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Moon-or-Sun (adapted from Nikoli)

  • Draw a line to make a single loop.
  • Lines pass through the centers of cells, horizontally, vertically, or turning. The loop never crosses itself, branches off, or goes through the same cell twice.
  • A rectangle, bordered by bold lines, is called a "room".
  • Color each room blue or yellow.
  • The loop must visit each room once, alternating between blue and yellow rooms.
  • In a blue room, you must visit all of the moons and none of the suns; in a yellow room, you must visit all of the suns and none of the moons.
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  • $\begingroup$ Seeing the misunderstanding and all that, I'd like to ask clearly: passing through a room WITHOUT a sun or moon counts as part of the sequence? (Ex: Can't go moon-moon but can go moon-blank-moon?) $\endgroup$
    – Belhenix
    Commented Sep 2, 2019 at 17:37
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    $\begingroup$ A suggestion for rephrasing the rules to account for empty rooms: "Color each room blue or yellow. Draw a loop visiting each room once, alternating between blue and yellow rooms. In a blue room, you must visit all of the moons and none of the sums; in a yellow room, you must visit all of the suns and none of the moons." $\endgroup$
    – Deusovi ♦
    Commented Sep 2, 2019 at 19:46
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    $\begingroup$ Welp, got to admit that indeed the original rules may confuse the solver when they are given empty room. For @Belhenix , that's correct: can't go moon-moon but moon-blank-moon is okay (if the second room doesn't contain any sun). And Deusovi , I like and agree with the suggestion, will update the rules accordingly. $\endgroup$
    – athin
    Commented Sep 2, 2019 at 22:45

1 Answer 1

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I think this is the answer to the first one

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And here is the second one

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  • $\begingroup$ And yep, they are the correct answers! $\endgroup$
    – athin
    Commented Sep 3, 2019 at 2:40

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