Last Digit
EasyWhen only one Cell is left empty in a Row, Column, or , that's called a Last Digit.
Step by Step
How it works
Only one cell left
This row has only one empty cell left.
Every other cell is filled
Eight digits are already placed in this row. Only cell is still empty.
Place the missing digit
The only digit missing from this row is 4, so the last cell must be 4.
Only one cell left
This row has only one empty cell left.
Every other cell is filled
Eight digits are already placed in this row. Only cell is still empty.
Place the missing digit
The only digit missing from this row is 4, so the last cell must be 4.
Last Digit Technique
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