The fascinating tale of the solving of the famous enigma in the shape of space - part history and part maths. In the world of maths, the Poincare Conjecture was the holy grail. Mathematicians laboured over decades to crack it, with the lure of academic recognition and a one million dollar prize at stake. Finally it has been solved - by a reclusive Russian, who, when he won the Fields Medal, refused to attend the ceremony in favour of staying at home and watching television.