Is the horse to the left of a flag?
No, the horse is to the right of a flag.
    src        edge_attr  dst
0     0   to the left of    7
1     0   to the left of   10
2     3  to the right of    8
3     3   to the left of   12
4     4  to the right of    8
5     4  to the right of   13
6     5   to the left of   12
7     5   to the left of   14
8     7   to the left of   12
9     7  to the right of    0
10    8   to the left of    3
11    8   to the left of   12
12    8   to the left of    4
13   10  to the right of    0
14   11   to the left of   12
15   12  to the right of    8
16   12  to the right of    5
17   12  to the right of   11
18   12  to the right of   13
19   12  to the right of    3
20   12  to the right of    7
21   13   to the left of   12
22   13   to the left of    4
23   14  to the right of    5