The transfer of the peerless Frankel from the racing stable to the stallion barn will have set the hearts of those charged with planning future trysts for their mares both alight and aflutter. Those outside the bloodstock business might wonder what any fuss is about – he's a champion horse, so his offspring will be the same, right? – but it is not quite as simple as that. The Aga Khan, arguably the world's most successful breeder, describes the pursuit of excellence as a game of chess with nature.
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