How do you castle on this site?

I'm new to the site but on a few occasions I have tried to castle and cannot figure out how to do it.  I have tried moving the king 2 spaces, but the system does not allow this move.  I have tried moving the rook first, then the king - but that doesn't work either.  I have tried this in situations where castling should be allowed under the rules (first move for king and rook, no spaces in play are attacked by opponent, I am not in check, etc, etc...)  Can someone please tell me how to execute the castling move?

kingside: Kg1

Queenside: Kc1

Here man ;D. Solve these puzzles by simply moving the king to g1 and c1.

You're supposed to simply move the King to the position where it's supposed to be after a castle, the rook will switch automatically. If you can't do it, it's because something must have happened or is stopping you.

Just make sure that

1. You haven't moved the rook or the king yet.
2. The place where your king and the rook are going aren't attacked. (This include every square in the direction of where the king is castling)

Should work..

it won't work if any of your pass squares are controlled by a hostel piece

Well, Ninshikou and victhestick summed it up pretty well. Moving the king two spaces IS how you castle on chess.com, but you must have overlooked something. If you show us the occasions, maybe we can help.

Thanks everybody - I will try it again next time the opportunity arises and if I still can't make it work for some reason I will post the board here for you.  I thought that at times in the past when I have tried this, I satisfied all the criteria in Ninshikou's post, but it still didn't work.  Maybe I overlooked a square that could be attacked by my opponent or something.  Thanks again for the quick responses!

I'm having the same problem. How frustrating!!!! I drag the King over two spaces and it flys right back.

I figured out I was in the wrong. Tele4Mongo is an idiot in this game of life.

ok, so why can't i castle when king is in check? I've never heard this rule... and all squares that they travel? seems kinda odd.

ye5hu4: those are the rules of the chess. Nothing odd about that at all.

It's fine for the rook to go over a square controlled by the opponent (e.g., b1 when castling long), but not the king.

For ye5hu4 :

http://en.wikipedia.org/wiki/Castling

very helpful thaynk you!