Monday, June 30, 2025

Genre Spotlight 47: City Space (Puzzles 352 and 353)

One more shading genre!  Today's type is City Space, a somewhat obscure type invented by RSP a few years ago.  It has Cave/Kurodoko clues but also reminds me of Nuribou and Guide Arrow in some ways.

Rules: Shade some cells so that each orthogonally connected area of shaded cells is in the shape of a one-wide rectangle of at least two cells. All unshaded cells must form one orthogonally connected area, which contains no complete loops of cells (this includes 2x2s). Clues cannot be shaded, and represent the total number of unshaded cells that can be seen in a straight line vertically or horizontally, including itself.

           

The first puzzle is easier and larger, but took a very long time to construct.  My goal was to make a grid that was both smooth and clue-sparse; those two properties were at odds with each other.

Puzzle 352 (Penpa)

 

The second puzzle was made slightly on accident. I originally had another pair of clues but had to remove them; it turned out the puzzle was still unique. (These constraints are powerful!)

Puzzle 353 (Penpa)

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