Pro Tip

Box-Line Reduction: if all candidates for a digit in a row or column are within one box, eliminate that digit from the rest of the box.

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

Box-Line Reduction: if all candidates for a digit in a row or column are within one box, eliminate that digit from the rest of the box.

Pro Tip