Semi-Slav Defense: Marshall Gambit

1. d4 d5 2. c4 e6 3. Nc3 c6 4. e4

Semi-Slav Defense: Marshall Gambit is catalogued under ECO code D31. It is reached after 4 moves (7 half-moves): 1. d4 d5 2. c4 e6 3. Nc3 c6 4. e4. After the last move it is Black to play. White opens 1. d4. It is a named variation of the Semi-Slav Defense, which has 69 catalogued lines in total.

Position shown after the last move; Black to play.