Where are my weaknesses?

here is a recent game i just played. Please help me analyse (i have annotated it) and help me find my weaknesses.

i always play live chess, minimum time limit is 10 minutes. while analysis of the game is good, i have the chess.com skynet working on analysing it, i would like more general comments on how i played, thoughts on my strategy. (KIA is my go-to strategy as white, so commenting on the KIA in general would also help me)

Your opponent played the Petroff Defense. Just a thought, when I play KIA myself, I start with Nf3, g3, Bg2, 0-0. My e5 is normally delayed.

I'm not to comment on your game though, I struggle to analyse my own game. But to me it looks like your opponent makes too many mistakes too.

His 7 ... Bxf3 is a mistake I feel, since his pawn chain is in dark squares, he should have kept his bishop.

On your part, I only see inaccuracise in:

8. Bxf3 which should be 8. Nxf3 which recaptures and frees your dark bishop at the same time. Plus you won't need 9. Bg2. But well you saw that one too.

14. h3 which should be 14. Bxb6.

Maybe you should include one of your losses in KIA to better analyze your weaknesses. And wait for higher rated players to comment too :p

Here is a recent article on this website on KIA which I find useful. You can always search for more references though.

http://www.chess.com/article/view/hocus-pocus-part-two

You nicely capitalized on your opponents mistakes, to make it short.

I agree with furtivamente

You missed the hanging rook, but he almost equals you with making a bad trade. Come on, a dark-squared bishop(his pawns were on dark squares) to a well positioned knight?

Don't let your opponents to act freely in the queenside. I noticed you had no pieces on that side developed, except the knight sitting passively on d2. Nc3 is always the best development, except some rare cases.

All in all, for your level quite a good game.

On the side note, I think by starting 1. Nc3 you will deter your opponent from playing e5 thus preventing them from transposing the game to any other system so you can exclusively play with KIA.

 Nf3 not Nc3

on 2 Nf3 Nf6 i missed out on 3. Nxe5 Nx34 4. Qe2 trap, if he moves his knight he's in a lot of trouble (I can capture his rook with 5. Ng6+ (Reveals a check on the king from the queen). then Nxh8!

I will definitely play a few games where i open 1. Nf3 to deter e5, if it will help me KIA exclusively. While i don't want to exclusively play one opening, i'm only just really starting, and for now, i just want to practice with a system rather than delving into 400 moves of najdorf theory or whatever. (i was being hyperbolic there :D) 

i will definitely put a new focus in my games on checking every check and capture.

Why is 13. Ra8+ a brutal check? is it because it forces him off the back rank and pins his bishop to the 8th rank, else i capture his rook? The computer was big on me playing that move as well. I held back because i wanted to skewer that rook. 

a stronger opponent might not have let me skewer the rook however... so i can kind of understand why its so brutal, and it does force the king out into the open. 

and thank to that link to the KIA article furtivamente, i'm gonna read it now.

Im also seeing the strategy in 13.Ra8+ while i was typing, its also almost impossible to kick off that square.

 I think that in 1.e4 e5 2. Nf3 Nf6 3.Nxe5 Nxe4 4.Qe2 Nf6(or another knight move) 5.Ng6+ is a good move but, there is even better 5. Nc6+ is the best move (wins a queen for a knight).

I know that but most beginners play it.

 what would you say on 3.Nxe5 Qe7 my opponents (around 1550) play that and i dont know what to answer I answer 4.Nf3 Qxe4+ 5.Qe2 If you're sort of a high rated player, I need your help

5. Be2 instead of 5. Qe2. After the queensexchange there's a sterile equality - in this symmetrical position it will be very difficult to make anything of white's microscopic development advantage especially without the queens. On the other hand after 5. Be2 you are ready to castle and you will win at least one more tempo on black's queen that cannot stay on e4 for long.

Another idea is 4. d4.

To award 3... Nxe4 two question marks is very missleading imo and to say it isn't played by anyone above beginner level simply isn't true. I would only award ?! if any. 3... Nxe4 is in theory inferior to 3... d6 but in practice it's a very tough nut to crack. It's true that black looses material but only one pawn and he has some compensation.

i've managed to get a few Nxe5 Nxe4 Qe2 games under my belt recently, and at my level, its a brutal advantage if they misstep.