Chess Opening Theory/1. e4/1...c5/2. Nf3/2...Nc6/3. d4

= Open Sicilian with 2...Nc6 = Moves: 1. e4 c5 2. Nf3 Nc6 3.d4

The Open Sicilian is a very popular opening. There is a great deal of theory on the opening and it is also typically very tactical. For these two reasons some people who do not play the Sicilian will avoid playing the Open Sicilian to encourage slower maneuvering instead of sharp tactics.

Theory table
1.e4 c5 2.Nf3 Nc6 3.d4