Tap a cell: ☀️ → 🌙 → empty · no three in a row · equal suns and moons in every line · obey = and ×
Sun & Moon is a binary logic puzzle, the same family as Takuzu and Binairo, rebuilt for kids and puzzle fans in the browser. Every cell takes a sun or a moon. No more than two of the same symbol can touch in a line, every row and column needs an equal split, and the little = and × signs between cells tell you which pairs match and which are opposite. Each grid is generated so it has exactly one answer that you can reach by careful reasoning, with no guessing. Start with a gentle 4×4, move up to the classic 6×6, or take on a tough 8×8. Come back each day for the shared Daily Puzzle. Rule breaks are highlighted as you play, and the hint button explains why a cell must be a sun or a moon, so children aged 6 and up learn real deduction rather than trial and error.
More games: Sudoku, Crown Puzzle, Number Road.