Grünfeld Defense: Petrosian System

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bg5 Ne4 6.Bf4 Nxc3 7.bxc3 c5 8.e3 O-O 9.cxd5 cxd4 10.cxd4 Qxd5 11.Be2