I came across this game recently and thought it worth publishing. It features a young Christer Hartman (who went on to become an International Master) beating a well known Grandmaster with a queen sacrifice.
The opening did not go well for Hartman, who lost a pawn to 10.Bxh7+. But the opposite colour bishops gave him some attacking chances on the kingside, and he cleverly set up the ingenious 21…Qxg2+.
Benko obviously missed this shot, as had he chosen 21.Nfd5 he would still have been well on top: