Complex sentence: He can play chess and spends seven hours trying, unsuccessfully, to teach Richie, he knows a fair amount about Napoleon and Wellington who Richie claims invented the Chelsea Boot and appears well versed in the works of Vivaldi whom Richie believes to be a football player.
Split into simpler sentences: He can play chess and spends seven hours trying, unsuccessfully, to teach Richie, he knows a fair amount about Napoleon and Wellington who Richie claims invented the Chelsea Boot. Eddie also appears well versed in the works of Vivaldi whom Richie believes to be a football player.