Sudoku1 - Probable Method
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Solve Method  "Probable"

For a comprehensive reading, please refer to Sudoku1 Grid definitions.

In a block, if there are only 2 possible cells for a given number, their value become Probable. Use of Probable in cells allows to simplify the solve.  

This method may allow to solve a difficult grid. It can be used in the automatic solve method in the Method panel by a click on Probable.

Here are some simple examples.

Example 1 : By indicating all possible cells in a block for a given number, we can simplify..

 

Numbers 1 and 2 obtained by Single Method in the framed cells, allow to say that they can be only in these 2 cells. They are not possible in the other cells of the block. The number 9 being not authorized on lines and columns, there is only one cell available in the block.

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