How many times did Korchnoi qualify for World Chess Championship matches with Karpov?
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Answer
Viktor Korchnoi qualified for World Chess Championship matches with Anatoly Karpov two times. Korchnoi lost to Karpov in the 1978 World Chess Championship match and in the 1981 World Chess Championship match.
Mastermind of Chess: Unveiling the Legacy of Viktor Korchnoi