Fill every cell with ☀️ or 🌙. Two rules apply to the whole grid, plus one to any cells joined by a = or × mark.
Every row and column ends with an equal count of suns and moons — and never 3 in a row of the same symbol.
= means those two neighbors must match. × means they must differ.
- Click a cell to cycle it: empty → ☀️ → 🌙 → empty.
- Not every cell touches a = or × mark — those only apply where the mark is actually printed between two cells.
- Fill the whole grid without breaking any rule and you've solved it.
