Opposite side attack in Sicily

I played this game 18 years ago when I was 16 years young at the Lake Balaton in Hungary in the first round. My opponent played c5, the sicilian defense against my first e4 move. Later in the tourney I was able to beat my first GM opponent who was an Olimpic Champion when Hungary won the  gold medal in the Chess Olimpiad in 1978.

When you replay the game, please look the annotations under the board and look also the variations and side lines!