The changing of the guard in the world of chess was achieved not by smash-and-grab play, but by herculean displays of patience

Chess may not seem suited to radio, but in the Sixties the BBC broadcast special programmes featuring the world’s greatest ever players

Borislav Ivanov’s gadget-enhanced attempt to cheat his way to sporting success could have been lifted from a James Bond film

Leonid Stein was a virtuoso player whose unexplained death at 38 robbed the world of his otherworldly attacking brilliance