Online logic puzzle

Play Sudoku online

Choose a kids 4×4 or a standard 9×9 puzzle. Enter answers, add pencil notes, check your progress and print the exact same puzzle when you want paper.

Puzzle

Saved on this device only

Choose an empty square, then enter a number.

Kids Sudoku

Fill each row, column and box with 1 to 4.

31413321

2314143232414123