Chaos Construction: Border Sums
(Published on 1. February 2022, 17:06 by kolot)
I enjoy solving Chaos Construction puzzles and here I constructed one myself. I hope you enjoy it. Your comments and ratings are highly appreciated as usual.
RULES: Each row, column, and region must contain the digits from 1 to 9 exactly once. The regions must be orthogonally connected and determined by the solver. Clues outside the grid show the sum of the two digits separated by the first region border seen from that direction in that row/column. (A row or column with a clue cannot be occupied by a single region.) For example; if the regions were the regular 3x3 boxes, then the clue at the top of column 6 would be the sum of R3C6 and R4C6, and the clue at the bottom of column 6 would be the sum of R6C6 and R7C6.
Solution code: Number of region borders in each row from top to bottom followed by the digits in row 8.
Comments
on 29. April 2024, 12:09 by by81996672
Very nice puzzle! Thank for your share.
on 18. February 2024, 16:41 by Piatato
Awesome puzzle, very hard indeed!
on 15. February 2024, 00:31 by Myxo
Incredible puzzle, and very very hard!
on 8. March 2023, 05:02 by glum_hippo
My comment would be identical to KNT's, but off by just over a month ;-)
Really rewarding to solve this - twice!!
on 4. February 2023, 21:00 by KNT
I solved this puzzle a year ago but apparently never recorded my solve. I re-solved it today and it was just as great as I remember.
on 9. November 2022, 23:46 by cdwg2000
Very nice!
on 28. May 2022, 10:22 by Vebby
Superb! Some challenging deductions that were very rewarding to find. Thanks Emre! :)
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Thank you for solving and for this great comment!
on 5. May 2022, 17:50 by Christounet
Absolutely amazing ! This one took me forever and I had to come back to it because I got stuck a couple of times but I really enjoyed the whole journey (even when i broke it because it felt so good when i finally got it). Another piece of art !
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Thank you so much for solving the puzzle and for these very kind words!
on 15. March 2022, 18:55 by DVFrank
Absulutely incredible puzzle! :^)
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Thank you!
on 28. February 2022, 17:01 by Mody
Großartig
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Danke!
on 28. February 2022, 00:18 by Phistomefel
Phenomenal puzzle! The rules are very simple and the puzzle just kept throwing interesting problems my way. Thank you so much for creating this gem, kolot!
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Thank you so much for your kind comments, Phistomefel!
on 16. February 2022, 23:45 by bsparks
Looks easy at first, but is definitely tricky in such a satisfying way!
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Thanks! Happy to see that it was satisfying.
on 11. February 2022, 21:17 by hepcecob
This one is so easy to mess up. Make sure to REALLY pay attention to all the numbers at the beginning.
on 7. February 2022, 05:40 by kolot
Added a sentence to the rule set.
on 7. February 2022, 00:16 by abed hawila
One of the best chaos construction puzzles I ever solved! Brilliant puzzle!Thanks for creating this gem, Kolot!
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Thank you so much! Your comment made me very happy.
on 5. February 2022, 15:00 by drbs
Sehr schwierig, fünf Stunden damit verbraten.
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Vielen Dank für Ihre Zeit!
on 5. February 2022, 12:26 by TheRiddler
Brutally hard but very satisfying!
I think it is quite easy to make a wrong deduction in this puzzle, so you have to be very diligent all the time!
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Thank you for solving the puzzle!
on 5. February 2022, 04:36 by kolot
Changed difficulty to 5 stars based on feedback.
on 4. February 2022, 22:46 by marcmees
out of the ordinary. wow. incredible puzzle. thanks.
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Thank you so much for your kind comment.
on 2. February 2022, 17:47 by twobear
Really beautiful puzzle and very enjoyable logics. Thank you!
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Thank you! Happy to see that you enjoyed it.
on 2. February 2022, 16:11 by henrypijames
Does a clue mean there's guaranteed to be a region border? I. e. a 3 cannot be a straight region with a 3 as the last digit?
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Yes, a clue guarantees a region border. It is not possible that a row or column with a clue is a single region.
on 1. February 2022, 23:16 by RockyRoer
This looks fun… I was thinking of a similar clue type, but multiplying instead. I’ll have to give this a go!
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Products would also work nicely.
on 1. February 2022, 21:52 by Jesper
A lovely chaos construction! I enjoyed it a lot, thanks.
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Thank you! Happy to see that you enjoyed it.
