Chess Opening Theory/1. d4/1...d5/2. c4/2...e6/3. Nc3/3...c6/4. e4

Semi-Slav Defense: Marshall Gambit
a b c d e f g h 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 a b c d e f g h
Position in Forsyth-Edwards Notation (FEN) rnbqkbnr/pp3ppp/2p1p3/3p4/2PPP3/2N5/PP3PPP/R1BQKBNR b
Moves: 1. d4 d5 2. c4 e6 3. Nc3 c6 4. e4

4. e4

This move controls the center and creates a huge pawn roller. Black's c8-bishop will be blocked and inactive for some time. However, White will have to sac a pawn in a few moves if they want to fight for the edge. Black didn't move a single piece yet and put all their central pawns on light squares. White quickly got e4 in.

Theory table

4	5	6
... dxe4	Nxe4 Bb4+	Bd2 Qxd4	=
... Bb4!?			=

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