Sudoku Variants Series (279) - Parity Sections Sudoku
(Published on 29. July 2020, 00:00 by Richard)
Parity Sections Sudoku
Apply classic sudoku rules.
A number in the lower right corner of a cell is the sum of the digits in the cells in the section that cell is part of. A section consists of a group of all orthogonally connected cells with digits of the same parity (even or odd).
Inspiration for this type comes from stephane.bura.
Solve online in Penpa+ (thanks Nick Smirnov!)
Solution code: Row 2, followed by column 9
Comments
on 21. March 2023, 00:07 by TomBradyLambeth
This one broke my brain for a while, but I finally cracked it!
on 16. October 2022, 04:28 by Nylimb
Lovely! It took me too long to prove that something that looked impossible really was impossible; after that the puzzle got much easier.
on 28. July 2022, 19:09 by snowyegret
https://f-puzzles.com/?id=268kz8ke
on 10. November 2021, 06:57 by Richard
Added link for online solving. Thx Nick!
on 9. November 2021, 22:07 by Nick Smirnov
Penpa:
https://git.io/JXrsS
on 16. March 2021, 19:09 by Richard
@Rollo: :-)
Well done! Close to 100% again.
on 16. March 2021, 16:29 by Rollo
Wunderschön. Monatelang hab ich es beiseite getan und dachte, da geht gar nichts. Aber wenn man sich die Summen genau anschaut, geht doch 'ne Menge. Wenn man den Einstieg dann erst mal hat, ist es gar nicht so schwer. Jetzt fehlt mir nur noch SVS 310. Aber morgen kommt ja schon ein neues :-).
on 30. August 2020, 23:54 by bob
I didn't think I would like this--it looked very arithmetic-heavy and I have a huge number of hard/very hard puzzles to work on. I'm glad I gave it a try. It's almost more of a path-forming sudoku. I'll admit I never tried the original because I didn't fully understand the rules and it was rated very hard...maybe I'll take another look.
on 4. August 2020, 07:26 by Richard
Thanks Stephane! Always nice to read such a comment from the brain behind the idea! :-)
on 2. August 2020, 19:01 by stephane.bura
Your puzzle brought me such pleasure. Being able to go through this thought process as a solver is a gift I truly appreciate. Thanks Richard.
on 1. August 2020, 17:56 by Realshaggy
I did some time ago, but my trying was not good enough :-)
on 1. August 2020, 17:50 by Richard
Did anyone try Stephane’s puzzle that inspired me? I still think that one deserves more solves! Go give it a try!
on 29. July 2020, 18:10 by marcmees
thanks for this nice puzzle. btw. I start making my notes on the bottom half, gradually working my way up when more notes are needed.
on 29. July 2020, 17:39 by Richard
@Henry: Good question! Tbh I did just the same as Stephane. But now that I think of it: the sum is sometimes a three digit number that takes more space than a conventional killer sum and most people make their notes in the upper half of the cells... For what it is worth. :-)
on 29. July 2020, 17:34 by henrypijames
Q for both authors: What's the reason for writing the sum in the lower right corner instead of the conventional upper left?
on 29. July 2020, 17:09 by Mody
Spitzenrätsel :)
on 29. July 2020, 16:30 by Greg
Excellent puzzle!
on 29. July 2020, 09:05 by Richard
@Stephane: I am honoured by the comparison! :-)
I like most of your innovative creations, and that is one of the criteria to be included in SVS. So be prepared that more of those will be covered in the future. ;-)
on 29. July 2020, 08:25 by stephane.bura
I feel like if The Beatles covered one of my songs. Looking forward to trying it :)
on 29. July 2020, 00:10 by ibag
Wonderful!
