The Sicilian Defense is an opening that commences with the moves 1.e4 c5. The Sicilian Defense is the most popular and best-scoring response to White's first move 1.e4. For example, 1.d4, is a statistically more successful opening for White because of the high success rate of the Sicilian Defense against 1.e4. The Sicilian is Black's most dynamic, asymmetrical reply to 1.P-K4. It produces the psychological and tension factors which denote the best in modern play and gives notice of a fierce fight on the very first move.' The Modernized Grivas Sicilian is an unique variation within the Sicilian developed by Grandmaster Grivas, the reason why it has his name.