It somehow mimicked chess with the moves..
The corner pieces would sometimes be able to move in an L shape(like the horse thing in chess) ie: top left corner moving to the bottom middle
If a space was available on the corner, one of the opposing corner pieces would sometimes switch with it(kind of like the rook)
and well the one I showed yesterday..
That was a strange glitch.. Don't even understand how i managed to get through it.
At this point, I'm tempted to assume that it isn't a glitch, and could be an intentional mechanic that it sometimes acts like a chessboard...