The Move order 1.d4 d5 2.c4 e5 is called Albin Countergambit,
and it’s a gambit in the true sense of the word since after 3.dxe5
d4 Black sacrifices a pawn which he won’t get back so easily. This
opening is one of the gambits which can’t be refuted, but
nevertheless are considered as being inferior. However, what counts
in the end is to get well-playable positions – and of course the
points you score with them. Furthermore, the fact that Black is
immediately dictates the course of action is definitely not to be
underrated. Written by Belgian FIDE Master Luc Henris, the CD
contains a comprehensive presentation of the theory of this
gambit.