If I understand correctly it is not possible to hide behind wall. In situation.
[w][w][w][w]
[_][_] [ A ] [w][w][w][w][w][w][w][w]
[_][_][_][_][_] [_][_][_][_][_] [ B ]
[_][_][_][_][_] [_][_][_][ D ][_] [_]
[_][_] [ C ] [w][w][w][w][w][w][w][w]
[w][w][w][w]
I undestand D can see A and C and fire on them ??
D can fire form left up to both A (down left + right) and C (up left + right) ??
Edited by gural