The Sicilian with 2...Nc6 arises after 1.e4 c5 2.Nf3 Nc6. ECO code: B30.

Black develops the knight to its most natural square, preparing for the Open Sicilian after 3.d4 cxd4 4.Nxd4. This move order leads to the Sveshnikov, Accelerated Dragon, Taimanov (via 2...e6 Nc6), or Classical Sicilian depending on subsequent play. It is one of the most popular and theoretically important Sicilian move orders.