Openings
The Queen's Gambit: Ideas Behind 1.d4 d5 2.c4
The Queen's Gambit begins 1.d4 d5 2.c4. White offers the c-pawn, but it is not a true gambit in the sense of losing material for an attack. White's real aim is to remove Black's d5 pawn from the center so that White can build with e4 later. If Black takes on c4, White normally wins the pawn back within a few moves. If Black declines, White keeps up the pressure on d5. Either way the opening leads to rich, strategic positions, which is why it has been a main weapon of world champions for more than a century.
Accepted or declined?
Black has three main answers to 2.c4. Taking with 2...dxc4 is the Queen's Gambit Accepted (QGA). Supporting d5 with 2...e6 is the Queen's Gambit Declined (QGD). Supporting d5 with 2...c6 is the Slav Defense. Each gives a different pawn structure and a different set of plans, so choosing between them is a choice of middlegame, not just of moves.
The Queen's Gambit Declined
The QGD is one of the most solid defenses in chess. After 2...e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 Black has a firm pawn on d5 and safe king, and will later look for freeing moves such as ...c5 or ...dxc4 followed by ...e5. The cost of solidity is the light-squared bishop on c8, which is shut in behind the e6 pawn. A large part of QGD strategy for Black is finding a good future for that bishop, either via ...b6 and ...Bb7 or by opening the center with ...dxc4 and ...e5.
The Queen's Gambit Accepted
In the QGA, Black gives up the center for a moment in exchange for free development. A typical line is 2...dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6. White has regained the pawn and has more central presence, but Black's pieces are active and the ...c5 move challenges d4 directly. White often ends up with an isolated d-pawn after an exchange on d4, which gives attacking chances in return for a long-term weakness.
Play through a main line of the QGA →The Slav Defense
The Slav, 2...c6, supports d5 without blocking the c8 bishop. That is its main selling point: in many lines Black develops the bishop to f5 or g4 before playing ...e6. After 3.Nf3 Nf6 4.Nc3 dxc4 Black does take the pawn, but now ...b5 is supported by the c6 pawn, so White usually plays 5.a4 to stop Black from keeping it. The Slav is rock solid and a good choice if you dislike the passive bishop in the QGD.
The big beginner mistake: holding on to c4
When beginners accept the gambit, they often try to keep the extra pawn with ...b5. This usually backfires because it weakens the long light diagonal and the queenside pawns. Here is the classic example: 1.d4 d5 2.c4 dxc4 3.e3 b5 4.a4 c6 5.axb5 cxb5 6.Qf3.
White's queen hits the rook on a8, and the knight on b8 is also loose. Black cannot defend everything: if 6...Nc6 7.Qxc6+ wins the knight with check, and Black is losing a full piece. Even without this trick, the a- and b-pawns would be targets for the rest of the game. The healthy approach is to take on c4 and then develop normally with ...Nf6, ...e6 and ...c5, accepting that White will regain the pawn. The QGA is about time and activity, not about the pawn.
See the long-diagonal trap →The minority attack
The Exchange Variation of the QGD, where White plays cxd5 and Black recaptures with ...exd5, creates one of the most instructive pawn structures in chess. White's c-pawn has disappeared, so on the queenside White has only the a2 and b2 pawns, while Black has a7, b7 and, once Black plays ...c6, a pawn on c6 as well. White has two pawns against three, which is the "minority."
White's plan is to advance those two pawns with b4 and b5. When b5 hits c6, Black either lets White take bxc6, leaving a backward pawn on c6, or recaptures in a way that leaves an isolated d5 pawn. Either result gives White a fixed target to attack with rooks and minor pieces. A standard setup arises after 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 Be7 6.e3 c6 7.Bd3 Nbd7 8.Qc2 O-O 9.Nf3 Re8 10.O-O Nf8 11.Rab1, with b4 and b5 coming next.
Black is not helpless in this structure. Black's natural counterplay is on the kingside, using the e4 square for a knight and sometimes pushing the f- and g-pawns or bringing rooks to the e-file. Understanding that each side has its own wing is the key to playing the structure well.
A trap for White: the Elephant Trap
White can also fall for tricks. After 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.cxd5 exd5, the knight on f6 looks pinned, so 6.Nxd5 seems to win a pawn. It does not: 6...Nxd5! 7.Bxd8 Bb4+ 8.Qd2 Bxd2+ 9.Kxd2 Kxd8, and Black has won a piece. The f6 knight was never truly pinned, because moving it uncovered a counter-attack on the queen and a bishop check.
Play through the Elephant Trap →Other common mistakes
- Black plays ...c5 too early in the QGD without enough development, leaving d5 and c5 loose after White exchanges.
- White develops the f1 bishop before Black takes on c4, then loses a full tempo when Black plays ...dxc4 and the bishop has to move again. This is why White often waits with Bd3 until Black has committed.
- Ignoring the c8 bishop as Black. If it is still on c8 at move 15 with no plan, the position is usually worse.
- Rushing e4 as White before the d4 pawn is supported, allowing tactics against the center.
How to practice this
- Pick one defense as Black, QGD or Slav, and learn the first eight moves and the main pawn break (...c5 or ...e5 for the QGD, ...Bf5 and ...e6 for the Slav).
- Set up the Exchange QGD on the analysis board and play the minority attack against the engine until b4-b5 feels automatic.
- Replay classic games in this opening from our famous games section, and study the structures in our pawn structure guide.
- Test yourself with a few games on the computer, always opening 1.d4 d5 2.c4.