Logic Masters Deutschland e.V.

Martytram Snake

Made this puzzle for marty_sears birthday as appreciation to him for being a good collaborator and also making good puzzles for all of us!

Rules:

Normal sudoku rules apply. Draw a snake in the grid. The snake is a one-cell-wide path of orthogonally connected cells which may touch itself diagonally but not orthogonally. The snake acts as a palindrome i.e. it reads the same in both directions. Furthermore, a digit on the snake indicates exactly how many times that digit appears on the snake. A black arrow cell counts how many snake cells are being pointed at altogether by its arrow(s), and this combined total is displayed on the arrow cell (the arrow cell itself is never part of the snake.) Vision is not obscured by the other non-snake cells. Also, for every black arrow there is at least one snake cell in that direction being pointing at. However, red arrows never point at any snake cells. Not all possible black or red arrows are necessarily given.

CTC