Nice Win with the Black Pieces

Here is a nice win of mine. I have the black pieces, and I chose to play the King's Indian Defense in response to White's opening move of pawn to d4.  

 Just so you know, in the King's Indian Defense (1. d4, Nf6 2. c4, g6 3. Nc3, Bg7, 4. e4, d6), Black cedes center control of the board to white, at least for the time being, then seeks to undermine white's position in various ways. White, for his part, tries to play on the queenside. However, if White is not careful and/or doesn't generate sharp enough queenside play, Black, if he's skilled enough, will amass his pieces on the kingside, then launch a attack.  

 In the game below, I was able to do just that—amass my pieces on the kingside and ultimately launch an pernicious attack. 

My opponent was rated 2000, which is 200 Elo points below a master. The "Elo" system is the system that's used to calculate  a chess player's strength. Enjoy! *