Sudoku1 - Variant Odd

Variant : Odd and Even (Pair et Impair)

This option allows you to define if the cell contains an even number (2,4,6) ... or odd (1,3,5 ...).
The letters O-odd (or I in French) and E-even (or P in French) are positioned at the top right of the cell. This indication may help for progress in the resolution of the grid.

When pushing button "Variant-> Possible" of the toolbar, possible values are filtered, using combinations available. For resolution method, select the method "Variant" to take into account these combinations.

Here is an example of the grid.
Only 2 and 4 are possible. But as 2 is already in the column, the cell contains a 4.