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The Queen's Gambit Declined (or QGD) is a chess opening in which Black declines a pawn offered by White in the Queen's Gambit: 1. d4 d5 2. c4 e6. This is known as the Orthodox Line of the Queen's Gambit Declined. [1] When the "Queen's Gambit Declined" is mentioned, it is usually assumed to be referring to the Orthodox Line; see "Other lines" below.
The Marshall Attack (also called the Marshall Gambit) is a chess opening characterised by the moves: . 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d5. The Marshall Attack is an aggressive line in the Ruy Lopez, where Black sacrifices a pawn by playing d5 to gain initiative and a kingside attack.
The Tarrasch Defense is a chess opening characterized by the moves: . 1. d4 d5 2. c4 e6 3. Nc3 c5. The Tarrasch is a variation of the Queen's Gambit Declined.. Black's third move is an aggressive bid for central space.
The intended recapture with the f6-knight prevents Black from seamlessly transposing to the Semi-Tarrasch if White has played 4.Bg5. After 4...c5, White usually plays 5.cxd5 Nxd5 6.e3 or 6.e4, which leads to different types of middlegame play and has attracted the interest of strong players with both colors since the early twentieth century.
The Semi-Slav Defense is a variation of the Queen's Gambit Declined chess opening defined by the position reached after the moves: 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6. The position may readily be reached by a number of different move orders. Black's supporting pawns resemble a mixture of the Orthodox Queen's Gambit Declined, e6, and the Slav ...
The Marshall Defense is a chess opening that begins with the moves: . 1. d4 d5 2. c4 Nf6?!. The Marshall Defense is a fairly dubious variation of the Queen's Gambit Declined.It was played by Frank Marshall in the 1920s, but he gave it up after losing with it to Alekhine at Baden-Baden in 1925. [1]
2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. Nf3 c6 6. e3 Qa5. Black breaks the pin on the h4–d8 diagonal and forms a pin of their own on the c3-knight (exploiting the absence of the White's queen bishop from the queenside). If Black later plays dxc4, there may be threats against the g5-bishop. Note that 5.cxd5 cannot win a pawn because of the Elephant ...
2. c4 Bf5!? The Baltic is an unusual variation of the Queen's Gambit Declined (QGD). In most defenses to the QGD, Black has difficulties developing his queen bishop. This opening takes a radical approach to the problem by bringing out the queen bishop immediately, but exposes it to the latent threat of e2-e4, for example 3. cxd5 Qxd5? 4. Nc3 Qa5 5.