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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 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.
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.
Chinese Variation of the Sicilian Defence, Dragon Variation – 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 0-0 8.Qd2 Nc6 9.Bc4 Bd7 10.0-0-0 Rb8; Clarendon Court Variation of the Benoni Defence – 1.d4 c5 2.d5 f5; Cocquio Countergambit of the QGD - 1.d4 d5 2.c4 Nf6 3.cxd5 c6; Cologne Gambit of the Ware Opening – 1.a4 b6 2 ...
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.
The Sicilian Defence. 2. d4 cxd4 3. c3 dxc3. White's 3.c3 introduces the Smith–Morra Gambit. Black accepts the gambit pawn. 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7 7. 0-0 Nf6 8. Qe2. White prepares e4–e5. This move is playable if White is careful on the next move. After 8.Re1 Bc5 Black has a good game as White's f2-square is sensitive.
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 ...
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.