Snake Sudoku [Richards SVS]

Post Reply

Is this suitable for a Sudoku competition?

Yes
3
27%
Maybe
2
18%
No
6
55%
 
Total votes: 11

Realshaggy
Posts: 20
Joined: Sun 29 Apr, 2012 2:21 pm

Snake Sudoku [Richards SVS]

Post by Realshaggy » Wed 02 Jan, 2019 11:57 am

Rules: Place the digits from 1 tot 9 in every row, column and 3x3-block. There is a snake hidden in the grid with head and tail on the grey cells. The snake doesn't touch itself, not even diagonally. It has the form 123456789123..., starts with 1 and ends with 9.

3206-1.png
3206-1.png (11.09 KiB) Viewed 1668 times

The example is taken from Richards weekly Sudoku Variant Series at the puzzle portal of Logic Masters Germany.

https://logic-masters.de/Raetselportal/ ... &id=0002H2

I remember multiple variants with slightly different rules for the snake cells (such as "the snake contains odd digits only" or "adjacent cells on the snake contain consecutive numbers") that occured on multiple occasions. I will only post this one example as a representative.

While in these crossovers snake-hints are usually not used (numbers outside the grid give the number of snake cells in the row/column), these puzzles still introduce the concept of "finding a non-touching snake", that is an additional object in the grid that might force an additional notation. Also, this concept might be more familiar for general puzzle solver than for sudoku purists.

Post Reply