Hi Raúl, Thanks for your interest. Your report is a bug that has been fixed in the latest version 6.2.6.
You can find it here: http://ftp.gnu.org/gnu/chess/gnuchess-6.2.6.tar.gz Regards, Antonio Ceballos On Sat, May 9, 2020 at 10:44 PM Raul Granados Barbero via Bug reports for GNU Chess <bug-gnu-chess@gnu.org> wrote: > Good evening (writing from Europe), > > It happens that when trying to input a castling move as o-o the programme > reports it as an invalid move, although it shows in the figure as if the > castling was already made. Any input after that error is considered > invalid, making impossible to continue the game. Please see enclosed > figure. It also happens with the graphic option disabled. > > Thanks very much for your help. > > Regards, > Raúl! >