How to solve sudoku (for kids)
How do you solve sudoku? A kids' method for 4×4 and 6×6 sudoku: row scanning, elimination and checking. Free sudoku PDF and online practice.
One-sentence rule
In every row, column and box, each number (or picture) once appears. 4×4 sudoku uses 1–4, 6×6 sudoku uses 1–6.
Solved in 4 steps
- Row scan: If a row is missing just one number, write it in: the easiest first step.
- Column and box: Do the same check for the column and the 2×2 box.
- Elimination: Count on your fingers which numbers can't go in an empty square; one option is left.
- Check: When done, check every row, column and box out loud.
Let's think it through with an example
If a row has 1, 3 and 4, only 2 can go in the empty square. Asking "Which number is missing in this row?" teaches far more than giving the answer.
In what order should we go?
Picture-based for non-readers Picture Sudoku ; ages 6–8 with 4×4 numbers, ages 9–12 with 6×6 Number Sudoku . Learn more: sudoku PDF guide for kids.
📄 Number Sudoku 4×4 Practice (free PDF)
Levelled next steps: packs
- Picture Sudoku 4×4 Pack — 48 puzzles, ages 6–8
- Number Sudoku 6×6 Pack — 48 puzzles, ages 9–12
- Way Home Mazes — 30 mazes, ages 6–8
All packs are A4 PDFs with solutions; prices include VAT, payment via Payhip.
Start for free
- Free activity PDFs — download and print right away.
- Puzzle of the Week — three new puzzles every Monday.
- Puzzle of the Day — one a day on screen.
- For more printable puzzle packs (A4 PDF with solutions, prices incl. VAT).
Frequently asked questions
What's the rule of sudoku?
Each number appears once in every row, column and box.
How do you give a hint to a stuck child?
Instead of giving the answer, ask "Which number is missing in this row?"
Does sudoku help with maths?
It doesn't teach arithmetic, but it builds elimination, reasoning and patience.