Herlock Sholmes:just to make clear ... in Up and Down Chess armies show their backs to each other ... they have to go "all around the globe" to fight  the enemy ... they cannot turn and attack from behind ... initial position is very unusual in this variant and can be played easily on regular chess board in real life ... it's funny to see how pieces pop up on the other half of the board ... those of you who played Alice Chess will have fun (and it's much easier than Alice Chess) ...
Andy.