Preparing a consolidating f2-f3, as well as Rab1 with a fight for the b-file.
8.f3 h5 9.g5 f6 10.Kf1! fxg5 11.hxg5 Re6 12.Rdb1! Rxb1+ 13.Rxb1 Qf7 14.Qd5
With focus on the enemy kingside. Now any capture on f3 will clear the g-file for the attack.
This just accelerates White's plan.
1...cxb4 2.axb4 Nd7! is a better try, speeding up his development.
1...cxb4 2.axb4 Nd7! is a better try, speeding up his development.