09.22.2011 - By Cambridge University
Solution to my last video: http://www.youtube.com/watch?v=lAmhA_SmzsI
This puzzle was given to me by Rob Eastaway http://www.robeastaway.com/
Books by Rob Eastaway (I do recommend them!)
Amazon UK: http://amzn.to/pSsLYO
Amazon USA: http://amzn.to/qWAQvI