Mini Sudoku
Mini Sudoku is Sudoku on a smaller grid — 4×4 or 6×6 instead of 9×9 — with exactly the same rules. Fill every row, column and box so each contains the digits once (1–4 on a 4×4, 1–6 on a 6×6). Quick to finish and perfect for beginners, kids, or a fast break. Pick a size below and play.
How to play Mini Sudoku
- Pick a size — 4×4 (digits 1–4) or 6×6 (digits 1–6), with the buttons above the grid.
- Fill rows & columns — each row and column must contain every digit exactly once.
- Fill the boxes — each outlined box (2×2 on a 4×4, 2×3 on a 6×6) must also contain every digit once.
- No repeats — a digit can’t repeat in any row, column or box.
- Play it — tap a cell then a number, ⌫ to clear. Every board has one solution by logic alone.
What is Mini Sudoku?
Mini Sudoku is just Sudoku shrunk to a smaller grid — most often 6×6, sometimes 4×4 — keeping the one rule everyone knows: each row, column and box holds each digit exactly once. A 4×4 uses digits 1–4 with 2×2 boxes; a 6×6 uses 1–6 with 2×3 boxes. Fewer cells means a faster solve, which makes mini Sudoku great for learning the logic, for children, or for a quick puzzle on a break.
4×4 vs 6×6
4×4 is the gentlest introduction — only four digits and tiny boxes, so it’s solvable in a minute and ideal for kids or absolute beginners. 6×6 is the classic “mini” size: still quick, but with enough room (2×3 boxes) for real scanning and deduction. Switch between them any time with the size buttons, and tap New for an endless supply. When you’re ready for the full challenge, move up to 9×9 Sudoku.
Mini Sudoku: FAQ
What is mini Sudoku?
Sudoku on a smaller grid — 4×4 or 6×6 instead of 9×9. Same rules: each row, column and box contains every digit exactly once (1–4 on a 4×4, 1–6 on a 6×6).
Is mini Sudoku good for kids and beginners?
Yes — the small grids are quick to finish and easy to learn on, especially the 4×4. They teach the exact same logic as full 9×9 Sudoku, just faster.
What size are the boxes?
On a 4×4 the boxes are 2×2; on a 6×6 they’re 2 rows by 3 columns. Every box must contain each digit once, alongside the row and column rule.
Is there always one solution?
Yes. Every mini Sudoku here is generated and checked to have exactly one solution reachable by logic alone.
Is it free to play?
Yes — it plays free in your browser on phone, tablet and desktop, no download or sign-up. Tap New for a fresh board any time.