Checkmate by Castling in Sicilian Defense

Checkmate by Castling in Sicilian Defense
Sicilian Defense Opening Theory:
The Sicilian Defense is a chess opening that begins with the following moves:
1. e4 c5
** The Sicilian Defense is the most popular response to White's 1.e4.
** The Sicilian Defense Employed by masters and beginners alike, the Sicilian Defense is a reputable and positionally sound opening. ** The Sicilian is a combative opening that tends to lead to dynamic and sharp positions.
** The Sicilian is the most popular and best-scoring response to White's first move 1.e4.
** New In Chess stated in its 2000 Yearbook that, of the games in its database, White scored 56.1% in 296,200 games beginning 1.d4, but 54.1% in 349,855 games beginning 1.e4, mainly because the Sicilian held White to a 52.3% score in 145,996 games.
** 17% of all games between grandmasters, and 25% of the games in the Chess Informant database, begin with the Sicilian.
** Grandmaster John Nunn attributes the Sicilian Defense's popularity to its "combative nature": "in many lines Black is playing not just for equality, but for the advantage. The drawback is that White often obtains an early initiative, so Black has to take care not to fall victim to a quick attack."
** Grandmaster Jonathan Rowson considered why the Sicilian is the most successful response to 1.e4, even though 1...c5 develops no pieces and the pawn on c5 controls only d4 and b4.
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