Logic Masters Deutschland e.V.

Divide the grid along the boundary lines so that every cell belongs to a snake. A snake is a one-cell-wide path at least two cells long that does not touch itself, not even diagonally. Colored cells must be at one of the ends of a snake. Two snakes of the same length may not touch orthogonally.

Clued cells must be part of a snake with a length of exactly that number of cells. Same letters replace the same number, different letters replace different numbers.

Snakes may have any amount of any type of clue.

An unencrypted 7x7 example is provided:

SudokuPad

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