- Code: Select all
+-------+-------+-------+
| . . . | 1 . . | . . . |
| . . 1 | . . 2 | . . 3 |
| . 4 . | . 3 . | . 5 . |
+-------+-------+-------+
| 6 . . | 7 . . | 3 . . |
| . . 8 | . . 9 | . . 2 |
| . 5 . | . 4 . | . 1 . |
+-------+-------+-------+
| . . . | 9 . . | . . . |
| . . 7 | . . 5 | . . 8 |
| . 2 . | . 6 . | . 9 . |
+-------+-------+-------+ ED=7.9/7.9/7.2