Naked Single
EasyWhen a cell can only be one , that's called a Naked Single.
How it works
2
4
9
7
9
5
3
7
1
8
1
6
7
4
9
1
7
2
6
3
9
8
5
4
8
4
2
9
1
3
4
7
1
6
8
5
9
8
4
The cell only has one possiblility
In this example, this Cell can only be a 7.
2
4
9
7
9
5
3
7
1
8
1
6
7
4
9
1
7
2
6
3
9
8
5
4
8
4
2
9
1
3
4
7
1
6
8
5
9
8
4
Every other digit is ruled out
Notice the Cell can already every other possible digit. The only left is 7.
2
4
9
7
9
5
3
7
1
8
1
6
7
4
9
1
7
2
6
3
9
8
5
4
8
4
2
9
1
3
4
7
1
6
8
5
9
8
4
Tip: Use notes
Naked singles are significantly easier to find with notes filled out.
- 249795371816749172639854842913471685984
The cell only has one possiblility
In this example, this Cell can only be a 7.
- 249795371816749172639854842913471685984
Every other digit is ruled out
Notice the Cell can already every other possible digit. The only left is 7.
- 249795371816749172639854842913471685984
Tip: Use notes
Naked singles are significantly easier to find with notes filled out.
All Hints
Unlock hints to find
the Naked Single on your board.
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Hidden SingleEasy