Castle and challenge White’s center: King's Indian Defense line

Repeat the setup. Castle, challenge the center with your c-pawn and prepare another central exchange.

1. d4
2. Nf6
3. c4
4. g6
5. Nc3
6. Bg7
7. e4
8. d6
9. f3
10. O-O
11. Be3
12. c5
13. d5
14. e6