H. G. Muller wrote on Tue, Jun 9, 2020 07:18 PM UTC:
Ah, stupid! The diagram makes brouhaha squares by first defining 'holes' (i.e. placing a piece with name 'hole' on all squares youwant to be blacked out), and then later put a piece on that square. But the specification of the holes was not subject to the position symmetry. This was by design, but I still forgot to specify the 10th rank should be holes. Now I did, and it seems to work also for black now.
Ah, stupid! The diagram makes brouhaha squares by first defining 'holes' (i.e. placing a piece with name 'hole' on all squares youwant to be blacked out), and then later put a piece on that square. But the specification of the holes was not subject to the position symmetry. This was by design, but I still forgot to specify the 10th rank should be holes. Now I did, and it seems to work also for black now.