Binary Balance

How to play

Fill every cell with a circle ● or a square □. Tap a cell to cycle empty → circle → square → empty. No more than two of the same symbol side by side in any row or column; every row and column holds the same number of each; and no two rows (or two columns) are identical. Cells with a lock are given and can’t change. Check counts a mistake if any of your cells is wrong.

Frequently asked questions

How do you play Binary Balance?: Fill every cell with a circle or a square. No more than two of the same symbol may sit side by side in any row or column, every row and column must hold the same number of circles and squares, and no two rows or two columns may be identical. Cells marked with a lock are given. Tap a cell to cycle empty, circle, square.
What counts as a mistake?: Only Check presses that find a wrong cell count. Nothing is marked while you play, so you can think freely. Gold is no mistakes, silver is two or fewer.
Is today's puzzle the same for everyone?: Yes. Binary Balance is generated from the calendar date (US Eastern), so everyone gets the same grid, and each one can be solved by logic alone without guessing. It is 6×6 on Monday to Wednesday and 8×8 from Thursday to Sunday. Open a past day with ?d=YYYY-MM-DD.