Byna Grid: Binary Logic Puzzle

☀️ SUN. MOON. BALANCE. 🌙

Every cell holds a sun or a moon. Place them by pure logic under three simple rules — and let the satisfying click of a fully balanced grid reward your deduction.

🌗 THE THREE RULES
• No three suns or three moons in a row (across or down)
• Each row and column has equal suns and moons
• No two rows are identical, and no two columns are identical

🌓 HOW TO PLAY
• Tap an empty cell to cycle: sun → moon → empty
• Fixed clue cells are locked (marked with a dot)
• Cells flash a red outline when they break a rule
• Fill the whole grid correctly to win

✨ FEATURES
• 150 puzzles: 6×6, 8×8 and 10×10 grids
• Every puzzle is generated from a complete valid solution — always solvable
• Live rule-breaking highlights help you learn the logic
• Clean celestial visuals and a calm ambient soundtrack
• Haptic feedback
• 100% offline, no ads, no purchases, zero data collection

🧠 THE BINAIRO / TAKUZU CLASSIC
Also known as Binairo, Takuzu, or Binary Sudoku — a pure deduction puzzle with three crisp rules and surprising depth. No guessing, no luck, just balance.

Balance the grid. Master the rules. ☀️🌙