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