Pro Tip

Work the most constrained areas first — rows, columns, or boxes that already have the most filled digits.

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

Work the most constrained areas first — rows, columns, or boxes that already have the most filled digits.

Pro Tip