- Code: Select all
+-------+-------+-------+
| 6 . 2 | . . . | 3 . . |
| 1 8 . | . . . | . . 7 |
| . 3 9 | . . . | 4 2 . |
+-------+-------+-------+
| . 4 . | . . . | . . . |
| . . . | 7 . 6 | . . . |
| . . . | 9 . . | . . . |
+-------+-------+-------+
| 5 . 7 | . 3 . | . . 2 |
| . . . | 2 . 7 | . . 9 |
| . . . | 1 . 8 | 6 . . |
+-------+-------+-------+
6.2...3..18......7.39...42..4..........7.6......9.....5.7.3...2...2.7..9...1.86..
(Source: Sudoku Architect)

