Today is Leprechaun Day and it made me remember an old trick that I used to sell a long time ago. It was three pieces of card board with pictures of Leprechauns on it and you switched the two pieces of cardboard and one disappeared. The puzzle looks like:
You can try to print this out and cut it out along the lines. Set it on the table and count the number of Leprechauns then switch the two top pieces and count them again. Did you get the same number?
Is this a magic trick? Well not really, it’s a puzzle however puzzle principles are frequently used in magic tricks.