Flair and Prowess

I haven't featured a Karpov game in quite a while, so here goes...

On his eleventh move, his opponent (Velimirovic) either decides to sacrifice his queen or commits an oversight. Still, there is work to be done for the full point, and Karpov is at his best, invading Velimirovic's kingside with some well-timed sacrifices. The endgame is also particularly instructive. Enjoy!