Sun & Moon: Binary Puzzle

Sun & Moon is a calm logic puzzle you can solve in a few minutes a day.

Fill every cell of a 6×6 grid with a sun or a moon, following three simple rules: • Each row and column has three suns and three moons. • No more than two of the same symbol in a row, across or down. • Cells joined by = must match; cells joined by × must be different.

Every puzzle has exactly one solution and can be solved by logic alone — no guessing needed.

FEATURES • Daily Puzzle: a new puzzle every day, the same for every player. Keep your streak going. • Practice: unlimited puzzles in Easy, Medium, and Hard. • Hints: get the next step when you're stuck. Turn on hint reasoning to see why the move works and which cells it depends on. • Share any puzzle with a link and challenge friends to solve the same one. • Undo, clear, and automatic saving — pick up right where you left off. • History and best times for each difficulty. • Light and dark appearance. • Remove all ads with a one-time purchase.