- Code: Select all
+-------+-------+-------+
| . 9 . | . . 6 | . . . |
| 1 . 2 | . 3 . | 4 . 5 |
| . . . | 8 . . | . 1 . |
+-------+-------+-------+
| . . 3 | . . . | 2 . . |
| . . . | . . . | . . . |
| . . 6 | . . . | 9 . . |
+-------+-------+-------+
| . . . | 7 . . | . 2 . |
| 5 . 4 | . 1 . | 7 . 3 |
| . 3 . | . . 9 | . . . |
+-------+-------+-------+
.9...6...1.2.3.4.5...8...1...3...2.............6...9.....7...2.5.4.1.7.3.3...9...
(Source: Sudoku Architect)

