Derek Nalls wrote on Tue, May 23, 2006 02:54 PM UTC:
I never even saw those black dots in any game that index the pieces
involved in castling because I chose a black border (for my board).
Besides, SMIRF cannot enable castling with the strange opening setup used
in Corner Chess 8 x 8 even as the symbol for a castling option must exist
within the X-FEN string.
Nevermind! All is well.