Chess Opening Theory/1. d4/1...d5/2. c4/2...e6/3. Nc3/3...c6/4. e4/4...dxe4/5. Nxe4/5...Bb4/6. Bd2/6...Qxd4/7. Bxb4/7...Qxe4

Semi-Slav defence: Marshall gambit Marshall gambit 7...Qxe4+ Black recaptures the piece. This is the starting point of the Marshall gambit. White has two main ways of blocking the check, both leading to complex positions where White has to find a way to convert their lead in development into a tangible advantage. White should generally avoid trading pieces, especially queens, as any endgame will favour Black. /8. Be2/ is the main line, blocking the check with the bishop. This leaves the g2-pawn undefended, but taking it would be unwise, since it allows White to develop even more quickly with Bf3, Ne2 and then Rg2 comes with tempo. /8 Ne2/ is less popular, but still very often played. This leaves the c4-pawn undefended, but taking it is once again way too dangerous for Black because of Qd6!, infiltrating on the weakened dark squares. The main continuation in this line ends up restoring material equality. Theory table 8. Be2 Na6 9. Ba5 b6 10. Qd6 unclear 8. ... ... 9. Bd6 Qxg2 10. Qd2 unclear 8. Ne2 Na6 9. Bf8 Ne7 10. Bxg7 Nb4 unclear See also Semi-Slav Defense Marshall_Gambit