Sun and Moon: Binary Puzzle

Sun and Moon is a binary logic puzzle. Fill the grid so every row and every column has as many suns as moons, and never put three of the same next to each other. The small signs between cells add one more clue: = means the two match, × means they don't.

I ran all 800 puzzles through a solver that thinks the way a person does. Every board has exactly one answer, and you can reach it without guessing.

The packs are Easy 6x6, Medium 6x6, Hard 8x8 and Expert 10x10, with 200 boards each, and nothing's locked. On 10x10 you'll weigh whole rows before the next cell gives way.

The daily puzzle runs 6x6 early in the week, 8x8 from Thursday to Saturday and 10x10 on Sunday.

Hints point at the cells that matter and say why, like "This column already has 3 suns. Both empty cells are moons." There's a dark Twilight theme and a color blind mode with patterns on the suns and moons. It works offline.