This variant, mentioned in The
Encyclopedia of Chess Variants, was invented by Jed Stone in 1982.
The rules of orthodox chess are followed, but now in a turn, a player may
either move one of his own pieces or a piece of the opponent.
It is allowed to move the same piece as the opponent moved before,
possibly (in case of a piece that is not a pawn) undoing the move. It is
also allowed to move a pinned piece of the opponent such that his king
goes into check. (Pritchard does not state if a king may be moved into
check - one would assume that one is also allowed to move the king of
the opponent into check.)
As only pawn- and capture-moves cannot be reversed, it seems that draws
are quite likely in this variant.
WWW page created: 4 Sep 2000.
Last modified on: 4 Sep 2000.