As White
Alapin Variation (against the Sicilian)
Against the Sicilian, c3 prepares d4 to get two centre pawns and avoid the heavy theory of the Open Sicilian.
Lines
2...Nc6: canvi a d4
1.e4 c5 2.c3 Nc6 3.d4 cxd4 4.cxd4 d5 5.exd5 Qxd5 6.Nf3 e5 7.Nc3
2...d5: la dama al centre
1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 Nf6 5.Nf3 e6 6.Be2 Nc6 7.O-O
2...Nf6: línia principal
1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.d4 cxd4 5.Nf3 Nc6 6.cxd4 d6 7.Bc4 Nb6 8.Bb5
2...e6: estructura francesa
1.e4 c5 2.c3 e6 3.d4 d5 4.e5 Nc6 5.Nf3 Qb6 6.a3