Sicilian Defence, Accelerated Dragon
The Accelerated Dragon variation is a variation of the Sicilian Defense, an opening in chess. It is classified in the ECO codes under the keys B34 to B39.
Accelerated Dragon variation arises after the moves (see also: Chess notation):
1 e2- e4 c7 - c5 2 Sg1 -f3 Sb8 - c6 3 d2 -d4 c5xd4 4 Sf3xd4 g7- g6
Basic idea and variants
Accelerated Dragon variation is different from the classic Dragon variation by the fact that Black has not yet played d7 - d6. This can be advantageous in, as black saved a tempo compared to d7 - d6 -d5 d7 -d5 by a direct. After, for example, 5 Nb1 - c3 Bf8 - g7 6 e3 Lc1 - Ng8 - f6 7 Lf1 - e2 0-0 8 0-0 is d7 -d5 in one go. Through timely 8 Nd4 -b3 Black can only d7 - d6 draw and the game ends up in the classic version of the Dragon.
Even after 7 f2 -f3 0-0 8 Dd1 -d2 is d7 -d5 in one go. When trying by 7 Lf1 - c4 to reach the Yugoslav Attack of the Dragon Variation, 0-0 8 Bc4 -b3 the Uogele variant can after 7 .. 8 ... a7 - a5 by result. Now should e4 cover with additional 9 f2 -f3 farmers White, because Black threatens 11 Sc3xe4 to swap with 9 ... a5 -a4 10 Lb3xa4 Sf6xe4 Ta8xa4 an edge peasants against the central pawn and thereby obtain good game.
On the other hand, receives White the opportunity to work with 5 c2 - c4 ( the Maroczy building, named after Géza Maroczy ) continue as Nb1 - c3 has not yet been played. The Maroczy structure is a kind of hedgehog position.
In Maroczy structure, White initially only focused its development on the prevention of breakthroughs b5 and d5. If not done early f7 - f5, include the white towers on c1 and d1. Before that attracts white Le3, Le2, 0-0 and Dd2.
A major version is 5 c2 - c4 Bf8 - g7 6 e3 Lc1 - Ng8 - f6 7 Nb1 - c3 Nf6 - g4 8 Dd1xg4 Sc6xd4 9 dG4 -d1 Nd4 - e6 10 Ta1 -c1. By Qa5 has 11 b2- b4 be prevented.
To obtain a position with knight against a bad white, white -squared bishop is black for exchange of blows between dark-squared bishop and the graduate 5th c2 - c4 Bf8 - g7 6 e3 Lc1 - Ng8 - f6 7 Nb1 - c3 0-0 8 Lf1 - e2 d7 - d6 9 0-0 Bc8 - d7 10 Ta1 -c1 Sc6xd4 11 Le3xd4 Bd7 - c6 12 f2 -f3 a7 - a5 13 b2 -b3 Nf6 - d7 ready.
In Bisguier - Fischer, New York 1956, the Accelerated Dragon variation of the Four Pawns Attack of the King's Indian Defense was created.
The Variant 5 c2 - c4 Bf8 - g7 6 Sd4 -c2 want to deny the cramped black man for facilitating Figure exchange. It is white to further d7 - d6 7 Lf1 - e2 Ng8 - f6 8 Nb1 - c3 0-0 9 0-0 Nf6 - d7 -d2 10 Lc1 Sd7 c5 11 b2- b4 to pawn 11. Lg7xc3 .. 12 Ld2xc3 Sc5xe4 13.Lc3 -b2 ready.
The Gurgenidze variant arises after 5 c2 - c4 Ng8 - f6 6 Nb1 - c3 Sc6xd4 7 Dd1xd4 d7 - d6.