- Code: Select all
+-------+-------+-------+
| . 7 . | . . . | . . . |
| . . 3 | . 7 9 | . . . |
| 4 . . | . . . | 2 . 5 |
+-------+-------+-------+
| . 2 5 | . 3 . | . 9 1 |
| . 4 . | . . . | . . . |
| . . . | 1 . . | . 3 . |
+-------+-------+-------+
| . . . | . 8 4 | 6 1 . |
| . . 8 | 7 . . | . . . |
| . 6 . | 2 . . | 9 . . |
+-------+-------+-------+
.7.........3.79...4.....2.5.25.3..91.4..........1...3.....8461...87......6.2..9..
(Source: Sudoku Architect)

