I know that Pocket Knight Chess works, and I assume that other pieces can
also be pocketed. I wonder, though, if the following has been tried and
if it works. in 'Pocket Chess' the game starts as orthochess. Each
player has a maximum of one unit in pocket at any time. If a player has
no units in pocket, he may pocket one (not the King) by taking it off the
board. If a player has a unit in pocket, he may drop it (no pawn drops to
8th or 1st rank). Seems like a simple idea, so I imagine it has been
tried, but can anyone provide info. or a link?