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! 👍
1
4
9
3
5
4
2
3
8
2
5
4
7
9
7
8
2
3
1
5
7
8
5
1
7
Mathematical Mind

"There are no solved problems; there are only problems that are more or less solved." — Henri Poincaré

Mathematical Mind