- Code: Select all
+-------+-------+-------+
| . 7 . | . . 6 | 9 2 3 |
| 8 . . | . . . | . . 4 |
| . 2 . | . 7 . | . . 6 |
+-------+-------+-------+
| . 9 . | . 1 . | . . 8 |
| 3 . . | . . 7 | 4 . . |
| . . 1 | . . . | . . . |
+-------+-------+-------+
| 2 . . | 5 . . | . . . |
| . 1 . | . . 8 | 7 . 2 |
| . . 3 | . 4 . | . 6 . |
+-------+-------+-------+
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