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Binary puzzle: 6 by 6
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6 by 6
Fill each box with 0 or 1:
1. No three same digits next to or under each other.
2. Each row and column has as many 0s as 1s (3 of each).
3. No two rows are the same, and no two columns.
1
0
0
0
1
0
0
1
1
1
0
1
1
0
0
For parents
How it works
about 25 minutes
·
challenging
First look for two of the same digit next to each other: the boxes before and after must be the other digit.
Is there a gap between two of the same digit (0 . 0)? Then the other digit goes there.
Count along each row: are there enough zeros already? Then the rest are ones. There's exactly one solution.
Answers (for parents)
Answers
1
0
1
1
0
0
1
1
0
1
0
0
0
1
0
0
1
1
1
0
1
0
1
0
0
1
0
1
0
1
0
0
1
0
1
1
0
1
0
1
0
1
0
0
1
0
1
1
1
1
0
0
1
0
0
0
1
1
0
1
1
0
1
0
1
0
1
1
0
1
0
0
Answers
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What you need
Pencil
For writing, drawing and tracing lines
Colouring pencils
· optional
For fine areas and small hands
Binary puzzle: 6 by 6 · Kleurhoek