LogiBrain Binary

Fill every grid with zeros and ones using logic alone. LogiBrain Binary includes 2,133 puzzles across five grid sizes and four difficulty levels, from compact 6×6 boards to demanding 14×14 challenges.

Every puzzle has one solution that can be found without guessing. Apply four simple rules: balance the zeros and ones in every row and column, never place more than two matching digits together, and make every row and column unique.

PUZZLES FOR EVERY LEVEL
- 2,133 included puzzles
- Four difficulty levels
- Five grid sizes: 6×6, 8×8, 10×10, 12×12, and 14×14
- All puzzles available to play; no puzzle packs to buy
- Play offline without Wi-Fi or mobile data

TOOLS WHEN YOU NEED THEM
- Highlight and remove errors
- Ask for a hint or reveal the complete solution
- Undo and redo moves
- Automatically save unfinished puzzles
- Continue at your own pace on phones and tablets

HOW TO PLAY
1. Place a 0 or 1 in every cell.
2. Do not put more than two identical digits next to each other.
3. Give every row and column an equal number of zeros and ones.
4. Make sure no two rows or columns are identical.

Start with a smaller grid to learn the patterns, then work your way up to the toughest 14×14 puzzles. An optional one-time purchase removes advertising; it does not unlock puzzles.

Questions, problems, or suggestions?
- Email: support@pijappi.com
- Support: https://www.pijappi.com/apps/logibrain-binary/?store=google#support