8
4
5
9
1
1
7
5
4
2
6
7
7
9
1
8
1
3
6
2
2
6
7
6
5
6
7
9
3
1
7
2
8
Scan rows, columns, and boxes for Hidden Singles: a digit that can only go in one cell within a house.
Scan rows, columns, and boxes for Hidden Singles: a digit that can only go in one cell within a house.
Scan rows, columns, and boxes for Hidden Singles: a digit that can only go in one cell within a house.
Scan rows, columns, and boxes for Hidden Singles: a digit that can only go in one cell within a house.