Mini sudoku for beginners
In the 4-by-4 game, every row, column, and 2-by-2 box contains 1, 2, 3, and 4 exactly once.

Worked example
A row containing 1, 3, and 4 is missing 2. Before placing it, check that its column and box also allow 2.
Try it step by step
- Mini Sudoku
Fill every row, column, and box with 1, 2, 3, and 4. Tap a square, then a number.
- Inequality Grid
Use each number once per row and column and obey the greater-than clues.
- Magic Squares
Fill the blanks so rows, columns, and diagonals have the same sum.
A useful hint
Use elimination instead of guessing. If a square has two candidates, look elsewhere for a square with only one.
Simple activities, gentle encouragement, and room to explore at your own pace. Big buttons and simple controls on phones, tablets, and computers.
Games to practise
Mini Sudoku
A pocket-sized number puzzle with a satisfying solution.
Inequality Grid
Use each number once per row and column and obey the greater-than clues.
Magic Squares
Fill the blanks so rows, columns, and diagonals have the same sum.
Repair the Pattern
Repair the Pattern. Use clues on both sides of a missing element. Three levels to explore at your own pace.
Growing Staircase
Growing Staircase. Recognize a growing pattern rather than a repeating one. Three levels to explore at your own pace.
Two Rule Sort
Two Rule Sort. Apply the intersection of two visual rules. Three levels to explore at your own pace.
Turn the Arrow
Turn the Arrow. Develop mental rotation with a single direction change. Three levels to explore at your own pace.