Compass Sudoku
(Published on 5. November 2020, 20:00 by stephane.bura)
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Every row, column and compass region must contain the digits from 0 to 8. Each region contains one compass, a cell with a square. If there is an arrow from the compass to a neighboring cell, the digit in that cell is the numbers of cells in the region in that direction. Enjoy! Play this puzzle in SudokuPad (Thanks damasosos92!) |
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Solution code: Take the 18 digits that belong to the regions of the compasses in row 6 and write them from left to right, up to down. (all the digits in those regions from the upper row first, then the second upper row and so on)
Comments
on 21. March 2024, 22:30 by stephane.bura
Added SudokuPad link.
on 21. March 2024, 20:58 by damasosos92
Wow, very beautiful puzzle! Can't wait to solve the others! ^^
Also, this link now is updated and works on sudokupad:
https://sudokupad.app/t3x4f0y1x2
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Glad you liked it and many thanks for the link!
on 3. June 2023, 05:51 by Turkylobster
Bravo! I'm late to the party, but I loved the logic in this puzzle, it was very elegant.
Had a lot of fun with this one, definitely will have to check out your other puzzles!
Cheers~
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Thank you, Turkylobster!
I'm amazed that solvers still find these puzzles.
I'm glad you liked it and hope you'll find the other ones in the series fun :)
on 6. January 2023, 03:36 by KNT
Better two years late than never, right?
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:)
on 23. December 2022, 15:43 by Agent
Great puzzle, looking forward to the other ones in the series :-)
on 13. November 2022, 21:05 by Christounet
Great puzzle ! The geometry is very nice. Gonna try the other puzzles in this serie very soon I think. Thanks.
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Thanks Christounet!
Have fun :)
on 24. September 2022, 09:03 by stephane.bura
@thoughtbyte Thanks!
I hope you'll find them pleasurable :)
on 24. September 2022, 08:50 by thoughtbyte
Stellar puzzle, I look forward to trying some of the others. Thank you for this and the series!
on 3. March 2022, 08:25 by filuta
really an amazing constraint and the puzzle too, thanks.
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Thanks :)
on 25. July 2021, 12:29 by Piatato
Great puzzle! I wouldn’t go as far as to say that this was easy, but coming from your sum compass sudoku, this felt like a very smooth solve! ;-)
on 24. January 2021, 00:50 by henrypijames
Wow, this is a tough one. I made false deductions and had to restart twice. And when I finally got the correct answer, it wouldn't get accepted! I was getting crazy when I suddenly realized that it was because I had been using 9s as a replacement for 0s in my software...
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Congrats and thanks for sticking with it :)
on 1. January 2021, 02:18 by SudokuExplorer
Wonderful! Its very impressive how the Sudoku rules interplay with the Compass rules. Happy New Year! :-)
You might want to add the German "Kompass" tag to link to older puzzles of this type.
on 19. December 2020, 21:20 by polar
This puzzle was an absolute triumph. Had to restart a couple of times, but great fun once I got myself around the ruleset.
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Thanks polar and congrats for your perseverance :)
on 3. December 2020, 12:51 by Phistomefel
The ruleset allows for very interesting logical arguments and the puzzle is a lot of fun. Thanks, stephane.bura! :)
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Thank you for the feedback. Glad I could provide you with some fun given all the fun you've given me :)
on 27. November 2020, 08:19 by Eggr
I made multiple mistakes and had to backtrack, but it was a very enjoyable rule-set.
Thank you for the puzzle.
on 12. November 2020, 10:56 by MagnusJosefsson
Outstanding puzzle! Very enjoyable!
on 8. November 2020, 20:26 by Sktx
A bit confused by the rule at first, then I understood the compass concept and got down working...for hours ! That's some unusual logic there, I really thought I was making logic errors all along, but it eventually fell into place correctly. Nice one !
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Congrats!
And thanks :)
on 8. November 2020, 11:54 by bigger
one little advice, the illustration of the rule could be clearer if you only show one region instead of three interlocking regions. the instance of the rule should be more related to the illustration rather than the actual puzzle.
anyway, it's atill an intersting puzzle
on 6. November 2020, 17:21 by marcmees
Back to arrows ... refreshingly new concept. very nice logic. Thanks
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:) Thanks!
on 6. November 2020, 12:51 by cdwg2000
Great problem, to avoid ambiguity, answer submission can be simplified.
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I wanted the partitioning to matter. It's not that hard of a Sudoku problem ;)
***At first I made a mistake when submitting the answer. I mistakenly filled the different compass areas on the sixth line with 9 numbers, and then found the submission error. I hope that others will not make the same mistake.
on 6. November 2020, 04:34 by stephane.bura
Added example.
on 6. November 2020, 04:08 by stephane.bura
Fixed solution code. Thanks Yohann.
