King's Indian Defense: Gligorić System

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.Be3 exd4 8.Nxd4 Re8 9.f3 c6 10.Bf2 d5 11.exd5 cxd5 12.O-O Nc6 13.c5