Example of Impossibles Analysis
This is a screenshot
Impossibles:
Removal of possible solutions due to the presence of a Solution in the same
Row,
Column,
or Box
.In this example, the Solution 7 in the first row forces the removal of any possible solution 7's in the same Row, Column and Box. Similarly, for all the other Solutions. More...
Same Example with the Impossibles Analysis turned off
This is a screenshot
This second screen shot just shows the Impossibles Analysis turned off, so you can see the before
and after effect of this Analysis.