Snake Pit X by Takeya Saikachi
or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a composite mode for line/edge drawing and a number entry mode.)
Theme: X Box
Author/Opus: This is the 2nd puzzle from guest contributor Takeya Saikachi.
Rules: 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. Circled cells must be at one of the ends of a snake. A snake may contain one circled cell, two circled cells, or no circled cells at all. Numbered cells must be part of a snake with a length of exactly that number of cells. A snake may contain one number, multiple identical numbers, or no numbers at all. Two snakes of the same length cannot touch each other horizontally or vertically. Cells with an X cannot be an end of a snake.
Also see this example:
Answer String: For each cell in the marked rows/columns, enter the length of the snake it belongs to. Enter just the last digit for any two-digit number. This example has the key “33553,44664”.
Time Standards (highlight to view): Grandmaster = 1:00, Master = 1:30, Expert = 3:00
Solution: PDF
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I think that the answer string description is not clear. The example’s answer string should be enough to understand.
I thought it was 221,221.
Instead it’s 33553,44664.
Thanks for the feedback. We managed to copy the answer format from a different Snake puzzle which isn’t helpful. I’ve updated the answer string description here, which is of the format “33553,44664” for the example.