3-way chess is a chessboard on which three people can play. The same rules apply except for some slight variation on moves made through the center of the board. Apparently this particular game was bought in the Czech Republic. And you know what else you can buy in the Czech Republic don't you? Absinthe. Yeah, I tried making my own once but drinking it made me go blind in one eye for a couple days. Just like the time I pleasured myself for fourteen hours straight.
Hit the link for another picture, along with a link to an explanation of the game.
3-Way Chess [meignorant]
Thanks to Richard, who kicks ass at all board games, for the tip