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Explanation Wizard
Fill out the form, for example a Sudoku from the newspaper, or press the Play button to load a Sudoku. Press the Wizard button to solve the Sudoku.

Explanation Step by Step
Fill out the form, for example a Sudoku from the newspaper, or press the Play button to load a Sudoku.
First tick the Step by Step choice, to be able to solve the Sudoku box for the box.
Then press the Wizard button to solve the Sudoku.
Then click on the box of which you want to know the solution.