I've seen several players making double-walls. I sent a wall-breaker and destroyed both layers. So, my questions are:
If you have a double-layered wall, and a wall-breaker hits it, does the internal wall receive less damage? What if you make a gap of one tile between the two walls? Or do wall-breakers simply do the same damage over some area, regardless of the distance?
In short, how effective are double-walls against wall-breakers?