Castling in XBoard's edit mode Probably a stupid question, but I use XBoard with Fairy-Max or GNU Chess. In the edit game mode, or in analysis mode, it is not possible to castle under any circumstances. Is there some setting I am missing?
Edit: Here is an example:
For the position:
1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nc6 5.Bc4 Be7
I would like to play 6.O-O. Typing the move in returns &quot;{White mates} 1-0&quot;. Dragging the king over two spaces returns &quot;illegal move&quot;. Doesn't matter which engine is selected. I can castle while playing against the computer, however.
According to XBoard's manual [ref. 1]:


  "...XBoard 4.2.7 and earlier... The internal move legality tester
  [had problems with] castling or en passant-capture rights."


If you're running 4.2.7 (or earlier), then a newer release should solve this problem.

Caution: &nbsp;Although this is not relevant to the specifics of the question, I feel that if you are running this version, then it would be remiss of me were I not to mention that there is also a reported security risk (mid-grade: stack overflow) inherent to XBoard 4.2.7 [ref. 2, 3].



References:


https://www.gnu.org/software/xboard/manual/xboard.html#Limitations 
https://www.cvedetails.com/vulnerability-list/vendor_id-2551/product_id-4447/version_id-19153/Tim-Mann-Xboard-4.2.7.html 
http://seclists.org/fulldisclosure/2004/Mar/40