As everyone knows I like riddles. At Macquarie I had a weekly blog post on riddles. Unfortunately it seems that this blog is down so: no link for you!
That would be a very unsatisfactory end to this blog post. Fortunately I was looking at the IBM website a short while back. IBM has an amazing group of researchers doing very basic research on quantum information. These guys, among other things, discovered quantum teleportation.
What I found on the IBM website was a fantastic page full of nice puzzles. http://domino.research.ibm.com/Comm/wwwr_ponder.nsf/pages/index.html