Overview: Tonight Wales presents its group of aspirant masterminds, and for the occasion Cardiff University is the location. The contenders are: ANGELA ALVES, housewife - Life of Henry VI JOHN LLOYD, barrister - History of Singapore 1819-1969 STUART LAIRD, consultant anaesthetist - World War II in Europe THOMAS DAWKES, librarian - Life and Works of J. R. R. Tolkien