PlaySudoku.us
Medium · Puzzle #6
2
6
5
8
3
8
7
6
1
9
4
8
7
5
6
9
7
8
2
3
6
9
6
2
3
1
1
4
7
5
6
3
2
4
7
8
3
Work the most constrained areas first — rows, columns, or boxes that already have the most filled digits.
Work the most constrained areas first — rows, columns, or boxes that already have the most filled digits.
Work the most constrained areas first — rows, columns, or boxes that already have the most filled digits.
Work the most constrained areas first — rows, columns, or boxes that already have the most filled digits.