Kids sudoku generator.
4×4 for the littlest solvers, 6×6 when they are ready for more. Three gentle levels — the difference is just how many numbers start filled in.
Every puzzle has exactly one answer and can be solved by simple scanning — no guessing, no advanced tricks. Just right for new solvers. Free, no signup, no watermark.
Starting a child on sudoku.
Each row, each column, and each outlined box holds every number exactly once — 1–4 for the 4×4, 1–6 for the 6×6. There is nothing else to learn.
Lots of numbers are already placed, so the first win comes fast. Finishing one puzzle is what makes a child want the next.
Find a row, column, or box that only needs one more number. Ask which one is missing — write it in. Each answer opens up the next.
When Easy is quick, go to Medium, then Hard, then the 6×6. Every level is still pure scanning — your child will never need to guess.
Kids sudoku FAQ.
What age is each size for?
Rough guide: 4x4 suits about ages 4–7 (numbers 1–4, four little 2x2 boxes), and 6x6 suits about ages 6–10 (numbers 1–6, 3-wide by 2-tall boxes). Every child is different — start one size down if you are unsure; success builds momentum.
Can my child solve these without help?
Yes — that is the design goal. Every puzzle is constrained so it can be finished by pure scanning (spotting the missing number in a row, column, or box). There is never a need to guess or use an advanced technique, so a child does not get stuck and frustrated.
Do they have answers?
Yes. Leave 'Include answer key' checked and the solutions print after the puzzles, each labeled with the same id as its puzzle so a parent or teacher can check at a glance.
Is every puzzle different, and does it have one answer?
Both. Each click makes fresh puzzles, and every one is verified to have exactly one solution before it prints — a child will never hit a puzzle with two possible answers (which is confusing and demoralizing).
Are there picture or shape versions for pre-readers?
Not yet — these use numbers 1–4 and 1–6 today. A picture/shape edition for pre-readers is on the list. (A 4x4 with numbers still works well for many pre-readers, since it is just matching four symbols.)
Can teachers print a class set?
Yes — print as many pages as you like for a classroom, homeschool, or rainy-day activity. No signup, no watermark, no attribution required. It is genuinely free.