Grünfeld Defense: Petrosian System

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bg5 Ne4 6.cxd5 Nxg5 7.Nxg5 e6 8.Qd2 exd5 9.Qe3+ Kf8 10.Qf4 Bf6 11.h4 h6