|
|
|
|
If two cells in a group (row, column or 3x3 box) contain an identical pair of candidates and only those two candidates, then no other
cells in that group could be those values.
These to candidates can be excluded from other cells in the group.
|
|
In the example above, the candidates 4 & 7 in columns three and
seven form a Naked Pair within the row. Therefore, since one
of these cells must be the 4 and the other must be the 7,
candidates 4 & 7 can be excluded from all other cells in the row.
|
|
|
Free Download