Logic Masters Deutschland e.V.

Normal Sudoku rules apply. Let's play snake!
The snake starts at the circle and grows horizontally and vertically. In cells where the snake starts or turns, the digit in that cell gives the number of cells until the snake turns again.
The snake starts with 4 energy and must spend 1 for each cell it grows, including the starting cell. Every time it eats an apple (enters a shaded cell) it gains energy equal to the value of the apple cell, which adds to any remaining energy. It must find another apple before it runs out of energy in order to continue. The golden apple is worth twice the value in its cell.
The snake cannot turn on an apple, but must turn at least once between each apple.
The value of the apples is exactly enough for the snake to grow to visit every cell in the grid exactly once, finishing at the square.

Here is an example whith exactly the same rules. The snake starts with 4 energy and gains just enough from the apples to fill the grid.

Note that the path restriction here is slightly different from my recent puzzles, but is the same as some earlier ones. Let me know which you think is more interesting.

Play online: SudokuPad