What exactly is the walls variation of Icehouse?
Nobody plays that any more. Under the Walls rule any line you could draw between two corners of two different icehouse pieces counted as a “wall” — you couldn’t attack through it, but had to place any attacking points past the wall. So two parallel defenders produced an impenetrable wall for anything past them if they were close enough, since you couldn’t position an attacker such that it’s point went past their farthest end.
