Binary Puzzle
Play Binary Puzzle free online: fill an even grid with 0 and 1 so every row and column has equal counts, with no three identical in a row and no duplicate rows or columns. 9 hand-verified puzzles across easy, medium and hard tiers, with undo, restart and a three-cell hint budget. No download, no sign-up.
Play Binary Puzzle
Tap an empty cell to select it, then tap 0 or 1 (or click the cell again to cycle empty to 0 to 1 to empty). Arrow keys move the selection between cells. A digit that breaks a rule — three in a row, an unequal count, or a duplicate row or column — is highlighted, so you can check your work without a solver. Undo steps back one entry, Restart reloads the puzzle, Hint reveals one correct cell (three per puzzle), and the Prev / Next buttons move between puzzles inside and across tiers.
Loading game...
Objective: Fill every empty cell with 0 or 1 so that each row and each column contains an equal number of 0s and 1s, no three identical digits sit next to each other in a row or column, and no two rows and no two columns are identical. Every puzzle has exactly one solution. There are nine puzzles across three tiers — easy (6x6), medium (8x8) and hard (10x10) — each verified to admit exactly one completion before it shipped. Controls: Tap (mouse, touch or pen, all handled as one tap) an empty cell to select it, then tap 0 or 1 on the pad or press 0 or 1 on the keyboard; tap X or press Backspace to clear. Arrow keys move the selection. Buttons: tier (easy / medium / hard), Prev / Next puzzle, Undo, Hint, Restart, Rules. The HUD shows the tier, which puzzle you are on, how many cells are filled and how many hints are left. Keyboard and touch follow the same code path.
🎮 Just launched — be one of the first players!
Can't play? Report a problem
If the game doesn't load, you canopen it in a new tab。
Source and license
Binary Puzzle (Binairo / Takuzu) is the classic even-grid 0/1 puzzle: the mechanic has no single author, so this build is written from scratch by Playnesta with no byte-reused game files. The rules engine (js/engine.js: conflict detection for three-in-a-row, count and duplicate rows/columns, solved check), the frozen puzzle library (js/puzzles.js: nine offline-generated puzzles, each proven to admit exactly one completion), the shell (js/main.js), the stylesheet, the analytics bridge and the touch shim are all Playnesta-original (MIT, see LICENSE.txt in the package). During selection (2026-10-16) the certified upstream search came back with no self-hostable interactive base: every JavaScript repository returned carried no licence or was a solver/generator only (AndreasVJ/Binairo-Solver, rdaems/binairo-solver, aiden2480/binary-puzzle), so no bytes are copied and no file under any third-party licence is redistributed. Playnesta Games is the developer and publisher of this web implementation. https://github.com/AndreasVJ/Binairo-Solver · MIT
Game facts
- Developer
- Playnesta Games
- Publisher
- Playnesta Games
- Genre
- Puzzle, Logic
Playnesta guides
No Playnesta guides for this game yet. Browse this game's guides.
More games to play
More free browser games on Playnesta — pick your next round.
Last verified 2026-10-17 12:30 UTC. Information can change; follow the linked source for the latest details.