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Margate Variation of the Sicilian Defence – 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Bb5; Marienbad Variation of the Sicilian Defence, Wing Gambit – 1.e4 c5 2.b4 cxb4 3.a3 d5 4.exd5 Qxd5 5.Bb2; Massachusetts Defence of the Caro–Kann Defence – 1.e4 c6 2.d4 f5; Mediterranean Defence – 1.e4 e6 2.d4 Nf6
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 Sicilian Defence, Chekhover Variation (also sometimes called the Szily Variation or Hungarian Variation) is a chess opening named after Vitaly Chekhover, from the game Chekhover–Lisitsin, Leningrad 1938. [1] It is defined by the moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4
The best known of these, called the Poisoned Pawn Variation, is a line of the Sicilian Defense, Najdorf Variation that begins with the moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6. after which 8.Qd2 Qxb2 usually follows, accepting the "poisoned" b2-pawn. White can also play 8.Nb3, protecting the pawn.
For example, Harry Golombek, in Capablanca's 100 Best Games of Chess (1947), gave a question mark to Black's fourth move in the line 1.e4 c5 2.Ne2 d6 3.d4 cxd4 4.Nxd4 g6, a form of the Accelerated Dragon variation of the Sicilian Defence, stating that 4...Nf6 was "necessary" to make White block his c-pawn with 5.Nc3 and thus avoid the Bind.
The Wing Gambit can also be played against the French Defence, although this is largely refuted at the grandmaster level.One line, as popularised by Gotham Chess, [2] goes 1.e4 e6 2.Nf3 d5 3.e5 c5 4.b4, and Black often takes cxb4, followed by White's a3 with a further gambit of a pawn in exchange for quick development of the minor pieces, and/or d4 and c3 to solidify the centre.
Abonyi Variation of the Budapest Gambit – 1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4 Nxe5 5.f4 Nec6 – named after István Abonyi [2]; Adams Attack of the Sicilian Defence – 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.h3 – named after Weaver W. Adams [3]
In addition to his over-the-board and theoretical successes, Polugaevsky was a highly respected chess author. His 1977 book Grandmaster Preparation (now out of print) is a classic that contains notable insights into his own thinking as he crafted the ultra-sharp eponymous variation in the main line (6. Bg5 e6 7. f4 b5) Najdorf Sicilian Defence.