Ok, a simpleton's question on Mastermind...has there ever been an instance of a competitor being told that his/her answer was wrong only for it to be discovered later that it was the setter who was in fact wrong....AND...did such a situation ever change the outcome of the competition? I dunno but I bet someone here does...or would we never be told anyway?

Brian P. modestly claims a 12 in the Child Ballad round - I did about the same on 'The History of British Motorcycles'. I was recumbant on the settee quaffing a glass of wine whilst the competitor was on the edge of the black chair in the glare of spotlights and with Humphries as his inquisitor...mine was a rather different situation to the real thing. The only pressure I was under was Mrs.D encouraging me with words something akin to "well you should get all these right, there's enough motorcycle magazines in the lavatory for reference."