AI Escargot 

+-------+-------+-------+ 
| 1 . . | . . 7 | . 9 . | 
| . 3 . | . 2 . | . . 8 | 
| . . 9 | 6 . . | 5 . . | 
+-------+-------+-------+ 
| . . 5 | 3 . . | 9 . . | 
| . 1 . | . 8 . | . . 2 | 
| 6 . . | . . 4 | . . . | 
+-------+-------+-------+ 
| 3 . . | . . . | . 1 . | 
| . 4 . | . . . | . . 7 | 
| . . 7 | . . . | 3 . . | 
+-------+-------+-------+