Sicilian Defense: Old Sicilian Variation - Chess Openings

Common Lines in the Sicilian Defense Chess Opening

Sicilian Defense: Playing Against it - Complete Guide - TheChessWorld

Sicilian Defense: Kalashnikov Variation with GM Misa Pap

How to Beat the Sicilian Defense - EnthuZiastic

Sicilian Defense: Moscow Variation

The Modernized Anti-Sicilians – Volume 1 – Rossolimo Variation - Thinkers Publishing

Why would White play 2.a3 as their 2nd move in the Sicilian Defense? It's not an accepted opening and I see no benefits. How would you go about strategizing a reply, as

Encyclopaedia: Modern Chess Opening - Sicilian Defence by Alexander Kalinin (editor) - First - 1996 - from The Book Collector ABAA, ILAB, TBA (SKU: BSC0444)

▷ Master the Accelerated Dragon Sicilian!

The Sicilian with . . . Qb6 / Dynamic surprise weapons, AND A SECOND BOOK, play 1e4 e5! / a complete repertoire for Black in the Open Games, AND A THIRD BOOK