How to Play Binairo+
An extended Binairo variant with additional diagonal and region constraints for an extra challenge.
Try it now — Easy 10x10 →The Rules
- All standard Binairo rules apply (no three in a row, equal counts, no duplicate rows/columns)
- Additional diagonal balance constraints restrict which cells can hold 0 or 1
- Region constraints may further limit valid placements in marked areas
- All constraints must be satisfied simultaneously for a valid solution
Available in 3 sizes (8x8, 10x10, 12x12) and 3 difficulty levels (normal, hard, expert).
See It in Action
Binairo with extra diagonal and region constraints for a harder challenge
How to Play
- Apply standard Binairo techniques first: pairs, full-count rows, no-duplicate checks
- Use diagonal constraints: treat diagonals like rows — no three in a row and balance the counts
- Apply region rules after standard deductions — regions restrict their member cells further
- Iterate between all constraint types until the grid is complete
Pro Tips
Master standard Binairo before attempting Binairo+ — the extra rules build on the basics
Diagonal sums work like row/column sums: count existing values to determine remaining cells
When two constraint types narrow a cell to the same forced digit, act on it immediately
Frequently Asked Questions
How is Binairo+ different from Binairo?
Binairo+ adds extra constraints beyond the standard rules, such as diagonal balance requirements or additional region rules, making it significantly harder.
Choose Your Challenge
Start with easy to learn the rules, then progress to harder difficulties.