King's Indian Defense: Fianchetto Variation, Simagin Variation

The King's Indian Defense: Fianchetto Variation, Simagin Variation is a chess opening classified under ECO code E62 in the Indian Defences family, where Black responds to 1.d4 with 1...Nf6, including the Nimzo-Indian, Queen's Indian, and King's Indian. It is reached after 7 moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. g3 O-O 6. Bg2 Nc6 7. O-O Bg4. The resulting position leaves white to move.