Why 4×4 first
A 9×9 grid asks a child to hold nine digits, nine rows, nine columns and nine boxes in mind at once. A 4×4 grid asks for four of each — few enough that a five-year-old can see the whole board and reason about all of it.
The rule is identical: every row, every column and every 2×2 box holds each of 1, 2, 3 and 4 exactly once.
Doing one together
- Point at a row that already has three numbers and ask which one is missing.
- Do the same for a column, then for a box — that covers every rule in the game in three questions.
- When the easy cells run out, pick a digit and ask where it could go in one box.
- Let them fill in the last few unaided. Finishing is the point.
What comes next
When 4×4 grids start being finished in under a minute, move to the 6×6 mini grids: six digits and rectangular boxes, which is a real step up without being the full game. After that, easy 9×9 is within reach.
For the classroom or a car journey, print a sheet of kids' puzzles — four to a page, answers at the end.
Common questions
What age is 4×4 Sudoku for?
Most children manage it from about four or five, as soon as they can recognise the digits 1 to 4 and notice repeats.
Is it really Sudoku?
Yes — same single rule, smaller board. The reasoning a child does on a 4×4 grid is exactly the reasoning used on a 9×9 one.
Can I print these puzzles?
Yes, from the printable kids' page, with an answer sheet at the end.
Are there bigger puzzles for older children?
The 6×6 mini grids sit between 4×4 and the full game, and easy 9×9 suits most children from about eight.