So you have to feel sorry for South African President Jacob Zuma. At Buckingham Palace on Wednesday to meet the Queen at the start of his state visit to Britain, he beamed with pride as he handed over a specially-crafted chess […]. “The perfect gift,’ he must have thought. […] She can’t have seen anything like this before.’ But she had. Barely 20 minutes later, on a tour of the Palace’s Picture Gallery, Her Majesty and President Zuma stopped to admire a present given […] in 1996. Cue embarrassing silence. It was an almost identical chess set