Lesson
White to move. Main line: 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 d6
The point of 2.c3 is simple: White wants d4 with two central pawns side by side. Black uses ...Nf6 to attack e4 before that construction is complete, gaining a target and forcing White to reveal the intended e5 advance.
After the c-pawns exchange on d4, White obtains the broad center but has spent a tempo on c3. Black develops the queenside knight and plays ...d6 to undermine e5, attacking the front of White’s pawn chain before it can become permanent.
The Alapin reduces some of the Sicilian’s forcing theory, but it is not quiet. White must defend the center through development, while Black must challenge it before the space advantage settles. Watch the d4 and e5 pawns as a connected unit.