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Easy · Puzzle #697
3
8
1
3
8
9
5
2
7
3
6
5
4
9
7
2
9
2
6
3
8
1
4
8
5
4
6
7
9
1
6
2
8
2
7
5
4
1
2
4
8
1
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.