PlaySudoku.us
Medium · Puzzle #402
2
9
5
6
2
6
2
8
4
6
7
6
7
9
3
1
5
3
1
9
8
8
5
9
3
9
4
6
4
7
8
9
5
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.