@lausey saidThe problem's been there for years and it won't be fixed just yet. Russ is writing new code for chess variants and I'm guessing it will work correctly once it's ready.
Is there a known problem with castling in Fischer Random? How new is this feature?
See the link to my thread below.
https://www.dailychess.com/forum/only-chess/chess-960-game.181588
@russ saidThank you
Just a little demo of (work in progress) castling for 960. Always initiated by moving the king, as normal, but sometimes you may need to drop onto the rook to complete the castle.
[youtube Fischer Random castling]zpZORUXXcrI[/youtube]