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Evil · Puzzle #859
8
6
1
5
9
5
6
4
9
2
9
5
3
3
5
6
1
1
9
6
3
3
4
7
2
9
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.