Puzzle 248 (Slitherlink) [Interior Path]

This is a Saturday Slitherlink puzzle, with a twist. The clues have their usual meaning and there is still a single loop to draw. But after drawing this loop, you must also be able to draw a path passing through adjacent grid squares that visits every square inside the loop exactly once. The path starts and ends at a different square, and although it may not be uniquely determined, one must exist.

Puzzle 248

Puzzle 248

A clue layout that is quite sparse. But then again, the new rule here is a huge constraint, so that shouldn’t be too surprising.


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6 Responses to “Puzzle 248 (Slitherlink) [Interior Path]”

  1. Georgi Says:

    Wow, this was really fun. It sure is a huge constraint, especially after one spots the beginning and end of the path. If they weren’t easy to spot at an early stage, I imagine the puzzle could get even harder.

    • MellowMelon Says:

      That the start and end were easy to spot was intentional, in the same way that I try not to leave the start and end ambiguous for too long in my Right Face puzzles. Personally I find that when they’re unknown, trying to use logic anywhere becomes downright annoying because there’s so many cases to consider.

      But yes, it would make it harder.

  2. TheSubro Says:

    I am ignoring your mindless Akari design puzzle, and your Mega-Nurikabe for the moment, and I have to say what a great puzzle to go out on here with this Slitherlink Interior Path puzzle. Great combination of logic steps here. Great concept. Great execution. You go out on the top of your game with this one.



  3. Giovanni P. Says:

    Just finished this one a little while ago. I really like how you pull some Corral-esque steps into this variation, especially with how the “must be outside” cells connect to the edges eventually.

  4. Giovanni P. Says:

    I think I will, and I am enjoying it. Especially since it it a more proper version of a “sparse clue layout”. Still need to work out the left side though šŸ˜›

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