I posted an article including pretty images of some positions on:
https://www.bgonline.org/forums/webbbs_config.pl?read=213189 Please read it there and then feel free to post replies here if you prefer also. It may not be a bug by definition but it's about GnuBG, involving a very strange game that lasted for hours and who knows for how many hundreds (if not thousands) of rolls... MK