Binary

Suns and moons: balance every row and column.

Fill the board with suns and moons: never three of the same in a row, as many of each in every row and column, and no row or column repeated. From 6×6 to 12×12, always with a single solution you can find with logic.

How to play

• Fill every cell with suns and moons. Fixed pieces (smaller, with a dark dot in the center) can’t be changed.
• There can never be three identical pieces in a row in any row or column.
• Every row and column has as many suns as moons (3 and 3 on the 6×6, 4 and 4 on the 8×8…). The markers on the right and bottom keep count and turn green when the line is right.
• No two rows or two columns can be the same. Anything that breaks a rule is marked in red.
• Tap a cell to place a sun, again for a moon and once more to empty it; drag to place the same piece on several. With a keyboard: arrows, Space, 1 (sun), 2 (moon), 0 (empty), Z undoes and P pauses.
• Every board has a single solution and can be solved without guessing. If you get stuck, buy a hint with Pupicoins (5 to 20 depending on difficulty, H key): it fixes a wrong piece or places the next one and explains why. With hints, your time doesn’t count toward your best.

Binary: online race

Everyone gets the same Binary puzzle at the same time. The first to fill it in while following all three rules wins.

Puzzle · free, no sign-up · More games on Pupito