Pro Tip

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

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

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

Pro Tip