Puzzle 351 (Tapa) [Invertible]

This is a Tapa puzzle, with a twist. The restriction that clues must be unshaded is lifted. Unshaded clues function like normal Tapa clues. But if a clue is shaded, then those numbers tell the length of each consecutive white cell block in the surrounding squares (possibly including unshaded clues), with each block separated by at least one black cell (possibly a shaded clue).

Puzzle 351

Puzzle 351


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6 Responses to “Puzzle 351 (Tapa) [Invertible]”

  1. mathgrant Says:

    That was really tough, but creative.

  2. Rob Says:

    I think these are the same rules as the Twilight Tapa on the Rätselportal. I thought I’d seen one of these in some contest, but can’t find one now…

  3. Serkan Yurekli Says:

    Yes, this variation was developed at nearly same time by three different puzzlers: Nils Miehe (Germany), Hasan Yurtoglu (Turkiye) and Andrey Bogdanov (Russia). As you know, before begining of TVC each year we asked all puzzlers to share variation ideas with us.

    When Nils (Calavera) published this, I know Hasan had made same puzzle for 24 HPC. So I cannot decide which one created firstly, and so I didn’t use this in TVC’s. Last year Andrey came with same idea. This puzzle has three names: Twilight Tapa by Nils, Tapaakkara by Hasan, Akkara Tapa by Andrey.

    This year I will make an index of Tapa variations. Thus everyone can see all available variations, and so they can suggest different ideas considering the index. Also, every designer/idea owners can be easily credited in index.

  4. TheSubro Says:

    Great puzzle. Fun to work through.

    Learned a lot about 5 squares and 2/1 squares and how to use their limitations to constrain the paths.

    Its all good, just glad it was not on any test.

    Thanks,

    TheSubro

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