- Code: Select all
+-------+-------+-------+
| . . . | . . . | 5 . . |
| . . 6 | 5 . 4 | . 2 . |
| 4 . . | 9 . . | . . . |
+-------+-------+-------+
| 8 . . | . . . | 2 . . |
| 1 . . | . . 9 | 4 . . |
| . . 3 | . 6 . | . . . |
+-------+-------+-------+
| . . 8 | . 2 . | . 3 7 |
| . . 2 | 1 . 7 | . . . |
| . 3 . | . . 6 | . . . |
+-------+-------+-------+
......5....65.4.2.4..9.....8.....2..1....94....3.6......8.2..37..21.7....3...6...
(Source: Sudoku Architect)

