Homework of the day
Black to play The following position is from Victor Korchnoi-Anatoly Karpov,1981 World Championship matches and its Black to move.White had recently played 42.Qf1 which saves mate of g2 and threatens some cunning tactics.Black who squeezed a winning position from a quiet positons (for which Karpov is world famous for!) is now winning and should be careful not to ruin his winning position.Can you find the winning plan/moves for Karpov?