The horse is where?
The horse is on the field.
    src        edge_attr  dst
0     1   to the left of    6
1     1               on    3
2     1   to the left of    4
3     1  to the right of    2
4     1  to the right of    5
5     2   to the left of    1
6     2               on    4
7     2   to the left of    7
8     4  to the right of    1
9     4  to the right of    7
10    5   to the left of    1
11    6  to the right of    1
12    7  to the right of    2
13    7   to the left of    4