Graffiti snake:
Paint some
cells black to create walls. The numbersoutside the grid indicate the lengths
of blackenedcell blocks in the corresponding directions, in order; as in a
Paint By Number puzzle. If there is more than one blackened block in a row or
column, theremust be at least one white cell between the blocks. After all
black cells are determined, a snake should travel through all the unoccupied
cells,moving horizontally or vertically without touchingitself, even
diagonally. The head and the tail of the snake are given in circle.
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