Pro Tip

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

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

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

Pro Tip