Enigma 1516: A colourful turn
18 September 2012
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From New Scientist #2678, 18th October 2008
I have a little trick with eight cards. Their backs are all white but the fronts are one each of apricot, blue, chocolate, green, orange, primrose, red and terracotta. I place them in a pile in a certain order, white sides up. Then I spell out one of the colours, moving one card from the top of the pile to the bottom as I say each letter. As I reach the last letter of the spelling I turn over that card and (lo and behold) it is that colour. I then place that card at the bottom of the pile and spell out another colour. In this way I work through all the colours, finishing with the apricot. In the course of the trick the chocolate card is turned over later than the terracotta one.
List (by their initials) the order in which I spell out the colours.