Chess Opening Theory/1. d4/1...Nf6/2. c4/2...g6/3. Nc3/3...Bg7/4. e4/4...d6/5. Nf3/5...O-O/6. Be2
The main line of the King's Indian Defense. The main line continues 6...e5, attacking the center. White usually castles kingside, and the main line continues 6...Nc6 7. d5 Ne7. White has a space advantage in the center and will try to attack on the queenside and prepare a pawn break, c5. Black will attack on the kingside, by advancing his pawns to f4 and g5, preparing the g4 pawn break.