Mini Sudoku
4×4 or 6×6 grids — perfect for beginners and children
Mini Sudoku is fully playable. Choose a difficulty and start solving.
Mini Sudoku uses smaller grids: the popular 4×4 version uses digits 1–4 in four 2×2 boxes, and the 6×6 version uses digits 1–6 in six 2×3 boxes. The rules are identical to standard 9×9 Sudoku but scaled down. Mini Sudoku is ideal for introducing children to Sudoku logic, for quick puzzle sessions, or as a warm-up before tackling larger grids.
Like all Sudoku variants, Mini Sudoku builds on the classic 9×9 foundation. Every row, column, and 3×3 box must contain each digit from 1 to 9 exactly once. The variant constraint is added on top of these standard rules, never replacing them.
If you're new to Sudoku, start by learning the basic rules and techniques before attempting variants.
Techniques Useful for This Variant
| Technique | How it applies |
|---|---|
| Pencil Marks / Notes | Essential for tracking candidates alongside the variant constraint |
| Obvious Singles | Cells narrowed to one candidate by the combined constraints |
| Hidden Singles | Digits with only one valid cell in a unit after variant elimination |
| Pairs and Triples | Locked candidates exposed by the additional constraint |