DGT boards would instantly transmit moves to calculate a future position made physically on the board. It's not as though one can move the pieces around, then make your "real move" on the screen.
is it legal to use a seperate board?

DGT boards would instantly transmit moves to calculate a future position made physically on the board. It's not as though one can move the pieces around, then make your "real move" on the screen.
I think everyone agrees that using a second board as an analysis board in rapid is bad

DGT boards would instantly transmit moves to calculate a future position made physically on the board. It's not as though one can move the pieces around, then make your "real move" on the screen.
I think everyone agrees that using a second board as an analysis board in rapid is bad
With the obvious exception of daily chess, of course.
Hi, MGleason! Good to hear from you.
I haven't yet managed to play with my DGT board on Chess.com, which is one of the reasons I rarely play live chess here. An earlier comment mentioned it not being allowed to use a DGT board on live chess--is this true?
DGT technology is fabulous, and is used all the time in FIDE tournaments, because it allows display to live and virtual audiences. Modern day wall boards Of course, those official games are monitored by on site arbiters, which is different than the thousands of remote live chess tournaments we are talking about here. Is there really a tech difference in ease of cheating with or without a DGT board in live chess?
Hey, it's been a while!
DGT boards are permitted, and chess.com has some explicit support for them, but you'll need to enable them in your settings.
Have you looked at this page? https://support.chess.com/article/1257-how-can-i-play-with-a-dgt-board
If that doesn't help you, you probably need to contact support. I don't have a DGT board and have never tried to use one, so I can't give much technical help with this.
@IfPatriotGames, see my most recent comment. If you're using a physical board as an analysis board to try out different moves as an aid to visualisation, that's definitely against the rules (albeit difficult to enforce).
If you're just copying the moves from the game to see the position on a physical board rather than on-screen, it might technically be against the rules but isn't a big deal.
Did you change your opinion on this? Because at first you said you thought it was against the rules, but DGT is a physical board to move the pieces in connection with the game, right? So we can have a physical board set up to replicate the pieces.
My opinion is exactly the same as it used to be. From my understanding chess.com changed their opinion a bit. Years ago they said using a separate board was against the rules, then they softened their stance to saying it's ok as long as it's not used to try out different moves.
I've never suggested using it for that, but I DO see the need for some people to use a real board to help with visualization. No different than someone who needs to wear glasses, or likes to play with certain style boards or pieces.
In an over the board game someone used to playing on a green and white board with regular pieces would probably find it very difficult to visualize using a small red and black board with a piece style they've never seen before. Yet chess.com allows online players to pick and choose their board and piece style and color. Which obviously helps with visualization.
Using a real board and real pieces would be the best way to simulate over the board chess so it should be encouraged. It should go without saying that ANY physical trial run of moves before moving would be against the rules. That's not what a real board is for. Just as that's not what wearing glasses are for. Or anything else that helps with visualization.