Sudoku Variants Series (294) - X-Sums Snake Sudoku
(Published on 11. November 2020, 00:00 by Richard)
X-Sums Snake Sudoku
Inspiration for this type comes from Willy Wonka.
Apply classic sudoku rules.
Clues outside the grid indicate the sum of the digits in a snake with length X, that starts in the first cell next to the clue. X is the digit in that cell. Within each sum all digits must be different. Snakes wriggle horizontally and vertically and don’t touch themselves, not even diagonally. No cell can be part of more than one snake.
Solution code: Row 7, followed by column 7.
Comments
on 21. November 2021, 06:38 by Richard
Even after a year I am still surprised about the difference in insights in the rule-description. In my opinion a snake is a single living animal, not sharing any part of his body with a colleague snake. In that case a snake with limbs, a more-headed serpent or a Siamese snake would be formed. So, as I wrote before, to me it's clear as possible.
But since so many comments are written now, I have added a sentence to the instructions for those who might consider to solve this puzzle in the future.
on 21. November 2021, 06:33 by Richard
Added a sentence to the instructions.
on 20. November 2021, 16:36 by Richard
Added links for online solving. Thx Nick!
on 19. November 2021, 21:32 by Nick Smirnov
F-puzzles:
https://f-puzzles.com/?id=yjabnfza
CTC App:
https://tinyurl.com/yrw7vd8s
on 19. November 2021, 21:32 by Nick Smirnov
I was seriously stuck at this puzzle until I went to the original Willy Wonka's puzzle and read its rules. The part that said 'No cell can be a part of more than 1 snake' is absolutely crucial and is not obvious at all. I try not to read comments before I solve a puzzle, so I'm glad that there are a lot of comments about this part of rules.
on 17. February 2021, 16:38 by pin7guin
Ich finde es nicht selbstverständlich, dass sich verschiedene Schlangen keine Zellen teilen dürfen. Und OHNE diese Regel ist das Sudoku nicht bzw. nicht eindeutig lösbar.
Bevor ich nochmal alle Kommentare gelesen habe, hatte ich lange herumgeknobelt und keinen Einstieg gefunden.
Mit dem Zusatz ging es gut und flüssig logisch durch.
on 13. November 2020, 04:18 by Willy Wonka
Thanks for a fun puzzle Richard, great use of the ruleset! Your ability to create puzzles that are very interesting without being insanely difficult always amazes me!
——
@Willy Wonka: thanks for the kind words. Thank you for the idea; without ideas there would be no SVS! :-)
on 12. November 2020, 18:51 by AnnaTh
Well, I think the rule that two snakes must not cross should be added.
on 11. November 2020, 13:10 by Richard
I didn’t think of such an addition to the rules because for me it’s as obvious as possible. (Sorry, don’t mean to be rude.)
on 11. November 2020, 13:05 by Senior
Correct. I disregarded this rule and then found around 1000 solutions.
on 11. November 2020, 10:53 by Statistica
I think, you have to add the rule "No cell can be a part of more than 1 snake." :-)
on 11. November 2020, 04:45 by Dina
Fun solve and fairly easy! :-)
on 11. November 2020, 01:42 by cdwg2000
Haha，Different snakes cannot cross but can be adjacent to each other.
Very nice，thanks Richard！
