Sudoku (4×4, 6×6, 9×9) — free online brain game for kids
Every digit once in each row, column and box. Start with 4×4 and work up to hard 9×9. Each puzzle is freshly generated with a single solution.
Free · no ads · no sign-up · works on phones · Age 6+
Skills it builds
elimination, systematic thinking.
More brain games
- Futoshiki (greater-than sudoku) — tracking several rules, number order
- Nonogram (picross) — two-way deduction, patience
- Maze (8×8 → 25×25) — planning, spatial orientation
- Tower of Hanoi (3–7 disks) — recursive thinking, planning
- Sliding Puzzle (8, 15, 24) — sub-goals, sequencing
- Nim (strategy game) — strategy, thinking ahead, patterns
- Memory Sequence — working memory, attention
- Mental Rotation — spatial intelligence, visual reasoning
FAQ
Is Sudoku (4×4, 6×6, 9×9) free?
Yes. No ads, no account, no app to install; it runs in the browser on phones, tablets and computers.
Do the puzzles change?
Yes, “New puzzle” generates a fresh one each time. Solutions are never shown; the game tells you when you have solved it.