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Solution table

A common way to solve a sudoku is to use a solution table. This solution table containts all the numbers a cell can have. When starting on a sudoku the solution table contains the numbers 1-9 in all cells.

Reducing

When solving the sudoku you can reducing the numbers in the solution table using different "logical" methods. Then you cross over a number from the solution table to mark the number as not possible in that cell. When you have only 1 number left in a cell this number must be the solution for the cell.

Below you se a solution table ready to be used. I have med a printerfriend version too.

123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789

If you want to learn methods you can use to reducing the solution table you can read about them in Reducingmethods