Rather reluctantly asking for help here, but maybe others have had a similar problem.
I move my king to castle and the rook doesn't then move to complete the move !
Now, as I understand the castling rule, I have not moved either the king or the rook, neither have I been in ' check ' while waiting to perform this manouver.
What is it I am doing wrong ? I have read the help page related to the subject and tried to follow the instructions, yet I still seem to need assistance !