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Expert · Puzzle #987
6
7
3
4
3
5
8
9
2
3
6
5
8
7
2
6
4
9
5
7
5
1
1
4
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.