- Code: Select all
+-------+-------+-------+
| . . 3 | 7 . . | . . 4 |
| . . . | 1 . 2 | 8 . . |
| 8 . . | 5 . . | . 1 . |
+-------+-------+-------+
| 3 9 7 | . . . | . 4 . |
| . . . | . . . | . . . |
| . 1 . | . . . | 3 9 7 |
+-------+-------+-------+
| . 3 . | . . 8 | . . 2 |
| . . 9 | 2 . 7 | . . . |
| 2 . . | . . 1 | 5 . . |
+-------+-------+-------+
..37....4...1.28..8..5...1.397....4...........1....397.3...8..2..92.7...2....15..
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