Main Variations
After 1.d4 d5 2.c4:
- 2...dxc4 (Queen's Gambit Accepted) (QGA)
- 2...Nc6 (Chigorin Defense)
- 2...c5 (Symmetrical Defense)
- 2...c6 (Slav Defense)
- 2...e5 (Albin Countergambit)
- 2...e6 (Queen's Gambit Declined) (QGD)
- 2...Bf5 (Baltic Defense)
- 2...Nf6 (Marshall Defense)
- 2...g6 (Alekhine's Variation)
Technically, any Black response other than 2...dxc4 (or another line with an early ...dxc4 that transposes into the QGA) is a Queen's Gambit Declined, but the Slav, Chigorin Defense, and Albin Counter Gambit are generally treated separately. In fact there are so many QGD lines after 2...e6, that many of them are distinctive enough to warrant separate treatment. The Orthodox Defense and the Tarrasch Defense are two important examples. See Queen's Gambit Declined for more.
There are many other possible responses:
- The Slav Defense is a solid response, although many variations are very tactical. If Black plays both ...c6 and ...e6 (in either order), the opening takes characteristics of both the Slav and the Orthodox Defense and is classified as a Semi-Slav Defense.
- The Chigorin Defense takes the game away from the normal positional channels of the QGD, and has been favoured by Alexander Morozevich at top level; it appears to be playable for Black.
- The Albin Countergambit is a sharp attempt for Black to gain the initiative. It is not common in top-level chess, but can be a dangerous weapon in club play.
- The Symmetrical Defense is very rarely played. Although it has not been definitely refuted, play seems to favor White.
- If White chooses to fianchetto his king's bishop, the game transposes into the Catalan Opening.
- The Baltic Defense is offbeat but playable.
- The Marshall Defense is the weakest of the Black replies listed. Named after Frank Marshall, who was the first to devise the move, he briefly played it in the 1920s before abandoning it.
Read more about this topic: Queen's Gambit
Famous quotes containing the words main and/or variations:
“Parents need to recognize that the negative behavior accompanying certain stages is just a small part of the total child. It should not become the main focus or be pushed into the limelight.”
—Saf Lerman (20th century)
“I may be able to spot arrowheads on the desert but a refrigerator is a jungle in which I am easily lost. My wife, however, will unerringly point out that the cheese or the leftover roast is hiding right in front of my eyes. Hundreds of such experiences convince me that men and women often inhabit quite different visual worlds. These are differences which cannot be attributed to variations in visual acuity. Man and women simply have learned to use their eyes in very different ways.”
—Edward T. Hall (b. 1914)