Grünfeld Defense: Russian, Prins Variation

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Na6 8.Be2 c5 9.d5 e6 10.O-O exd5 11.exd5 Bf5