Réti Opening: Dutch Variation

1.Nf3 f5 2.g3 Nf6 3.Bg2 g6 4.O-O Bg7 5.d4 O-O 6.c4 d6 7.Nc3 c6 8.d5 e5 9.dxe6 Bxe6 10.b3 Na6