What is a Naked Single?
A cell where 8 of the 9 digits are already used in its row, column, or box. Only one number can possibly go there.
Beginner
Naked Singles
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Beginner lesson
When a cell has only one possible value.
When a cell has only one possible value.
A cell where 8 of the 9 digits are already used in its row, column, or box. Only one number can possibly go there.