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Evil · Puzzle #679
4
6
1
8
7
3
5
2
5
5
4
3
7
3
9
8
7
8
1
5
4
2
2
6
9
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.