I actually did learn how to play a version of 3D chess- taught to me in Hyde Park, Chicago by one of the bartenders at the Woodlawn Tap- almost fifty years ago. The guy was also a PhD in linguistics from the university of Chicago, one of three bartenders there with PhD’s ( shows the value of a PhD in linguistics)

Anyway, it’s played on a regular 2D chessboard, projected in the mind’s eye as a continuous 3D surface. Picture a rolled up cylinder formed by bringing two edges of the board together, then folding the cylinder into a doughnut. There are no edges now and it makes for some really wild moves.


But beware of playing the game with a PhD bartender while drunk. Having done so, I can only imagine the trouble Trump had playing the game with Putin and Xi.