Fischer, Karpov and Kortschnoi

If Bobby Fischer had not retired after becoming World Champion in 1972 we would have seen a decade dominated by Fischer, Anatoly Karpov and Viktor Kortschnoi. What would have happened, if there had been a match Fischer - Karpov or Fischer - Kortschnoi? And why did Fischer not play against Karpov in 1975? And how would Fischer's decision have turned out if the challenger had not been Karpov, but Kortschnoi? Some thoughts by Stephan Oliver Platz.

The dirtiest chess match in history': Stean on Karpov-Korchnoi, 1978

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124-Move Chess Game at a World Chess Championship 1978 - Of Korchnoi-Karpov Missed Checkmate and Stalemate ~ Chess Magazine Black and White

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World Chess Championship 1975 - Wikipedia