Pro Tip

Scan rows, columns, and boxes for Hidden Singles: a digit that can only go in one cell within a house.

Pro Tip
✓ Completed! 👍
3
7
4
2
5
1
8
6
3
7
2
1
9
8
6
3
3
5
9
5
9
2
4
8
8
7
4
6
1
2
2
7
4
1
8
5
4
1
3
5
9
5
2
1
3
9
Pro Tip

Scan rows, columns, and boxes for Hidden Singles: a digit that can only go in one cell within a house.

Pro Tip