King's Indian Defense: Semi-Classical Variation, Queenside Storm Line

The King's Indian Defense: Semi-Classical Variation, Queenside Storm Line is a chess opening classified under ECO code E61 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. Nc3 Bg7 4. Nf3 O-O 5. e3 d6 6. Be2 Nbd7 7. O-O e5 8. b4. The resulting position leaves black to move.