Toroidal Snake II
(Published on 9. March 2018, 00:22 by zhergan)
Find a snake of unknown length. Head and the tail of the snake are already predetermined. The snake goes from cell to cell vertically or horizontally, but not diagonally. The snake does not touch itself, not even diagonally. The numbers outside the grid indicate how many squares are used by the snake in that row or column. Additionally in this variant the grid is a torus, i. e. the left and right border of the grid as well as the upper and bottom border are connected.
Solution code: First give the length of the snake and then row 9, followed by column 5. 'S' for snake, '-' for an empty cell.
Comments
on 22. February 2021, 04:02 by xiao01wei
more than 5 star difficulty, i dont know how to solve it logically, and i have to try all possibilities by program
