PlaySudoku.us
Medium · Puzzle #171
9
3
1
4
3
5
9
8
5
2
3
7
4
6
1
6
2
8
4
9
6
1
7
5
6
2
3
7
6
1
8
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.
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.
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.
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.