Mini sudoku
A 4 × 4 grid with one solution, and each number confirmed as it goes in. Sudoku for ages five and up.
When to use it
A first taste of logic for five- and six-year-olds, solved together on the board before they try alone. A quiet table activity during maths work on the numbers to four. The early finishers' corner, for a child who wants a puzzle that is done in a few minutes.
What makes it this
Built on the Sudoku generator with these changed. Everything else is the default.
- Mark parts as they are answered
Feedback per item, instead of only once the whole thing is right.
In the builder: How it plays › Solving aids
Preview
View only — copy it to play.First sudoku: a 4 × 4 to start on
Every row, every column and every 2 × 2 box has to hold 1, 2, 3 and 4 — each of them exactly once. Tap an empty square, then tap a number. Start where a row or a box is nearly full.
Why the example is built this way
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Four by four, the smallest board there is.
Choose 4 × 4 under Board size. The numbers only go up to four, so a young child can keep the whole rule in mind, and there is no difficulty to set at this size.
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Every right square turns green at once.
With Mark parts as they are answered on, a correct number is confirmed as it goes in rather than only when the board is full. For a five-year-old, that's the difference between a puzzle and a test.
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Say the rule once, before they start.
A child who has never met a sudoku needs it put in a sentence: every row, column and box holds each number once. Turn on Show the name and instructions to players and write it there.
Build it yourself
- 1 Open the Sudoku builder and fill in the The puzzle tab.
- 2 Change the settings under What makes it this. Each one says where it is in the builder.
- 3 Share the link with your players, or embed the activity in your own site.
Or skip the building: copy this example and swap in your own content.