Pro Tip

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

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

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

Pro Tip