Weapons against the Queen's Gambit

Dutch is pretty good if you know what you are doing.
However, you should be extremely prepared against Staunton gambit and other gambits that White can employ against the Dutch, like the Jenzen-Korchnoi Gambit.

Accepting the gambit tends to be more dynamic, at least in the opening

But yeah Semi-Slav has been mentioned but also the regular Slav is good. You just have to time the pawnbreaks right

@rayane29

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I currently have one of the most dangerous weapons against the queen's gambit in my arsenal: the ACG.
The ACG, or Albin Counter-Gambit is a very dangerous sword which gives a +1 advantage right from move 2 (1.d4 d5 2.c4 e5!?). But unless you're playing a 2700F player, your opponent will not be able to refute it interely and it has some very interesting lines which is very fun to play with, containing multiple tactical opportunities. What's the best way to defeat a gambit? Play another gambit!!!
Elsk

@elskchess White can safely decline the Albin countergambit by playing e3, then the game usually transposes into the French exchange variation. The psychological value of frustrating Black gives White some advantage here. If White is familiar with French defense, he would have more advantage.

Grunfeld defense is one of the best defenses against Queen's Gambit. The theories of mainline Slav can be completely avoided by playing the exchange variation. Albin and Budapest gambits can be safely declined. The Benoni/Tarrasch/Baltic/Chigorin defense and the Benko gambit can be avoided by playing 1.d4 2.Nf3 3.c4. White gains sizable psychological advantage by frustrating Black's plan in the very beginning of the game.

Grunfeld defense can't be avoided unless White plays Nd2 instead of Nc3, which is usually a bad move.

@SeanRR you're wrong, playing e3 gives a more or less equal position and whites loses all the iniative. After e3, we get exd5, Nf6, Bb4+, 0-0 and black has an easy position to play. The game can still be played and both players have equal chances, not something you wanna do when playing against the ACG.

@elskchess You should not underestimate the psychological value of avoiding the mainlines and declining the gambits. e3 is bad against computers, but it's good against irrational humans. The frustration caused by declining the gambit may increase the chance of Black blundering by 1-10%, which is more valuable than 'giving Black an easy position to play'. This is called affect heuristic.