Play 8x8 Binary Puzzle Games

The classic everyday size, with enough space for satisfying chains of deductions. Choose any difficulty from the game controls.

Practice puzzle8x8 Medium

0:0056% filled

Tap a cell to cycle it, or use arrow keys with 0, 1, Backspace, and Delete.

Binary Puzzle · Paper edition

8×8 Medium puzzle

Fill every empty square with either 0 or 1.

Practice puzzleOne unique solution

NameDateTime

110101011001110001001010101001101001

Three rules

Keep it balancedEvery row and column contains 4 zeros and 4 ones.
Avoid triplesNo more than two identical numbers can be next to each other.
Make every line uniqueNo two rows and no two columns can be exactly alike.

Balance every lineEach row and column uses the same number of 0s and 1s.

Never make threeThree matching values cannot touch in a horizontal or vertical run.

Keep lines uniqueNo completed row or column can repeat another line.

Read all rules

What changes on a 8x8 grid?

Each row and column needs 4 zeros and 4 ones. The rules stay identical, while the number of interacting line patterns grows.

ScanResolve visible pairs before counting the line.

BalanceStop adding a value when its half-line quota is reached.

CompareUse completed lines to remove duplicate candidates.

Play 8x8 Binary Puzzle Games

The classic everyday size, with enough space for satisfying chains of deductions. Choose any difficulty from the game controls.

Practice puzzle8x8 Medium

0:0056% filled

Tap a cell to cycle it, or use arrow keys with 0, 1, Backspace, and Delete.

Binary Puzzle · Paper edition

8×8 Medium puzzle

Fill every empty square with either 0 or 1.

Practice puzzleOne unique solution

NameDateTime

110101011001110001001010101001101001

Three rules

Keep it balancedEvery row and column contains 4 zeros and 4 ones.
Avoid triplesNo more than two identical numbers can be next to each other.
Make every line uniqueNo two rows and no two columns can be exactly alike.

Balance every lineEach row and column uses the same number of 0s and 1s.

Never make threeThree matching values cannot touch in a horizontal or vertical run.

Keep lines uniqueNo completed row or column can repeat another line.

Read all rules

What changes on a 8x8 grid?

Each row and column needs 4 zeros and 4 ones. The rules stay identical, while the number of interacting line patterns grows.

ScanResolve visible pairs before counting the line.

BalanceStop adding a value when its half-line quota is reached.

CompareUse completed lines to remove duplicate candidates.

Play 8x8 Binary Puzzle Games

What changes on a 8x8 grid?

Keep the next challenge close

Play 8x8 Binary Puzzle Games

What changes on a 8x8 grid?

Keep the next challenge close