Sudoku for kids and adults

Choose Sudoku. With Per page set to four, you get four puzzles on one page. Then click Add puzzle page.

Apply these settings to every Sudoku copies size and difficulty to all sudokus in the book, each keeping its own puzzle.

Size gives you four by four, six by six or the classic nine by nine. Difficulty runs from easy to expert and decides how many numbers are given. Symbols switches digits to letters, handy for children who cannot count reliably yet. Symmetrical starting numbers places the starting numbers in a neat pattern, like printed sudoku. Switch it off to make the hardest levels a little harder.

Shuffle makes a new puzzle. Every sudoku has exactly one answer, and the solutions section shows the filled grids, four together under one page number.

Sudoku needs no words or pictures.