King's Indian Defense: Fianchetto Variation, Double Fianchetto Attack

The King's Indian Defense: Fianchetto Variation, Double Fianchetto Attack is a chess opening classified under ECO code E64 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 8 moves: 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 d6 5. Bg2 O-O 6. O-O Nbd7 7. Nc3 e5 8. b3. The resulting position leaves black to move.