PlaySudoku.us
Medium · Puzzle #513
5
1
8
7
3
6
5
1
4
5
8
7
4
2
9
2
8
3
7
9
6
4
6
2
3
5
3
1
9
2
7
9
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.