| _ _ 9 | _ _ _ | _ _ _ |
|4 _ _ | 5 _ 2 | _ _ 7 |
| _ 3 _ | _ 7 1|8 _ _ |
| 8 _ 1| _ 6 _ |4 _ _ |
| 6 _ 3| _ 1 _ | _ 8 9|
| _ _ 4| _ 2 8|1 6 3|
| _ _ 2|8 5 _ | _ 4 _ |
|3 _ _ |1 _ 6 | _ _ 8 |
| _ _ _ |2 _ _ |9 _ _ |