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The Sicilian Defence is a chess opening that begins with the following moves: . 1. e4 c5. The Sicilian is the most popular and best-scoring response to White's first move 1.e4. The opening 1.d4 is a statistically more successful opening for White because of the high success rate of the Sicilian defence against 1.e4.
The Reversed Sicilian (classified A20–29 in ECO) is another broad category of defence, introduced by the response 1...e5. Note again, that Black can delay playing ...e5, for example 1.c4 Nf6 2.Nc3 Nc6 3.Nf3 e5 whereupon even though ...e5 has been delayed, once it is played the defence is classified as a Reversed Sicilian.
In this variation, White argues that since the Sicilian Defence (1.e4 c5) is one of the very best responses to 1.e4, acquiring a Sicilian Defence position with an extra move must be superior. In the Sicilian Defence, however, Black rarely plays b6/Bb7, and when a queenside fianchetto is played it is usually in extended form (e.g. a6/b5/Bb7).
In chess, the Sicilian Defence, Alapin Variation is a response to the Sicilian Defence characterised by the moves: . 1. e4 c5 2. c3. It is named after the Russian master Semyon Alapin (1856–1923).
A notable feature of the Najdorf is the sheer amount of potential white replies - Grandmasters have played 22 different responses to 5...a6. Beside the main lines mentioned above, 6.f3, 6.g3, and 6.a4 are also respected responses to the Najdorf.
Variation: Used to describe a branch of another named opening, for example the Najdorf Variation, a line of the Sicilian Defense. Defense: Refers to an opening chosen by Black, such as Two Knights Defense or Caro-Kann Defense. Some openings described as "defenses", such as the King's Indian Defense and Sicilian Defense, can in fact be quite ...
In chess, the Dragon Variation [1] is one of the main lines of the Sicilian Defence and begins with the moves: . 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6. In the Dragon, Black's bishop is fianchettoed on g7, castling on the king's side while aiming the bishop at the center and queenside.
The move 5.c4 can be considered as the positional approach as opposed to 5.Nc3. The Maróczy Bind can be seen in other openings as well, for both colors, including the English Opening, the King's Indian Defence, and other lines in the Sicilian Defence. This bind is distinctive for two White pawns on c4 and e4 (c5 and e5 for Black), where they ...