King's Indian Attack: Sicilian Variation

What Is The Sicilian Variation?

The point of 2...c5 is speed. By taking the centre with pawns on d5 and c5 you deny White any hook to attack, so he sets up behind d3, Bg2, O-O and Nbd2 and plays e4, aiming for e5. That advance shuts the centre and splits the board: White's pawn chain points at your king, yours points at his queenside.

Whoever gets their pawn storm going first wins, and with the extra space on the queenside you get there first. Push ...b5 and ...a5 without delay, and hit the e5 chain with ...f6 while his knight is touring to f1 and h2. The mistake is drifting: quiet developing moves hand White the tempi he needs for Qe2, Bf4 and h4.