If you want edge-seeking pieces, you could use hook movers that can only turn a corner after some (large) number of steps. E.g. B-then-R that can make a 45-degree turn only after making 6 or more diagonal steps. In the center of a 12x12 board this is just a normal Bishop. But in the corner of an empty board it would cover 1/4 of the board.
If you want edge-seeking pieces, you could use hook movers that can only turn a corner after some (large) number of steps. E.g. B-then-R that can make a 45-degree turn only after making 6 or more diagonal steps. In the center of a 12x12 board this is just a normal Bishop. But in the corner of an empty board it would cover 1/4 of the board.