Snake Sum Sudoku 3
(Published on 4. July 2020, 00:00 by Quarterthru)
Snake Sum Sudoku 3
Normal sudoku rules apply except that the regions are irregular.
Additionally, a snake has to be drawn into the grid. The head and tail of the snake are in the two cells with the grey circles. The snake may not touch itself orthogonally, but it can touch itself diagonally.
The clues outside the grid indicate the sum of the digits located on the snake in the corresponding row/column. Considering "Snake" and "non-snake" as two colors, the given digits show how many cells orthogonally connected to the given are of a different color to the color of the given cell itself. All such possible digits are shown. NOTE: Digits placed by the solver CANNOT be true or they would have been given
Givens can be on or off the snake.
Here is a link to the puzzle on penpa
Solution code: Row 3 and Column 6
Comments
on 12. July 2020, 14:32 by marcmees
snakes seem to reproduce faster than I can kill them - very nice
on 6. July 2020, 08:28 by henrypijames
Honestly I think the ones we've had are already hard enough for the CTC. If you're saving an even harder one for them, it might just be too much.
on 6. July 2020, 02:50 by Quarterthru
Don't worry @henrypijames, the 5th one is a beast. lol.
on 6. July 2020, 00:45 by henrypijames
@Quarterthru: That sounds like a threat, I might skip the next one then. :D But seriously, I prefer stronger interplay between the snake and the sudoku, like the last one.
on 4. July 2020, 19:12 by Quarterthru
Yes, it's pretty much a direct relation, easy snake hard Sudoku. Harder snake, easier Sudoku. My next one has a super easy snake...
on 4. July 2020, 14:37 by henrypijames
Snake was easy this time - perhaps too easy, making the remaining sudoku quite hard, because the snake wasn't helping to fill the digits.
on 4. July 2020, 10:08 by r45
Bravo, ein super Rätselspaß.
