Internal X-Sums Chaos Construction (9x9)
(Published on 16. July 2022, 04:01 by jovi_al)
Here's the 9x9 version! I hope I don't disappoint anyone by posting something that isn't hard.
Place a digit from 1-9 into each cell such that every row and column contains all of the digits. In addition, deduce 9 regions of nine orthogonally connected cells each that also contain all of the digits. A digit X in a cell containing a number N in its top left corner indicates that that cell sees X digits in its own region via row and column including itself, and that those digits sum to N. Region borders restrict view.
Solution code: Row 1, row 2
Comments
on 10. May 2025, 17:43 by cascadeshiker
Wow! An amazing piece of setting. Thanks so much.
on 23. April 2025, 20:44 by wuc
Awesome. Just awesome.
on 21. October 2024, 10:33 by arrrgh
I had a very difficult time with this puzzle. Beautiful nonetheless.
on 9. August 2023, 08:42 by Sinuit
Perfect puzzle! It is quite approachable, but I still needed very long due to some restarts. Loved the ruleset.
on 21. July 2023, 18:58 by DasRoc
Love this rule set! Great puzzle!
on 7. April 2023, 10:25 by Yann
So many question marks that interacted beautifully with the clues !
Thank you for this puzzle
on 4. October 2022, 22:00 by Playmaker6174
Lots of fun, it's great to see how the later half of the solve was done :D
on 11. September 2022, 15:04 by cornuto
Brillant.
on 8. August 2022, 03:39 by josemadre
Yes, I love this puzzle!
on 25. July 2022, 17:03 by AnnaTh
I love this variation. And it wasn't that easy...
on 22. July 2022, 20:43 by StephenR
What a beauty, thanks a lot. "Isn't hard" - lol, I never find puzzles on LMD not hard - everyone here is freakishly clever, in the nicest possible way.
on 22. July 2022, 04:07 by Agent
Very fun puzzle!
on 20. July 2022, 08:28 by Phistomefel
Very nice Chaos Construction! Thank you so much for setting it, jovi_al!
on 17. July 2022, 23:59 by Florian Wortmann
Delightful
on 17. July 2022, 22:21 by wenchang
Very nice setting.
https://youtu.be/Nzi-s8DsyhA
on 17. July 2022, 16:59 by Piatato
Very nice and smooth solve. Thanks!
on 16. July 2022, 17:30 by DiMono
"I hope I don't disappoint anyone by posting something that isn't hard."
You posted a puzzle I'm capable of solving? How dare you.
on 16. July 2022, 16:44 by Franjo
Cannot believe that anybody could be disappointed by this wonderful puzzle! Love it.
on 16. July 2022, 15:45 by Snookerfan
Great puzzle and ruleset! Thank you!
on 16. July 2022, 15:31 by SirWoezel
Excellent puzzle. Thanks.
on 16. July 2022, 12:22 by Bankey
What a beautiful puzzle! Very clever use of region geometry. Thanks for setting, @ jovi_al :)
on 16. July 2022, 11:37 by MagnusJosefsson
Very enjoyable smooth and easy puzzle!
on 16. July 2022, 09:44 by Niverio
Very nice, very enjoyable!
on 16. July 2022, 09:42 by Christounet
No disappointment here ! Keep them coming !
on 16. July 2022, 09:28 by Jesper
Excellent, thanks!
on 16. July 2022, 09:16 by marcmees
Not disappointed. thanks.
on 16. July 2022, 05:49 by Steven R
Lovely stuff!
