Every grid uses the numbers 1 to 4. In each row, each column and each of the four small 2x2 boxes, every number may appear only once.
Look closely at which numbers already stand in a row, column or box, then you know which one is missing.
Example
- 2,2,4,4,2,1,1,2,4
For parents
What does this exercise practice?
Mini sudoku trains logical elimination instead of calculating; children learn to keep several rules in mind at once and narrow things down step by step.
Common pitfalls
Children often overlook the box rule and check only the row and column. Remind them to also look at the number's small 2x2 box.
How to practice at home
Draw an empty 4x4 grid with four 2x2 boxes on paper and fill in a few numbers together. Who finds a missing number first?
Related: Magic square