction puzzles, and combining it with galaxy rules was a nice twist.
on 8. March 2022, 05:34 by Elliptical
Very good puzzle. Started reasonably easy and got steadily harder.
on 8. March 2022, 00:23 by colski
Lovely puzzle, extremely hard but very logical!
One note: without the 7x7 example I would not have understood that every circle is at the center of a galaxy. I suggest: "There is exactly one circle in each galaxy, and it is always at the center. Not all circles are given."
on 13. February 2022, 10:35 by Phistomefel
Challenging and beautiful puzzle! Thank you, PjotrV!
PV: Thanks a lot! :)
on 11. February 2022, 13:39 by Andrewsarchus
Very Nice!
PV: Thanks a lot! :)
on 10. February 2022, 13:15 by PrimeWeasel
It really helped that I set a monster Spiral Galaxy myself once to get through this one (which still doesn't have a rating by the way). Really well designed Peter!
PV: Thanks a lot! :)
on 9. February 2022, 20:24 by Angelo
Really nice! I am amazed that you have found a puzzle like this that had a unique solution and was pretty approachable as well.
PV: Thanks a lot! :)
on 9. February 2022, 18:50 by Garford
It was a good idea to try the small one first. :D Very well done, PjotrV!
PV: Thanks a lot! :)
on 9. February 2022, 00:09 by abed hawila
Wow! brutal but rewarding!
PV: Thanks a lot! :)
on 7. February 2022, 00:23 by Aspartagcus
That was quite a ride! Such a narrow, and brilliantly set solve path. Enjoyed it a lot!
PV: Thanks a lot! :)
on 6. February 2022, 23:55 by MagnusJosefsson
Great puzzle! Challenging and interesting!
PV: Thanks a lot! :)
on 6. February 2022, 00:11 by Chilly
Great puzzle Peter - the Sudoku was harder than the galaxies :)
PV: Thanks a lot! :)
on 5. February 2022, 23:11 by marcmees
great puzzle. thanks.
PV: Thanks a lot! :)
on 5. February 2022, 21:24 by Jesper
Very nice, thanks!
PV: Thanks a lot! :)
on 5. February 2022, 18:37 by henrypijames
Is every galaxy less than 9 cells large an "island galaxy"?
PV: yes :)
in the example puzzle it is of course less than 7 cells :)
on 5. February 2022, 17:26 by PjotrV
solution code glitch
on 5. February 2022, 17:15 by JayForty
Very nice puzzle! Really like the ruleset and what you did with it and the solve was really smooth.
PV: Thanks a lot! :)
on 5. February 2022, 17:06 by grkles
Wow... that was incredibly difficult but extremely rewarding!
PV: Thanks a lot! :)
