PlaySudoku.us
Medium · Puzzle #24
9
1
6
2
7
6
8
4
6
3
1
4
5
8
2
1
3
6
1
7
4
5
7
9
1
9
7
2
8
4
5
4
8
5
6
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.