Are there shields on the wall?
Yes, there is a shield on the wall.
    src        edge_attr  dst
0     0   to the left of   13
1     0   to the left of    1
2     0  to the right of    9
3     1  to the right of   13
4     1  to the right of    0
5     2  to the right of   12
6     2  to the right of   14
7     2  to the right of    3
8     3  to the right of   17
9     3  to the right of   15
10    3   to the left of    2
11    4   to the left of    5
12    4  to the right of    7
13    4   to the left of   10
14    5   to the left of   10
15    5  to the right of   18
16    5  to the right of    4
17    5  to the right of   16
18    6  to the right of   14
19    6  to the right of   11
20    6               on    8
21    7   to the left of   18
22    7   to the left of    4
23    7   to the left of   16
24    9   to the left of   13
25    9   to the left of    0
26   10  to the right of   16
27   10  to the right of    5
28   10  to the right of    4
29   10  to the right of   18
30   11               on    8
31   11  to the right of   14
32   11   to the left of    6
33   12   to the left of    2
34   13   to the left of    1
35   13  to the right of    9
36   13  to the right of    0
37   14  to the right of   17
38   14  to the right of   15
39   14   to the left of    2
40   14   to the left of    6
41   14   to the left of   11
42   15   to the left of    3
43   15   to the left of   20
44   15   to the left of   14
45   16   to the left of    5
46   16               of    4
47   16   to the left of   10
48   16  to the right of    7
49   17   to the left of    3
50   17   to the left of   19
51   17   to the left of   14
52   18   to the left of   10
53   18  to the right of    7
54   18   to the left of    5
55   19  to the right of   17
56   20  to the right of   15