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Easy · Puzzle #499
5
6
4
7
3
1
4
5
7
1
9
4
2
6
3
7
5
4
6
2
8
9
7
4
9
5
1
6
2
3
9
8
4
1
4
3
7
2
4
7
2
5
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.