If set (1,5)=2 then
(1)
(1,7)=4 => (3,9)=2
(2)
(9,5)=4 => (9,4)=2 =>(5,4)=9 => (5,9)=2
(3,9)=(5,9)=2, so (1,5) =/= 2
So set (1,5)=4 then you can get the answeras below:
5 | 2 | 3 | 6 | 4 | 9 | 1 | 7 | 8 | 8 | 4 | 1 | 2 | 5 | 7 | 9 | 3 | 6 | 6 | 9 | 7 | 1 | 8 | 3 | 2 | 4 | 5 | 7 | 6 | 245
| 459
| 29 | 8 | 3 | 1 | 24 | 24 | 8 | 9 | 7 | 3 | 1 | 5 | 6 | 24
| 3 | 1 | 245 | 45
| 6 | 24
| 8 | 9 | 7 | 24
| 7 | 8 | 3 | 1 | 24 | 6 | 5 | 9 | 9 | 3 | 6 | 8 | 7 | 5 | 4 | 2 | 1 | 1 | 5 | 24 | 49 | 29
| 6 | 7 | 8 | 3 |
|