I got WA28
Maybe i misunderstood something ...

I suppose that :

input
------------

0 0 0 0 0 0 0 0
0 0 0 0 0 0 -5 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0
1
White
a1-a3

output
------------
Correct

0 0 0 0 0 0 0 0
0 0 0 0 0 0 -5 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0

because the initial position may be senseless ...

Am i right ? or not ???