Free Online Sudoku Puzzles
Start small with 4 × 4 Sudoku for kids, move up to 6 × 6, then try full 9 × 9 puzzles from Easy to Hard. Every puzzle has exactly one solution, and your progress is saved if you leave the page.
- Sudoku for Kids4 × 4 grid, numbers 1–4Ages 5–8 (Kindergarten–Grade 2)
- 6×6 Sudoku6 × 6 grid, numbers 1–6Ages 7–10 (Grades 2–5)
- Easy Sudoku9 × 9, 38 cluesAges 8 and up
- Medium Sudoku9 × 9, 30 cluesAges 10 and up
- Hard Sudoku9 × 9, about 25 cluesTeens and adults
- Daily SudokuA new 9 × 9 every dayAges 10 and up
Questions and answers
How do you play Sudoku?
Fill the grid so every row, every column and every box contains each number exactly once. In 9 × 9 Sudoku that means the numbers 1 to 9. Some numbers are given at the start, and you work out the rest by logic.
Is Sudoku a math game?
Sudoku uses numbers but no arithmetic. It’s a logic puzzle, and it builds the careful, step-by-step reasoning that math problems need.
Which Sudoku should I start with?
Young children should start with 4 × 4 Sudoku for kids. Beginners of any age can try 6 × 6, then Easy 9 × 9. Move up to Medium and Hard when Easy feels quick.