Sicilian Defence however, it can be dangerous for Black if he is unprepared, as there are many pitfalls for the unwary. Other reasonable moves include: The "Encyclopaedia of Chess Openings" classifies the Sicilian Defence under the codes B20 through B99, giving it more codes than any other opening. In general these guidelines apply: Sicilian Defence The Sicilian Defence is a chess opening that begins with the following moves: The Sicilian is the most popular and best-scoring response to White's first move 1.e4. 1.d4 is a statistically more successful opening for White due to the high success rate of the Sicilian defence against
Ruy Lopez C64), 3...Bc5, is possibly the oldest defence to the Ruy Lopez, and has been played occasionally by former world champion Boris Spassky and Boris Gulko. White's most common reply is 4.c3, when Black may choose to play 4...f5, the Cordel Gambit, leading to sharp play, after which 5.d4 is considered the strongest reply. More solid for Black is instead, 4...Nf6, when 5.0-0 0-0 6.d4 Bb6 leads to the Benelux Variation. White's principal alternative to 4.c3 is 4.0-0, when Black can transpose to the Classical Berlin with 4...Nf6 or play 4...Nd4 which isn't so bad for Black. An alternative for White