That very video was posted 10 years ago by a Chess.com staffer, asking what people thought of it.
https://www.chess.com/forum/view/fun-with-chess/portal-chess-anyone
Portal Chess
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Hello,
I was wondering, is there a project to make this variant of chess available on chess.com ?
https://www.youtube.com/watch?v=Zq4pJw_nk_0
https://www.youtube.com/watch?v=GI2ITGUnaLg
I believe this is a very cool variant that opens plenty of possibilities all with just one new piece.
If yes, I would be interested in getting more info about it!
If not, I would be interested in knowing how to make one (I can help with coding)!
Best,