Game Analysis : # 2

     Recently, I played a game as Black in the grunfeld defence against a higher rated player. At first, I thought I had played a good game but when I later analyzed it I got a unwelcime shock. It featured no less than 3 BIG mistakes by me, each of which got unpunished by my opponent. Here is the game :-

OPPONENT(1575) VS. ME(1529)

The Opening

Out of the opening, I achieve a comfortable position. Whites centre is under pressure my rook is well placed on the c-file. Next the middlegame where I almost throw the game away.
(The middlegame and the endgame will be posted shortly).