Last time I uploaded a tapa puzzle I accidentally made it easier than I intended to, however this time the puzzle is not easy, as you are not going to get anywhere without finding where the ends of the snake are. Not sure of the exact difficulty of this one as I am unsure of how hard the initial trick is to spot.
All standard tapa rules apply, those being: Shade some empty cells black to create a single connected wall. Numbers in a cell indicate the length of consecutive shaded blocks in the neighboring cells. If there is more than one number in a cell, then there must be at least one white (unshaded) cell between the black cell groups. Cells with numbers cannot be shaded, and the shaded cells cannot form a 2×2 square anywhere in the grid.
This puzzle also follows snake rules. Two of the shaded cells are the "ends" of the snake and only border one shaded cell. Every other shaded cell in the grid borders exactly two other shaded cells. The snake can touch itself diagonally
Finally, cells with squares inside of them cannot be shaded and cannot border the end cells of the snake.
Lösungscode: The number of shaded cells in each column for the first 6 columns. No spaces
am 15. Juli 2020, 09:04 Uhr von athin
@Puzzle_Maestro Ah I missed that! Yes now it's unique, thanks :)
am 15. Juli 2020, 08:25 Uhr von Puzzle_Maestro
@athin in the rules, there is an addition: 'cells with squares inside of them cannot be shaded and cannot border the end cells of the snake.' Does this make the puzzle unique for you?
am 15. Juli 2020, 04:34 Uhr von athin
Sorry, I think the solution is not unique, I found at least 2 answers.
am 14. Juli 2020, 14:57 Uhr von emmettcito
Added the distinction that the snake can touch itself diagonally and added a small constraint regarding where the ends of the snake can be located to prevent a uniqueness issue.
am 14. Juli 2020, 14:09 Uhr von Puzzle_Maestro
You should explicitly state in the rules that the snake can touch itself diagonally, because in general, snakes cannot touch themselves diagonally.
am 14. Juli 2020, 12:10 Uhr von stefliew
Sorry, I did misunderstand the rules a bit and thought that the two snake ends had to be in two of the cells with squares and the remaining cells with squares would be unshaded while bordering exactly two shaded cells. That clears my confusion.
am 14. Juli 2020, 11:45 Uhr von emmettcito
@stefliew the snake can touch itself diagonally. The only restriction of the snake rule is that shaded cells must border exactly two shaded cells, and diagonally adjacent cells don't share a border. Also your observation about the 1-1 clue is correct. I should have clarified better that finding where the ends of the snake are is part of solving the puzzle.
am 14. Juli 2020, 03:49 Uhr von stefliew
Just to clarify, can the snake touch itself diagonally? Some puzzles can and some puzzles can't.