Hm, before the 3 points you cited, there
was another one in the rules, let's call it point 0:
Castle:
Its Wall can move or turnover one or two squares forward.
According to point 0, its wall can turnover one or two squares
FORWARD, not sideways, and that makes sense, since the
wall represents a pawn.
I agree that point 3 you referred is expressed somehow unclear,
leaving the impression that its wall can turnover
in every direction including sideways, but that would contradict
point 0.
An easy way to test the ID engine about
legal moves and strength is to make a test game vs
Hm, before the 3 points you cited, there was another one in the rules, let's call it point 0:
Castle:
Its Wall can move or turnover one or two squares forward.
According to point 0, its wall can turnover one or two squares FORWARD, not sideways, and that makes sense, since the wall represents a pawn. I agree that point 3 you referred is expressed somehow unclear, leaving the impression that its wall can turnover in every direction including sideways, but that would contradict point 0.
An easy way to test the ID engine about legal moves and strength is to make a test game vs
https://dagazproject.github.io/checkmate/turnover.htm
(after setting the same startposition in the ID engine as in this site)