How to play mini Sudoku
A mini Sudoku works exactly like the classic puzzle, just smaller. In a 4×4 grid, every row, every column and every 2×2 box must contain the numbers 1, 2, 3 and 4 — each one exactly once. Some numbers are already filled in; your job is to work out the rest.
- Tap an empty square to select it.
- Look along its row, down its column and around its box. Which numbers are missing?
- If only one number fits, tap it on the coloured keypad.
- Keep going until the whole grid is full. Stuck? Press Hint.
Tips for parents and teachers
- Start with 4×4 Easy and solve the first puzzle together, saying your reasoning out loud: “This row already has 1, 2 and 4, so this square must be 3.”
- Let children make mistakes. A number that breaks a rule turns red, which turns every error into a small lesson rather than a failure.
- Move to 6×6 when 4×4 feels easy. The jump in difficulty is gentle, and it prepares them for the full 9×9 game.
- For screen-free practice, print a worksheet from our printable Sudoku generator.
Want to know why Sudoku is such a good puzzle for young minds? Read Sudoku for Kids: A Gentle Way to Build Logic. When your child is ready for the real thing, easy 9×9 Sudoku is the next step.
Frequently asked questions
What age is 4×4 Sudoku good for?
Most children can enjoy 4×4 Sudoku from about age 5 or 6, as soon as they recognise the numbers 1 to 4. 6×6 suits ages 7 and up, or any beginner who finds the 9×9 board intimidating.
What are the rules of 4×4 Sudoku?
Fill the grid so that every row, every column and every 2×2 box contains the numbers 1, 2, 3 and 4 exactly once. In 6×6 Sudoku the boxes are 2 rows by 3 columns and you use the numbers 1 to 6.
Is there a timer or mistake limit?
No. Mini Sudoku is built for learning: there is no clock and no game over. Numbers that break a rule turn red straight away, and the Check button gently marks any answer that isn't right yet.
Can I print mini Sudoku puzzles?
Yes — our printable Sudoku generator makes PDF worksheets of 4×4 and 6×6 puzzles, with an answer key on the last page. Ideal for classrooms and car journeys.