Hello, Chess.com

I've just played a highly tactical game, and I was overwhelmed by the opponent. He is really respected in my chess club and I look up to him, so I was kind of excited that I got to play with him in the club tournament. This is the game, and I would like to know what my blunders/mistakes were, and what should I have done instead (aside, of course, of the loss of material).

Needless to say, his rating is amazingly higher than mine.

7. .. a5 Black wants a knight on c5 that can't be run off.  To play b4, white must first play b3, a3, and then b4.

9. Ne1 followed by f3 and Be3 is another idea.

After 12. .. f5 White would like to NOT capture on f5 but with the earlier loss of time, that's not an option.  Black already has pull.

14. Nh4?  14. Rf1 might be a little better, but it's still going to be a hard game.

7.d5?!  Much better is to maintain the tension in the center by playing 7.0-0.

If Black plays 7...exd4 then Nxd4 and the pawn structure gives you the Maroczy Bind.  Very powerful bind on Black's position which very difficult for him to undo the bind without compromising his position.  Look it up  

I recommend the Saemisch variation against the KID.easy to play and often transposes into Benoni like structures and is easier to play for white.with the normal o-o Nf3 variations there's just too much crap to memorize.

@KanetsuStar

If you really want to frustrate a KID player learn the Fianchetto Variation. 

1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 d6 6.0-0

 It is a solid line where it is difficult for Black to obtain active play.  In fact the normal plan for Black of attacking on the Kingside is no longer viable, at least in the early stages of the game. This is very frustrating to a true KID player and they will play themselves into an inferior position by forcing the attack on the kingside.  First because the bishop on g2 affords extra protection to the White king and second because, unlike in the other lines, White has no intention of blocking the center.  Attacking on the wing is risky business when the center is fluid.  White's basic plan in the Fianchetto variation is to stifle Black's active play and gradually use his space advantage.  If he chooses the Panno Variation 6...Nc6, which is very popular, that is good for you because theoretically in this line Black is struggling to prove equality based on GM and IM games thru 2012.

Now it might be a good idea to find out if he knows the Grunfeld, because he can transpose to it by playing d7-d5 instead of d7-d6.  If he does know it and is aware of transposing to it when you play the Fianchetto variation then you will have to learn the Grunfeld Opening.  

 Good luck giving your respected opponent a good game.