The Sicilian Defence is a chess opening that begins with the following moves:
1. e4 c5
1...c5 is the most popular response among masters to White's first move 1.e4. Like 1..e5, the move controls the d4 square in the center, but breaks symmetry immediately, often leading to dynamic and sharp positions. Approximately 25% of games between masters begin with the Sicilian, and of over 800,000 database games beginning 1.e4 c5, White scores only 52% against the Sicilian, compared to 55% among all games. However, it is perceived as somewhat risky, with a relatively low rate of draws.
The most common continuation is for White to develop the king's knight with 2.Nf3, and Black usually replies 2...Nc6, 2...d6, or 2...e6. The line most often continues with 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3, leading to the extensively analyzed Open Sicilian, whose variations include the Najdorf, Dragon, and scheveningen, and many others. White usually plans a kingside attack, often featuring an early f4 or f3 and queenside castling, while Black counterattacks on the queenside. White can also play 2.Nc3, usually intending d3 instead of d4, known as the Closed Sicilian, or 2.c3, aiming to support a later d4, known as the Alapin Variation, or 2.d4, offering the Smith-Morra Gambit (2.d4 cxd4 3.c3).
Convert all the letters in the opening into numbers A=1, B=2... Y=25, Z=26 etc..
SICILIANDEFENCE = ABCDEFGHIJKLMNO
The cache can be found at :-
N55 (L-O)J. FL(B-D)
W001 C(K-I). (G+N)(A-H)(E-I)