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! 👍
8
6
2
7
5
8
7
1
6
4
2
3
7
5
6
2
3
1
3
2
5
7
1
4
8
6
6
8
1
3
9
2
7
4
9
1
5
3
6
1
5
4
9
2
7
9
3
7
1
6
4
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