Logic Masters Deutschland e.V.

Normal sudoku rules apply.

Coloring: Color every cell either pink or green such that each color forms an orthogonally connected region of the grid.

Circles and Boxes: Circled cells are pink and boxed cells are green. A digit in either a circle or box counts how many cells of the same color (pink/green) it sees in the row and column, including itself. Cells of the other color block vision. All such circles and boxes are given.

Interleaving Snakeban: The gray line forms an interleaving snakeban. The box borders divide the line into segments. If the line enters the same box multiple times, these are counted as separate segments. These segments alternate between being all green and all pink. In addition, the sums of these segments form a consecutive sequence of values, which can appear in any order along the line.

Chameleon: Furthermore, the snake is in fact a chameleon! When the line is colored pink, it forms a renban line for that segment; and when the line is colored green, it forms a german whispers line for that segment. Renban lines contain a consecutive set of digits which can appear in any order along the line. Adjacent digits on a german whispers line must differ by at least 5.

Play in the CTC App

If you enjoyed this puzzle and the logic of the consecutive segment sums, check out my slightly easier puzzle, Killer Snakeban or my slightly harder puzzle, Whispering Snakeban: