Sicilian dragon.

any tactical sequence from the game??. i could not find any forcing lines from move 26. if you find it please share. also please tell me where i made mistakes.thanx

sorry i was playing black..

Skofnung, he was black, not white. Sorry, but the paragraph you just wrote was written for the wrong guy.

Oh wow lol well that was awkward haha. Sorry, take from it what you can. 

I shall try and reverse my answer, and grab a coffee while I'm at it. 

26.g4 Rxb2 27.Rxb2 Bxc3 winning material. how i calculated but material was equal. i gained a pawn only which i sacrificed earlier.

12...a5 allowing 13.a4 slowing down your play considerably (pawn breaks become unavailable), 16...Nc6 dropping pawn without sufficient compensation (hard to attack with only two pieces out), and 26...c5 missing the much better 26...Rb2 winning back the pawn and bringing the draw much closer.

8...Nc6 8.Bc4 Bd7

After you won whites bishop on e3, he has no attack any more (as Skofnung already pointed out). So the slow plan a6,b5,bb7 looks good. Then you play in center (e6/d5) and/or on queenside. You have a long lasting edge because of your bishops.