The Albin Counter-Gambit appears on the board after 1. d4 d5 2. c4 e5 followed by 3. dxe5 d4. It is a pretty unusual, yet tricky opening. Black sacrifices the pawn in exchange for very good development and an advanced d4-pawn. There is some theory you need to know if you are planning to play Albin Counter-Gambit for either side.