Sudoku Variants Series (352) - Friendly Parity Sandwich Sudoku
(Published on 22. December 2021, 00:00 by Richard)
Friendly Parity Sandwich Sudoku
Solve online in F-Puzzles or in CtC-app (thanks RockyRoer!) or in Penpa+ (thx SudokuExplorer!)
Apply classic sudoku rules.
Clues outside the grid indicate all digits in the corresponding row or column that have - on both sides - neighbours of the same parity as the digit itself. Clues are placed in ascending order and not necessarily in the order they appear in the grid.
Solution code: Row 1, followed by column 8.
Comments
on 17. February 2022, 19:51 by pin7guin
Ein wirklich schönes, freundliches Rätsel ;-)
on 15. January 2022, 18:41 by Tintenklexs
Rule clarifying question: If a number is at the border of a row and only has one neighbour, will it still be noted on the outside of the grid if the neighbour is of the same parity?
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Digits on the border only have a neighbour on one side and will therefore never be mentioned as clue outside the grid. :-)
on 5. January 2022, 11:50 by Mody
Das war schön :)
on 22. December 2021, 22:35 by Lizzy01
Very nice!
on 22. December 2021, 18:27 by Richard
Added link to Penpa+. Thx SudokuExplorer!
on 22. December 2021, 18:23 by SudokuExplorer
Here's a Penpa+ link: https://git.io/JyeLR
Parity themed puzzles are always fun, thanks! :-)
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Reply: that's nice to read!
Next week is the sequel to this one: Hostile Parity Sandwich...
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@Richard: I can probably guess what that means... I look forward to it! :-)
Btw the following parity-themed ruleset by Thorsby might be suitable for your SVS: id=0007KX
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@SudokuExplorer: Thx. And yes, I noticed it a while ago. It's on my pile of 'unsolved and need more time to get into it'-puzzles. :-)
on 22. December 2021, 06:23 by Richard
Added links for online solving. Thx RockyRoer!
on 22. December 2021, 02:38 by Storm
@AppleSaws Here is an example: the row of digits 132465798 would have the numbers 4 (even number sandwiched by two even numbers) & 7 (odd number sandwiched by two odd numbers) as outside clues.
on 22. December 2021, 00:20 by RockyRoer
F-puzzles link for anyone who'd like it: https://f-puzzles.com/?id=yyuczwuv and CTC: https://bit.ly/3FjEjn7
