I'm having trouble with castling
Click the king and them move it two squares in the direction you want to castle in, either by clicking the destination square or dragging and dropping on the destination square.
Read the rules of castling again.
(1) The OP, who posted 3 weeks ago, has not played a single game on this site - he/she has never had this issue, so no idea why the question was asked.
(2) dtusi: your rook doesn't have to be safe when you castle, only the king can't be in check, and none of the squares the king moves through or to can be under attack by an enemy piece. You probably missed the second criteria.
Read the rules of castling again.
(1) The OP, who posted 3 weeks ago, has not played a single game on this site - he/she has never had this issue, so no idea why the question was asked.
...
The site has Play vs Computer, which does not get saved to the archives.
Forgot about that...
This might sound stupid, but I can't seem to trigger castling. I do follow all of the requirements (King's first move, etc.) but I can't do it. Do I need to drag the rook to the king, click on the king and then the rook, or what?
It also needs to be the rook's first move, the king can't be in check, and can't pass through or land in check. But it would be easier for you to provide us with an example. There's some condition that's not being met and there's no way for us to know what it is.
Most likely there's just a check that you don't see or you've moved your king and forgot.
Read the rules of castling again.
(1) The OP, who posted 3 weeks ago, has not played a single game on this site - he/she has never had this issue, so no idea why the question was asked.
...
The site has Play vs Computer, which does not get saved to the archives.
And I wondered where those games went.
This might sound stupid, but I can't seem to trigger castling. I do follow all of the requirements (King's first move, etc.) but I can't do it. Do I need to drag the rook to the king, click on the king and then the rook, or what?