Take a chess board. Add portals. Now you have Portal Chess .


The concept is fairly straightforward. Each side has their own portal, which they can move one step in any direction. Going through a portal means your piece's particular style of movement continues through your opponent's portal. There are a couple of other details and rules, so you should watch the full video for them.

Definitely going to try playing this one with my dad. Since, you know, I beat him that one time. And I may very well do so again.

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How to play Portal Chess! [YouTube via Reddit]