I like it. It's great fun to play against, and the piece recognition technology is second to none (probably better than the pricier DGT boards). I should add, though, that the board is not solid wood, more like veneer. And it is far from 2,400 ELO (or USCF) -- more like 2,100 against human opposition. I'm 1900 USCF and I would guess that I score 30% against the Exclusive in G15. But to me it's more fun when you actually stand a chance against the computer.
ChessGenius Millennium Exclusive chess computer


I created a post on the Site Feedback forum requesting Chess.com create a protocol for the ChessLink to allow Millenium Exclusive and Millenium King Performance boards to play OTB with Chess.com. If you'd like to add your voices of support, here's the link:
https://www.chess.com/forum/view/site-feedback/chess-com-support-for-millenium-exclusive-and-king-performance-via-chesslink
I have noticed quite a few people complaining about the build quality of the Chess genius exclusive. If you want something that is solid wood, square off has one that is pretty nice, although I don't think it is a real chess computer since your have to pair it with your phone which in turn does all the brain work.
Here's a good place to learn more about the different chess computers...
https://hubpages.com/games-hobbies/Electronic-Chess-Computer

I created a post on the Site Feedback forum requesting Chess.com create a protocol for the ChessLink to allow Millenium Exclusive and Millenium King Performance boards to play OTB with Chess.com. If you'd like to add your voices of support, here's the link:
https://www.chess.com/forum/view/site-feedback/chess-com-support-for-millenium-exclusive-and-king-performance-via-chesslink
Why should Chess.com create a protocol? This is the job of Millennium. If Millennium deliver the protocol, then Chess.com can include it. Same way like the DGT protocol.

Close, but not quite. Millenium cannot program an interface for every different website, because their coding methods are different. Chess.com and Lichess.org (as an example) do not share the same programming methods, although they may share the same language.
To make it easy, Millenium developed the ChessLink adapter, which is like a modem. It uses a common driver to allow websites to communicate to it, and therefore, use the Millenium board as an input device (like the keyboard and mouse that you use to interact with the website) and an output device (the LEDs that show the piece move can be likened to your screen). However, Chess.com would program the interface of their website to the ChessLink protocol developed by Millenium.
In order to do it, enough users need to request it. While I can already play chess on ICC and FICS using Android for Chess and my Millenium board, I like playing on Chess.com. So, it would be a nice feature to have.
I am guessing in the case of Arena Chess and Novag the modem interface was software driven rather than having a hardware device (like in the old dial-up days where you could use a software modem that would mess with your CPU bus timings or an external hardware modem that was more stable).
Anyway, according to Arena Chess website the latest iteration of their GUI is for Linux and in the blurb it does not mention anything about being able to use a DGT or any other board. My installation of Arena does have the option for DGT and Citrine but my version is getting on a bit. So it could be they have carried forward the options for DGT but they I don’t know about Millennium or SquareOff.
If Arena did create connectivity with Millennium then their menu system might offer some insight as to how it works.

I think if you're playing blitz online, and you're using the "confirm move" feature, you probably wouldn't use an electronic board as an input device, which you've already figured out. However, moving the other person's pieces with LEDs is much easier than moving the other person's pieces with a speaker / screen combination (like DGT). There are some possible future options such as the SquareOff Swap (I think it will be fast enough for blitz games) and maybe this new offering from Regium (supposedly Kickstarter coming soon).
No, I think the Millenium or DGT is better for slower games where people prefer to play OTB, but like the idea of playing with people on the Internet. After all, try as I might, my house has only one chess player in it, and playing the computer alone can get stale.

Hi, Can I ask you something about the the Millennium Chess Computer?, I got it for Christmas and I love it, but the problem I am having (beside we can not connect with chess.com), is to find a playing level I am comfortable with, I am not a very good player, (I could say beginner), and selecting level like FUN *1, or EASY *0, still not easy to win a game...somebody have any suggestion here?

@Daniel_1960 Perhaps you want to see where you are losing the game. If you load your completed game in to chess.com analysis or lichess, then you can get better feedback on which moves are giving you the most problems -- whether it's on the opening, middle, or end game. At the levels you are playing, you should be able to hold your own.
Does anyone own the electronic chess computer Millinnium ChessGenius Exclusive M820 that is rated at around 2400? What has your experience been with them, particularly if you prefer a standalone chess computer? Thank you.