King's Indian Defense: Fianchetto Variation, Panno Variation, Donner Line

The King's Indian Defense: Fianchetto Variation, Panno Variation, Donner Line is a chess opening classified under ECO code E63 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 13 moves: 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 a6 8. d5 Na5 9. Nd2 c5 10. Qc2 Rb8 11. b3 b5 12. Bb2 bxc4 13. bxc4 Bh6. The resulting position leaves white to move.