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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.
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 Trap. The main line continues 7.Nd2 Bb4 with the ...
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 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]
The Rubinstein Trap is a chess opening trap in the Queen's Gambit Declined, Orthodox Defense. Black loses a pawn after Nxd5 due to the threat of his queen being trapped on the back rank by White's Bc7.
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.
In chess, the Elephant Trap is a faulty attempt by White to win a pawn in a popular variation of the Queen's Gambit Declined. The earliest recorded occurrence of the trap seems to be the game Karl Mayet–Daniel Harrwitz, Berlin 1848. [1]