Benoni Defense: Benoni Gambit Accepted is a chess opening with the ECO code A43, part of the Benoni Defense family. It goes 1. d4 c5 2. dxc5. White opens with 1. d4 (the queen's pawn) and Black answers 1... c5. After 3 moves it is Black to move. After the last move White is a pawn ahead in material. The lesson on the board explains every move of the line and lets you play it yourself; it is free.
Black plays ...c5 against 1.d4 and, after d5, builds an unbalanced pawn structure. Black gets activity and queenside play in return for less space.