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Kids sudoku · free & printable

Sudoku for Kids (Free Printable 4×4, 6×6 and 9×9, Ages 4 to 10)

Sudoku built for young solvers: 4×4 for the littlest, 6×6 when they are ready, the full 9×9 from about nine, decorated fun and rainbow designs, and a page tuned to each age from four to ten. Every puzzle has one answer and finishes by simple scanning: no guessing, no tricks, no getting stuck.

By age

Sudoku by age: a page for each year from 4 to 10

Each page preloads the right grid size and starting tier for that age, shows what the sheet looks like, and answers the questions parents ask at that age.

4×4
Sudoku for 4 year olds
Beginner, mostly filled in
4×4
Sudoku for 5 year olds
Easy, kindergarten
6×6
Sudoku for 6 year olds
First 6×6, first grade
6×6
Sudoku for 7 year olds
Easy to Hard, second grade
6×6
Sudoku for 8 year olds
Hard, and a first 9×9
9×9
Sudoku for 9 year olds
Easy, fourth grade
9×9
Sudoku for 10 year olds
Medium, fifth grade
What you print

The kids sudoku sheets, printed

Page one of a real PDF from each generator and size. Click any to open its page.

A single large four-by-four kids sudoku on a page with only three empty cells and big bold digits 1 to 4

4×4 for ages 4–5

Numbers 1 to 4, Beginner tier.
A six-by-six kids sudoku with roughly half the cells empty and bold digits 1 to 6

6×6 for ages 6–8

Numbers 1 to 6, Easy tier.
A large nine-by-nine kids sudoku at Easy with many givens filled in and the standard three-by-three boxes

9×9 from age 9

The full grid, well filled in.
Blue-sky kids sudoku sheet with six balloons on strings spelling SUDOKU above a 6×6 grid and small clouds

Fun designs

Balloons, gumballs or candy stripes.
Kids sudoku sheet with a full rainbow arch over glossy SUDOKU letter pills and a 6×6 grid on a pale pink panel

Rainbow designs

Three rainbow cards.
Four small four-by-four kids sudoku puzzles arranged two by two on one page with ids beneath each grid

Class set, four per page

The plain generator at four per page.
The three tools

Plain generator, fun designs and rainbow designs

Generator · 4×4 · 6×6 · 9×9
Kids Sudoku Generator
Pick a size and a gentle tier, print with an answer key. Up to four per page for a class set; the cheapest print for a whole room.
Start →
Decorated · 3 designs
Fun Kids Sudoku
The same gentle puzzle wrapped in Gumball Pop, Balloons or Candy Stripe. One or two per page, party-ready.
Start →
Decorated · 3 designs
Rainbow Sudoku
Rainbow Pop, Rainbow Rave or Peachy Cloud around the same puzzle. The party-bag and pastel-nursery set.
Start →
For parents and teachers

Starting a child on sudoku

There is one rule: each row, column and outlined box holds every number exactly once, 1 to 4 on the 4×4 and 1 to 6 on the 6×6. Nothing else to learn. Begin at 4×4 with lots of numbers already placed, so the first win comes fast; finishing one puzzle is what makes a child want the next. Then point to a row, column or box that needs one more number, ask which one is missing, and let them write it in. Each answer opens the next.

Level up by feel. When Easy is quick, go Medium, then Hard on the same grid, then the next size. Every kids tier is still pure scanning, so a child never needs to guess; the first real technique does not appear until the 9×9 at Medium around age ten, and the how to play sudoku page covers it when they get there. Classrooms map grade to grid the same way: kindergarten and first on the 4×4, second and third on the 6×6, fourth and fifth on the 9×9 at Easy, with the back to school sudoku templates for the first week of term.

More in this set

Every printable sudoku on this site

Every sudoku template on this site prints the same technique-graded 9×9 puzzle — only the frame around it changes. Pick the one that matches the occasion, or start from a blank sudoku template and write your own.

Parent questions

Sudoku for kids: questions parents and teachers ask

What age can a child start sudoku?
About four, on the 4×4 at Beginner, where only a few cells are empty and the puzzle is matching which of 1 to 4 is missing. Five-year-olds move to Easy on the same grid; six is the usual age for the 6×6; the full 9×9 suits most children from nine.
Can my child solve these without help?
That is the design goal. Every puzzle on the 4×4 and 6×6 is constrained so it finishes by pure scanning: spot the missing number in a row, column or box. No guessing and no technique is ever required, so a child does not get stuck and frustrated.
Is every kids puzzle checked for one answer?
Yes. Each puzzle is verified to have exactly one solution before it prints, so a child never meets a grid with two possible answers. The answer key prints after the puzzles with the same id under each grid.
How do I print a class set for a whole room?
Use the plain kids generator at four per page for the 4×4 or 6×6, untick the answer key for the student copies, then print the key separately. Kindergarten and first grade use the 4×4; second and third the 6×6; fourth and fifth the 9×9 at Easy.
What is the difference between kids sudoku and regular sudoku?
Grid size and the guarantee. Kids grids use 1 to 4 or 1 to 6 instead of 1 to 9, and every one is built to finish by scanning alone. The one rule is identical, so a child who learns the 4×4 already knows the 9×9.
Are the kids puzzles free for classrooms and homeschool?
Completely. Print as many as the year needs: no signup, no watermark, no attribution required. Teachers, tutors, homeschoolers and after-school programs all use them.
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Updated September 2026