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Play Sudoku:

A B C D E F G H I
1
2
3
4
5
6
7
8
9

Use the arrow keys to move, 1-9 to enter a digit and Backspace or Delete to clear a cell. To add or remove a candidate, press C and then 1-9.

Puzzle number 441036 (Difficulty: Easy) Permanent link Image link

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The basic rules

Fill each empty cell with a digit from 1 to 9. Every row, column and 3 × 3 box must contain each digit exactly once.

How to play online

Click or tap an empty cell, then use the number pad or type 1-9. Use the arrow keys to move between cells. To clear an editable cell, select "Erase" or press Backspace or Delete. The original givens stay locked while you solve.

A Sudoku grid with one row, one column and one 3 × 3 box highlighted.
Rows, columns and 3 × 3 boxes each use the digits 1-9 once.

Your first move

A row, column or box has just one empty cell. Fill it with the missing digit.

After every placement, check its row, column and box again. One new digit can unlock several more cells.

When the next digit is not obvious

Turn on "Show candidates" to see which digits are still possible, based on the filled cells and any candidates you have removed. The small digits are notes about possibilities, not confirmed answers.

A full-house example with B1 highlighted in column B.
Column B is missing 3, so B1 must be 3.

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